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WO2008154756A9 - Dispositif et procédé permettant le contrôle de matières textiles en mouvement - Google Patents

Dispositif et procédé permettant le contrôle de matières textiles en mouvement Download PDF

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Publication number
WO2008154756A9
WO2008154756A9 PCT/CH2008/000241 CH2008000241W WO2008154756A9 WO 2008154756 A9 WO2008154756 A9 WO 2008154756A9 CH 2008000241 W CH2008000241 W CH 2008000241W WO 2008154756 A9 WO2008154756 A9 WO 2008154756A9
Authority
WO
WIPO (PCT)
Prior art keywords
texture
elevations
textile material
component
optical
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.)
Ceased
Application number
PCT/CH2008/000241
Other languages
German (de)
English (en)
Other versions
WO2008154756A1 (fr
Inventor
Rafael Storz
Hansruedi Wampfler
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.)
Uster Technologies AG
Original Assignee
Uster Technologies 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 Uster Technologies AG filed Critical Uster Technologies AG
Priority to CN2008900000669U priority Critical patent/CN201808967U/zh
Publication of WO2008154756A1 publication Critical patent/WO2008154756A1/fr
Anticipated expiration legal-status Critical
Publication of WO2008154756A9 publication Critical patent/WO2008154756A9/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G01N21/8915—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined non-woven textile material
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/26—Damages to handling machine
    • B65H2601/261—Clogging
    • B65H2601/2612—Pollution
    • 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 present invention is in the field of textile material testing. It relates to a device and a method for testing a moving textile material, according to the preambles of the independent claims.
  • the invention can be used, for example, in optical yarn cleaners on spinning or winding machines.
  • the contamination problem has a particularly strong effect on optical textile testing devices, because even a slight contamination of the optical
  • optical surface can strongly influence the light used for detection by means of absorption and / or scattering.
  • An "optical surface” is understood here to mean a surface of an optical component which interacts with the light used, that is, for example, the light is transmitted or reflected.
  • US Pat. No. 5,163,201 A discloses a method and a device for cleaning the measuring space of a probe head of a thread monitoring device. The cleaning process is carried out when there is no yarn in the probe.
  • the cleaning device includes a brush whose cleaning activity can be further assisted by a blowing nozzle for blowing clean air and a suction nozzle for dirt extraction.
  • the cleaning operations have business interruptions and lead to a poor efficiency of the textile machine.
  • optical surfaces are increasingly scratched by the numerous cleaning processes, whereby the light transmission is permanently reduced ("blindness" of the optics.) Too severely scratched optical components must be replaced and have a correspondingly low life, resulting in replacement costs and leads to a further reduction the degree of utilization of the textile machine.
  • the CH-597'079 A5 proposes to design an optical thread monitor so that the thread makes contact with a light-transmitting cover of the light transmitter and the light receiver.
  • the thread makes a circular motion during the spinning process and slides so over the cover that he frees them from the dirt.
  • the friction between thread and cover leads to a scratching of the surface of the cover, in particular by the action of the harder dirt components after a relatively short time, which leads to the disadvantages described above.
  • a yarn monitoring device is arranged in the traversing region of the yarn.
  • the device has a U-shaped measuring gap with two opposite the yarn run inclined sensor surfaces. It works on itself contactless, but at the reversal points of the Fadenchangierang each yarn touched briefly one of the two sensor surfaces, whereby the sensor surfaces are cleaned. Also, the sensor surfaces of this device are scratched over time.
  • WO-00/07921 A1 describes a measuring device for yarn.
  • the device has a thin measuring gap through which the yarn moves along its longitudinal direction. On both sides of the measurement gap, lying opposite each other, are
  • the measuring elements may be electrodes of a capacitive measuring system or window of an optical measuring system.
  • the walls of the measuring gap including the measuring elements are covered with an abrasion-resistant coating, for example a nanocomposite or a sol. This increases the service life of the measuring gap.
  • the self-cleaning of the measuring gap is better exploited by the narrowing of the measuring gap can be made so that the yarn touches the walls of the measuring gap and transported away dirt deposits, without damaging the measuring gap. However, even such a coating is subject to wear over time.
  • EP-1'035'059 A2 discloses a device for optical yarn monitoring.
  • the surfaces of the optical components are provided with a translucent coating, which reduces the deposition of dirt deposits and reduces the wear of the surface due to mechanical action.
  • Suitable materials for such a coating include a ceramic material and Teflon® .
  • the application of such coatings to optical surfaces is technically complicated and expensive.
  • protective glasses or protective films are arranged in an optical diameter measuring device between the measuring object and the measuring optics. These can be easily cleaned or replaced.
  • the protective glasses or protective films can also be assigned a cleaning bath.
  • this optical diameter meter has a considerable footprint and requires a lot of effort for the mechanical devices and the implementation of the cleaning functions, which leads to high costs.
  • a nanotextured surface has a texture whose typical structure sizes are in the nanometer range, ie from about 1 to 100 nm.
  • An overview of nanotechnology and nanostructuring can be found, for example: For example, the "scientia halensis - Scientific Journal of the Martin-Luther-University Halle-Wittenberg", issue 2/2004. PRESENTATION OF THE INVENTION
  • the textile test should be less affected by dirt deposits and thus more reliable.
  • the tendency to fouling is to be reduced by essential for the measurement surfaces of the inventive device and a gentle cleaning of the surfaces are facilitated.
  • the invention is based on the recognition that a suitable texture of the surfaces of components can counteract contamination thereof.
  • Textture in this document refers to the structural nature of a surface.
  • the textured surface always includes height variations, ie elevations and / or depressions, the height of which, however, is always very small in comparison to the longitudinal and transverse dimensions of the surface. Whether such height variations are perceived as elevations from the surface plane, as depressions in the surface plane or as adjacent elevations and depressions is often a question of intuition and should play no role in the following description of the invention.
  • the device according to the invention for testing a moving textile material includes a passage region through which the textile material is movable, and a component which has a surface facing the textile material.
  • the surface has a texture with elevations and / or depressions, which counteracts contamination of the surface.
  • the textile material is attached to a component which is a surface facing the textile material has moved past.
  • the surface is provided with a texture with elevations and / or depressions, which counteracts contamination of the surface.
  • a first preferred embodiment of the device according to the invention is based on a "slipstream effect." If the textile material to be tested is always guided past the component in the same direction, the dirt deposit always takes place from the same direction Intercept incoming dirt particles and prevent soiling of other, lying in the lee of the surveys zones of the surface.Thus, the surveys act as “shields", which specifically capture dirt and keep other areas of dirt free.
  • a second preferred embodiment of the device according to the invention is based on the "lotus effect" ®
  • the lotus effect ® is understood to mean the low wettability of a surface, which is achieved by a special structure of the surface (ie texture) Wells, wherein the distance between the elevations in the range of 1 nm to lmm, preferably from 0.1 to 200 microns, and the height of the elevations in the range of 1 nm to 1 mm, preferably from 0.1 to 100 microns, is located.
  • the surface texture can be based on nanotechnology.
  • a nanotextured surface has a texture whose typical structure sizes are in the nanometer range, ie from about 1 to 100 nm.
  • the nanoparticles should be aligned as subunits in a functional system.
  • the nanotextured surface can, for. Example, a very thin functional layer and / or contain particularly small particles or be structured in the range of nanometers.
  • the invention has a variety of applications in textile material testing. It can be used in laboratory testing (offline) or during testing during the production process (online). It is suitable for various measuring principles such. As the optical or the capacitive measuring principle, with their advantages come in the extremely polluting optical measuring principle to best advantage. TITLE OF DRAWINGS
  • FIG. 1 shows in a perspective view an optical yarn cleaner, as it is known from WO-93/13407 Al.
  • FIG. 2 shows in a perspective view a textured surface as it can be used in the device according to the invention.
  • FIG. 3 shows a perspective detailed view of a region of the textured surface which is designated III in FIG.
  • FIG. 4 shows a side view of a region of the textured surface which is shown in FIG.
  • FIG. 3 is designated by IY.
  • Figure 5 shows another erfmdungsgemässe execution form a textured
  • FIG. 1 shows an example of an optical yarn cleaner 1 in a perspective view
  • Such a yarn cleaner 1 is described in WO-93/13407 Al.
  • the yarn cleaner 1 has a housing 2 which has a measuring gap 3 for the passage of a yarn 4 or another thread-like structure.
  • the yarn 4 is moved along its longitudinal direction, which is indicated by an arrow 40, and is guided by not shown guide means so that it can not escape substantially transversely to its longitudinal direction.
  • a source part 5 of the housing 2 is a light source 7, for example, a light emitting diode (LED).
  • a first light feeder 8 splits light from the light source 7 into two bundles and throws it over two entrance prisms 9, 9 '.
  • the yarn 4 reflects the light reflected by an exit surface 100 into a first exit prism 10 and is fed via the first exit prism 10 and a second light feeder 12 to a first light sensor 14.
  • the terms "entry” and “exit” refer to the yarn 4.
  • a sensor part 6 of the housing 2 there is a second exit prism 11 and a third light supply 13, which supply the light transmitted through the yarn 4 to a second light sensor 15.
  • the measuring gap 3 is located between the source part 5 and the sensor part 6 of the housing 2.
  • the light feeders 8, 12, 13 act as light guides and are z. B. as injection molded parts made of a translucent for the light plastic or as internally mirrored cavities.
  • FIG. 2 shows, in a very schematic perspective illustration, a surface 100 in a device 1 according to the invention, for example the optical exit surface of the first exit prism 10 in the optical device 1 of FIG. 1.
  • the surface 100 which faces the yarn 4 and is therefore particularly susceptible to contamination , has a texture.
  • the texture is designed and oriented to reduce or prevent contamination of at least portions of the surface 100.
  • the texture may cover the entire surface 100 or only part or all of it.
  • the texture in this example consists of a substantially one-dimensional grid.
  • the grating is invariable.
  • the grid is periodic and is composed alternately of wedge-shaped or sawtooth-shaped elements 101 and flat elements 102 together.
  • the wedge-shaped elements 101 protrude as elevations from the surface plane xy, in which the flat elements 102 lie out.
  • the grating period p can be between 1 ⁇ m and 1 mm, for example between 5 ⁇ m and 50 ⁇ m around xind preferably about 10 microns.
  • the wedge-shaped elements 101 and the flat elements 102 may, but need not, have the same extent in the longitudinal direction x.
  • the wedge angle ⁇ can be between 10 ° and 80 °, for example between 15 ° and 45 ° and preferably about 30 °. This results in typical wedge heights h between approximately 0.7 and 25 ⁇ m; In general, wedge heights between 0.1 .mu.m and 1 mm come into question.
  • any dirt particles 41 emitted by the yarn 4 also have a velocity component in the same direction + x. It follows that the dirt particles 41 always deposit from the same direction -x.
  • the wedge-shaped elements 101 are now aligned so that they act as "protective shields" against the dirt particles 41. On the inclined surfaces of the wedge-shaped elements 101 and possibly on parts of the flat elements 102, therefore, dirt deposits 42 and thus contaminated zones 103 arise
  • the texture of the surface 100 shown by way of example in FIGS. 2-4 is only one of many possible textures.
  • the texture may contain elevations which have a rectangular, sinusoidal (wavy) and / or other shaped profile in longitudinal section (in the longitudinal direction x).
  • Flat elements 102 do not necessarily have to be present. The shape choice and the
  • Dimensioning of the texture depends on parameters such as material of the component 10, width of the measuring gap 3, distance of the yarn 3 from the surface 100, speed of the yarn 4, size, material and state of aggregation of the most frequently expected Dirt particles 41 etc. from.
  • All textures are in accordance with the present invention in common that they have elevations 101 and / or depressions 102, which are so designed and / or aligned that dirt 41 does not adhere or only in certain zones 103 liable where it does not bother. With knowledge of the invention, the skilled person will be able to design a texture suitable for a given application.
  • FIG. 5 schematically shows an embodiment of a surface 100 with an aperiodic texture.
  • the lines indicate wedge-shaped (or otherwise shaped) elements, as explained with reference to FIGS. 3 and 4.
  • the extent of a typical wedge-shaped element is less than the entire width of the surface 100.
  • the wedge-shaped elements may be different in length from each other. They need not necessarily, as drawn in Figure 5, be aligned parallel to each other, yes, not even necessarily straight, but may be curved. They can be stochastically distributed over the surface.
  • a textured in such a manner (not graphically illustrated here) surface 100 has ® due to the lotus effect self-cleaning properties. Even liquids with low surface tension practically do not wet the surface 100, but form drops which do not adhere to the surface 100.
  • the surface has 100 peaks and valleys, with the distance between the elevations ranging from 1 nm to 1 mm and the height of the elevations ranging from 1 nm to 1 mm. It can be a nanotextured surface.
  • many different materials are possible.
  • the surface 100 may be made of the same material as the component 10 that defines it, typically an optical glass or plastic suitable for optical applications.
  • the surface 100 may consist of a coating that is applied to the component 10.
  • Such a coating may in turn consist of a single layer or of several layers.
  • the coating should be scratch-resistant, have dirt-repellent properties, and / or counteract electrostatic charging. Materials that at least partially meet these requirements, such as ceramic materials or hydrophobic polymers such. As polytetrafluoroethylene (PTFE, Teflon ® ).
  • the textured surface 100 for the inventive device 1 can be produced simultaneously with the component 10, for example by injection molding in a suitably textured form. Alternatively, the texture can be created later, z. B. by subsequent embossing, etching or coating. Corresponding microstructuring methods are known.
  • a cleaning can z.
  • Cleaning fluid a blowing out with a gas and / or a mechanical cleaning with a brush, a cloth or the like include.
  • contaminated zones 103 may become clean again or the self-cleaning of surface 100 may be supported.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Quality & Reliability (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

La présente invention a pour objet un dispositif servant à contrôler une matière textile en mouvement (4). Une surface (100) d'un composant optique (10), orientée vers la matière textile (4), présente une texture dotée d'élévations (101) et/ou de creux (102), qui agit contre la salissure de la surface (100). Les élévations (101) peuvent par exemple intercepter des particules d'impuretés (41) en suspension et se dirigeant vers elles, et empêcher ainsi que d'autres zones (104) situées dans leur sillage soient salies. Cela permet de réduire la vulnérabilité de la surface (100) aux salissures, ce qui engendre un contrôle plus fiable du textile.
PCT/CH2008/000241 2007-06-19 2008-05-27 Dispositif et procédé permettant le contrôle de matières textiles en mouvement Ceased WO2008154756A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008900000669U CN201808967U (zh) 2007-06-19 2008-05-27 检测移动纺织材料的装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9842007 2007-06-19
CH984/07 2007-06-19

Publications (2)

Publication Number Publication Date
WO2008154756A1 WO2008154756A1 (fr) 2008-12-24
WO2008154756A9 true WO2008154756A9 (fr) 2010-12-23

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PCT/CH2008/000241 Ceased WO2008154756A1 (fr) 2007-06-19 2008-05-27 Dispositif et procédé permettant le contrôle de matières textiles en mouvement

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CN (1) CN201808967U (fr)
WO (1) WO2008154756A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2651802B1 (fr) * 2010-12-13 2015-02-25 Uster Technologies AG Procédé de diagnostic pour un dispositif de mesure de produits textiles
JP5982875B2 (ja) * 2012-02-29 2016-08-31 富士ゼロックス株式会社 光量検出装置及び画像形成装置
JP2022098906A (ja) * 2020-12-22 2022-07-04 村田機械株式会社 糸監視装置及び糸巻取機
DE102022002576A1 (de) * 2022-07-14 2024-01-25 Oerlikon Textile Gmbh & Co. Kg Galette zum Fördern, Transportieren und / oder Strecken eines Fadens
CN118913979B (zh) * 2024-10-11 2025-01-24 天津云瑞地毯股份有限公司 一种地毯质量检测设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683293A5 (de) * 1991-12-20 1994-02-15 Peyer Ag Siegfried Fremdfasererkennung in Garnen.
EP1055924A3 (fr) * 1999-05-26 2001-10-31 Siemens Aktiengesellschaft Structure des surfaces de fenêtres des appareils de mesure optiques

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Publication number Publication date
WO2008154756A1 (fr) 2008-12-24
CN201808967U (zh) 2011-04-27

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