EP0192835A1 - Apparatus for the continuous mass control of a fibre ribbon - Google Patents

Apparatus for the continuous mass control of a fibre ribbon Download PDF

Info

Publication number
EP0192835A1
EP0192835A1 EP85115578A EP85115578A EP0192835A1 EP 0192835 A1 EP0192835 A1 EP 0192835A1 EP 85115578 A EP85115578 A EP 85115578A EP 85115578 A EP85115578 A EP 85115578A EP 0192835 A1 EP0192835 A1 EP 0192835A1
Authority
EP
European Patent Office
Prior art keywords
roller
rollers
movable roller
plane
movable
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
EP85115578A
Other languages
German (de)
French (fr)
Other versions
EP0192835B1 (en
Inventor
Peter Oswald
Viktor Pietrini
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0192835A1 publication Critical patent/EP0192835A1/en
Application granted granted Critical
Publication of EP0192835B1 publication Critical patent/EP0192835B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/22—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to presence of irregularities in running material
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/06—Arrangements in which a machine or apparatus is regulated in response to changes in the volume or weight of fibres fed, e.g. piano motions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft
    • D01H5/38—Regulating or varying draft in response to irregularities in material ; Measuring irregularities

Definitions

  • the invention relates to a device for continuously determining the mass of a sliver according to the preamble of the first claim.
  • German draft specification No. 1265631 discloses a drafting system in which a fiber sliver is guided between a stationary and driven roller and a movable and towed roller that can be pressed against it.
  • a pulse generator which is not further described, touches the movable roller and, through the movements of this roller, produces a signal which is forwarded to a control system in order to change the speed of the driven roller accordingly.
  • the present invention is therefore based on the object of measuring the strip cross-section, as far as possible, free of interference. to get the tape mass.
  • the object was achieved by the features listed in the characterizing part of the first claim.
  • a device for continuously determining the mass of a fiber sliver 1 comprises a pair of measuring rolls, consisting of a driven roll 2 and a dragged by it, i.e. roller 3 driven by friction.
  • Such rollers as shown in the figures, are referred to as stepped rollers and interlock with one another (see FIG. 2) in such a way that one for measuring the sliver cross-section or. of the sliver mass defined space 4 arises.
  • the driven roller 2 is driven by means of a shaft 5 connected to it in a rotationally fixed manner, which is mounted on both sides of the roller 2 in a bearing 6 and 7, respectively, with practically no play.
  • the bearings 6 and 7 are - in turn attached to a base plate 8.
  • the towed roller 3 is connected in a rotationally fixed manner to an axis 9 which can be rotated practically without play on both sides of the roller 3 in a bearing 10 or 11. is stored.
  • This drag roller 3 is, respectively, to the cross section. to be able to measure the mass of the sliver located in said space 4, movable in the arrow directions M.
  • the two bearings 10 and 11 according ig means of leaf springs 12 having a fixed to the base plate 8 supports 13 (in F. 1 only the support for the bearing 11 is visible) connected.
  • These leaf springs arranged as spring struts are on the one hand in the conveying direction F (FIG. 1) of the F aserbandes 1 buckling, and in the said directions of movement M subjected to bending stress and have to be dimensioned so that buckling is avoided.
  • the sliver In order to be able to measure the sliver cross-section without air inclusion in room 4, the sliver must be compressed in this room. In order to obtain this compression, a pressure is exerted against the bearings 10 and 11 of the towed roller 3 by means of a compression spring 14 with a predetermined force, so that the roller 3 is pressed against the roller 2.
  • the pressure generated in the aforementioned space 4 not only creates forces in the bending direction of the leaf springs 12, i.e. perpendicular to the axes of rotation of measuring rollers 2 and 3, but also parallel to these axes of rotation, i.e. in the directions S and T shown in FIG. 2.
  • the force in the direction T is emitted from the driven roller 2 via the shaft 5 onto the bearings 6 and 7, so that the driven roller is displaced as a result of the fixed and non-elastic arrangement of these bearings 2 cannot be pushed away from the force in the direction T.
  • the section modulus perpendicular to the section modulus in the bending direction is, in proportion, much larger than that in the bending direction, ie the leaf springs 12 yield in the direction of movement M, but are very stiff in the mentioned direction of pressure S.
  • the support of the bearings 10 and 11 on the leaf springs 12 therefore has the advantage that the movable roller 3 cannot be pushed away in the direction S by the force.
  • the bearing 10 can nevertheless be provided with a bracket 101 of length L and the associated carrier 13 with a bracket 131 with the same outreach.
  • one of the two leaf springs used for this bearing and designated by 121 can be provided in a region in which the force in the direction S exerts essentially no moment on the movable roller 3.
  • the length L can be selected to be smaller or larger depending on the selection of the resistance moments of the leaf spring 121.
  • a sensor 18 with its touch surface 19 (FIG. 3) is arranged in a contactless manner relative to a peripheral surface 20 of the towed roller 3 in such a way that the center of this touch surface is essentially in an imaginary position ,
  • the axis of rotation (not marked) of the driven roller 2 and the towed roller 3 containing plane E (Fig. 1 and 3).
  • the sensor 18 is, for example, an eddy current sensor known per se and is fastened to the base plate 8 by means of a stand 21 and connected to the associated converter (not shown) by a connecting cable 22.
  • the stand is essentially Lichen perpendicular to the base plate 8.
  • the sliver 1 is moved by the compression of the compression springs 14 in space 4 by means of the driven roller 2 in the conveying direction F, which leads to movements of the towed roller 3 in the directions M when the sliver mass changes.
  • a distance A existing in the aforementioned fractions of a millimeter between the sensing surface 19 and the scanned peripheral surface 20 of the towed roller is changed, which is determined by the sensor 18 and passed on to the convertor as a voltage signal and then evaluated as a control signal, for example by the Control the speeds of drafting rollers or the speed of a feed roller at the entrance of a card.
  • the contactless scanning of the linear movements of the towed roller 3 in said plane E has the advantage that changes in mass of the fiber structure can be detected by the sensor in an analog linearity.
  • FIGS. 4 and 5 In order to largely avoid incorrect measurements due to different thermal expansion of the elements used, the variant shown with FIGS. 4 and 5 can be used. Elements of FIGS. 1 to 3 are provided with the same reference numbers.
  • This variant offers the advantage that a different thermal expansion of the base plate compared to the rollers has practically no influence in the favorable arrangement or no influence on the distance A between the peripheral surface 20 and the touch surface 19 in the maximum arrangement.
  • leaf springs it is also possible to choose flat steel profiles with appropriate buckling strength and elasticity and with a sufficient section modulus to counteract the force in the S direction.
  • a funnel 23 known per se is used to guide the sliver 1 into the space 4 between the rollers 2 and 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Faserbänder (1) müssen im Laufe des Spinnprozesses gemessen werden, d.h. es muss deren Masse ermittelt werden, um daraus Signale zu erzeugen, mittels welchen die zur Vergleichmässigung dieser Masse notwendigen Maschinenelemente (nicht gezeigt) gesteuert werden können. Zu diesem Zweck verwendet man sogenannte Stufenwalzenpaare, d.h. profilierte Walzen (2 und 3), welche eine beidseitig begrenzte Durchgangsnut (4) für das Faserband (1) definieren, durch welche das Faserband (1) komprimiert hindurchgeführt wird. Eine (3) der beiden Walzen ist dabei bewegbar angeordnet, so dass ein zwischen dieser Walze und einer Tastfläche (19) eines Sensors (18) gebildeter Spalt (A) durch diese Bewegungen vergrössert oder verkleinert wird. Diese Spaltveränderungen bewirken eine Spannungsveränderung im Sensor, welche als Signal für die genannte Steuerung ausgewertet wird.Slivers (1) must be measured during the spinning process, i.e. their mass must be determined in order to generate signals therefrom, by means of which the machine elements (not shown) necessary for equalizing this mass can be controlled. For this purpose, so-called step roller pairs are used, i.e. profiled rollers (2 and 3) which define a through groove (4) for the fiber sliver (1) which is delimited on both sides and through which the fiber sliver (1) is guided in a compressed manner. One (3) of the two rollers is arranged such that it can move, so that a gap (A) formed between this roller and a sensing surface (19) of a sensor (18) is enlarged or reduced by these movements. These changes in gap cause a change in voltage in the sensor, which is evaluated as a signal for the control mentioned.

