DE10330417A1 - Magnetic speed measuring device for papermaking forming drum with no trunnion - Google Patents
Magnetic speed measuring device for papermaking forming drum with no trunnion Download PDFInfo
- Publication number
- DE10330417A1 DE10330417A1 DE2003130417 DE10330417A DE10330417A1 DE 10330417 A1 DE10330417 A1 DE 10330417A1 DE 2003130417 DE2003130417 DE 2003130417 DE 10330417 A DE10330417 A DE 10330417A DE 10330417 A1 DE10330417 A1 DE 10330417A1
- Authority
- DE
- Germany
- Prior art keywords
- roller
- machine
- permanent magnets
- end wall
- trunnion
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
- G01D5/2033—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
Abstract
Description
Die Erfindung betrifft eine zapfenlose Walze. Zapfenlose Walzen finden Einsatz in Maschinen zur Herstellung einer Faserstoffbahn. Die Walzen werden entweder durch ein umlaufendes Endlosband, wie beispielsweise ein Siebband oder ein Filzband in der Pressenpartie angetrieben. Alternativ haben die Walzen einen eigenen Antrieb in Form eines Direktantriebs mit einem Frequenz-Umrichter. Bei einem derartigen Motor ist der Rotor auf der Innenseite des drehbaren Mantels angebracht, während der Stator auf einer unbeweglichen Achse im Zentrum des sich um dieses drehenden Mantels angeordnet ist.The The invention relates to a journalless roller. Find tenons without rollers Use in machines for producing a fibrous web. The rollers are either by a circulating endless belt, such as a wire belt or a felt belt in the press section driven. Alternatively, the rollers have their own drive in the form of a Direct drive with a frequency converter. In such a Motor, the rotor is mounted on the inside of the rotatable shell, while the stator on a stationary axis in the center of the order this rotating shell is arranged.
Es ist die Aufgabe der Erfindung, die Dreh- oder die Umfangsgeschwindigkeit der Walze genau zu erfassen.It is the object of the invention, the rotational or peripheral speed to accurately grasp the roller.
Erfindungsgemäß wird diese Aufgabe bei einer zapfenlosen Welle dadurch gelöst, dass diese mit einer Einrichtung zur Messung der Drehgeschwindigkeit der Walze ausgestattet ist, die, insbesondere in der Nähe einer äußeren Wand der Walze, ein erstes Messmittel umfasst, das mit einem zweiten, ortsfesten Messmittel außerhalb der Walze zusammenwirkt, um die Drehgeschwindigkeit der Walze zu bestimmen.According to the invention this Task at a tapped shaft solved in that this with a device equipped to measure the rotational speed of the roller, the, especially near an outer wall the roller, a first measuring means comprising a second, stationary measuring equipment outside the roller cooperates to the rotational speed of the roller to determine.
Über die Drehgeschwindigkeit lässt sich bei Kenntnis des Radius der Walze gleichzeitig die Umfangsgeschwindigkeit und damit auch die Geschwindigkeit eines über den Mantel der Walze laufenden entweder von der Walze angetriebenen oder umgekehrt eines die Walze antreibenden Bandes unter der Annahme ermitteln, dass kein Schlupf besteht oder dass dieser vernachlässigbar ist. Die erfindungsgemäße Einrichtung zur Bestimmung der Umfangsgeschwindigkeit ist geeignet für alle Walzen, die keinen Wellenzapfen aufweisen und bei denen ein üblicher Encoder zur Bestimmung der Drehgeschwindigkeit nicht eingesetzt werden kann.About the Turning speed lets with knowledge of the radius of the roller at the same time the peripheral speed and therefore also the speed of running over the mantle of the roller either driven by the roller or vice versa of a roller driving Determine bandes on the assumption that there is no slip or that this negligible is. The inventive device for determining the peripheral speed is suitable for all rollers, which have no shaft journal and where a conventional encoder can not be used to determine the rotational speed.
Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen, der Beschreibung und den Zeichnungen.advantageous Further developments of the invention will become apparent from the dependent claims, the Description and the drawings.
Insbesondere ist es von Vorteil, wenn das erste Messmittel ein kapazitives oder ein induktives Bauelement ist, das mit einem zweiten zugehörigen kapazitiven bzw. induktiven Sensor zusammenwirkt. Grundsätzlich besteht zur Erzeugung eines Signals in einem elektrischen Schaltkreis die Möglichkeit, den Wirk- oder den Blindwiderstand zu ändern. Die Möglichkeit, den Wirkwiderstand oder die Änderung des Wirkwiderstandes während einer Umdrehung der Walze zu messen, wird nicht angestrebt, da hierzu Schleifkontakte notwendig wären, die sich abnutzen und Funken erzeugen. Daher greift die Erfindung die Möglichkeit auf, eine Änderung des Blindwiderstandes, also des induktiven oder des kapazitiven Widerstands, zu ermitteln, weil diese Messungen berührungslos erfolgen.Especially it is advantageous if the first measuring means is a capacitive or an inductive component is that with a second associated capacitive or inductive sensor cooperates. Basically there is generation a signal in an electrical circuit the possibility of the Active or reactance change. The possibility, the resistance or the change of the Effective resistance during one turn of the roller to measure, is not desirable because this Sliding contacts would be necessary which wear and generate sparks. Therefore, the invention takes the possibility on, a change the reactance, ie the inductive or the capacitive resistance, to determine, because these measurements are made without contact.
Besonders bevorzugt ist eine Ausführungsform zur Bestimmung des induktiven Widerstands, bei der das rotierende induktive Bauelement mindestens einen Permanentmagneten oder zumindest ein unterschiedliches magnetisierbares Material umfasst.Especially preferred is an embodiment for determining the inductive resistance at which the rotating inductive component at least one permanent magnet or at least comprises a different magnetisable material.
Um eine hohe Messgenauigkeit zu erreichen, werden mit Vorteil viele Permanentmagneten gleichmäßig über den äußeren Umfang einer Stirnwand der Walze verteilt, die als Impulsgeber für einen ortsfesten Sensor dienen. Die je Zeiteinheit gezählten Impulse dienen zur Berechnung der Drehzahl der Walze. Diese wird beispielsweise auch an einem Bedienpult angezeigt.Around To achieve a high measuring accuracy, many will benefit Permanent magnets evenly over the outer circumference an end wall of the roller distributed, which serves as a pulse generator for a stationary Serve sensor. The pulses counted per time unit are used for the calculation the speed of the roller. This is for example also on a Control panel displayed.
In einer geeigneten Ausführungsform sind die Permanentmagnete von einem auf die Stirnwand der Walze aufgebrachten Ring, insbesondere auf der der Stirnwand der Walze zugewandten Seite des Rings, in Bohrungen aufgenommen.In a suitable embodiment are the permanent magnets of one on the end wall of the roller applied ring, in particular on the end wall of the roller facing side of the ring, received in holes.
Die Erfindung betrifft auch eine Maschine zur Herstellung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn mit einer Walze, wie sie oben beschrieben ist. In dieser ist die Walze beispielsweise entweder durch ein laufendes Band oder durch einen Direktantrieb angetrieben, so dass die Walze ihrerseits das Endlosband antreibt.The The invention also relates to a machine for producing a paper, Cardboard, tissue or another fibrous web with a roller, as described above. In this example, the roller either by a running belt or by a direct drive driven, so that the roller in turn drives the endless belt.
Die Walze ist beispielsweise eine Formierwalze in einer Siebpartie oder eine Abnahmesaugwalze in einer Pressenpartie der Maschine. Auch andere Einsatzorte der zapfenlosen Walze oder des zapfenlosen Zylinders gemäß der Erfindung sind möglich.The Roller is for example a forming roller in a wire section or a Abnahmesaugwalze in a press section of the machine. Also other places of use of the journalless roller or the journalless cylinder according to the invention are possible.
Nachstehend wird die Erfindung in einem Ausführungsbeispiel anhand der Zeichnungen näher erläutert. Es zeigen:below the invention is in an embodiment explained in more detail with reference to the drawings. It demonstrate:
Aus
einem Stoffauflauf wird eine Faserstoffsuspension in an sich bekannter
Weise auf eine Siebpartie aufgebracht, die eine Formierwalze
Die
Formierwalze
In
einem geringen Abstand zu dem Haltering
Auch
ein Versatz zwischen den Permanentmagneten
Auch
eine verbleibende Wandstärke
zwischen 1 und 5 mm zwischen den Bohrungen
Zur
sicheren Diskriminierung zwischen den einzelnen von den Permanentmagneten
Die
Permanentmagnete
An
der (hier nicht dargestellten) Achse, die die Formierwalze
Es
versteht sich und soll durch die oben aufgeführte Beschreibung keineswegs
ausgeschlossen werden, dass die Permanentmagnete
- 11
- Formierwalzeforming roll
- 22
- Halteringretaining ring
- 33
- Bohrungdrilling
- 44
- Permanentmagnetpermanent magnet
- 55
- Magnetfeldsensormagnetic field sensor
- 66
- Datenleitungdata line
- 77
- Auswerteeinheitevaluation
- 88th
- stirnseitige Oberflächefrontal surface
- 99
- Trägercarrier
- 1010
- Halterholder
- 1111
- Aufnahmeadmission
- 1212
- LanglochLong hole
- 1313
- Außengewindeexternal thread
- 1414
- Muttermother
- 1515
- Muttermother
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003130417 DE10330417A1 (en) | 2003-07-04 | 2003-07-04 | Magnetic speed measuring device for papermaking forming drum with no trunnion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003130417 DE10330417A1 (en) | 2003-07-04 | 2003-07-04 | Magnetic speed measuring device for papermaking forming drum with no trunnion |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10330417A1 true DE10330417A1 (en) | 2005-03-24 |
Family
ID=34223066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003130417 Withdrawn DE10330417A1 (en) | 2003-07-04 | 2003-07-04 | Magnetic speed measuring device for papermaking forming drum with no trunnion |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10330417A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009023343A1 (en) * | 2009-05-29 | 2010-12-02 | Hydac Accessories Gmbh | Device for indicating and / or controlling fluids |
DE102020007761A1 (en) | 2020-12-18 | 2022-06-23 | Oerlikon Textile Gmbh & Co. Kg | godet |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD222407A1 (en) * | 1984-03-02 | 1985-05-15 | Freiberg Bergakademie | ARRANGEMENT FOR DETERMINING THE ROLLERS AND THE ROLLING SPEED |
DE4313753A1 (en) * | 1993-04-27 | 1994-11-03 | Fritz Stahlecker | Support plate for a support plate bearing of open-end spinning rotors |
DE4441980A1 (en) * | 1994-11-25 | 1996-05-30 | Agfa Gevaert Ag | Synchronism controller for multiple rollers conveying band forming material, e.g. photographic film, paper, foil |
DE10012202A1 (en) * | 2000-03-13 | 2001-09-27 | Siemens Ag | Shaft position and velocity sensor has sinusoidal edge form does not require frequency generator |
-
2003
- 2003-07-04 DE DE2003130417 patent/DE10330417A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD222407A1 (en) * | 1984-03-02 | 1985-05-15 | Freiberg Bergakademie | ARRANGEMENT FOR DETERMINING THE ROLLERS AND THE ROLLING SPEED |
DE4313753A1 (en) * | 1993-04-27 | 1994-11-03 | Fritz Stahlecker | Support plate for a support plate bearing of open-end spinning rotors |
DE4441980A1 (en) * | 1994-11-25 | 1996-05-30 | Agfa Gevaert Ag | Synchronism controller for multiple rollers conveying band forming material, e.g. photographic film, paper, foil |
DE10012202A1 (en) * | 2000-03-13 | 2001-09-27 | Siemens Ag | Shaft position and velocity sensor has sinusoidal edge form does not require frequency generator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009023343A1 (en) * | 2009-05-29 | 2010-12-02 | Hydac Accessories Gmbh | Device for indicating and / or controlling fluids |
DE102020007761A1 (en) | 2020-12-18 | 2022-06-23 | Oerlikon Textile Gmbh & Co. Kg | godet |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: VOITH PATENT GMBH, 89522 HEIDENHEIM, DE |
|
8110 | Request for examination paragraph 44 | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20120823 |