EP1100742B1 - Measuring device for thread-like test samples - Google Patents
Measuring device for thread-like test samples Download PDFInfo
- Publication number
- EP1100742B1 EP1100742B1 EP99930974A EP99930974A EP1100742B1 EP 1100742 B1 EP1100742 B1 EP 1100742B1 EP 99930974 A EP99930974 A EP 99930974A EP 99930974 A EP99930974 A EP 99930974A EP 1100742 B1 EP1100742 B1 EP 1100742B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring
- measuring device
- coating
- gap
- slit
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
- B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
- B65H63/062—Electronic slub detector
- B65H63/065—Electronic slub detector using photo-electric sensing means, i.e. the defect signal is a variation of light energy
-
- 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
- the invention relates to a measuring device for a filiform test specimen, with a Measuring gap with measuring zones, for measuring properties on a moving test specimen, have the elements of a measuring device and are assigned to a measuring device.
- Such a measuring device for yarn is known for example from US-A-3,377,852.
- two electrodes are like this in a gap in a plastic block let in that these together form a measuring capacitor, the measuring field of which Gap crossed.
- the surface of this gap is made of a thin layer of one Material coated, whose electrical conductivity is lower than that of the electrodes is. This is to ensure that locally occurring static charges caused by touch arise with the moving yarn, spread over this layer and break down.
- a disadvantage of such a known measuring device is the fact that the dimensioning the conductivity of the thin layer is very difficult because it should be avoided that the layer causes the surface of the electrodes to expand.
- Measuring gaps in optically operating yarn measuring devices can be Yarn become dirty, which affects the optical measurement. This pollution can counteract a certain self-cleaning by the moving yarn. To pollution To be able to fight effectively through self-cleaning must favorable coordination of the dimensions of the measuring gap are taken into account. That stands contrary to that with narrow measuring gaps with an impermissible wear of the side surfaces or the elements built into it, but this limits the freedom of design generally in the area of such measuring gaps and in yarn measuring devices.
- the problem to be solved by the invention is now to find the possibilities in devices for measuring filiform test specimens, in particular in the Increase the formation of the measuring gap.
- This coating preferably covers electrodes, Lenses or windows of optical devices embedded in the side walls of the measuring gap are or parts thereof, as well as gaps or joints between the above Devices or electrodes and the remaining parts of the measuring gap.
- the coating is done by printing, immersing, steaming, sputtering or spraying the Measuring gap with a material, preferably with the surface of the parts mentioned a chemical bond is formed in the gap and a layer thickness of e.g. 20-30 nm remains applied.
- the advantages that can be achieved in this way can be seen in particular in the fact that the service life of the measuring gap can be increased.
- the measuring field ie the space in which the beam path of an optical system or the electrical field of a capacitive system extends, can be reduced. This can be achieved on the one hand by a reduced gap width and on the other hand by a smaller surface area of the electrodes or of the optical elements which adjoin the measuring gap.
- Another advantage is that the effect of self-cleaning the measuring gap can be better exploited. This can be done by reducing the gap width. Soiling or deposits are removed more safely by the test specimen itself. This effect is stronger the narrower the measuring gap and the more likely the test specimen or protruding parts thereof to touch the side walls.
- a narrower gap also has the advantage that the influence of the shape, ie the fact that the cross section of the test specimen is not circular but possibly oval, on the measurement of the mass of the test specimen is significantly reduced. This is because in a narrow gap, the yarn no longer appears as a flat body as in a very wide gap for the electrodes or the optical elements.
- the design of a measuring gap according to the invention also creates better conditions for installing an optical and a capacitive measuring system together in one measuring gap.
- part 1 of a measuring device with a measuring gap or gap 2 for a test specimen 3, here for example a yarn, is shown schematically and in simplified form.
- Elements 6 and 7 of measuring devices are fastened to side walls 4 and 5 of the gap 2 or embedded in the side walls 4, 5.
