EP0245236A1 - Process and device for measuring the warp tension in automatic looms and similar. - Google Patents

Process and device for measuring the warp tension in automatic looms and similar.

Info

Publication number
EP0245236A1
EP0245236A1 EP85904080A EP85904080A EP0245236A1 EP 0245236 A1 EP0245236 A1 EP 0245236A1 EP 85904080 A EP85904080 A EP 85904080A EP 85904080 A EP85904080 A EP 85904080A EP 0245236 A1 EP0245236 A1 EP 0245236A1
Authority
EP
European Patent Office
Prior art keywords
fabric
vibrating member
thread sheet
vibrating
tension
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
EP85904080A
Other languages
German (de)
French (fr)
Other versions
EP0245236B1 (en
Inventor
Ernst Felix
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.)
Zellweger Uster AG
Original Assignee
Zellweger Uster 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 Zellweger Uster AG filed Critical Zellweger Uster AG
Priority to AT85904080T priority Critical patent/ATE47435T1/en
Publication of EP0245236A1 publication Critical patent/EP0245236A1/en
Application granted granted Critical
Publication of EP0245236B1 publication Critical patent/EP0245236B1/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/40—Applications of tension indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • warp tension regulators The measurement of the warp tension on weaving machines and the like is an essential factor for keeping them constant by means of warp tension regulators.
  • a constant warp tension is essential for a perfect failure of the fabric. For this reason, methods and devices have always been used to measure this warp tension and to use the measured value to derive control variables with which organs can be controlled to influence the warp tension.
  • the most original way of measuring the chain tension and converting it into a measurement signal is to use the force exerted on a deflection element, which acts on the match tree, for example, of the entire chain.
  • the disadvantages of this measurement of the total warp tension are above all the large masses to be moved, which, however, only result in a relatively small deflection of the spring-loaded match tree.
  • Another disadvantage is that the total number of warp threads is used for force measurement, whereas differences in warp tension across the width of the warp thread family are not expressed.
  • the warp thread family - preferably partially - is set locally into resonance vibrations, either by bringing an auxiliary mass into connection with a part of the warp threads and this system being excited to vibrate, or be it that the warp threads alone are set in vibration.
  • the thread tension can be determined from the resulting resonance frequency and the known mass of the warp threads according to the principle of the vibrating string. This method solves the problem of zero point constancy.
  • the present invention now relates to a method for measuring the warp tension on the chain and / or on the fabric in textile machines and the like, which is characterized by the features listed in claim 1.
  • the invention also includes an apparatus for performing the method with the features according to claim 10.
  • Figure 1 is a first schematic representation of the measurement principle
  • FIG 2 shows the arrangement of vibrating member and thread family
  • Figure 3 schematically shows a vibrating element with associated drive means
  • Figure 4 schematically shows a vibrating element in relation to parts of the weaving machine - D -
  • Figure 5 is a representation of geometric relationships between the web and vibrating element
  • Figure 6 shows a further representation of geometric relationships
  • Figure 7 shows a variant of the vibrating organ
  • FIG. 8 Schematic of a vibrating element with sensor
  • Figure 9 shows a vibrating organ with self-excitation
  • Figure 10 shows a vibrating organ with a counterweight.
  • the chain 10 to be checked with regard to its tension or the fabric 11 is normally clamped between transport members, such as, for example, rear cylinder rollers 1, 2 and front cylinder rollers 3, 4.
  • a vibrating element 20 is attached between these clamping lines. This carries out a rotational oscillation around the axis.
  • the oscillating member 20 can rotate on its axis, on the one hand, and on the other hand, when the line is deflected, a restoring force arises which is proportional to the deflection and the tension.
  • the vibrating element 20 therefore forms a resonance system with the following resonance frequency in connection with the chain or the fabric:
  • Formula (1) which can be derived mathematically, shows that the voltage can be determined from the resonance frequency.
  • a vibrating element 20 In contact with the chain 10 or the fabric 11, a vibrating element 20 is rotatably mounted about a central axis 23. So that the web is always in contact with the vibrating element, the web is slightly deflected upwards. In other words, the material web (chain 10 or fabric 11) lies on the vibrating element 20 under the influence of the tension P.
  • the vibrating member 20 can also be designed as a rotatably mounted plate, the contact surface 24 with the web 10, 11 is advantageously treated as a wear-resistant surface (FIG. 3). This method is suitable e.g. in weaving and finishing.
  • parts of the processing machine can also be used for supporting the chain or the fabric, such as, for example, warp beam, match tree, breast beam of the weaving machine or pinch rollers, deflection rollers of the sizing machine, etc.
  • variable size a is several times larger than c, and thus the quotient - in relation (1) - only supplies one
  • FIG. 4 also shows a possible mounting of the vibrating element 20 by means of a cutting edge 27 and a notch 26 stamped into the vibrating element.
  • the material web 10, 11 holds the vibrating element 20 firmly on the cutting edge 27.
  • the vibrating organ should also have a significantly larger mass in relation to the goods. If the weft density is different in the fabric, the different fabric weight does not interfere.
  • the vibrating element 20 is now excited with its resonance frequency.
  • Methods for the excitation of mechanical vibrations are known. As a rule, these consist of a drive element, feedback element and amplifier.
  • an electromechanical excitation arrangement 30 according to FIGS. 2, 3 can deflect the vibrating element 20 about the axis 23 with the aid of an electromagnet.
  • Known inductive, capacitive, optical or pneumatic distance meters with subsequent amplifiers can be used as feedback means.
  • a drive coil 31 is required, as well as a feedback coil 32 with amplifier 33.
  • the frequency f of the vibrating element 20 which is established in this case is directly dependent on the tension P of the material web resting on the vibrating element 20, in accordance with the relationship of formula (1).
  • formula (1) only applies if the angle of deflection O around the oscillating plate is very small and the pivot point of the vibrating element lies completely against the goods (Fig. 5). Otherwise the swinging movement is no longer perpendicular to the goods plane. If the chain 10 or the fabric 11 adhere to the vibrating member by friction, changes in the length of the sections a and b and thus tensile forces of the chain or the fabric occur. There are therefore additional forces that are dependent on the size of the deflection, as a result of which Formula 1 is no longer valid and the force measurement is therefore no longer accurate.
  • the changes in length mentioned can also be eliminated if the pivot point of the vibrating element is no longer fixed but can be moved in the direction of the goods 10, 11.
  • Such an example is shown in Fig. 7.
  • the cutting edge bearing 26 is designed as a leaf spring 29, with which the pivot point of the vibrating member can be deflected. The apparent pivot point is then again at the desired intersection of the tensile forces.
  • the fulcrum can also be deliberately placed outside the intersection 14, as a result of which vibrations are excited by frictional forces (which are never exactly constant) when the chain 10 or fabric 11 is moving.
  • the frequency of this vibration is close to the resonance frequency.
  • the vibration system can be made to vibrate, by means of a sensor 34 and a transducer 35, the frequency fo which is established and the force P can be determined from this frequency.
  • the vibrating element 20 can have rotatably mounted rollers 21, 22, so that minimal friction between the chain or fabric and the vibrating element 20 occurs (FIG. 9). This method is preferably used in sizing and finishing.
  • Formula (1) also only applies exactly if the center of gravity of the oscillating structure lies in the pivot point, ie in the longitudinal axis 23 (FIG. 10).
  • a counterweight 25 can be attached to an axis of symmetry 28 laid by the oscillating member 20. If the center of gravity of the oscillating structure is not at the fulcrum, the system can oscillate as a pendulum even at zero force. However, the result is only slightly falsified if the resonance frequency of the entire system and the frequency of the oscillation of the empty pendulum are far apart. In addition, the frequency deviation is constant and predictable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Looms (AREA)