Description

Die Erfindung betrifft eine Vorrichtung zum kontinuierlichen Ermitteln der Masse eines Faserbandes gemäss Oberbegriff des ersten Anspruches.The invention relates to a device for continuously determining the mass of a sliver according to the preamble of the first claim.

Aus der deutschen Auslegeschrift Nr. 1265631 ist ein Streckwerk bekannt, bei welchem ein Faserband zwischen einer ortsfesten sowie angetriebenen und einer dagegen andrückbaren bewegbaren sowie geschleppten Walze geführt wird. Ein Impulsgeber, welcher nicht weiter beschrieben ist, berührt dabei die bewegbare Walze und ruft durch die Bewegungen dieser Walze ein Signal hervor, das einer Steuerung weitergeleitet wird, um damit die Drehzahl der angetriebenen Walze entsprechend zu verändern.German draft specification No. 1265631 discloses a drafting system in which a fiber sliver is guided between a stationary and driven roller and a movable and towed roller that can be pressed against it. A pulse generator, which is not further described, touches the movable roller and, through the movements of this roller, produces a signal which is forwarded to a control system in order to change the speed of the driven roller accordingly.

Die Nachteile einer solchen Messung bestehen darin, dass durch die Berührung einerseits eine die Tastfläche des Impulsgebers abnützende Reibung entsteht und andererseits, dass durch zwischen Tastfläche und Walzenoberfläche geratende Fremdkörper Fehlmessungen entstehen können, und zwar hauptsächlich, wenn es sich um schmierende, einen Belag bildende Fremdkörper handelt. Solche Fehlmessungen können über eine längere Zeit unbeobachtet bleiben, was über eine längere Zeit zu unerwünschten Fehlern der Garnnummer führt.The disadvantages of such a measurement are that, on the one hand, the contact creates friction that wears the sensing surface of the pulse generator and, on the other hand, that faulty measurements can occur due to foreign bodies that get between the sensing surface and the roller surface, mainly when it comes to smiths foreign matter that forms a covering. Such incorrect measurements can remain unobserved over a longer period of time, which leads to undesirable errors in the yarn number over a longer period.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, ein von Störungen weitestgehend freies Messen des Bandquerschnittes resp. der Bandmasse zu erhalten. Die Aufgabe wurde durch die im Kennzeichnen des ersten Anspruches aufgeführten Merkmale gelöst.The present invention is therefore based on the object of measuring the strip cross-section, as far as possible, free of interference. to get the tape mass. The object was achieved by the features listed in the characterizing part of the first claim.

Vorteilhafte Ausführungsformen sind in den weiteren Ansprüchen aufgeführt.Advantageous embodiments are listed in the further claims.