- These elements 6, 7 can be electrodes of a capacitively operating measuring system or windows, surfaces of prisms, lenses or other components of an optically operating measuring system.
- Corresponding elements 6 'and 7' can be found in the opposite side wall.
- the elements 6, 6 'and 7, 7' define on the side walls 4, 5 measuring zones of a measuring device known per se and therefore not shown here for measuring yarn properties such as mass, diameter, hairiness, color, foreign fiber content, etc.
- a coating 8 here partially covers the side wall 4 with the elements 6 and 7.
- This coating can only the elements 6, 6 ', 7, 7' or only the base 9 or the entire side wall 4 and 5 and possibly also the base 9 of the gap 2 cover and consists of an abrasion-resistant material that is preferably transparent for optical measuring systems or conductive for capacitive measuring systems.
- the coating preferably has glass-like properties, ie it is transparent, hard and smooth, so that it presents little resistance to the test piece when touched.
- the coating can be obtained, for example, by an inorganic material synthesis and form a so-called nanocomposite, with which, for example, a glass-like, scratch-resistant but not brittle or brittle surface can be created.
- the coating can be applied by immersing part 1 in the material of the coating or by spraying it on.
- the coating can consist of a so-called sol, which forms a chemical connection with the material on the surface of the measuring gap.
- sol Such brines are known from sol-gel technology.
- the coating makes it possible, for example, to reduce the width B of the gap 2 to one Limit value that corresponds to 4 to 10 times the diameter of the test specimen 3 or to provide novel slit forms, such as the figures described below demonstrate.
- FIG. 2 shows part of a measuring device with a coated measuring gap 10, the can be divided into an inlet part 11 and a measuring part 12. Located for measuring there is a test specimen 13 in the measuring part 12. Another arrangement of an inlet part can also be seen 11 ', which is not arranged as usual in one axis with the measuring part 12, but opens out laterally. Both inlet parts 11 and 11 'shield due to their narrow cross section the measuring part 12 against extraneous light, which is advantageous in optical measuring systems is. This is more the case with the inlet part 11 '.
- the coating according to the invention also makes it possible to measure the measuring part 12 with three dimensions form curved side surfaces 17, which also act as thread guides, such as this can be seen from FIG. 3.
- FIG. 3 shows a view of the measuring part 12 starting from a cut surface as shown in FIG 2 is indicated by the arrows A-A.
- the bottom is in the middle of the gap deeper than at the ends. So it is possible, for example, only the end areas 14, 15 to be provided with a layer 17, 18 according to the invention, so that this function can take a tour of the test material. With that are many other forms conceivable for the measuring part 12.
- the area 16 may be better Protection with a layer. If the gap 2 is continuous at its base, i.e. without discontinuities such as paragraphs, deposits become continuous removed or taken along by the test material. This is particularly the case with test specimens important, which consist of fibers like yarns.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Quality & Reliability (AREA)
- Treatment Of Fiber Materials (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
Die Erfindung betrifft eine Messvorrichtung für einen fadenförmigen Prüfkörper, mit einem Messspalt mit Messzonen, zur Messung von Eigenschaften an einem bewegten Prüfkörper, die Elemente einer Messeinrichtung aufweisen und einer Messvorrichtung zugeordnet sind.The invention relates to a measuring device for a filiform test specimen, with a Measuring gap with measuring zones, for measuring properties on a moving test specimen, have the elements of a measuring device and are assigned to a measuring device.
Eine solche Messvorrichtung ist für Garn beispielsweise aus der US-A-3,377,852 bekannt. Bei dieser Messvorrichtung sind zwei Elektroden in einem Spalt in einem Kunststoffblock so eingelassen, dass diese zusammen einen Messkondensator bilden, dessen Messfeld den Spalt überquert. Die Oberfläche dieses Spaltes ist mit einer dünnen Schicht aus einem Material überzogen, dessen elektrische Leitfähigkeit geringer als diejenige der Elektroden ist. Damit soll erreicht werden, dass lokal auftretende statische Aufladungen, die durch Berührung mit dem bewegten Garn entstehen, sich auf dieser Schicht verteilen und abbauen.Such a measuring device for yarn is known for example from US-A-3,377,852. In this measuring device, two electrodes are like this in a gap in a plastic block let in that these together form a measuring capacitor, the measuring field of which Gap crossed. The surface of this gap is made of a thin layer of one Material coated, whose electrical conductivity is lower than that of the electrodes is. This is to ensure that locally occurring static charges caused by touch arise with the moving yarn, spread over this layer and break down.
Ein Nachteil einer solchen bekannten Messvorrichtung ist darin zu sehen, dass die Bemessung der Leitfähigkeit der dünnen Schicht sehr schwierig ist, da vermieden werden soll, dass die Schicht eine Ausdehnung der Fläche der Elektroden bewirkt. Ausserdem ist diese Schicht nur sinnvoll, wenn das zu messende Garn statisch aufgeladen ist und die Seitenwände des Spaltes oft berührt oder berühren könnte. Zudem kann sich diese Schicht abnützen, was auch bedeutet, dass die elektrischen Eigenschaften des Spaltes sich dann wieder verändern.A disadvantage of such a known measuring device is the fact that the dimensioning the conductivity of the thin layer is very difficult because it should be avoided that the layer causes the surface of the electrodes to expand. In addition, this is Layer only makes sense if the yarn to be measured is statically charged and the side walls of the gap often touched or could touch. This layer can also wear out, which also means that the electrical properties of the gap then change change again.
Es ist weiter bekannt, dass es auch optisch arbeitende Vorrichtungen zur Messung von Garn gibt, die ebenfalls einen Spalt für das Garn bilden. Über diesen Spalt erstreckt Sich der Strahlengang einer Optik, die in die Seitenwände des Spaltes mündet.It is also known that there are also optically operating devices for measuring There are yarn that also form a gap for the yarn. This gap extends the beam path of an optic that opens into the side walls of the gap.
Eine solche Vorrichtung ist aus der EP 0 401 600 bekannt. Diese weist aber zusätzliche Kondensatorplatten auf, mit denen das Garn kapazitiv abgetastet werden kann. Diese Kondensatorplatten können dabei als Schicht ausgebildet sein, die Streuscheiben eines optischen Systems überziehen.Such a device is known from EP 0 401 600. But this shows additional Capacitor plates with which the yarn can be capacitively scanned. These capacitor plates can be formed as a layer, the lenses of an optical Systems overdraw.
Messspalte in optisch arbeitenden Garnmessvorrichtungen können durch das zu messende Garn verschmutzt werden, was die optische Messung beeinträchtigt. Dieser Verschmutzung kann eine gewisse Selbstreinigung durch das bewegte Garn entgegenwirken. Um die Verschmutzung durch die Selbstreinigung wirksam bekämpfen zu können, muss auf eine günstige Abstimmung der Abmessungen des Messspaltes geachtet werden. Dem steht entgegen, dass bei engen Messspalten mit einer unzulässigen Abnützung der Seitenflächen oder der darin eingebauten Elemente zu rechnen ist Dies aber schränkt die Gestaltungsfreiheit im Bereiche solcher Messspalte und bei Garnmesseinrichtungen allgemein ein. Measuring gaps in optically operating yarn measuring devices can be Yarn become dirty, which affects the optical measurement. This pollution can counteract a certain self-cleaning by the moving yarn. To pollution To be able to fight effectively through self-cleaning must favorable coordination of the dimensions of the measuring gap are taken into account. That stands contrary to that with narrow measuring gaps with an impermissible wear of the side surfaces or the elements built into it, but this limits the freedom of design generally in the area of such measuring gaps and in yarn measuring devices.
Die durch die Erfindung zu lösende Aufgabe besteht nun darin, die Gestaitungsmöglichkeiten bei Vorrichtungen zur Messung von fadenförmigen Prüfkörpern insbesondere bei der Ausbildung des Messspaltes zu erhöhen.The problem to be solved by the invention is now to find the possibilities in devices for measuring filiform test specimens, in particular in the Increase the formation of the measuring gap.
Dies soll erfindungsgemäss dadurch geschehen, dass mindestens ein Teil des Messspaltes mit einer abriebfesten Beschichtung überdeckt wird, die gegen Abnützung durch das bewegte Garn unempfindlich ist. Diese Beschichtung überdeckt vorzugsweise Elektroden, Linsen oder Fenster optischer Einrichtungen, die in die Seitenwände des Messspaltes eingelassen sind oder Teile davon, sowie Zwischenräume oder Fugen zwischen den genannten Einrichtungen oder Elektroden und den übrigen Teilen des Messspaltes. Die Beschichtung erfolgt durch Bedrucken, Eintauchen, Bedampfen, Besputtern oder Bespritzen des Messspaltes mit einem Werkstoff, der vorzugsweise mit der Oberfläche der genannten Teile im Spalt eine chemische Verbindung eingeht und in einer Schichtdicke von z.B. 20 - 30 nm aufgetragen bleibt.According to the invention, this should be done in that at least part of the measuring gap is covered with an abrasion-resistant coating that protects against wear from the moving Yarn is insensitive. This coating preferably covers electrodes, Lenses or windows of optical devices embedded in the side walls of the measuring gap are or parts thereof, as well as gaps or joints between the above Devices or electrodes and the remaining parts of the measuring gap. The coating is done by printing, immersing, steaming, sputtering or spraying the Measuring gap with a material, preferably with the surface of the parts mentioned a chemical bond is formed in the gap and a layer thickness of e.g. 20-30 nm remains applied.
Die dadurch erreichbaren Vorteile sind insbesondere darin zu sehen, dass die Lebensdauer
des Messspaltes erhöht werden kann. Ein weiterer Vorteil besteht darin, dass das Messfeld,
also der Raum in dem sich der Strahlengang eines optischen Systems oder das elektrische
Feld eines kapazitiven Systems erstreckt, verkleinert werden kann. Dies kann einerseits
durch eine verringerte Spaltbreite und andererseits durch eine kleinere Oberfläche der
Elektroden oder der optischen Elemente, die an den Messspalt angrenzen erreicht werden.
Ein weiterer Vorteil ist darin zu sehen, dass der Effekt der Selbstreinigung des Messspaltes
besser ausgenützt werden kann. Das kann durch eine verringerte Spaltbreite geschehen.
Dabei werden Verschmutzungen oder Ablagerungen sicherer durch den Prüfkörper selbst
entfernt. Diese Wirkung ist umso stärker je enger der Messspalt ist und je wahrscheinlicher
eine Berührung des Prüfkörpers oder abstehender Teile davon mit den Seitenwänden ist.
Oder, es ist möglich auf eine Seitenführung zu verzichten, wenn die Position des Prüfkörpers
im Spalt bedeutungslos wird.
Ein engerer Spalt hat auch den Vorteil, dass der Einfluss der Form, d.h. der Umstand, dass
der Querschnitt des Prüfkörpers nicht kreisrund sondern möglicherweise oval ist, auf die
Messung der Masse des Prüfkörpers wesentlich verringert wird. Dies deshalb, weil in einem
engen Spalt, das Garn nicht mehr wie in einem sehr breiten Spalt für die Elektroden oder
die optischen Elemente als flacher Körper erscheint.
Durch die erfindungsgemässe Ausbildung eines Messspaltes sind auch bessere Bedingungen
geschaffen, um ein optisches und ein kapazitives Messsystem zusammen in einem
Messspalt einzubauen. The advantages that can be achieved in this way can be seen in particular in the fact that the service life of the measuring gap can be increased. Another advantage is that the measuring field, ie the space in which the beam path of an optical system or the electrical field of a capacitive system extends, can be reduced. This can be achieved on the one hand by a reduced gap width and on the other hand by a smaller surface area of the electrodes or of the optical elements which adjoin the measuring gap. Another advantage is that the effect of self-cleaning the measuring gap can be better exploited. This can be done by reducing the gap width. Soiling or deposits are removed more safely by the test specimen itself. This effect is stronger the narrower the measuring gap and the more likely the test specimen or protruding parts thereof to touch the side walls. Or, it is possible to dispense with lateral guidance if the position of the test specimen in the gap becomes meaningless.
A narrower gap also has the advantage that the influence of the shape, ie the fact that the cross section of the test specimen is not circular but possibly oval, on the measurement of the mass of the test specimen is significantly reduced. This is because in a narrow gap, the yarn no longer appears as a flat body as in a very wide gap for the electrodes or the optical elements.
The design of a measuring gap according to the invention also creates better conditions for installing an optical and a capacitive measuring system together in one measuring gap.
Im folgenden wird die Erfindung anhand eines Beispiels und mit bezug auf die beiliegenden Figuren näher erläutert. Es zeigen:
- Figur 1
- einen Messspalt in schematischer Darstellung,
Figur 2- einen Teil einer Messvorrichtung mit einem Messspalt und
Figur 3- eine schematische Darstellung eines Teils eines Messspaltes.
- Figure 1
- a measuring gap in a schematic representation,
- Figure 2
- part of a measuring device with a measuring gap and
- Figure 3
- a schematic representation of part of a measuring gap.
In der Figur ist ein Teil 1 einer Messvorrichtung mit einem Messspalt oder Spalt 2 für einen
Prüfkörper 3, hier beispielsweise ein Garn, schematisch und vereinfacht dargestellt. An
Seitenwänden 4 und 5 des Spaltes 2 sind Elemente 6 und 7 von Messeinrichtungen befestigt
oder in die Seitenwände 4, 5 eingelassen. Diese Elemente 6, 7 können Elektroden
eines kapazitiv arbeitenden Messsystems oder Fenster, Flächen von Prismen, Linsen oder
anderer Bestandteile eines optisch arbeitenden Messsystems sein. Entsprechende Elemente
6' und 7' sind in der gegenüberliegenden Seitenwand zu finden. Die Elemente 6, 6' bzw.
7, 7' definieren an den Seitenwänden 4, 5 Messzonen einer an sich bekannten und deshalb
hier nicht näher dargestellten Messvorrichtung zur Messung von Garneigenschaften wie
Masse, Durchmesser, Haarigkeit, Farbe, Fremdfasergehalt usw. Eine Beschichtung 8 überdeckt
hier teilweise die Seitenwand 4 mit den Elementen 6 und 7. Diese Beschichtung kann
nur die Elemente 6, 6', 7, 7' oder nur den Grund 9 oder auch die ganze Seitenwand 4 und 5
und eventuell auch den Grund 9 des Spaltes 2 überdecken und besteht aus einem abriebfesten
Material, das vorzugsweise durchsichtig für optische Messsysteme oder leitfähig für
kapazitive Messsysteme ist. Vorzugsweise hat die Beschichtung glasähnliche Eigenschaften,
d.h. sie ist durchsichtig, hart und glatt, so dass sie dem Prüfkörper bei einer Berührung
wenig Widerstand entgegensetzt.
Die Beschichtung kann beispielsweise durch eine anorganische Werkstoffsynthese gewonnen
werden und ein sogenanntes Nanokomposit bilden, mit dem beispielsweise eine
glasähnliche, kratzfeste aber nicht brüchige oder spröde Oberfläche geschaffen werden
kann. Das Aufbringen der Beschichtung kann durch Eintauchen des Teils 1 in den Werkstoff
der Beschichtung oder durch Aufsprühen desselben erfolgen. Die Beschichtung kann
aus einem sogenannten Sol bestehen, das mit dem Material an der Oberfläche des Messspaltes
eine chemische Verbindung eingeht. Solche Sole sind aus der Sol-Gel-Technologie
bekannt.In the figure, part 1 of a measuring device with a measuring gap or
The coating can be obtained, for example, by an inorganic material synthesis and form a so-called nanocomposite, with which, for example, a glass-like, scratch-resistant but not brittle or brittle surface can be created. The coating can be applied by immersing part 1 in the material of the coating or by spraying it on. The coating can consist of a so-called sol, which forms a chemical connection with the material on the surface of the measuring gap. Such brines are known from sol-gel technology.
Durch die Beschichtung wird es beispielsweise möglich, die Breite B des Spaltes 2 auf einen
Wert zu beschränken, der dem 4 bis 10 fachen Durchmesser des Prüfkörpers 3 entspricht
oder neuartige Spaltformen vorzusehen, wie dies die nachfolgend beschriebenen Figuren
zeigen.The coating makes it possible, for example, to reduce the width B of the
Fig. 2 zeigt einen Teil einer Messvorrichtung mit einem beschichteten Messspalt 10, der
sich in einen Einlaufteil 11 und einen Messteil 12 unterteilen lässt. Zum Messen befindet
sich ein Prüfkörper 13 im Messteil 12. Man erkennt auch eine weitere Anordung eines Einlaufteiles
11', der nicht wie üblich in einer Achse mit dem Messteil 12 angeordnet ist, sondern
seitlich ausmündet. Beide Einlaufteile 11 und 11' schirmen durch ihren engen Querschnitt
den Messteil 12 gegen Fremdlicht ab, was bei optischen Messsystemen vorteilhaft
ist. Beim Einlaufteil 11' ist dies in stärkerem Masse der Fall.FIG. 2 shows part of a measuring device with a coated
Durch die erfindungsgemässe Beschichtung ist es möglich den Messteil 12 auch mit dreidimensional
gewölbten Seitenflächen 17 auszubilden, die auch als Fadenführer wirken, wie
dies aus der Fig. 3 ersichtlich ist.The coating according to the invention also makes it possible to measure the measuring
Fig. 3 zeigt eine Ansicht des Messteiles 12 ausgehend von einer Schnittfläche, wie sie in
der Fig. 2 durch die Pfeile A-A angegeben ist. Man erkennt dabei die Endbereiche 14 und
15 sowie einen mittleren Bereich 16, wobei der mittlere Bereich 16 einen grösseren Querschnitt
aufweist als die Endbereiche 14, 15. Das bedeutet hier auch, dass der Grund, d.h.
jener Teil des Spaltes der gemäss Fig. 1 mit 9 bezeichnet ist, nicht mehr parallel zum Prüfkörper
verläuft und nicht eben ist. In der gezeigten Ausführung ist der Grund in der Mitte
des Spaltes tiefer als an den Enden. So ist es beispielsweise möglich, nur die Endbereiche
14, 15 mit einer erfindungsgemässen Schicht 17, 18 zu versehen, so dass diese die Funktion
einer Führung für das Prüfgut übernehmen können. Damit sind auch viele andere Formen
für den Messteil 12 denkbar. Trotzdem kann der Bereich 16 zu seinem besseren
Schutz mit einer Schicht versehen sein. Wird der Spalt 2 an seinem Grund kontinierlich, d.h.
ohne Unstetigkeiten wie Absätzen ausgebildet, so werden Ablagerungen auch kontinuierlich
entfernt oder durch das Prüfgut mitgenommen. Dies ist besonders bei Prüfkörpern
wichtig, die wie Garne aus Fasern bestehen.FIG. 3 shows a view of the measuring
Claims (9)
- A measuring device for thread-type test pieces having a measuring slit (2) with measuring zones (6, 7), for measuring the characteristics of a moving test piece, which comprise elements of a measuring system are associated with a measuring device, characterised by a coating (8) of an abrasion-resistant material, which is insensitive to wear by the moving test piece and covers the measuring zone in the measuring slit at least in part.
- A measuring device according to claim 1, characterised in that the coating consists of material exhibiting glass-like characteristics.
- A measuring device according to claim 1, characterised in that the coating is formed by a nano-composite obtained from inorganic material synthesis.
- A measuring device according to claim 1, characterised in that the coating exhibits a thickness of 20-30 nm.
- A measuring device according to claim 1, characterised in that the measuring slit with the coating exhibits a width (B) which corresponds to 4 to 10 times the diameter of the test piece.
- A measuring device according to claim 1, characterised in that the coated measuring slit comprises an inlet part (11) and a measuring part (12).
- A measuring device according to claim 6, characterised in that the inlet part comprises a narrower cross section than the measuring part (12).
- A measuring device according to claim 6, characterised in that the measuring part comprises three-dimensionally curved side faces (17).
- A process for producing a measuring device according to claim 1, characterised in that a coating is applied at least to parts of the measuring slit with elements of a measuring system, wherein the coating enters into chemical combination with the material at the surface of the measuring slit.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH161298 | 1998-07-31 | ||
CH161298 | 1998-07-31 | ||
PCT/CH1999/000340 WO2000007921A1 (en) | 1998-07-31 | 1999-07-23 | Measuring device for thread-like test samples |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1100742A1 EP1100742A1 (en) | 2001-05-23 |
EP1100742B1 true EP1100742B1 (en) | 2003-04-23 |
Family
ID=4214513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99930974A Expired - Lifetime EP1100742B1 (en) | 1998-07-31 | 1999-07-23 | Measuring device for thread-like test samples |
Country Status (6)
Country | Link |
---|---|
US (1) | US6499345B1 (en) |
EP (1) | EP1100742B1 (en) |
JP (1) | JP2002522322A (en) |
CN (1) | CN1098799C (en) |
DE (1) | DE59905211D1 (en) |
WO (1) | WO2000007921A1 (en) |
Cited By (2)
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DE102004053735A1 (en) * | 2004-11-06 | 2006-05-11 | Saurer Gmbh & Co. Kg | yarn sensor |
DE102018111648A1 (en) * | 2018-05-15 | 2019-11-21 | Saurer Spinning Solutions Gmbh & Co. Kg | Yarn sensor for optically detecting a yarn moved in its longitudinal direction |
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DE19909703A1 (en) * | 1999-03-05 | 2000-09-07 | Schlafhorst & Co W | Optical yarn monitoring device |
CN101168874B (en) * | 2006-10-27 | 2011-07-27 | 马国富 | Yarn signal detection device with speed measuring function |
CH699070A1 (en) * | 2008-07-02 | 2010-01-15 | Uster Technologies Ag | A device for detecting the parameters of a filamentary test material. |
CH700087A2 (en) * | 2008-12-05 | 2010-06-15 | Uster Technologies Ag | Housing for a garnreinigermesskopf. |
CN102442585A (en) * | 2011-09-16 | 2012-05-09 | 江苏华宇机械有限公司 | Detecting device for spooling and cabling equipment |
JP6857192B2 (en) * | 2016-04-01 | 2021-04-14 | シュロニガー アーゲー | Combination sensor |
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US541529A (en) * | 1895-06-25 | genese | ||
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CH563021A5 (en) * | 1973-09-26 | 1975-06-13 | Zellweger Uster Ag | |
CH651528A5 (en) * | 1981-02-13 | 1985-09-30 | Peyer Siegfried | PHOTOELECTRICAL MEASURING DEVICE FOR ELECTRONIC THREAD CLEANERS. |
CH661586A5 (en) * | 1983-10-04 | 1987-07-31 | Zellweger Uster Ag | OPTICAL MEASURING INSTRUMENT FOR THE CROSS-SECTION MEASUREMENT OF TEXTILE YARN AND THE USE THEREOF. |
IT1179098B (en) * | 1984-09-06 | 1987-09-16 | Cselt Centro Studi Lab Telecom | IMPROVEMENTS IN CONDENSER EQUIPMENT FOR MEASURING THE DIAMETER OF DIELECTRIC FIBERS |
JPH0273136A (en) * | 1988-09-07 | 1990-03-13 | Akira Ito | Fineness measuring instrument |
CH678172A5 (en) * | 1989-06-07 | 1991-08-15 | Zellweger Uster Ag | |
DE4140952A1 (en) * | 1991-12-12 | 1993-06-17 | Rieter Ingolstadt Spinnerei | METHOD AND DEVICE FOR CLEANING THE SENSOR SURFACES OF A YARN MONITORING |
CH683294A5 (en) * | 1992-01-31 | 1994-02-15 | Loepfe Ag Geb | Device for the detection of impurities, in particular foreign fibers in an elongated, textile structure. |
CH684550A5 (en) * | 1992-10-01 | 1994-10-14 | Zellweger Uster Ag | A capacitive sensor for the detection of mass and / or variations in diameter of elongated textile test material. |
GB9222082D0 (en) * | 1992-10-21 | 1992-12-02 | Davy Mckee Poole | A radiation pyrometer assembly for sensing the temperature of an elongate body moving longitudinally |
FR2698962B1 (en) * | 1992-12-07 | 1995-02-10 | Commissariat Energie Atomique | Method and device for non-contact measurement of the tension and the running speed of a wire. |
DE59604359D1 (en) * | 1995-09-06 | 2000-03-09 | Luwa Ag Zellweger | Yarn sensor |
DE29519501U1 (en) * | 1995-12-08 | 1996-01-25 | Textechno Herbert Stein GmbH & Co KG, 41066 Mönchengladbach | Device for testing single fibers |
US5926267A (en) * | 1997-06-11 | 1999-07-20 | Zellweger Luwa Ag | Process and device for detecting extraneous substances and extraneous fibers in a fibrous composite |
-
1999
- 1999-07-23 US US09/744,915 patent/US6499345B1/en not_active Expired - Fee Related
- 1999-07-23 CN CN99809068A patent/CN1098799C/en not_active Expired - Fee Related
- 1999-07-23 JP JP2000563559A patent/JP2002522322A/en active Pending
- 1999-07-23 EP EP99930974A patent/EP1100742B1/en not_active Expired - Lifetime
- 1999-07-23 DE DE59905211T patent/DE59905211D1/en not_active Expired - Lifetime
- 1999-07-23 WO PCT/CH1999/000340 patent/WO2000007921A1/en active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004053735A1 (en) * | 2004-11-06 | 2006-05-11 | Saurer Gmbh & Co. Kg | yarn sensor |
US7324201B2 (en) | 2004-11-06 | 2008-01-29 | Oerlikon Textile Gmbh & Co. Kg | Yarn sensor |
DE102018111648A1 (en) * | 2018-05-15 | 2019-11-21 | Saurer Spinning Solutions Gmbh & Co. Kg | Yarn sensor for optically detecting a yarn moved in its longitudinal direction |
Also Published As
Publication number | Publication date |
---|---|
WO2000007921A1 (en) | 2000-02-17 |
CN1311752A (en) | 2001-09-05 |
CN1098799C (en) | 2003-01-15 |
EP1100742A1 (en) | 2001-05-23 |
US6499345B1 (en) | 2002-12-31 |
JP2002522322A (en) | 2002-07-23 |
DE59905211D1 (en) | 2003-05-28 |
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