Abstract

Pour mesurer la tension d'une nappe d'ourdissage (10) ou d'une chaîne (11) dans un métier automatique ou similaire, un organe vibratoire (20) pivotable autour d'un axe (23) est agencé de telle façon dans la région de la nappe de tissu (nappe d'ourdissage 10 ou 11) qu'il est facile de dévier la nappe de tissu de la ligne droite. L'organe vibratoire (20) est mis en vibration par un agencement excitateur (30). La fréquence (fo) résultante de l'organe vibratoire (20) dépend directement de la tension P de la nappe d'ourdissage ou du tissu et peut ainsi être déduite de la fréquence fo. L'organe vibratoire (20) peut être amené, par simple glissement de la nappe d'ourdissage (10) ou du tissu (11) sur sa surface (24), à vibrer selon une vibration et une fréquence fo propres pouvant être mesurées par un senseur (34) et un convertisseur (35). On obtient une construction particulièrement avantageuse de l'organe vibratoire (20) en lui donnant la forme d'une plaque pourvue d'une encoche (26) posée sur une lame (27). Pour éliminer des vibrations propres de l'organe vibratoire (20), celui-ci peut être pourvu d'un contrepoids (25) qui transfère le centre de gravité du système au point d'intersection des efforts de traction exercés par la nappe d'ourdissage ou le tissu.To measure the tension of a warping web (10) or of a warp (11) in an automatic loom or the like, a vibratory member (20) pivotable about an axis (23) is arranged in such a way in the area of the fabric web (warping web 10 or 11) that it is easy to deflect the fabric web from the straight line. The vibratory member (20) is set into vibration by an exciting arrangement (30). The resulting frequency (fo) of the vibratory member (20) depends directly on the tension P of the warping sheet or of the fabric and can thus be deduced from the frequency fo. The vibratory member (20) can be caused, by simple sliding of the warping sheet (10) or of the fabric (11) on its surface (24), to vibrate according to a vibration and a frequency fo which can be measured by a sensor (34) and a converter (35). A particularly advantageous construction is obtained for the vibratory member (20) by giving it the form of a plate provided with a notch (26) placed on a blade (27). To eliminate the vibrations of the vibratory member (20), the latter can be provided with a counterweight (25) which transfers the center of gravity of the system to the point of intersection of the tensile forces exerted by the layer of warping or fabric.