Die Erfindung wird im folgenden anhand von lediglich Ausführungswege darstellenden Zeichnungen näher erläutert. Es zeigt:

  • Fig. 1 Eine Ansicht der erfindungsgemässen Vorrichtung in Richtung I (Fig. 2), halbschematisch dargestellt,
  • Fig. 2 eine Draufsicht der Vorrichtung von Fig. 1, teilweise dargestellt,
  • Fig. 3 einen Schnitt durch einen Teil der Vorrichtung von Fig. l, gemäss den Linien II (Fig. 2).
  • Fig. 4 eine Variante der Vorrichtung von Fig. 1 in Richtung III (Fig. 5) gesehen,
  • Fig. 5 eine Draufsicht der Vorrichtung von Fig. 4, teilweise dargestellt.
The invention is explained in more detail below with the aid of drawings which only show execution routes. It shows:
  • 1 is a view of the device according to the invention in the direction I (Fig. 2), shown semi-schematically,
  • 2 is a plan view of the device of FIG. 1, partially shown,
  • Fig. 3 shows a section through part of the device of Fig. 1, according to lines II (Fig. 2).
  • 4 seen a variant of the device of FIG. 1 in the direction III (FIG. 5),
  • 5 is a top view of the device of FIG. 4; partially shown.

Eine Vorrichtung zum kontinuierlichen Ermitteln der Masse eines Faserbandes 1 umfasst ein Messwalzenpaar, bestehend aus einer angetriebenen Walze 2 und einer von dieser geschleppten, d.h. durch Reibung angetriebenen Walze 3. Solche wie in den Figuren gezeigten Walzen werden als Stufenwalzen bezeichnet und greifen derart ineinander (siehe Fig. 2), dass dabei ein für das Messen des Faserbandquerschnittes resp. der Faserbandmasse abgegrenzter Raum 4 entsteht.A device for continuously determining the mass of a fiber sliver 1 comprises a pair of measuring rolls, consisting of a driven roll 2 and a dragged by it, i.e. roller 3 driven by friction. Such rollers, as shown in the figures, are referred to as stepped rollers and interlock with one another (see FIG. 2) in such a way that one for measuring the sliver cross-section or. of the sliver mass defined space 4 arises.

Die angetriebene Walze 2 wird mittels einer damit drehfest verbundenen Welle 5 angetrieben, welche beidseits der Walze 2 in einem Lager 6 respektive 7 je praktisch spielfrei gelagert ist. Die Lager 6 und 7 sind - ihrerseits auf einer Grundplatte 8 befestigt.The driven roller 2 is driven by means of a shaft 5 connected to it in a rotationally fixed manner, which is mounted on both sides of the roller 2 in a bearing 6 and 7, respectively, with practically no play. The bearings 6 and 7 are - in turn attached to a base plate 8.

Die geschleppte Walze 3 ist drehfest mit einer Achse 9 verbunden, welche beidseits der Walze 3 in einem Lager 10 respektive 11 praktisch spielfrei drehbar ge-. lagert ist. Diese geschleppte Walze 3 ist, um den Querschnitt resp. die Masse des sich im genannten Raum 4 befindlichen Faserbandes messen zu können, in den Pfeilrichtungen M bewegbar. Um diese, sich nur um Bruchteile von Millimetern handelnden Bewegungen reibungsfrei zu ermöglichen, sind die beiden Lager 10 und 11 (in Fig. 1 nur Lager 11 sichtbar) je mittels Blattfedern 12 mit einem auf der Grundplatte 8 befestigten Träger 13 (in Fig. 1 ist nur der Träger für das Lager 11 sichtbar) verbunden. Diese als Federbeine angeordneten Blattfedern sind einerseits in der Förderrichtung F (Fig. 1) des Faserbandes 1 auf Knickung und in den genannten Bewegungsrichtungen M auf Biegung beansprucht und sind so zu dimensionieren, dass eine Knickung vermieden wird.The towed roller 3 is connected in a rotationally fixed manner to an axis 9 which can be rotated practically without play on both sides of the roller 3 in a bearing 10 or 11. is stored. This drag roller 3 is, respectively, to the cross section. to be able to measure the mass of the sliver located in said space 4, movable in the arrow directions M. In order to allow this friction is only fractions of a millimeter acting movements, the two bearings 10 and 11 (in Fig. 1, only bearing 11 visible) according ig means of leaf springs 12 having a fixed to the base plate 8 supports 13 (in F. 1 only the support for the bearing 11 is visible) connected. These leaf springs arranged as spring struts are on the one hand in the conveying direction F (FIG. 1) of the F aserbandes 1 buckling, and in the said directions of movement M subjected to bending stress and have to be dimensioned so that buckling is avoided.

Um den Faserbandquerschnitt ohne Lufteinschluss im Raum 4 messen zu können, muss das Faserband in diesem Raum verdichtet werden. Um diese Verdichtung zu erhalten, wird gegen die Lager 10 und 11 der geschleppten Walze 3 je mittels einer Druckfeder 14 mit einer vorbestimmten Kraft ein Druck ausgeübt, so dass die Walze 3 gegen die Walze 2 gedrückt wird.In order to be able to measure the sliver cross-section without air inclusion in room 4, the sliver must be compressed in this room. In order to obtain this compression, a pressure is exerted against the bearings 10 and 11 of the towed roller 3 by means of a compression spring 14 with a predetermined force, so that the roller 3 is pressed against the roller 2.

Diese Federn 14 sind dabei an einem zum Träger 13 gehörenden Arm 15 (in Fig. 1 nur einer sichtbar) befestigt und drücken gegen eine diesem Arm 15 zugewandte Fläche 16 resp. 17 des Lagers 10 resp. ll.These springs 14 are attached to an arm 15 belonging to the carrier 13 (only one visible in FIG. 1) and press against a surface 16 or arm 16 facing this arm. 17 of the camp 10 respectively. ll.

