EP1584745B1 - Calibration device - Google Patents

Calibration device Download PDF

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Publication number
EP1584745B1
EP1584745B1 EP05004643A EP05004643A EP1584745B1 EP 1584745 B1 EP1584745 B1 EP 1584745B1 EP 05004643 A EP05004643 A EP 05004643A EP 05004643 A EP05004643 A EP 05004643A EP 1584745 B1 EP1584745 B1 EP 1584745B1
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EP
European Patent Office
Prior art keywords
blade
sensor
calibration device
holder
pressure sensor
Prior art date
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Revoked
Application number
EP05004643A
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German (de)
French (fr)
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EP1584745A1 (en
Inventor
Peter Mau
Markus Müller
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Joh Clouth GmbH and Co KG
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Joh Clouth GmbH and Co KG
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Application filed by Joh Clouth GmbH and Co KG filed Critical Joh Clouth GmbH and Co KG
Priority to PL05004643T priority Critical patent/PL1584745T3/en
Publication of EP1584745A1 publication Critical patent/EP1584745A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1036—Clamping and adjusting devices

Definitions

  • the invention relates to a calibration device for the contact pressure of a blade on the circumference of a roll or a cylinder, in particular a paper machine, a printing press, a calender or the like, adjacent blade of a scraper.
  • the invention also relates to a method for adjusting a contact pressure of a blade on the circumference of a roll or a cylinder, in particular a paper machine, a printing press, a calender or the like.
  • Such a device and such a method are known for example from WO 01 20077 A1.
  • Scrapers have the task to clean the surface of a roller, or a cylinder.
  • such a scraper device causes the paper web guided over the respective roll of the paper machine to not wind up on the roll in the event of a web break, but instead leaves the roll at the intended location, for example to get into a collecting chute.
  • This task must ensure the scraper with 100 percent certainty, otherwise it can lead to significant disruptions in paper production, and possibly even damage to the paper machine.
  • the blade in the scraper must always rest evenly over the entire length of the scraper on the lateral surface of the respective roller-the plane of the blade extends at a shallow angle to the tangent of the contact surface line on the roller.
  • the invention is therefore based on the problem of providing the person skilled in the art with a means and / or a method so that he can set the contact pressure of the blades in a reproducible manner.
  • a calibration device of the type mentioned above in that it is provided with a holding blade, an attached sensor holder and a pressure sensor, wherein the holding blade, the sensor holder and the pressure sensor are positioned so that the position of the pressure sensor on the circumference Roller or cylinder corresponds to the location of the blade.
  • a calibration device is universally applicable, i.
  • the calibration device can be used for blade holders of various designs.
  • a blade clamped in a blade holder is simulated and the pressure with which the sensor bears against the circumference of the roller or the cylinder is measured.
  • the pressure sensor is positioned exactly where the scraping edge of the blade comes to rest.
  • the blade holder is then adjusted so that the desired pressure values are achieved.
  • the settings are then saved so that they can be recalled after replacing the calibrator with the actual blade.
  • These stored values can be, for example, positions of adjusting screws, pressures of adjusting cylinders or of be inflatable tubes with which the blade holder is delivered.
  • the holding blade has a clamping end, which is formed as the clamping end of the blade.
  • this clamping end has openings for receiving rivets, so that a secure hold in the blade holder is ensured.
  • the sensor holder is slotted on its side facing the holding blade.
  • this slot which according to the invention has a height corresponding to the thickness of the holding blade, the holding blade is inserted and screwed or riveted to the sensor holder.
  • Other types of attachment such as gluing, is also conceivable.
  • the holding blade In order to be able to measure the pressing force of the blade at several points along its length, the holding blade is designed to accommodate a plurality of sensor holders. Above all, this can be used to determine whether the blade is aligned axially parallel to the axis of the roller or the cylinder, which is the basic prerequisite for the same contact pressure over the entire length and a uniform wear. It can also be attached several holding blades in the blade holder.
  • the pressure sensor is attached to the side facing away from the holding blade of the sensor holder.
  • the sensor holder is constructed in the manner of a tactile finger and determines, independently of the adjacent sensor holders its associated contact pressure.
  • a preferred embodiment provides that the Sensor holder from the plane of the holding blade out and bent away from the roller or bent. This creates space for receiving the pressure sensor, which is located exactly where the scraping edge of the blade contacts the circumference of the roller.
  • the cranked or bent portion extends substantially or at least partially tangentially to the roller or to the cylinder. Since the roller or the cylinder has a relatively large diameter, the bent or bent portion of the sensor holder extends substantially parallel to the surface of the roller and can easily accommodate the sensor. Minor position inaccuracies of the sensor on the sensor holder do not affect the measurement accuracy.
  • an elastic pad is disposed between the pressure sensor and the roller surface. Dirt on the roller surface, which inevitably lead to pressure surges in the pressure sensor, passes over the sensor unscathed, since it is protected by the elastic pad.
  • the cushion according to the invention consists of plastic, in particular silicone. It has been shown that this material is particularly durable and the pressure forces distributed excellent on the pressure sensor.
  • the sensor holder is made Steel or a hard plastic.
  • the holding blade may also be made of steel, but a made of carbon fiber reinforced plastic holding blade is preferred because it is easier to handle. Thus, a several meters long holding blade for transport and / or storage can be rolled up easily.
  • FIG. 1 shows a generally designated 10 blade holder, which is fastened with its rail 12, for example, on the (not shown) frame of a roller. Of this roller, only the roller surface 14 is shown.
  • the rail 12 is connected to a pivot bearing 16 provided on which a support 18 is pivotally mounted.
  • This support 18 has two shoulders 20 and 22, under which inflatable tubes 24 and 26 are arranged, which in turn are supported on the rail 12. By setting different pressures in the hoses 24 and 26, the carrier 18 can be pivoted about the pivot bearing 16.
  • One end of the carrier 18 is formed as a receptacle 28 for a blade 30, the scraper edge 32 is seated on the roller surface 14. Since the receptacle 28 is well known, it will not be described in detail. Instead of the blade 30, which is drawn with a dashed line, is located in the receptacle 28 a generally designated 34 calibration device having a holding blade 36, a sensor holder 38 and a pressure sensor 40.
  • the holding blade 36 has a chucking end 42 which is formed as the chucking end of the blade 30. Therefore, the holding blade 36 can be fixed in the receptacle 28 of the blade holder 10 exactly like the blade 30.
  • FIG. 2 shows the sensor holder 38, whose end 44 facing the holding blade has a slot 46 whose height corresponds to the thickness of the holding blade 36.
  • the end 44 is provided with threaded holes 48, in which, as shown in Figure 1, grub screws 50 are screwed, with which the sensor holder 38 is attached to the holding blade 36.
  • the slot 46 is oriented to include an angle ⁇ of 27 ° with the tangent 52. This angle ⁇ would also include a blade 30 with the tangent 52.
  • the sensor holder 38 has a bent portion 54 which is substantially parallel to the tangent 52 or extends to the surface 14 of the roller.
  • On the surface 14 facing side 56 of the pressure sensor 40 is attached to which in turn an elastic pad 58 is attached.
  • the voltage applied to the roll surface 14 elastic pad 58 distributes the pressure acting on the pressure sensor 40 evenly over its surface.
  • the orthogonal 60 passing through the pressure sensor 40 and the pad 58 includes an angle ⁇ of 90 ° to the tangent 52.
  • the holding blade 36 is shown having openings 62, to which, for example, rivets can be attached, via which the holding blade 36 is held captive in the receptacle 28.
  • the contact pressure can be increased, which can be detected by the pressure sensor 40.
  • Different pressures can now be assigned to different pressures in the tubes 24 and 26 so that after the calibration device 34 has been replaced by a scraper blade 30, this contact pressure on the scraper edge 32 can be generated reproducibly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Paper (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Coating Apparatus (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measuring Fluid Pressure (AREA)
  • Stereophonic System (AREA)

Abstract

The assembly includes a mounting strip (36) with a sensor holder (38) for the pressure sensor (40) fastened to it. These components are positioned such that the pressure sensor is located in correspondence with the resting location of the scraper blade (30) against the cylinder : The mounting strip end corresponds in shape with the clamped end of the blade. At the side of the sensor holder facing the mounting strip, it is slotted. Slot height corresponds with the mounting strip, which is constructed to hold several sensor holders. The pressure sensor is fastened on the side of the sensor holder facing away from the mounting strip. The sensor holder is bent out from the plane of the strip, this section running tangentially to the cylinder. The sensor is fastened on the side facing the cylinder. A resilient cushion (58) intervenes between sensor and roller. It is plastic, especially a silicone. The pressure sensor is a tactile pressure sensor, especially a piezoelectric element. The sensor holder is steel or plastic. The mounting strip is steel or carbon-reinforced plastic. The sensor holder can be screwed onto it, at various locations. An independent claim is included for the corresponding method of adjusting the pressure of the scraper on the cylinder circumference.

Description

Die Erfindung betrifft eine Kalibriervorrichtung für den Anpressdruck einer am Umfang einer Walze oder eines Zylinders, insbesondere einer Papiermaschine, einer Druckmaschine, eines Kalanders oder dergleichen, anliegenden Klinge einer Schabvorrichtung. Die Erfindung betrifft auch ein Verfahren zum Einstellen eines Anpressdrucks einer am Umfang einer Walze oder eines Zylinders, insbesondere einer Papiermaschine, einer Druckmaschine, eines Kalanders oder dergleichen anliegenden Klinge. Eine solche Vorrichtung und ein solches Verfahren sind z.B aus der WO 01 20077 A1 bekannt.The invention relates to a calibration device for the contact pressure of a blade on the circumference of a roll or a cylinder, in particular a paper machine, a printing press, a calender or the like, adjacent blade of a scraper. The invention also relates to a method for adjusting a contact pressure of a blade on the circumference of a roll or a cylinder, in particular a paper machine, a printing press, a calender or the like. Such a device and such a method are known for example from WO 01 20077 A1.

Schabvorrichtungen besitzen die Aufgabe, die Oberfläche einer Walze, beziehungsweise eines Zylinders, zu reinigen.Scrapers have the task to clean the surface of a roller, or a cylinder.

Im Falle einer Papiermaschine bewirkt eine derartige Schabvorrichtung, dass die über die betreffende Walze der Papiermaschine geführte Papierbahn im Falle eines Bahnrisses sich nicht auf der Walze aufwickelt, sondern die Walze an der vorhergesehenen Stelle verlässt, um zum Beispiel in einen Auffangschacht zu gelangen. Diese Aufgabe muss die Schabvorrichtung mit hundertprozentiger Sicherheit gewährleisten, da es sonst zu erheblichen Störungen bei der Papierherstellung, und unter Umständen sogar zu einer Beschädigung der Papiermaschine kommen kann. Aus diesem Grunde muss die Klinge in der Schabvorrichtung stets gleichmäßig über die ganze Länge des Schabers an der Mantelfläche der betreffenden Walze anliegen- Die Ebene der Klinge verläuft dabei unter einem flachen Winkel zu der Tangente der Berührungsmantellinie an der Walze.In the case of a paper machine, such a scraper device causes the paper web guided over the respective roll of the paper machine to not wind up on the roll in the event of a web break, but instead leaves the roll at the intended location, for example to get into a collecting chute. This task must ensure the scraper with 100 percent certainty, otherwise it can lead to significant disruptions in paper production, and possibly even damage to the paper machine. For this reason, the blade in the scraper must always rest evenly over the entire length of the scraper on the lateral surface of the respective roller-the plane of the blade extends at a shallow angle to the tangent of the contact surface line on the roller.

Um eine zuverlässige Schabwirkung zu erzielen, muss sichergestellt sein, dass die Klinge mit einem bestimmten Druck auf der Walzenoberfläche anliegt. Jedoch darf dieser Druck nicht zu hoch sein, da sich die Klinge dann zu sehr abnutzt und vorzeitig ausgetauscht werden muss und die Gefahr besteht, dass die Walzenoberfläche beschädigt wird. Auch muss der Anpressdruck über die gesamte Länge der Walze möglichst gleichmäßig sein, da es ansonsten zu ungleichmäßigen Abnutzungen an der Klinge Kommt. Da geeignete Messvorrichtungen nicht vorhanden sind, muss auf die Erfahrung des Einrichters zurückgegriffen werden, was aber dazu führt, dass keine reproduzierbaren Einstellwerte erzielbar sind.In order to achieve a reliable scraping effect, it must be ensured that the blade rests on the roll surface with a certain pressure. However, this pressure must not be too high, as the blade then wears too much and must be replaced prematurely and there is a risk that the roll surface will be damaged. Also, the contact pressure over the entire length of the roller must be as uniform as possible, otherwise it will lead to uneven wear on the blade. Since suitable measuring devices are not available, the experience of the installer must be resorted to, which, however, results in the fact that no reproducible setting values can be achieved.

Aus der DE 600 00 021 T2 ist eine Anordnung zum Einstellen der Belastung eines Papiermaschinenschabers bekannt. Diese Anordnung weist einen Lagerbock und einen schwenkbar am Lagerbock gelagerten Halter für den Schaber auf. Der Halter kann durch Aufblasen von Schläuchen, die zwischen Lagerbock und Halter vorgesehen sind, verschwenkt und der Schaber dadurch an die Walzenoberfläche angepresst werden. Eine Messung des Anpressdruckes ist aber nicht möglich. Es muss ebenfalls auf Erfahrungswerte zurück gegriffen werden.From DE 600 00 021 T2 an arrangement for adjusting the load of a paper machine scraper is known. This arrangement comprises a bearing block and a holder for the scraper mounted pivotably on the bearing block. The holder can be pivoted by inflating tubes, which are provided between bearing block and holder, and the scraper thereby be pressed against the roll surface. A measurement of the contact pressure is not possible. It must also be based on experience.

Der Erfindung liegt daher die Aufgabe zugrunde, dem Fachmann ein Mittel und/oder ein Verfahren zur Hand zu geben, so dass er den Anpressdruck der Klingen reproduzierbar einstellen kann.The invention is therefore based on the problem of providing the person skilled in the art with a means and / or a method so that he can set the contact pressure of the blades in a reproducible manner.

Diese Aufgabe wird mit einer Kalibriervorrichtung der eingangs genannten Art dadurch gelöst, dass diese mit einer Halteklinge, einem daran befestigten Sensorhalter und einem Drucksensor versehen ist, wobei die Halteklinge, der Sensorhalter und der Drucksensor so positionierbar sind, dass die Lage des Drucksensors am Umfang der Walze oder des Zylinders dem Anlageort der Klinge entspricht. Eine derartige Kalibriervorrichtung ist universell verwendbar, d.h. die Kalibriervorrichtung kann für Klingenhalter unterschiedlichster Bauart verwendet werden.This object is achieved with a calibration device of the type mentioned above in that it is provided with a holding blade, an attached sensor holder and a pressure sensor, wherein the holding blade, the sensor holder and the pressure sensor are positioned so that the position of the pressure sensor on the circumference Roller or cylinder corresponds to the location of the blade. Such a calibration device is universally applicable, i. The calibration device can be used for blade holders of various designs.

Mit der erfindungsgemäßen Kalibriervorrichtung wird eine in einen Klingenhalter eingespannte Klinge simuliert und es wird der Druck gemessen, mit welcher der Sensor am Umfang der Walze oder des Zylinders anliegt. Dabei wird der Drucksensor genau dort positioniert, wo die Schabkante der Klinge zu liegen kommt. Der Klingenhalter wird daraufhin so eingestellt, dass die gewünschten Druckwerte erzielt werden. Die Einstellungen werden dann gespeichert, so dass sie nach dem Austausch der Kalibriervorrichtung gegen die tatsächliche Klinge wieder abgerufen werden können. Diese abgespeicherten Werte können zum Beispiel Positionen von Einstellschrauben, Drücke von Stellzylindern oder von aufblasbaren Schläuchen sein, mit welchen der Klingenhalter zugestellt wird.With the calibration device according to the invention, a blade clamped in a blade holder is simulated and the pressure with which the sensor bears against the circumference of the roller or the cylinder is measured. The pressure sensor is positioned exactly where the scraping edge of the blade comes to rest. The blade holder is then adjusted so that the desired pressure values are achieved. The settings are then saved so that they can be recalled after replacing the calibrator with the actual blade. These stored values can be, for example, positions of adjusting screws, pressures of adjusting cylinders or of be inflatable tubes with which the blade holder is delivered.

Bei einer Weiterbildung ist vorgesehen, dass die Halteklinge ein Einspannende aufweist, das so ausgebildet ist, wie das Einspannende der Klinge. Insbesondere besitzt dieses Einspannende Öffnungen zur Aufnahme von Nieten, so dass ein sicherer Halt im Klingenhalter gewährleistet ist.In a further development it is provided that the holding blade has a clamping end, which is formed as the clamping end of the blade. In particular, this clamping end has openings for receiving rivets, so that a secure hold in the blade holder is ensured.

Bei einem Ausführungsbeispiel ist vorgesehen, dass der Sensorhalter an seiner der Halteklinge zugewandten Seite geschlitzt ist. In diesen Schlitz, der erfindungsgemäß eine Höhe aufweist, die der Dicke der Halteklinge entspricht, wird die Halteklinge eingeschoben und mit dem Sensorhalter verschraubt oder vernietet. Andere Befestigungsarten, wie zum Beispiel ein Einkleben, ist ebenfalls denkbar.In one embodiment, it is provided that the sensor holder is slotted on its side facing the holding blade. In this slot, which according to the invention has a height corresponding to the thickness of the holding blade, the holding blade is inserted and screwed or riveted to the sensor holder. Other types of attachment, such as gluing, is also conceivable.

Um die Andruckkraft der Klinge an mehreren Stellen ihrer Länge messen zu können, ist die Halteklinge zur Aufnahme mehrerer Sensorhalter ausgebildet. Vor allem kann hierdurch ermittelt werden, ob die Klinge achsparallel zur Achse der Walze oder des Zylinders ausgerichtet ist, was die Grundvoraussetzung für einen gleichen Anpressdruck über die gesamte Länge und eine gleichmäßige Abnutzung ist. Es können auch mehrere Halteklingen im Klingenhalter befestigt werden.In order to be able to measure the pressing force of the blade at several points along its length, the holding blade is designed to accommodate a plurality of sensor holders. Above all, this can be used to determine whether the blade is aligned axially parallel to the axis of the roller or the cylinder, which is the basic prerequisite for the same contact pressure over the entire length and a uniform wear. It can also be attached several holding blades in the blade holder.

Mit Vorzug ist der Drucksensor an der der Halteklinge abgewandten Seite des Sensorhalters befestigt. Der Sensorhalter ist nach Art eines Tastfingers aufgebaut und ermittelt, unabhängig von den benachbarten Sensorhaltern den ihm zugehörigen Anpressdruck.With preference, the pressure sensor is attached to the side facing away from the holding blade of the sensor holder. The sensor holder is constructed in the manner of a tactile finger and determines, independently of the adjacent sensor holders its associated contact pressure.

Eine bevorzugte Ausführungsform sieht vor, dass der Sensorhalter aus der Ebene der Halteklinge heraus und weg von der Walze abgekröpft oder abgebogen ist. Hierdurch wird Platz geschaffen zur Aufnahme des Drucksensors, der sich genau an der Stelle befindet, wo die Schabkante der Klinge den Umfang der Walze berührt.A preferred embodiment provides that the Sensor holder from the plane of the holding blade out and bent away from the roller or bent. This creates space for receiving the pressure sensor, which is located exactly where the scraping edge of the blade contacts the circumference of the roller.

Dabei verläuft der abgekröpfte oder abgebogene Abschnitt im Wesentlichen oder zumindest teilweise tangential zur Walze oder zum Zylinder. Da die Walze beziehungsweise der Zylinder einen relativ großen Durchmesser aufweist, erstreckt sich der abgekröpfte oder abgebogene Abschnitt des Sensorhalters im Wesentlichen parallel zur Oberfläche der Walze und kann problemlos den Sensor aufnehmen. Geringfügige Positionsungenauigkeiten des Sensors am Sensorhalter wirken sich nicht auf die Messgenauigkeit aus.In this case, the cranked or bent portion extends substantially or at least partially tangentially to the roller or to the cylinder. Since the roller or the cylinder has a relatively large diameter, the bent or bent portion of the sensor holder extends substantially parallel to the surface of the roller and can easily accommodate the sensor. Minor position inaccuracies of the sensor on the sensor holder do not affect the measurement accuracy.

Um den Sensor vor Druckstößen zu schützen, ist zwischen dem Drucksensor und der Walzenoberfläche ein elastisches Kissen angeordnet. Verschmutzungen auf der Walzenoberfläche, die unweigerlich zu Druckstößen im Drucksensor führen, überfährt der Sensor unbeschadet, da er durch das elastische Kissen geschützt ist.To protect the sensor from pressure surges, an elastic pad is disposed between the pressure sensor and the roller surface. Dirt on the roller surface, which inevitably lead to pressure surges in the pressure sensor, passes over the sensor unscathed, since it is protected by the elastic pad.

Dabei besteht das Kissen erfindungsgemäß aus Kunststoff, insbesondere aus Silikon. Es hat sich gezeigt, dass dieses Material besonders langlebig ist und die Druckkräfte ausgezeichnet auf den Drucksensor verteilt.In this case, the cushion according to the invention consists of plastic, in particular silicone. It has been shown that this material is particularly durable and the pressure forces distributed excellent on the pressure sensor.

Sehr gute Messergebnisse wurden mit einem taktilen Drucksensor, nämlich einem Piezoelement als Drucksensor erzielt. Diese Drucksensoren sind äußerst stabil und liefern über einen langen Zeitraum reproduzierbare Werte.Very good measurement results were achieved with a tactile pressure sensor, namely a piezoelectric element as a pressure sensor. These pressure sensors are extremely stable and provide reproducible values over a long period of time.

Bei einem Ausführungsbeispiel besteht der Sensorhalter aus Stahl oder aus einem harten Kunststoff. Dabei kann die Halteklinge ebenfalls aus Stahl bestehen, jedoch wird eine aus mit Kohlefaser verstärktem Kunststoff bestehende Halteklinge bevorzugt, da diese leichter handhabbar ist. So kann eine mehrere Meter lange Halteklinge zum Transport und/oder zur Lagerung einfach aufgerollt werden.In one embodiment, the sensor holder is made Steel or a hard plastic. In this case, the holding blade may also be made of steel, but a made of carbon fiber reinforced plastic holding blade is preferred because it is easier to handle. Thus, a several meters long holding blade for transport and / or storage can be rolled up easily.

Die oben genannte Aufgabe wird aber auch durch ein Verfahren gelöst, welches die Merkmale des Anspruches 16 aufweist.The above object is also achieved by a method having the features of claim 16.

Weitere Vorteile, Merkmale und Einzelheiten ergeben sich aus den Ansprüchen sowie aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein besonders bevorzugtes Ausführungsbeispiel im Einzelnen beschrieben ist.Further advantages, features and details will become apparent from the claims and from the following description in which, with reference to the drawing, a particularly preferred embodiment is described in detail.

In der Zeichnung zeigen:

Figur 1
eine Seitenansicht der erfindungsgemäßen Kalibriervorrichtung;
Figur 2
eine Seitenansicht des Sensorhalters; und
Figur 3
eine Draufsicht auf eine Halteklinge.
In the drawing show:
FIG. 1
a side view of the calibration device according to the invention;
FIG. 2
a side view of the sensor holder; and
FIG. 3
a plan view of a holding blade.

Die Figur 1 zeigt einen insgesamt mit 10 bezeichneten Klingenhalter, der mit seiner Schiene 12 zum Beispiel am (nicht dargestellten) Gestell einer Walze befestigt ist. Von dieser Walze ist lediglich die Walzenoberfläche 14 dargestellt. Die Schiene 12 ist mit einem Schwenklager 16 versehen, an welchem ein Träger 18 schwenkbar befestigt ist. Dieser Träger 18 besitzt zwei Schultern 20 und 22, unter denen aufblasbare Schläuche 24 und 26 angeordnet sind, die sich ihrerseits an der Schiene 12 abstützen. Durch Einstellen unterschiedlicher Drücke in den Schläuchen 24 und 26 kann der Träger 18 um das Schwenklager 16 verschwenkt werden.1 shows a generally designated 10 blade holder, which is fastened with its rail 12, for example, on the (not shown) frame of a roller. Of this roller, only the roller surface 14 is shown. The rail 12 is connected to a pivot bearing 16 provided on which a support 18 is pivotally mounted. This support 18 has two shoulders 20 and 22, under which inflatable tubes 24 and 26 are arranged, which in turn are supported on the rail 12. By setting different pressures in the hoses 24 and 26, the carrier 18 can be pivoted about the pivot bearing 16.

Ein Ende des Trägers 18 ist als Aufnahme 28 für eine Klinge 30 ausgebildet, deren Schaberkante 32 auf der Walzenoberfläche 14 aufsitzt. Da die Aufnahme 28 allgemein bekannt ist, wird sie nicht näher beschrieben. Anstelle der Klinge 30, die mit gestrichelter Linie gezeichnet ist, befindet sich in der Aufnahme 28 eine insgesamt mit 34 bezeichnete Kalibriervorrichtung, die eine Halteklinge 36, einen Sensorhalter 38 und einen Drucksensor 40 aufweist. Die Halteklinge 36 besitzt ein Einspannende 42, welches so ausgebildet ist, wie das Einspannende der Klinge 30. Daher kann die Halteklinge 36 genau gleich wie die Klinge 30 in der Aufnahme 28 des Klingenhalters 10 befestigt werden.One end of the carrier 18 is formed as a receptacle 28 for a blade 30, the scraper edge 32 is seated on the roller surface 14. Since the receptacle 28 is well known, it will not be described in detail. Instead of the blade 30, which is drawn with a dashed line, is located in the receptacle 28 a generally designated 34 calibration device having a holding blade 36, a sensor holder 38 and a pressure sensor 40. The holding blade 36 has a chucking end 42 which is formed as the chucking end of the blade 30. Therefore, the holding blade 36 can be fixed in the receptacle 28 of the blade holder 10 exactly like the blade 30.

Die Figur 2 zeigt den Sensorhalter 38, dessen der Halteklinge 36 zugewandtes Ende 44 einen Schlitz 46 aufweist, dessen Höhe der Dicke der Halteklinge 36 entspricht. Außerdem ist das Ende 44 mit Gewindebohrungen 48 versehen, in welche, wie in Figur 1 dargestellt, Madenschrauben 50 einschraubbar sind, mit denen der Sensorhalter 38 an der Halteklinge 36 befestigt wird. Der Schlitz 46 ist so ausgerichtet, dass er mit der Tangente 52 einen winkel α von 27° einschließt. Diesen Winkel α würde auch eine Klinge 30 mit der Tangente 52 einschließen.FIG. 2 shows the sensor holder 38, whose end 44 facing the holding blade has a slot 46 whose height corresponds to the thickness of the holding blade 36. In addition, the end 44 is provided with threaded holes 48, in which, as shown in Figure 1, grub screws 50 are screwed, with which the sensor holder 38 is attached to the holding blade 36. The slot 46 is oriented to include an angle α of 27 ° with the tangent 52. This angle α would also include a blade 30 with the tangent 52.

Der Sensorhalter 38 weist einen abgekröpften Abschnitt 54 auf, der sich im Wesentlichen parallel zur Tangente 52 beziehungsweise zur Oberfläche 14 der Walze erstreckt. An der der Oberfläche 14 zugewandten Seite 56 ist der Drucksensor 40 angebracht, an welchem seinerseits ein elastisches Kissen 58 befestigt ist. Das an der Walzenoberfläche 14 anliegende elastische Kissen 58 verteilt den auf den Drucksensor 40 einwirkenden Druck gleichmäßig über dessen Fläche. Die durch den Drucksensor 40 und das Kissen 58 gehende Orthogonale 60 schließt einen Winkel β von 90° zur Tangente 52 ein.The sensor holder 38 has a bent portion 54 which is substantially parallel to the tangent 52 or extends to the surface 14 of the roller. On the surface 14 facing side 56 of the pressure sensor 40 is attached to which in turn an elastic pad 58 is attached. The voltage applied to the roll surface 14 elastic pad 58 distributes the pressure acting on the pressure sensor 40 evenly over its surface. The orthogonal 60 passing through the pressure sensor 40 and the pad 58 includes an angle β of 90 ° to the tangent 52.

In Figur 3 ist die Halteklinge 36 dargestellt, die Öffnungen 62 aufweist, an denen zum Beispiel Nieten befestigt werden können, über welche die Halteklinge 36 verliersicher in der Aufnahme 28 gehalten wird.In Figure 3, the holding blade 36 is shown having openings 62, to which, for example, rivets can be attached, via which the holding blade 36 is held captive in the receptacle 28.

Durch Erhöhung des Drucks im rechten Schlauch 26 kann die Anpresskraft vergrößert werden, was mit dem Drucksensor 40 erfassbar ist. Es können nun unterschiedlichen Drücken in den Schläuchen 24 und 26 unterschiedliche Anpressdrücke zugeordnet werden, so dass nach dem Austausch der Kalibriervorrichtung 34 durch eine Schaberklinge 30 dieser Anpressdruck an der Schaberkante 32 reproduzierbar erzeugt werden kann.By increasing the pressure in the right hose 26, the contact pressure can be increased, which can be detected by the pressure sensor 40. Different pressures can now be assigned to different pressures in the tubes 24 and 26 so that after the calibration device 34 has been replaced by a scraper blade 30, this contact pressure on the scraper edge 32 can be generated reproducibly.

Claims (18)

  1. A device (34) for calibrating a contact pressure of a blade (30) in a scraping device, the blade abutting a periphery of a roller or cylinder particularly in a paper machine, a printing machine, a calender or another similar machine, characterized in that the calibration device comprising a holding blade (36), a sensor holder (38) mounted thereto, and a pressure sensor (40), wherein said holding blade (36), said sensor holder (38), and said pressure sensor (40) can be positioned such that the position of said pressure sensor (40) on the periphery of the roller or cylinder corresponds to a location of abutment of the blade (30).
  2. The calibration device of claim 1, characterized in that said holding blade (36) has a clamping end (42) which is designed like a clamping end of the blade (30).
  3. The calibration device of one of the preceding claims, characterized in that said sensor holder (38) has a slot on its side facing said holding blade (36).
  4. The calibration device of claim 3, characterized in that said the height of slot (46) corresponds to a thickness of said holding blade (36).
  5. The calibration device of one of the preceding claims, characterized in that said holding blade (36) is designed to receive several sensor holders (38).
  6. The calibration device of one of the preceding claims, characterized in that said pressure sensor (40) is mounted to a side of said sensor holder (38) facing away from said holding blade (36)arm.
  7. The calibration device of one of the preceding claims, characterized in that said sensor holder (38) is offset or bent away from a plane of said holding blade (36).
  8. The calibration device of claim 7, characterized in that at least sections of the offset or bent section (54) extends substantially tangentially to the roller or cylinder.
  9. The calibration device of one of the preceding claims, characterized in that said pressure sensor (40) is mounted to a side of said sensor holder (38) facing the roller or cylinder.
  10. The calibration device of one of the preceding claims, characterized in that an elastic pad (58) is disposed between said pressure sensor (40) and the surface (14) of the roller.
  11. The calibration device of claim 10, characterized in that said pad (58) consists essentially of plastic and in particular or silicon.
  12. The calibration device of one of the preceding claims, characterized in that said pressure sensor (40) is a tactile pressure sensor and in particular a piezo element.
  13. The calibration device of one of the preceding claims, characterized in that said sensor holder (38) consists of steel or plastic.
  14. The calibration device of one of the preceding claims, characterized in that said holding blade (36) consists of steel or plastic which is reinforced by carbon fibers.
  15. The calibration device of one of the preceding claims, characterized in that said sensor holder (38) can be screwed to said holding blade (36) at any position.
  16. A method for adjusting a contact pressure of a blade (30) in a scraping device, the blade abutting a periphery of a roller or cylinder in particular a paper machine, a printing machine, a calender or a similar machine, characterized in simulating with a calibration device (34) a blade when the blade is clamped into a blade holder (10), measuring a pressure at which a pressure sensor (40) abuts the periphery of the roller or cylinder; adjusting the blade holder (10) to obtain the desired pressure values; storing settings to be reproduced after replacement of the calibration device by the actual blade (30); and adjusting the blade holder (10) using the stored settings.
  17. The method of claim 16, characterized in that adjusting screws, pressures of adjustment cylinders, inflatable hoses, or weights are varied to adjust the blade holder (10).
  18. The method of claim 16 or 17, characterized in that the pressure sensor (40) is positioned exactly at a location where a scraping edge of the blade (30) comes to rest.
EP05004643A 2004-04-08 2005-03-03 Calibration device Revoked EP1584745B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05004643T PL1584745T3 (en) 2004-04-08 2005-03-03 Calibration device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004018421 2004-04-08
DE102004018421A DE102004018421B3 (en) 2004-04-08 2004-04-08 Scraper pressure calibration unit located at periphery of roller or cylinder of paper making-, printing- or calendering machine comprises mounting strip, holder and sensor

Publications (2)

Publication Number Publication Date
EP1584745A1 EP1584745A1 (en) 2005-10-12
EP1584745B1 true EP1584745B1 (en) 2006-12-20

Family

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Application Number Title Priority Date Filing Date
EP05004643A Revoked EP1584745B1 (en) 2004-04-08 2005-03-03 Calibration device

Country Status (6)

Country Link
US (1) US20050223513A1 (en)
EP (1) EP1584745B1 (en)
AT (1) ATE348915T1 (en)
DE (2) DE102004018421B3 (en)
ES (1) ES2279462T3 (en)
PL (1) PL1584745T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001265A1 (en) 2008-04-18 2009-10-22 Voith Patent Gmbh Scraper device and squeegee device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503922B1 (en) * 2006-11-23 2008-02-15 Bartelmuss Klaus Ing Bearing for scraper blade holder used in papermaking plant, includes pivot with slotted bearing shell, permitting holder to be moved along axis over entire length of scraper blade
EP2403992B1 (en) 2009-03-06 2015-11-11 Voith Patent GmbH Doctor blade with sensing system
FI122440B (en) 2010-07-26 2012-01-31 Metso Paper Inc Arrangements, devices and method for determining cutting pressure
DE102011051929B3 (en) 2011-07-19 2012-10-18 Gerhard Hertel Device for a scraper and scraper arrangement with such a device
DE102011081927A1 (en) * 2011-08-31 2013-02-28 Joh. Clouth Gmbh & Co. Kg Device for holding doctor blades
EP2789734A1 (en) * 2013-04-09 2014-10-15 Valmet Technologies, Inc. Assembly for a device of a fiber web production line
CN106452176A (en) * 2016-09-18 2017-02-22 燕山大学 Smart damping-varying semi-active vibration absorption rubber mat based on vibration generation
GB2582635B (en) * 2019-03-28 2021-12-29 Archipelago Tech Group Ltd Device, method, and assembly for loading nozzles with fluid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI108654B (en) * 1999-04-15 2002-02-28 Metso Paper Inc Load arrangement for paper machine makers
FI4290U1 (en) * 1999-09-14 2000-01-19 Valmet Corp Paper machine scraper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001265A1 (en) 2008-04-18 2009-10-22 Voith Patent Gmbh Scraper device and squeegee device
EP2113608A2 (en) 2008-04-18 2009-11-04 Voith Patent GmbH Scraper device and grater device
EP2113608A3 (en) * 2008-04-18 2009-12-09 Voith Patent GmbH Scraper device and grater device

Also Published As

Publication number Publication date
EP1584745A1 (en) 2005-10-12
DE502005000240D1 (en) 2007-02-01
US20050223513A1 (en) 2005-10-13
DE102004018421B3 (en) 2005-07-21
PL1584745T3 (en) 2007-02-28
ATE348915T1 (en) 2007-01-15
ES2279462T3 (en) 2007-08-16

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