Description

- i - - i -
Verfahren und Vorrichtung zur Messung der Kettspannung an Webmaschinen und dergleichenMethod and device for measuring warp tension on weaving machines and the like
Die Messung der Kettspannung an Webmaschinen und dergleichen bildet einen wesentlichen Faktor für deren Konstanthaltung mittels Kettspannungsreglern. Eine konstante Kettspannung ist für einen einwandfreien Ausfall des erzeugten Gewebes ausschlaggebend. Deshalb sind von jeher Verfahren und Vorrichtungen eingesetzt worden, um diese Kettspannung zu messen und um aus dem Messwert Regeigrössen abzuleiten, mit welchen Organe zur Beeinflussung der Kettspannung angesteuert werden können.The measurement of the warp tension on weaving machines and the like is an essential factor for keeping them constant by means of warp tension regulators. A constant warp tension is essential for a perfect failure of the fabric. For this reason, methods and devices have always been used to measure this warp tension and to use the measured value to derive control variables with which organs can be controlled to influence the warp tension.
Die ursprünglichste Art einer Messung der Kettspannung und deren Umsetzung in ein Messignal ist die Ausnützung der auf ein Umlenkorgan ausgeübten Kraft, die von der gesamten Kette beispielsweise auf den Streichbaum wirkt. Die Nachteile dieser Messung der gesamten Kettspannung sind vor allem die grossen zu bewegenden Massen, die aber nur eine relativ kleine Auslenkung des federnd gelagerten Streichbaums zur Folge haben. Ein weiterer Nachteil ist der, dass die Gesamtzahl der Kettfäden zur Kraftmessung herangezogen wird, dagegen Unterschiede in der Kettspannung über die Breite der Kettfadenschar nicht zum Ausdruck kommen.The most original way of measuring the chain tension and converting it into a measurement signal is to use the force exerted on a deflection element, which acts on the match tree, for example, of the entire chain. The disadvantages of this measurement of the total warp tension are above all the large masses to be moved, which, however, only result in a relatively small deflection of the spring-loaded match tree. Another disadvantage is that the total number of warp threads is used for force measurement, whereas differences in warp tension across the width of the warp thread family are not expressed.
Weiter sind Verfahren und Vorrichtungen vorgeschlagen worden, bei denen die Kettfadenschar zwischen zwei Auflagestellen mittels einer belasteten Rolle oder ähnlichlem ausgelenkt wird und die Grosse der Auslenkung ein Mass für die Kettspannung ergibt. Im Prinzip lassen sich solche Vorrichtungen über Teilbereiche der Kettfadenschar einsetzen; sie stellen aber in jedem Falle für die Webmaschine, insbesondere für deren Bedienung und Betrieb eine zusätzliche Behinderung dar. Allen erwähnten Verfahren haftet zudem die Problematik der sog. Nullpunktskonstanz an. In neuerer Zeit sind Verfahren und Vorrichtungen vorgeschlagen worden, die darauf beruhen, dass die Kettfadenschar - vorzugsweise partiell - örtlich in Resonanzschwingungen versetzt wird, sei es dadurch, dass eine Hilfsmasse mit einem Teil der Kettfäden in Verbindung gebracht und dieses System zu Schwingungen angeregt wird, oder sei es, dass die Kettfäden allein in Schwingung versetzt werden. In jedem Fall kann aus der resultierenden Resonanzfrequenz und der an sich bekannten Masse der Kettfäden nach dem Prinzip der schwingenden Saite die Fadenspannung bestimmt werden. Bei diesem Verfahren ist das Problem der Nullpunktskonstanz gelöst.Furthermore, methods and devices have been proposed in which the warp thread sheet is deflected between two support points by means of a loaded roller or the like and the size of the deflection gives a measure of the warp tension. In principle, such devices can be used over partial areas of the warp thread family; in any case, however, they represent an additional hindrance for the weaving machine, in particular for its operation and operation. All of the methods mentioned also have the problem of the so-called zero point constancy. More recently, methods and devices have been proposed which are based on the fact that the warp thread family - preferably partially - is set locally into resonance vibrations, either by bringing an auxiliary mass into connection with a part of the warp threads and this system being excited to vibrate, or be it that the warp threads alone are set in vibration. In any case, the thread tension can be determined from the resulting resonance frequency and the known mass of the warp threads according to the principle of the vibrating string. This method solves the problem of zero point constancy.
Aber auch diese Systeme sind nicht frei von Nachteilen; zumindestens ist es der Aufwand und damit die Kosten, die solche Schwingungssysteme erfordern. Bei Messungen im Gewebe ist mit unterschiedlicher Schussdichte zu rechnen, so dass dieses Verfahren versagt.But these systems are not free from disadvantages either; at least it is the effort and thus the costs that such vibration systems require. When measuring in the fabric, different weft densities are to be expected, so that this method fails.
Die vorliegende Erfindung betrifft nun ein Verfahren zur Messung der Kettspannung an der Kette und/oder am Gewebe in Textilmaschinen und dergleichen, das durch die in Anspruch 1 aufgeführten Merkmale charakterisiert ist.The present invention now relates to a method for measuring the warp tension on the chain and / or on the fabric in textile machines and the like, which is characterized by the features listed in claim 1.