Durch den im vorgenannten Raume 4 erzeugten Druck entstehen nicht nur Kräfte in der Biegerichtung der Blattfedern 12, d.h. senkrecht zu den Drehachsen der Messwalzen 2 und 3, sondern auch noch parallel zu diesen Drehachsen, d.h. in den in Fig. 2 eingezeichneten Richtungen S und T. Die Kraft in Richtung T wird dabei von der angetriebenen Walze 2 über die Welle 5 auf die Lager 6 und 7 abgegeben, sodass infolge der ortsfesten und nicht elastischen Anordnung dieser Lager sich die angetriebene Walze 2 von der Kraft in Richtung T nicht wegdrücken lässt.The pressure generated in the aforementioned space 4 not only creates forces in the bending direction of the leaf springs 12, i.e. perpendicular to the axes of rotation of measuring rollers 2 and 3, but also parallel to these axes of rotation, i.e. in the directions S and T shown in FIG. 2. The force in the direction T is emitted from the driven roller 2 via the shaft 5 onto the bearings 6 and 7, so that the driven roller is displaced as a result of the fixed and non-elastic arrangement of these bearings 2 cannot be pushed away from the force in the direction T.

Andererseits ist es bekannt, dass bei Blattfedern das Widerstandsmoment senkrecht zum Widerstandsmoment in Biegerichtung, im Verhältnis sehr viel grösser ist als dasjenige in Biegerichtung, d.h. dass die Blattfedern 12 in der Bewegungsrichtung M nachgeben, in der erwähnten Druckrichtung S jedoch sehr steif sind. Das Abstützen der Lager 10 und 11 auf den Blattfedern 12 hat deshalb den Vorteil, dass sich auch die bewegbare Walze 3 nicht von der Kraft in Richtung S wegdrücken lässt.On the other hand, it is known that in the case of leaf springs, the section modulus perpendicular to the section modulus in the bending direction is, in proportion, much larger than that in the bending direction, ie the leaf springs 12 yield in the direction of movement M, but are very stiff in the mentioned direction of pressure S. The support of the bearings 10 and 11 on the leaf springs 12 therefore has the advantage that the movable roller 3 cannot be pushed away in the direction S by the force.

Wie in den Figuren 1 und 2 mit punktierter Linie eingezeichnet, kann trotzdem das Lager 10 mit einem Ausleger 101 von der Länge L und der dazugehörige Träger 13 mit einem Ausleger 131 mit gleichweiter Ausladung versehen werden. Dadurch kann eine der beiden für dieses Lager verwendete und mit 121 bezeichnete Blattfeder in einem Bereich vorgesehen werden, in welchem die Kraft in Richtung S im wesentlichen kein Moment auf die bewegbare Walze 3. ausübt. Dabei versteht es sich, dass die Länge L je nach Wahl der Widerstandsmomente der Blattfeder 121 kleiner oder grösser gewählt werden kann.As shown in FIGS. 1 and 2 with a dotted line, the bearing 10 can nevertheless be provided with a bracket 101 of length L and the associated carrier 13 with a bracket 131 with the same outreach. As a result, one of the two leaf springs used for this bearing and designated by 121 can be provided in a region in which the force in the direction S exerts essentially no moment on the movable roller 3. It goes without saying that the length L can be selected to be smaller or larger depending on the selection of the resistance moments of the leaf spring 121.

Zur Messung der Bewegungen in den genannten Richtungen M der geschleppten Walze 3 ist ein Sensor 18 mit seiner Tastfläche 19 (Fig. 3) berührungslos gegenüber einer Umfangsfläche 20 der geschleppten Walze 3 angeordnet und zwar derart, dass die Mitte dieser Tastfläche im wesentlichen in einer gedachten, die Drehachse (nicht gekennzeichnet) der angetriebenen Walze 2 und der geschleppten Walze 3 beinhaltenden Ebene E (Fig. 1 und 3) liegt.To measure the movements in the above-mentioned directions M of the towed roller 3, a sensor 18 with its touch surface 19 (FIG. 3) is arranged in a contactless manner relative to a peripheral surface 20 of the towed roller 3 in such a way that the center of this touch surface is essentially in an imaginary position , The axis of rotation (not marked) of the driven roller 2 and the towed roller 3 containing plane E (Fig. 1 and 3).

Der Sensor 18, ist beispielsweise ein an sich bekannter Wirbelstromaufnehmer und ist mittels eines Ständers 21 auf der Grundplatte 8 befestigt sowie durch ein Verbindungskabel 22 mit dem dazugehörigen Convertor (nicht gezeigt) verbunden. Der Ständer steht dabei im wesentlichen senkrecht zur Grundplatte 8.The sensor 18 is, for example, an eddy current sensor known per se and is fastened to the base plate 8 by means of a stand 21 and connected to the associated converter (not shown) by a connecting cable 22. The stand is essentially Lichen perpendicular to the base plate 8.

Im Betrieb wird das Faserband 1 durch das durch die Druckfedern 14 verursachte Komprimieren desselben im Raume 4 mittels der angetriebenen Walze 2 in Förderrichtung F fortbewegt, was bei veränderter Faserbandmasse zu Bewegungen der geschleppten Walze 3 in den Richtungen M führt.In operation, the sliver 1 is moved by the compression of the compression springs 14 in space 4 by means of the driven roller 2 in the conveying direction F, which leads to movements of the towed roller 3 in the directions M when the sliver mass changes.

Durch diese Bewegungen wird ein zwischen der Tastfläche 19 und der abgetasteten Umfangsfläche 20 der geschleppten Walze bestehender Abstand A in den genannten Bruchteilen eines Millimeters verändert, was vom Sensor 18 festgestellt und als Spannungssignal an den Convertor weitergegeben und anschliessend als Steuersignal ausgewertet wird, um beispielsweise die Drehzahlen von Streckwerkswalzen oder die Drehzahl einer Speisewalze am Eingang einer Karde zu steuern.As a result of these movements, a distance A existing in the aforementioned fractions of a millimeter between the sensing surface 19 and the scanned peripheral surface 20 of the towed roller is changed, which is determined by the sensor 18 and passed on to the convertor as a voltage signal and then evaluated as a control signal, for example by the Control the speeds of drafting rollers or the speed of a feed roller at the entrance of a card.

Durch das kontaktlose Abtasten der linearen Bewegungen der geschleppten Walze 3 in der genannten Ebene E entsteht der Vorteil, dass Masseveränderungen des Faserverbandes in einer analogen Linearität vom Sensor erfasst werden können.The contactless scanning of the linear movements of the towed roller 3 in said plane E has the advantage that changes in mass of the fiber structure can be detected by the sensor in an analog linearity.

Um Fehlmessungen durch unterschiedliche Wärmedehnung der verwendeten Elemente weitestgehend zu vermeiden, kann die mit den Figuren 4 und 5 gezeigte Variante verwendet werden. Darin sind Elemente der Figuren 1 bis 3 mit denselben Bezugszeichen versehen.In order to largely avoid incorrect measurements due to different thermal expansion of the elements used, the variant shown with FIGS. 4 and 5 can be used. Elements of FIGS. 1 to 3 are provided with the same reference numbers.

Das wesentliche Kriterium dieser Variante besteht darin, dass der Sensor 18 auf der gegenüberliegenden Seite, d.h. neben und parallel zur angetriebenen Walze 2 angeordnet ist, was gegenüber der Vorrichtung der Figuren 1 bis 3 folgende Veränderungen notwendig macht:

  • 1. Die angetriebene Walze 2 wird, wie in Fig. 5 gezeigt, sogenannt fliegend gelagert, sodass die Welle 5 auf derselben Seite der Walze 2 mit dem Lager 6 und 7 gelagert ist.
  • 2. Der Sensor 18 wird mittels Ständer 21 auf der, der Welle 5 gegenüber liegenden Seite der angetriebenen Walze 2 angeordnet und zwar in einer günstigen Anordnung derart, dass der Ständer 21 und die Welle 5 hintereinander, in Achsrichtung dieser Welle 5 gesehen, angeordnet sind.
The essential criterion of this variant is that the sensor 18 on the opposite side, that is, arranged next to and parallel to the driven roller 2, which makes the following changes necessary compared to the device of FIGS. 1 to 3:
  • 1. The driven roller 2, as shown in F ig. 5, so-called overhung, so that the shaft 5 is mounted on the same side of the roller 2 with the bearings 6 and 7.
  • 2. The sensor 18 is arranged by means of a stand 21 on the side of the driven roller 2 opposite the shaft 5, in a favorable arrangement such that the stand 21 and the shaft 5 are arranged one behind the other, as seen in the axial direction of this shaft 5 .

In einer maximalen Anordnung würde sich die entsprechende Symmetrieebene (nicht gekennzeichnet) des Ständers 21 mit einer gedachten, die Drehachse dieser Welle 5 beinhaltenden, senkrecht zur früher erwähnten Ebene E stehenden Ebene D decken.

  • 3. Je nach Dimension des Sensors 18 muss die Breite B (Fig. 5) der Umfangsfläche 20 vergrössert werden, um die Abtastung auf der ganzen Fläche 19 des Sensors 18 zu gewährleisten.
In a maximum arrangement, the corresponding plane of symmetry (not marked) of the stator 21 would coincide with an imaginary plane D, which contains the axis of rotation of this shaft 5 and is perpendicular to the plane E mentioned earlier.
  • 3. Depending on the dimension of the sensor 18, the width B (FIG. 5) of the peripheral surface 20 has to be increased in order to ensure the scanning on the entire surface 19 of the sensor 18.

Diese Variante bietet den Vorteil, dass eine zu den Walzen unterschiedliche Wärmedehnung der Grundplatte in der günstigen Anordnung praktisch keinen oder in der maximalen Anordnung keinen Einfluss auf den Abstand A zwischen der Umfangsfläche 20 und der Tastfläche 19 hat. Anstelle von Blattfedern können auch Flachstahlprofile von entsprechender Knickfestigkeit und Elastizität und mit einem genügenden Widerstandsmoment gewählt werden, um der Kraft in Richtung S genügend entgegenzuwirken.This variant offers the advantage that a different thermal expansion of the base plate compared to the rollers has practically no influence in the favorable arrangement or no influence on the distance A between the peripheral surface 20 and the touch surface 19 in the maximum arrangement. Instead of leaf springs, it is also possible to choose flat steel profiles with appropriate buckling strength and elasticity and with a sufficient section modulus to counteract the force in the S direction.

Die eigentliche Dimensionierung der Blattfedern oder Flachstahlprofile ist eine Frage der Konstruktion und muss von Fall zu Fall bestimmt werden.The actual dimensioning of the leaf springs or flat steel profiles is a question of construction and must be determined on a case-by-case basis.

Zur Führung des Faserbandes 1 in den Raum 4 zwischen den Walzen 2 und 3 wird ein an sich bekannter Trichter 23 verwendet.A funnel 23 known per se is used to guide the sliver 1 into the space 4 between the rollers 2 and 3.

Claims (9)

1. Vorrichtung zum kontinuierlichen Ermitteln des Querschnittes resp. der Masse eines Faserbandes (1), mit einem Paar gegeneinander pressbaren Messwalzen, (2 und 3) wobei eine der Walzen ortsfest und angetrieben und die andere davon im wesentlichen geradlinig wegbewegbar und geschleppt angeordnet ist, sowie mit einem mit einer Tastfläche (19) versehenen Tastorgan (18) zum Messen der Bewegungen der bewegbaren Walze (3), dadurch gekennzeichnet, dass das Tastorgan (18) ein an sich bekanntes berührungsloses Tastorgan ist, dessen Tastfläche (19) sich im wesentlichen in der die beiden Mittelachsen der Walzen (2 und 3) beinhaltenden gedachten Ebene (E) und gegenüber einer Umfangsfläche (20) der bewegbaren Walze (3) liegt.1. Device for continuously determining the cross section, respectively. the mass of a fiber sliver (1), with a pair of measuring rollers which can be pressed against one another (2 and 3), one of the rollers being stationary and driven and the other of which is arranged so as to be movable and dragged essentially in a straight line, and with one having a sensing surface (19) Probe element (18) for measuring the movements of the movable roller (3), characterized in that the probe element (18) is a contactless probe element known per se, the probe surface (19) of which essentially lies in the two central axes of the rollers (2 and 3) containing imaginary plane (E) and opposite a peripheral surface (20) of the movable roller (3). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Tastorgan (18) sowie die bewegbare Walze (3) derart im wesentlichen von der Erwärmung der Vorrichtung unbeeinflusst abgestützt sind, dass die Messresultate im wesentlichen von dieser Erwärmung unbeeinflusst sind.2. Device according to claim 1, characterized in that the sensing element (18) and the movable roller (3) are supported essentially unaffected by the heating of the device in such a way that the measurement results are essentially unaffected by this heating. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das Tastorgan (18) und die bewegbare Walze (3) auf Stützen (12, 21) abgestützt sind, welche im wesentlichen senkrecht zur genannten Ebene (E) angeordnet sind.3. Device according to claim 2, characterized in that the feeler member (18) and the movable roller (3) are supported on supports (12, 21) which are arranged substantially perpendicular to said plane (E). 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Tastorgan (18) neben der angetriebenen Walze (2) angeordnet ist.4. The device according to claim 3, characterized in that the sensing element (18) in addition to the driven Roller (2) is arranged. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das Tastorgan (18) derart neben der angetriebenen Walze (2) angeordnet ist, dass die Stütze (21) des Tastorganes und die Welle (5) der angetriebenen Walze (2) hintereinander, in Achsrichtung der Welle (5) der angetriebenen Walze (2) gesehen, angeordnet sind.5. The device according to claim 4, characterized in that the sensing element (18) is arranged next to the driven roller (2) such that the support (21) of the sensing element and the shaft (5) of the driven roller (2) one behind the other, in Axial direction of the shaft (5) of the driven roller (2) seen, are arranged. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Stütze (21) des Tastorganes (18) und die genannte Welle (5) derart hintereinander angeordnet sind, dass sich die entsprechende Symmetrieebene (nicht gekennzeichnet) der Stütze (21) mit einer gedachten, die Drehachse dieser Welle (5) beinhaltenden, senkrecht zur genannten Ebene (E) stehenden Ebene (D) deckt.6. The device according to claim 5, characterized in that the support (21) of the sensing element (18) and said shaft (5) are arranged one behind the other such that the corresponding plane of symmetry (not marked) of the support (21) with an imaginary , The axis of rotation of this shaft (5) containing, perpendicular to said plane (E) plane (D) covers. 7- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Stützen (12) der bewegbaren Walze (3) Blattfedern sind, welche derart mit ihrer Breite parallel zur Mittelachse der Walze (3) angeordnet sind, dass die Bewegungen der bewegbaren Walze (3) reibungsfrei durchführbar sind.7 - Device according to claim 3, characterized in that the supports (12) of the movable roller (3) are leaf springs which are arranged with their width parallel to the central axis of the roller (3) such that the movements of the movable roller (3) can be carried out smoothly. 8. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass für das Anpressen der bewegbaren Walze (3) gegen die ortsfeste Walze (2) beidseits der bewegbaren Walze eine Feder (14) derart vorgesehen ist, dass die Kraftübertragung reibungsfrei durchführbar ist.8. The device according to claim 3, characterized in that for pressing the movable roller (3) against the fixed roller (2) on both sides of the movable roller, a spring (14) is provided such that the power transmission can be carried out smoothly. 9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die gegeneinander pressbaren Walzen (2 und 3) sogenannte Stufenwalzen sind.9. The device according to claim 1, characterized in that the rollers (2 and 3) which can be pressed against one another are so-called stepped rollers.
EP85115578A 1985-02-15 1985-12-07 Apparatus for the continuous mass control of a fibre ribbon Expired EP0192835B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH719/85 1985-02-15
CH71985 1985-02-15

Publications (2)

Publication Number Publication Date
EP0192835A1 true EP0192835A1 (en) 1986-09-03
EP0192835B1 EP0192835B1 (en) 1989-04-26

Family

ID=4193583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115578A Expired EP0192835B1 (en) 1985-02-15 1985-12-07 Apparatus for the continuous mass control of a fibre ribbon

Country Status (5)

Country Link
US (1) US4646387A (en)
EP (1) EP0192835B1 (en)
JP (1) JPH07119756B2 (en)
DE (1) DE3569760D1 (en)
IN (1) IN166675B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826861A1 (en) * 1987-08-28 1989-03-16 Textima Veb K Device for the continuous determination of the mass of a fibre sliver by means of two rollers pressable against one another
US4987648A (en) * 1988-04-19 1991-01-29 Rieter Machine Works, Ltd. Combing machine with workstations having a monitoring unit at each workstation
EP0417614A1 (en) * 1989-09-15 1991-03-20 Maschinenfabrik Rieter Ag Apparatus for the continuous condensing or the control of the fibre ribbon mass
EP0431481A1 (en) * 1989-12-04 1991-06-12 Maschinenfabrik Rieter Ag Method of continuous determination of thinness of fibres in yarns and relative apparatus for application of the same
WO1991016595A1 (en) * 1990-04-19 1991-10-31 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Measurement device
EP0455014A1 (en) * 1990-04-27 1991-11-06 Maschinenfabrik Rieter Ag Sliver density sensing apparatus
EP0544425A1 (en) * 1991-11-26 1993-06-02 Hollingsworth (U.K.) Limited A coiler
US5289381A (en) * 1989-12-04 1994-02-22 Maschinenfabrik Rieter Ag Method and apparatus for continuously determining the fineness of fibers in slivers
EP0617149A1 (en) * 1993-02-25 1994-09-28 SPINNEREIMASCHINENBAU LEISNIG GmbH Method for evening textile fibre bands
EP0864674A2 (en) * 1997-03-14 1998-09-16 Rieter Ingolstadt Spinnereimaschinenbau AG Device for producing or further processing sliver
CN101654819A (en) * 2008-08-19 2010-02-24 特鲁菲舍尔股份有限公司及两合公司 Apparatus used on spinning room preparation machine
DE102009050264A1 (en) 2009-10-21 2011-05-12 TRüTZSCHLER GMBH & CO. KG Device on a spinning preparation machine, e.g. Card, track, comber or flyer, with a pair of feeler rollers
DE10327469B4 (en) * 2002-07-06 2016-03-10 Rieter Ingolstadt Gmbh Sliver cross-section measuring device

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619248A1 (en) * 1986-06-07 1987-12-10 Zinser Textilmaschinen Gmbh METHOD FOR CONTROLLING DISTORTION OF A RIBBON IN A TEXTILE MACHINE
US4947520A (en) * 1987-10-13 1990-08-14 John D. Hollingsworth On Wheels, Inc. Feed roll sensor for a textile carding machine
US4839944A (en) * 1987-10-13 1989-06-20 John D. Hollingsworth On Wheels, Inc. Feed roll sensor for a textile carding machine
US5010494A (en) * 1988-09-09 1991-04-23 North Carolina State University Method and apparatus for detecting mechanical roll imperfections in a roller drafting system
DE3834110A1 (en) * 1988-10-07 1990-04-12 Truetzschler & Co METHOD AND DEVICE FOR DETECTING THE MOVEMENT OF TEXTILE FIBER TAPES, e.g. CARD TAPES
CH681310A5 (en) * 1990-05-30 1993-02-26 Zellweger Uster Ag
US5146651A (en) * 1990-12-21 1992-09-15 E. I. Du Pont De Nemours And Company Process and apparatus for tow cross-section measurement and control
JP3250204B2 (en) * 1993-09-14 2002-01-28 豊和工業株式会社 Short-period spot control device for cards
DE19500189B4 (en) * 1995-01-05 2006-09-14 Rieter Ingolstadt Spinnereimaschinenbau Ag Method for pressing a feeler on a fiber structure in a tape guide and device for their production
DE102005023992A1 (en) * 2005-05-20 2006-11-23 TRüTZSCHLER GMBH & CO. KG Device on a spinning preparation machine, e.g. Carding, carding, track, combing machine or the like, for determining the mass and / or mass variations of a fiber material, e.g. at least one sliver, non-woven fabric or the like., Of cotton, chemical fibers o. The like.
DE102008038392A1 (en) * 2008-08-19 2010-02-25 TRüTZSCHLER GMBH & CO. KG Apparatus for or on a spinning preparation machine having a drafting system for drawing stranded fibrous material
CH717103A1 (en) 2020-01-31 2021-08-16 Uster Technologies Ag Procedure for quality control in a spinning preparation process.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957625A (en) * 1961-07-14 1964-05-06 Cotton Silk & Man Made Fibres Scutcher control mechanism
CH490526A (en) * 1969-07-09 1970-05-15 Rieter Ag Maschf Process for the continuous dosing of fiber material for presentation to spinning machines
FR2031012A5 (en) * 1969-06-24 1970-11-13 Zinser Textilmaschinen Gmbh
FR2211549A1 (en) * 1972-12-05 1974-07-19 Rieter Ag Maschf
GB2061338A (en) * 1979-09-27 1981-05-13 Elitex Zavody Textilniho Method of and Device for Compensating Errors in Sliver Density Control in Textile Machines

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265631B (en) * 1958-10-07 1968-04-04 Cotton Silk & Man Made Fibres Device for comparing fiber material in a beater or a regulating drafting system for spinning machines
US3709406A (en) * 1970-10-14 1973-01-09 Rieter Ag Maschf Method and apparatus for producing an even continuous layer of fibers
US3796094A (en) * 1972-09-25 1974-03-12 Eastman Kodak Co Method and apparatus for continuously detecting abnormal cross-sectional areas in running tow
DE2510451C3 (en) * 1975-03-11 1984-04-26 Agfa-Gevaert Ag, 5090 Leverkusen Device for mechanical scanning of local thickenings in paper and film webs
AT334118B (en) * 1975-07-15 1976-12-27 Gao Ges Automation Org MEASURING DEVICE FOR MEASURING THICKNESS DIFFERENCES IN RECORDING MEDIA, SUCH AS BANKNOTES ETC.
JPS5414260A (en) * 1977-07-05 1979-02-02 Aron Kasei Kk Thickness meter
JPS5597506U (en) * 1978-12-25 1980-07-07
JPS55165840A (en) * 1979-06-13 1980-12-24 Laurel Bank Mach Co Ltd Double feed detector of paper carrier
DE3205776C3 (en) * 1982-02-18 1996-06-13 Truetzschler Gmbh & Co Kg Method and device for regulating the amount of fibers to be fed to a card

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957625A (en) * 1961-07-14 1964-05-06 Cotton Silk & Man Made Fibres Scutcher control mechanism
FR2031012A5 (en) * 1969-06-24 1970-11-13 Zinser Textilmaschinen Gmbh
CH490526A (en) * 1969-07-09 1970-05-15 Rieter Ag Maschf Process for the continuous dosing of fiber material for presentation to spinning machines
FR2211549A1 (en) * 1972-12-05 1974-07-19 Rieter Ag Maschf
GB2061338A (en) * 1979-09-27 1981-05-13 Elitex Zavody Textilniho Method of and Device for Compensating Errors in Sliver Density Control in Textile Machines

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826861A1 (en) * 1987-08-28 1989-03-16 Textima Veb K Device for the continuous determination of the mass of a fibre sliver by means of two rollers pressable against one another
US4987648A (en) * 1988-04-19 1991-01-29 Rieter Machine Works, Ltd. Combing machine with workstations having a monitoring unit at each workstation
EP0417614A1 (en) * 1989-09-15 1991-03-20 Maschinenfabrik Rieter Ag Apparatus for the continuous condensing or the control of the fibre ribbon mass
US5289381A (en) * 1989-12-04 1994-02-22 Maschinenfabrik Rieter Ag Method and apparatus for continuously determining the fineness of fibers in slivers
EP0431481A1 (en) * 1989-12-04 1991-06-12 Maschinenfabrik Rieter Ag Method of continuous determination of thinness of fibres in yarns and relative apparatus for application of the same
WO1991016595A1 (en) * 1990-04-19 1991-10-31 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Measurement device
US5157810A (en) * 1990-04-27 1992-10-27 Maschinenfabrik Rieter Ag Apparatus for measuring the mass of a sliver
EP0455014A1 (en) * 1990-04-27 1991-11-06 Maschinenfabrik Rieter Ag Sliver density sensing apparatus
EP0544425A1 (en) * 1991-11-26 1993-06-02 Hollingsworth (U.K.) Limited A coiler
US5339495A (en) * 1991-11-26 1994-08-23 Hollingsworth (U.K.) Ltd. Coiler and autoleveller
EP0617149A1 (en) * 1993-02-25 1994-09-28 SPINNEREIMASCHINENBAU LEISNIG GmbH Method for evening textile fibre bands
EP0864674A2 (en) * 1997-03-14 1998-09-16 Rieter Ingolstadt Spinnereimaschinenbau AG Device for producing or further processing sliver
EP0864674A3 (en) * 1997-03-14 1999-05-12 Rieter Ingolstadt Spinnereimaschinenbau AG Device for producing or further processing sliver
DE10327469B4 (en) * 2002-07-06 2016-03-10 Rieter Ingolstadt Gmbh Sliver cross-section measuring device
CN101654819A (en) * 2008-08-19 2010-02-24 特鲁菲舍尔股份有限公司及两合公司 Apparatus used on spinning room preparation machine
DE102008049363A1 (en) * 2008-08-19 2010-02-25 TRüTZSCHLER GMBH & CO. KG Apparatus for or on a spinning preparation machine having a drafting system for drawing stranded fibrous material
DE102008049363B4 (en) 2008-08-19 2022-10-13 Trützschler Group SE Device for or on a spinning preparation machine, which has a drafting system for drafting strand-like fiber material
DE102009050264A1 (en) 2009-10-21 2011-05-12 TRüTZSCHLER GMBH & CO. KG Device on a spinning preparation machine, e.g. Card, track, comber or flyer, with a pair of feeler rollers

Also Published As

Publication number Publication date
EP0192835B1 (en) 1989-04-26
IN166675B (en) 1990-06-30
JPH07119756B2 (en) 1995-12-20
JPS61187658A (en) 1986-08-21
US4646387A (en) 1987-03-03
DE3569760D1 (en) 1989-06-01

Similar Documents

Publication Publication Date Title
EP0192835B1 (en) Apparatus for the continuous mass control of a fibre ribbon
DE102005033180B4 (en) Device for detecting a parameter on a plurality of fiber bands fed to a drafting system of a spinning machine
CH626123A5 (en)
EP0478734A1 (en) Measurement device.
EP0467117A1 (en) Device for measuring the thickness and/or the unevenness of fleeces or laps in preparational spinning machines
DE19908371A1 (en) Sliver drawing apparatus takes slivers from cans into straight and parallel paths through sliver thickness monitor to drawing unit giving high production speeds without fiber damage
DE102008049363A1 (en) Apparatus for or on a spinning preparation machine having a drafting system for drawing stranded fibrous material
DE102017130516A1 (en) Method for measuring the tension of a thread and device for the deflection of a running thread
CH672324A5 (en)
EP1190974A2 (en) Winding machine in particular for sensitive material
EP0864674B1 (en) Device for producing or further processing sliver
WO2002016683A2 (en) Method for operating drawing equipment and drawing equipment
DE4300633A1 (en) Synthetic multifilament yarn prodn. - in which yarn tension measurement is based on the movement of a flat spring in line with the yarn
DE102009050264A1 (en) Device on a spinning preparation machine, e.g. Card, track, comber or flyer, with a pair of feeler rollers
CH699464B1 (en) Device for a spinning preparation machine, in particular a carding, route, comber or flyer.
WO2000073786A2 (en) Device for measuring the frictional properties of textile fibers
WO2006070008A1 (en) Method for determining the linear density or the cross-section of a textile fiber composite and corresponding device
EP0891435B1 (en) Device for measuring the thickness and/or unevenness of wadding or non-wovens
DE102008031130A1 (en) Capacitive sensor unit for monitoring the quality of fiber material and thus equipped machine for the production of knitwear
EP0417614B1 (en) Apparatus for the continuous condensing or the control of the fibre ribbon mass
DE19819728A1 (en) Thickness measuring device for a fibre sliver combination in a draw frame
DE3722141C2 (en) Device for homogenizing the sliver or nonwoven in a card, card or the like.
DE9110393U1 (en) Device for measuring the winding thickness of threads
EP0492004A1 (en) Device for determining the gap between a pair of rolls
DE202008012201U1 (en) Device for or on a spinning preparation machine, in particular card, track, comber or flyer, for correcting a measurement signal

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19860929

17Q First examination report despatched

Effective date: 19880108

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 3569760

Country of ref document: DE

Date of ref document: 19890601

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: GUZZI E RAVIZZA S.R.L.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19911118

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19921112

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19921207

ITTA It: last paid annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19921207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20041217

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20041220

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL