EP1100742A1 - Messvorrichtung für fadenförmige prüfkörper - Google Patents
Messvorrichtung für fadenförmige prüfkörperInfo
- Publication number
- EP1100742A1 EP1100742A1 EP99930974A EP99930974A EP1100742A1 EP 1100742 A1 EP1100742 A1 EP 1100742A1 EP 99930974 A EP99930974 A EP 99930974A EP 99930974 A EP99930974 A EP 99930974A EP 1100742 A1 EP1100742 A1 EP 1100742A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring
- gap
- measuring device
- coating
- thread
- 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
Links
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 with a measuring gap with measuring zones for measuring properties on a moving thread-like test body, which 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 embedded in a gap in a plastic block so that together they form a measuring capacitor, the measuring field of which crosses the gap.
- the surface of this gap is thin Coated layer of a material whose electrical conductivity is lower than that of the electrodes. This is to ensure that locally occurring static charges, which arise from contact with the moving yarn, are distributed and broken down on this layer
- Measuring gaps in optically operating yarn measuring devices can be soiled by the yarn to be measured, which affects the optical measurement. This soiling can counteract a certain amount of self-cleaning by the moving yarn This is opposed to the fact that in the case of narrow measuring gaps an inadmissible wear of the side surfaces or the elements then installed is to be expected. However, this limits the freedom of design in the area of such measuring gaps and for yarn measuring devices in general
- the object to be achieved by the invention is then to increase the design options for devices for measuring filamentary test specimens, in particular when forming the measuring gap
- this is to be done by covering at least part of the measuring gap with a wear-resistant coating that is insensitive to wear from the moving yarn.
- This coating preferably covers electrodes, lenses or windows of optical devices that are embedded in the side walls of the measuring gap or parts thereof, as well as gaps or joints between the above-mentioned devices or electrodes and the other parts of the measuring gap.Coating is carried out by printing, immersing, steaming, sputtering or spotting the measuring gap with a material which preferably has a chemical connection with the surface of the parts mentioned in the gap received and applied in a layer thickness of, for example, 20-30 nm
- the advantages that can be achieved in this way can be seen in particular in 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, is reduced can 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 the optical elements that adjoin the measuring gap.
- Another advantage can then be seen that the effect of self-cleaning of the measuring gap can be better exploited a reduced gap width will occur. Soiling or deposits will be removed more safely by the test specimen itself. The narrower the measuring gap and the more likely it is that the test specimen or protruding parts will come into contact with the rare walls no guide if the position of the test specimen in the gap becomes meaningless
- a narrower gap also has the advantage that the flow of the shape, ie the fact that the cross-section of the test specimen is not circular but possibly oval, is significantly reduced when measuring the mass of the test specimen. 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
- FIG. 1 shows a measuring gap in a schematic representation
- Figure 2 shows a part of a measuring device with a measuring gap
- Figure 3 is a schematic representation of part of a 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 a simplified manner.
- Elements 6 and 7 of measuring devices are fastened to rare walls 4 and 5 of the gap 2 or into the side walls 4 , 5 embedded
- 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.
- a coating 8 here partially covers the side wall 4 with the Elements 6 and 7
- This coating can only be elements 6, 6 ', 7, 7' or only that Cover base 9 or the entire side wall 4 and 5 and possibly also base 9 of the gap 2 and consists of a wear-resistant material which 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 offers 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
- the coating can consist of a so-called sol, which forms a chemical compound with the material on the surface of the measuring gap.
- sol-gel technology Such brines are known from sol-gel technology
- the coating makes it possible, for example, to limit the width B of the gap 2 to a value which is 4 to 10 times the diameter of the test specimen 3. speaks or provide novel slit forms, as shown in the figures described below.
- FIG. 2 shows part of a measuring device with a coated measuring gap 10, which can be divided into an inlet part 11 and a measuring part 12.
- a test specimen 13 is located in the measuring part 12 for measuring.
- a further arrangement of an inlet part 11 ' can also be seen, which is not arranged in an axis with the measuring part 12 as usual, but opens out laterally.
- the coating according to the invention makes it possible to design the measuring part 12 with three-dimensionally curved side surfaces 17, which also act as a thread guide, as can be seen from FIG. 3.
- FIG. 3 shows a view of the measuring part 12 starting from a cutting surface, as indicated by the arrows A-A in FIG. 2.
- the end regions 14 and 15 and a middle region 16 can be seen, the middle region 16 having a larger cross section than the end regions 14, 15.
- the bottom i.e. that part of the gap which is designated 9 according to FIG. 1, no longer runs parallel to the test specimen and is not flat.
- the bottom is deeper in the middle of the gap than at the ends.
- Many other shapes are also conceivable for the measuring part 12.
- the area 16 can be provided with a layer for its better protection. If the gap 2 is continuous at its base, i.e. without discontinuities such as paragraphs, deposits are also continuously removed or taken along by the test material. This is particularly important for test specimens which, like game, consist of fibers.
Landscapes
- 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
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH161298 | 1998-07-31 | ||
CH161298 | 1998-07-31 | ||
PCT/CH1999/000340 WO2000007921A1 (de) | 1998-07-31 | 1999-07-23 | Messvorrichtung für fadenförmige prüfkörper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1100742A1 true EP1100742A1 (de) | 2001-05-23 |
EP1100742B1 EP1100742B1 (de) | 2003-04-23 |
Family
ID=4214513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99930974A Expired - Lifetime EP1100742B1 (de) | 1998-07-31 | 1999-07-23 | Messvorrichtung für fadenförmige prüfkörper |
Country Status (6)
Country | Link |
---|---|
US (1) | US6499345B1 (de) |
EP (1) | EP1100742B1 (de) |
JP (1) | JP2002522322A (de) |
CN (1) | CN1098799C (de) |
DE (1) | DE59905211D1 (de) |
WO (1) | WO2000007921A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19909703A1 (de) * | 1999-03-05 | 2000-09-07 | Schlafhorst & Co W | Vorrichtung zur optischen Garnüberwachung |
DE102004053735A1 (de) * | 2004-11-06 | 2006-05-11 | Saurer Gmbh & Co. Kg | Garnsensor |
CN101168874B (zh) * | 2006-10-27 | 2011-07-27 | 马国富 | 带测速的纱线信号检测装置 |
CH699070A1 (de) * | 2008-07-02 | 2010-01-15 | Uster Technologies Ag | Vorrichtung zur Erfassung von Parametern an einem fadenförmigen Prüfgut. |
CH700087A2 (de) * | 2008-12-05 | 2010-06-15 | Uster Technologies Ag | Gehäuse für einen garnreinigermesskopf. |
CN102442585A (zh) * | 2011-09-16 | 2012-05-09 | 江苏华宇机械有限公司 | 一种用于络筒并捻设备的检测装置 |
JP6857192B2 (ja) * | 2016-04-01 | 2021-04-14 | シュロニガー アーゲー | コンビネーションセンサ |
DE102018111648A1 (de) * | 2018-05-15 | 2019-11-21 | Saurer Spinning Solutions Gmbh & Co. Kg | Garnsensor zum optischen Erfassen eines in seiner Längsrichtung bewegten Garns |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US541529A (en) * | 1895-06-25 | genese | ||
NL6406359A (de) | 1964-06-05 | 1965-12-06 | ||
CH563021A5 (de) * | 1973-09-26 | 1975-06-13 | Zellweger Uster Ag | |
CH651528A5 (de) * | 1981-02-13 | 1985-09-30 | Peyer Siegfried | Fotoelektrische messeinrichtung fuer elektronische garnreiniger. |
CH661586A5 (de) * | 1983-10-04 | 1987-07-31 | Zellweger Uster Ag | Optisches messorgan fuer die querschnittsmessung textiler garne, sowie verwendung desselben. |
IT1179098B (it) * | 1984-09-06 | 1987-09-16 | Cselt Centro Studi Lab Telecom | Perfezionamenti alle apparecchiature a condensatore per la misura del diametro di fibre dielettriche |
JPH0273136A (ja) * | 1988-09-07 | 1990-03-13 | Akira Ito | 繊度測定装置 |
CH678172A5 (de) | 1989-06-07 | 1991-08-15 | Zellweger Uster Ag | |
DE4140952A1 (de) * | 1991-12-12 | 1993-06-17 | Rieter Ingolstadt Spinnerei | Verfahren und vorrichtung zur reinigung der sensorflaechen einer garnueberwachung |
CH683294A5 (de) * | 1992-01-31 | 1994-02-15 | Loepfe Ag Geb | Vorrichtung zur Detektion von Verunreinigungen, insbesondere Fremdfasern in einem langgestreckten, textilen Gebilde. |
CH684550A5 (de) * | 1992-10-01 | 1994-10-14 | Zellweger Uster Ag | Kapazitiver Sensor zur Erfassung von Masse- und/oder Durchmesserschwankungen von langgestrecktem textilem Prüfgut. |
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 (fr) * | 1992-12-07 | 1995-02-10 | Commissariat Energie Atomique | Procédé et dispositif de mesure sans contact de la tension et de la vitesse de défilement d'un fil. |
ATE189444T1 (de) * | 1995-09-06 | 2000-02-15 | Luwa Ag Zellweger | Garnsensor |
DE29519501U1 (de) * | 1995-12-08 | 1996-01-25 | Textechno Herbert Stein GmbH & Co KG, 41066 Mönchengladbach | Vorrichtung zum Prüfen von Einzelfasern |
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/zh not_active Expired - Fee Related
- 1999-07-23 DE DE59905211T patent/DE59905211D1/de not_active Expired - Lifetime
- 1999-07-23 WO PCT/CH1999/000340 patent/WO2000007921A1/de active IP Right Grant
- 1999-07-23 JP JP2000563559A patent/JP2002522322A/ja active Pending
- 1999-07-23 EP EP99930974A patent/EP1100742B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0007921A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1311752A (zh) | 2001-09-05 |
EP1100742B1 (de) | 2003-04-23 |
DE59905211D1 (de) | 2003-05-28 |
JP2002522322A (ja) | 2002-07-23 |
US6499345B1 (en) | 2002-12-31 |
CN1098799C (zh) | 2003-01-15 |
WO2000007921A1 (de) | 2000-02-17 |
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