Die Erfindung umfasst auch eine Vorrichtung zur Durchführung des Verfahrens mit den Merkmalen gemäss Anspruch 10.The invention also includes an apparatus for performing the method with the features according to claim 10.
Anhand der Beschreibung und der Figuren werden Ausführungsbeispiele derBased on the description and the figures, exemplary embodiments of the
Erfindung näher erläutert. Dabei zeigtInvention explained in more detail. It shows
Figur 1 eine erste schematische Darstellung des MessprinzipsFigure 1 is a first schematic representation of the measurement principle
Figur 2 die Anordnung von Schwingorgan und FadenscharFigure 2 shows the arrangement of vibrating member and thread family
Figur 3 schematisch ein Schwingorgan mit zugehörigen AntriebsmittelnFigure 3 schematically shows a vibrating element with associated drive means
Figur 4 schematisch ein Schwingorgan in Relation zu Teilen der Webmaschine - D - Figur 5 eine Darstellung geometrischer Verhältnisse zwischen Warenbahn und SchwingorganFigure 4 schematically shows a vibrating element in relation to parts of the weaving machine - D - Figure 5 is a representation of geometric relationships between the web and vibrating element
Figur 6 eine weitere Darstellung geometrischer VerhältnisseFigure 6 shows a further representation of geometric relationships
Figur 7 eine Variante des SchwingorgansFigure 7 shows a variant of the vibrating organ
Figur 8 Schematisch ein Schwingorgan mit SensorFigure 8 Schematic of a vibrating element with sensor
Figur 9 ein Schwingorgan mit EigenerregungFigure 9 shows a vibrating organ with self-excitation
Figur 10 ein Schwingorgan mit Gegengewicht.Figure 10 shows a vibrating organ with a counterweight.
In der schematisch gehaltenen Anordnung gemäss Fig. 1 ist im Normalfall die bezüglich ihrer Spannung zu prüfende Kette 10 bzw. das Gewebe 11 zwischen Transportorganen, wie beispielsweise hintere Zylinderwalzen 1, 2 und vordere Zylinderwalzen 3,4 eingespannt. Zwischen diesen Einspannlinien wird ein Schwingorgan 20 angebracht. Dieses führt eine Rotationsschwingαng um die Achse aus. Das Schwingorgan 20 kann nämlich einerseits um seine Achse rotieren, anderseits entsteht bei einer Auslenkung von der Geraden eine Rückstellkraft, die proportional zur Auslenkung und zur Spannung ist.1, the chain 10 to be checked with regard to its tension or the fabric 11 is normally clamped between transport members, such as, for example, rear cylinder rollers 1, 2 and front cylinder rollers 3, 4. A vibrating element 20 is attached between these clamping lines. This carries out a rotational oscillation around the axis. The oscillating member 20 can rotate on its axis, on the one hand, and on the other hand, when the line is deflected, a restoring force arises which is proportional to the deflection and the tension.
Das Schwingorgan 20 bildet also in Verbindung mit der Kette bzw. dem Gewebe ein Resonanzsystem mit folgender Resonanzfrequenz:The vibrating element 20 therefore forms a resonance system with the following resonance frequency in connection with the chain or the fabric:
rZ A Z r Z A Z
P ,(c + d + - + J- ) ω a bP, (c + d + - + J-) ω a b
(1)(1)
wobei CJ - Kreisfrequenz des Schwingorganswhere CJ - angular frequency of the vibrating organ
P = Spannung derKette bzw. des Gewebes mR = Rotationsträgheitsmoment des Schwingorgans a = Distanz Auflage links - Schwingorganachse 23 b = Distanz Schwingorganachse - Auflage rechts c, d = Abstände Schwingorganrollen bzw. -kanten - Achse 23.P = tension of the chain or fabric m R = rotational moment of inertia of the vibrating organ a = distance left support - vibrating organ axis 23 b = distance vibrating organ axis - right support c, d = distances between vibrating organ rollers or edges - axis 23.
Die Formel (1), die mathematisch hergeleitet werden kann, zeigt, dass aus der Resonanzfrequenz die Spannung bestimmt werden kann.Formula (1), which can be derived mathematically, shows that the voltage can be determined from the resonance frequency.
Nach der Erläuterung des Grundgedankens wird die schematische Konstruktion gemäss Fig. 2 erläutert. An die Kette 10 bzw. das Gewebe 11 anliegend ist ein Schwingorgan 20 um eine zentraleAchse 23 drehbar gelagert. Damit die Warenbahn stets am Schwingorgan anliegt, wird die Warenbahn leicht nach oben ausgelenkt. Anders ausgedrückt liegt die Warenbahn (Kette 10, bzw. Gewebe 11) unter dem Einfluss der Spannung P auf dem Schwingorgan 20 auf.After explaining the basic idea, the schematic construction according to FIG. 2 is explained. In contact with the chain 10 or the fabric 11, a vibrating element 20 is rotatably mounted about a central axis 23. So that the web is always in contact with the vibrating element, the web is slightly deflected upwards. In other words, the material web (chain 10 or fabric 11) lies on the vibrating element 20 under the influence of the tension P.
Das Schwingorgan 20 kann auch als drehbar gelagerte Platte ausgebildet sein, wobei die Berührungsfl che 24 mit der Warenbahn 10, 11 mit Vorteil als eine verschleissfeste Fläche behandelt ist (Fig. 3). Dieses Verfahren eignet sich z.B. in der Weberei und in der Ausrüstung.The vibrating member 20 can also be designed as a rotatably mounted plate, the contact surface 24 with the web 10, 11 is advantageously treated as a wear-resistant surface (FIG. 3). This method is suitable e.g. in weaving and finishing.
Anstelle der Zylinderwalzen können auch Teile der Verarbeitungsmaschine für die Auflage der Kette bzw. des Gewebes eingesetzt werden, wie beispiels¬ weise Kettbaum, Streichbaum, Brustbaum der Webmaschine oder Quetschwalzen, Umlenkwalzen der Schlichtemaschine u.s.w.Instead of the cylinder rollers, parts of the processing machine can also be used for supporting the chain or the fabric, such as, for example, warp beam, match tree, breast beam of the weaving machine or pinch rollers, deflection rollers of the sizing machine, etc.
Für den Fall, dass a »c und b »d sind, reduziert sich die Beziehung (1) zuIn the case that a »c and b» d, the relationship (1) is reduced to
OJ P (c + d) (2) m_ Diese Eigenschaft wird dann von spezieller Bedeutung, wenn das Schwingorgan 20 in der Maschine in einem Bereich eingesetzt wird, wo die Distanz zwischen Auflage und Schwingorgan veränderlich ist, z.B. bei radial federnd gelagerten Umlenkwalzen der Schlichtemaschine. Ein Spezialfall ist die Messung der Gewbespannung auf der Webmaschine. Der Brustbaum 12 (Fig. 4) ist dabei eine genau definierte Auflagefl che. Auf der anderen Seite des Schwingorgans bildet jedoch der Warenrand 13 einen scheinbaren Auflage- punkt, wenn das Webfach geöffnet ist. Die Distanz zwischen Schwingorgan und Warenrand ist zwar derart auch definiert.Wenn das Fach jedoch geschlos¬ sen ist, verlagert sich der Auflagepunkt ins Webgeschirr. Wenn die Ab¬ messungen des Schwingorgans imVerhältnis zum Abstand des Schwingorgans zum Warenrand, bzw. zum Webgeschirr klein sind, so wird der Einfluss dieser variablen Distanz vernachlässigbar.OJ P (c + d) (2) m_ This property is of particular importance when the vibrating element 20 is used in the machine in an area where the distance between the support and the vibrating element is variable, for example in the case of radially spring-mounted deflection rollers of the sizing machine. A special case is the measurement of the fabric tension on the weaving machine. The breast tree 12 (FIG. 4) is a precisely defined support surface. On the other side of the vibrating organ, however, the fabric edge 13 forms an apparent support point when the shed is open. The distance between the vibrating element and the edge of the goods is also defined in this way. However, when the compartment is closed, the point of contact moves into the weaving harness. If the dimensions of the vibrating member are small in relation to the distance of the vibrating member from the edge of the goods or from the weaving harness, the influence of this variable distance becomes negligible.
In diesem Falle ist die variable Grosse a um ein mehrfaches grösser als c, und somit liefert der Quotient - in der Beziehung (1) - nur einen ver-In this case, the variable size a is several times larger than c, and thus the quotient - in relation (1) - only supplies one
2 d2 nachlässigbar kleinen Beitrag im Summanden (c + d + — + * a b "2 d 2 negligible small contribution in the summand (c + d + - + * ab "
Figur 4 zeigt auch eine mögliche Lagerung des Schwingorgans 20 mittels einer Schneide 27 und einer in das Schwingorgan eingeprägten Kerbe 26. Die Warenbahn 10, 11 hält das Schwingorgan 20 auf der Schneide 27 fest.FIG. 4 also shows a possible mounting of the vibrating element 20 by means of a cutting edge 27 and a notch 26 stamped into the vibrating element. The material web 10, 11 holds the vibrating element 20 firmly on the cutting edge 27.
Das Schwingorgan soll im Verhältnis zur Ware auch eine wesentlich grössere Masse aufweisen. Bei unterschielicher Schussdichte im Gewebe stört dann das unterschiedliche Gewebegewicht nicht. Zur Messung der Spannung P der Kette 10 bzw. der Gewebebahn 11 wird nun das Schwingorgan 20 mit seiner Resonanzfrequenz angeregt. Verfahren zur Anregung von mechanischen Schwingungsgeb lden sind bekannt. In der Regel bestehen diese aus Antriebsglied, Rückkopplungselement und Verstärker. So kann z.B. eine gemäss Fig. 2, 3 elektromechanische Erregeranordnung 30 mit Hilfe eines Elektromagneten eine Auslenkung des Schwingorgans 20 um die Achse 23 bewirken. Als Rückkopplungsmittel können an sich bekannte induktiv, kapazitiv, optisch oder pneumatisch wirkende Abstandsmesser mit nachfolgenden Verstärkern eingesetzt werden. Zum Beispiel wird eine Antriebsspule 31 benötigt, sowie eine Rückkopplungsspule 32 mit Verstärker 33. Das Schwingorgan schwingt dadurch selbstätig mit der Resonanzfrequenz. Die sich dabei einstellende Frequenz f des Schwingorgans 20 ist direkt abhängig von der Spannung P der auf dem Schwingorgan 20 aufliegenden Warenbahn, gemäss der Beziehung von Formel (1).The vibrating organ should also have a significantly larger mass in relation to the goods. If the weft density is different in the fabric, the different fabric weight does not interfere. To measure the tension P of the chain 10 or the fabric web 11, the vibrating element 20 is now excited with its resonance frequency. Methods for the excitation of mechanical vibrations are known. As a rule, these consist of a drive element, feedback element and amplifier. For example, an electromechanical excitation arrangement 30 according to FIGS. 2, 3 can deflect the vibrating element 20 about the axis 23 with the aid of an electromagnet. Known inductive, capacitive, optical or pneumatic distance meters with subsequent amplifiers can be used as feedback means. For example, a drive coil 31 is required, as well as a feedback coil 32 with amplifier 33. As a result, the vibrating element vibrates automatically at the resonance frequency. The frequency f of the vibrating element 20 which is established in this case is directly dependent on the tension P of the material web resting on the vibrating element 20, in accordance with the relationship of formula (1).
- * - *
Die Formel (1) gilt aber nur, wenn der Umlenkwinkel O um die oszillierende Platte sehr klein ist und der Drehpunkt des Schwingorgans ganz an der Ware anliegt (Fig.5). Andernfalls ist die Schwingbewegung nicht mehr senkrecht zur Warenebene. Wenn die Kette 10 bzw. das Gewebe 11 durch Reibung am Schwingorgan haften, treten Längenänderung der Abschnitte a und b und somit Dehnkräfte der Kette bzw. des Gewebes auf. Es treten somit zusätzliche Kräfte auf, die von der Grosse der Auslenkung abhängig sind, wodurch Formel 1 nicht mehr gültig und somit die Kraftmessung nicht mehr genau ist.However, formula (1) only applies if the angle of deflection O around the oscillating plate is very small and the pivot point of the vibrating element lies completely against the goods (Fig. 5). Otherwise the swinging movement is no longer perpendicular to the goods plane. If the chain 10 or the fabric 11 adhere to the vibrating member by friction, changes in the length of the sections a and b and thus tensile forces of the chain or the fabric occur. There are therefore additional forces that are dependent on the size of the deflection, as a result of which Formula 1 is no longer valid and the force measurement is therefore no longer accurate.
Dieser Einfluss lässt sich eliminieren, wenn der Drehpunkt des oszillierenden Gebildes in den Schnittpunkt 14 der verlängert gedachten Richtungen der Zugkräfte der Kette 10 bzw. des Gewebes 11 gelegt wird. (Fig.6). Die Schwingungen sind dann genau senkrecht zur Warenebene, und es treten dadurch bei kleinen Schwingamplituden praktisch keine Längenänderungen der Ware auf. - r -This influence can be eliminated if the fulcrum of the oscillating structure is placed at the intersection 14 of the elongated directions of the tensile forces of the chain 10 or of the fabric 11. (Fig.6). The vibrations are then exactly perpendicular to the plane of the goods, and practically no changes in length of the goods occur with small vibration amplitudes. - r -
Die genannten Längenänderungen lassen sich auch eliminieren, wenn der Drehpunkt des Schwingorgans nicht mehr fest, sondern in Richtung der Ware 10, 11 beweglich ist. Ein solches Beispiel zeigt Fig.7. Das Schneidenlager 26 ist hiebei als Blatt-Feder 29 ausgebildet, womit der Drehpunkt des Schwingorgans ausgelenkt werden kann. Der scheinbare Drehpunkt liegt dann wiederum im gewünschten Schnittpunkt der Zugkräfte.The changes in length mentioned can also be eliminated if the pivot point of the vibrating element is no longer fixed but can be moved in the direction of the goods 10, 11. Such an example is shown in Fig. 7. The cutting edge bearing 26 is designed as a leaf spring 29, with which the pivot point of the vibrating member can be deflected. The apparent pivot point is then again at the desired intersection of the tensile forces.
Anderseits kann gemäss Fig.8 der Drehpunkt auch bewusst ausserhalb des Schnittpunktes 14 gelegt werden, wodurch bei bewegter Kette 10 bzw. Gewebe 11 Schwingungen durch Reibungskräfte (die nie genau konstant sind) angeregt werden. Die Frequenz dieser Schwingung liegt dabei in der Nähe der Resonanzfrequenz. Somit kann also ohne zusätzliches Erregersystem das Schwingsystem zum Schwingen gebracht, mittels eines Sensors 34 und eines Wandlers 35 die sich dabei einstellende Frequenz fo und aus dieser Frequenz die Kraft P bestimmt werden.On the other hand, according to FIG. 8, the fulcrum can also be deliberately placed outside the intersection 14, as a result of which vibrations are excited by frictional forces (which are never exactly constant) when the chain 10 or fabric 11 is moving. The frequency of this vibration is close to the resonance frequency. Thus, without an additional excitation system, the vibration system can be made to vibrate, by means of a sensor 34 and a transducer 35, the frequency fo which is established and the force P can be determined from this frequency.
Das Schwingorgan 20 kann drehbar gelagerte Rollen 21, 22 aufweisen, so dass minimale Reibung zwischen Kette bzw. Gewebe und Schwingorgan 20 auftritt (Fig.9). Dieses Verfahren findet vorzugsweise Anwendung in der Schlichterei und Ausrüstung.The vibrating element 20 can have rotatably mounted rollers 21, 22, so that minimal friction between the chain or fabric and the vibrating element 20 occurs (FIG. 9). This method is preferably used in sizing and finishing.
Formel (1) gilt auch nur genau, wenn der Schwerpunkt des oszillierenden Gebildes im Drehpunkt, d.h. in der Längsachse 23 liegt (Fig.10). Zur Verlagerung des Schwerpunktes des oszillierenden Gebildes, bestehend aus Schwingorgan 20 und gegebenenfalls mit diesen verbundenen Rollen 21, 22 in die Gegend des Drehpunktes kann ein Gegengewicht 25 auf einer durch das Schwingorgan 20 gelegt gedachten Symmetrieachse 28 angebracht werden. Liegt der Schwerpunkt des oszillierenden Gebildes nicht im Drehpunkt, so kann z.B. auch bei der Kraft Null das System als Pendel schwingen. Allerdings wird das Resultat nur wenig verfälscht, wenn die Resonanzfrequenz des gesamten Systems und die Frequenz der Schwingung des leeren Pendels weit auseinander liegen. Zudem ist die Frequenzabweichung konstant und berechenbar. Formula (1) also only applies exactly if the center of gravity of the oscillating structure lies in the pivot point, ie in the longitudinal axis 23 (FIG. 10). In order to shift the center of gravity of the oscillating structure, consisting of oscillating member 20 and, if necessary, rollers 21, 22 connected thereto, a counterweight 25 can be attached to an axis of symmetry 28 laid by the oscillating member 20. If the center of gravity of the oscillating structure is not at the fulcrum, the system can oscillate as a pendulum even at zero force. However, the result is only slightly falsified if the resonance frequency of the entire system and the frequency of the oscillation of the empty pendulum are far apart. In addition, the frequency deviation is constant and predictable.

Claims

Patentansprüche: Claims:
1. Verfahren zur Messung der Spannung einer Fadenschar oder eines Gewebes, dadurch gekennzeichnet, dass im Bereiche der bezüglich ihrer Spannung zu messenden Fadenschar (10) bzw. Gewebe (11) ein Schwingorgan (20) eingesetzt wird, über das die Fadenschar (10) bzw. das Gewebe (11) hinwegläuft, und dass aus der Resonanzfrequenz (f ) des Schwingorgans (20) die Spannung (P) der Fadenschar oder des Gewebes bestimmt wird.-1. A method for measuring the tension of a thread sheet or a fabric, characterized in that an oscillating member (20) is used in the area of the thread sheet (10) or fabric (11) to be measured with regard to its tension, via which the thread sheet (10) or the fabric (11) runs away, and that the tension (P) of the thread sheet or fabric is determined from the resonance frequency (f) of the vibrating organ (20).
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Schwingorgan (20) mittels einer rückgekoppelten elekt o-mechaπisehen Erregeranordnung (30) zu Schwingungen um seine Längsachse angeregt wird.2. The method according to claim 1, characterized in that the vibrating member (20) is excited to vibrate about its longitudinal axis by means of a feedback electro-mechanical excitation arrangement (30).
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Schwingorgan (20) unter dem Einfluss der darübergleitenden Warenbahn (Fadenschar (10) bzw. Gewebe (11) zu Vibrationen angeregt wird, welche Vibrationen mittels Sensor (34) und Wandler (35) in elektrische Signale mit einer Frequenz3. The method according to claim 1, characterized in that the vibrating member (20) under the influence of the material web (thread sheet (10) or fabric (11) is excited to vibrate, which vibrations by means of sensor (34) and transducer (35) into electrical signals with a frequency
(f ) umgewandelt werden.(f) are converted.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Fadenschar (10) bzw. das Gewebe (11) durch das Schwingorgan (20) aus der Geraden ausgelenkt wird.4. The method according to claim 1, characterized in that the thread sheet (10) or the fabric (11) is deflected by the vibrating member (20) from the straight line.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass 'der tatsächliche oder scheinbare Drehpunkt des Schwingorgans (20) mindestens angenähert in den Schnittpunkt (14) der ausgelenkten Zugkräfte der Warenbahn gelegt ist. 5. The method according to claim 4, characterized in that ' the actual or apparent pivot point of the vibrating member (20) is at least approximately in the intersection (14) of the deflected tensile forces of the web.
6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Fadenschar (10) bzw. das Gewebe (11) über Rollen (21, 22), die im Schwingorgan (20) gelagert sind, hinweggeführt wird.6. The method according to claim 1, characterized in that the thread sheet (10) or the fabric (11) over rollers (21, 22), which are mounted in the vibrating member (20), is passed.
7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Fadenschar (10) bzw. das Gewebe (11) über eine Fläche (24) des Schwingorgans (20) hinweggeführt wird.7. The method according to claim 1, characterized in that the thread sheet (10) or the fabric (11) over a surface (24) of the vibrating member (20) is guided.
8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Schwingorgan (20) mittels eines Gegengewichtes (25) ausbalanciert wird.8. The method according to claim 1, characterized in that the vibrating member (20) is balanced by means of a counterweight (25).
9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Rotationsmasse des Schwingorgans (20) gegenüber der entsprechenden Masse der Fadenschar (10) bzw. des Gewebes (11) gross gewählt wird.9. The method according to claim 1, characterized in that the rotational mass of the vibrating member (20) compared to the corresponding mass of the thread sheet (10) or the fabric (11) is chosen large.
10. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass ein Schwingorgan (20), das um eine zentrale Längsachse (23) drehbar gelagert ist, vorgesehen ist, dass die Fadenschar (10) bzw. das Gewebe (11) mit dem Schwingorgan (20) in Berührung steht, und dass das Schwingorgan (20) um die genannte Längsachse (23) in schwingende Bewegung versetzbar ist.10. The device for performing the method according to claim 1, characterized in that a vibrating member (20) which is rotatably mounted about a central longitudinal axis (23) is provided that the thread sheet (10) or the fabric (11) with is in contact with the vibrating member (20) and that the vibrating member (20) can be set into oscillating movement about the said longitudinal axis (23).
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Fadenschar (10) bzw. das Gewebe (11) durch das Schwingorgan (20) aus der Geraden ausgelenkt ist.11. The device according to claim 10, characterized in that the thread sheet (10) or the fabric (11) is deflected by the vibrating member (20) from the straight line.
12. Vorrichtung nach den Ansprüchen 10 und 11, dadurch gekennzeichnet, dass das Schwingorgan (20) drehbar gelagerte Rollen (21, 22) aufweist. 12. Device according to claims 10 and 11, characterized in that the vibrating member (20) has rotatably mounted rollers (21, 22).
13. Vorrichtung nach den Ansprüchen 10 und 11, dadurch gekennzeichnet, dass die Längsachse (23) des Schwingorgans (20) durch eine Kerbe (26) und eine Schneide (27) gebildet ist.13. Device according to claims 10 and 11, characterized in that the longitudinal axis (23) of the vibrating member (20) is formed by a notch (26) and a cutting edge (27).
14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass die Schneide (27) am Ende einer einseitig eingespannten Feder (29) angebracht ist.14. The apparatus according to claim 13, characterized in that the cutting edge (27) is attached to the end of a spring (29) clamped on one side.
15. Vorrichtung nach den Ansprüchen 10 und 11, dadurch gekennzeichnet, dass das Schwingorgan (20) eine der Fadenschar (10) bzw. dem Gewebe (11) zugekehrte, verschleissfeste Fläche (24) aufweist.15. Device according to claims 10 and 11, characterized in that the vibrating member (20) has a wear-resistant surface (24) facing the thread sheet (10) or the fabric (11).
16. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass das Schwingorgan (20) mittels eines Gegengewichtes (25) bezüglich der Längsachse (23) ausbalanciert ist.16. The apparatus according to claim 10, characterized in that the vibrating member (20) by means of a counterweight (25) is balanced with respect to the longitudinal axis (23).
17. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass das Schwingorgan (20) im Bereiche einer elektro-mechanischen Erregeranordnung (30) angeordnet ist.17. The apparatus according to claim 10, characterized in that the vibrating member (20) is arranged in the region of an electro-mechanical excitation arrangement (30).
18. Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, dass die elektro- mechanische Erregeranordnung (30) eine Schwingspule (31), eine Rückkopplungsspule (32) und einen Oszillator/Verstärker (33) aufweist.18. The apparatus according to claim 17, characterized in that the electro-mechanical excitation arrangement (30) has a voice coil (31), a feedback coil (32) and an oscillator / amplifier (33).
19. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass dem Schwingorgan (20) ein Sensor (34) mit Wandler (35) zugeordnet ist, der Vibrationen des durch die Fadenschar (10) bzw. das Gewebe (11) zu Eigenschwingungen angeregten Schwingorgans (20) in elektrische Signale umformt. 19. The device according to claim 10, characterized in that the vibrating member (20) is assigned a sensor (34) with transducer (35), the vibrations of the vibrating member (10) or the tissue (11) excited to natural vibrations ( 20) converted into electrical signals.
EP85904080A 1985-07-26 1985-08-27 Process and device for measuring the warp tension in automatic looms and similar Expired EP0245236B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85904080T ATE47435T1 (en) 1985-07-26 1985-08-27 METHOD AND DEVICE FOR MEASURING WARP TENSION ON LOOPPING MACHINES AND THE LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3255/85 1985-07-26
CH3255/85A CH668443A5 (en) 1985-07-26 1985-07-26 METHOD AND DEVICE FOR MEASURING THE TENSION OF A THREAD SHAFT OR A FABRIC ON A TEXTILE MACHINE.

Publications (2)

Publication Number Publication Date
EP0245236A1 true EP0245236A1 (en) 1987-11-19
EP0245236B1 EP0245236B1 (en) 1989-10-18

Family

ID=4252020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85904080A Expired EP0245236B1 (en) 1985-07-26 1985-08-27 Process and device for measuring the warp tension in automatic looms and similar

Country Status (6)

Country Link
US (1) US4794802A (en)
EP (1) EP0245236B1 (en)
JP (1) JPS63500472A (en)
CH (1) CH668443A5 (en)
DE (1) DE3573810D1 (en)
WO (1) WO1987000562A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905881C2 (en) * 1989-02-25 1999-08-19 Dornier Gmbh Lindauer Device for measuring warp tension in a weaving machine
WO1999045356A1 (en) * 1998-03-05 1999-09-10 Nord Klaus Juergen Method and device for monitoring the area of technical rolling bodies
US20030066362A1 (en) * 2001-08-29 2003-04-10 Lee Shih Yuan Seat belt tension sensor
CN104389090B (en) * 2014-11-14 2016-08-24 广东丰凯机械股份有限公司 Warp tension harvester
CN110186608B (en) * 2019-06-14 2024-07-05 江苏氢导智能装备有限公司 Pile packing steel band tension detection equipment and tension detection device thereof
CN110186607B (en) * 2019-06-14 2024-07-05 江苏氢导智能装备有限公司 Tension detection device and vibration trigger thereof
KR20230164731A (en) * 2021-04-05 2023-12-04 퍼듀 리서치 파운데이션 System and method for measuring tension distribution in a web in a roll-to-roll process

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923150A (en) * 1957-12-16 1960-02-02 American Viscose Corp Tension measuring apparatus
US3040565A (en) * 1960-01-07 1962-06-26 David A Church Film stress transducer
FR1407184A (en) * 1964-06-17 1965-07-30 Inst Textile De France Warp thread tension sensor on a loom
FR1540535A (en) * 1967-09-06 1968-09-27 Advanced thread breaker
BE768521R (en) * 1971-02-26 1971-11-03 Weefautomaten Picanol N V Meti CHAIN REMOVER FOR
SU391388A1 (en) * 1971-10-25 1973-07-25 Белорусский филиал Энергетического института Г. М. Кржижановского DEVICE FOR MEASUREMENT OF A LINEAR MASS OF MOVING GLASS
CH551922A (en) * 1972-11-21 1974-07-31 Loepfe Ag Geb DEVICE FOR MONITORING RUNNING FAEDS.
SU446781A1 (en) * 1973-03-22 1974-10-15 Предприятие П/Я А-3593 Device for measuring the tension of a magnetic tape
JPS5016585A (en) * 1973-06-09 1975-02-21
BE901112A (en) * 1984-11-22 1985-03-15 Ginderachter Marcel Van Pile yarn tension monitor for weaving loom - has V=shaped yarn loop on pressure sensitive detector between guides, signal can stop loom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8700562A1 *

Also Published As

Publication number Publication date
CH668443A5 (en) 1988-12-30
US4794802A (en) 1989-01-03
DE3573810D1 (en) 1989-11-23
JPS63500472A (en) 1988-02-18
EP0245236B1 (en) 1989-10-18
WO1987000562A1 (en) 1987-01-29

Similar Documents

Publication Publication Date Title
EP0829720B1 (en) Device for measuring the bending stiffness of a moving sheet
DE3823618A1 (en) METHOD AND DEVICE FOR DETERMINING THE MEASUREMENT OF AN OBJECT BY MEASURING THE SHIFT OF THE PERIOD OF A HARMONIOUS MOVEMENT
CH639486A5 (en) PIEZOELECTRIC SENSOR FOR GENERATING A SIGNAL DEPENDING ON THE TENSIONAL STRENGTH OF A TEXTILE THREAD.
CH463123A (en) Device for measuring the basis weight of a material
EP0245236B1 (en) Process and device for measuring the warp tension in automatic looms and similar
EP0100394B1 (en) Method and device for measuring the tension at textile webs on textile machines, especially mechanical looms
DE2813887C2 (en) Method and device for keeping constant the tension of a roving between the drafting system and the upper part of a leading-driven bobbin with a wing spindle of a roving machine
EP0467117A1 (en) Device for measuring the thickness and/or the unevenness of fleeces or laps in preparational spinning machines
EP0011724B1 (en) Method for direct determination of magnetostrictive constants and apparatus for applying it
DE2907904C2 (en) Method and device for measuring the quotient of tension and weight per unit area of a web-shaped material, in particular a paper web
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
DE19531858A1 (en) Aerial stay mechanical properties simple, low cost and clear diagnosis
DE3524106C2 (en)
DE4417132C2 (en) Resonant sensor and its use
EP0182960A2 (en) Device for the determination of the cross section of long straggling formed bodies at least by approximation
DE3900400A1 (en) DEVICE AND METHOD FOR WEIGHING OBJECTS DUE TO HARMONIC MOVEMENT
DE102011084434B4 (en) Method and device for measuring magnetic field gradients in magnetic force microscopy
DE10035833A1 (en) Device for changing the length of the path of an electromagnetic wave
DE2708417C2 (en) Device for measuring a transverse dimension of a longitudinally moving continuous material
EP1912768B1 (en) Cross cutter with a vibration damping means
DE69813965T2 (en) Scanning probe microscope
DE3105128A1 (en) CARTRIDGES FOR STRING INSTRUMENTS
CH680862A5 (en) Section warping machine - has appts., e.g. laser, for contactless measurement of roll thickness on the pressure area of a press roll pressing against the roll, etc.
DE29713328U1 (en) Traction measuring device
DE29923638U1 (en) Device for determining the thickness of a flat product

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

17P Request for examination filed

Effective date: 19870318

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB IT

17Q First examination report despatched

Effective date: 19890214

ITF It: translation for a ep patent filed

Owner name: FIAMMENGHI - DOMENIGHETTI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT

REF Corresponds to:

Ref document number: 47435

Country of ref document: AT

Date of ref document: 19891115

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3573810

Country of ref document: DE

Date of ref document: 19891123

ET Fr: translation filed
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
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930805

Year of fee payment: 9

Ref country code: AT

Payment date: 19930805

Year of fee payment: 9

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

Ref country code: GB

Payment date: 19930817

Year of fee payment: 9

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

Ref country code: DE

Payment date: 19930823

Year of fee payment: 9

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

Ref country code: BE

Payment date: 19930909

Year of fee payment: 9

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

Ref country code: GB

Effective date: 19940827

Ref country code: AT

Effective date: 19940827

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

Ref country code: BE

Effective date: 19940831

BERE Be: lapsed

Owner name: ZELLWEGER USTER A.G.

Effective date: 19940831

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940827

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

Ref country code: FR

Effective date: 19950428

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

Ref country code: DE

Effective date: 19950503

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST