WO2024251963A1 - Procédé de mesure in situ pour effectuer une évaluation objective de l'ennoblissement de textiles, et éléments et dispositifs associés - Google Patents

Procédé de mesure in situ pour effectuer une évaluation objective de l'ennoblissement de textiles, et éléments et dispositifs associés Download PDF

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Publication number
WO2024251963A1
WO2024251963A1 PCT/EP2024/065764 EP2024065764W WO2024251963A1 WO 2024251963 A1 WO2024251963 A1 WO 2024251963A1 EP 2024065764 W EP2024065764 W EP 2024065764W WO 2024251963 A1 WO2024251963 A1 WO 2024251963A1
Authority
WO
WIPO (PCT)
Prior art keywords
textile web
textile
contact
sensor
acoustic
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/EP2024/065764
Other languages
German (de)
English (en)
Inventor
Ulrich Seuthe
Jörg Schmäschke
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.)
Matchpoint Textilmaschinenbau GmbH
QASS GmbH
Original Assignee
Matchpoint Textilmaschinenbau GmbH
QASS GmbH
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 Matchpoint Textilmaschinenbau GmbH, QASS GmbH filed Critical Matchpoint Textilmaschinenbau GmbH
Publication of WO2024251963A1 publication Critical patent/WO2024251963A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/367—Fabric or woven textiles

Definitions

  • the invention relates to an element for exciting and recording acoustic vibrations of a textile web, a device for attachment to a textile web processing station, a textile processing station and an in-situ measuring method for objectively assessing the surface finishing of textiles according to the preamble of claims 1, 7, 8 and 9 respectively.
  • Textiles are mechanically processed during production in order to make them feel pleasant on the skin of living beings or to enable the textile to perform a technical function.
  • Mechanical processing is carried out using abrasives (silicon carbide, diamond and similar materials).
  • the fiber material in the textile fabric is opened in a targeted manner so that a desired change in the surface takes place.
  • the technical parameters depend on the starting material, the technique and technology used.
  • the surface processing of textiles is very versatile in its application and very variable in its design and functional results based on the base material and the product to be produced. Examples of different products and desired results are:
  • the surface treatment is assessed according to the current state of the art, purely based on the experience of the people responsible, and is mainly carried out by haptic testing.
  • the haptic perception is determined by the human factor. Employees feel the condition randomly by laying their hands on the surface.
  • the process is highly subjective and depends on environmental conditions such as temperature and humidity.
  • the invention is based on the object of creating an element for exciting and recording acoustic vibrations of a textile web, a device for attachment to a textile web processing station, a textile processing station and an in-situ measuring method for objectively assessing the surface finishing of textiles according to the preamble of claims 1, 7, 8 and 9, respectively, with which the quality of the textile web can be detected in-situ.
  • acoustic, in particular piezoelectric, sensors are applied via a carrier material in the form of an element according to claim 1 after the textile has been processed in textile processing machines.
  • the carrier material serves as a type of pickup that runs over the surface of the textile like a comb and detects the roughness of a textile through specific friction.
  • the decisive factor here is the exposed fibers after processing depending on the physical variables such as stiffness, temperature, humidity and number/contact area. For an entire system, the measured variables temperature and humidity are also measured.
  • the resulting vibrations can be subjected to a known multidimensional evaluation.
  • the invention provides an element for exciting and recording acoustic vibrations of a textile web during its production, comprising a preferably elongated body with a suitably curved contact surface for contacting the textile web under tension and an acoustic (structure-borne sound) sensor for recording the acoustic vibrations.
  • This element which is preferably made partially or completely from plastic, in particular polyoxymethylene (POM plastic), is placed against the textile web under a suitably adjustable or controllable force while it is being moved between rollers. If necessary, the element is made partially or completely from metal or ceramic or another material or comprises such a material.
  • a temperature sensor, a humidity sensor and/or a contact force sensor are also provided on the element or on a textile processing station. This allows all relevant parameters to be recorded and evaluated.
  • the acoustic sensor is preferably a piezoelectric sound sensor for detecting structure-borne sound on the body. Vibrations from the contact area between the material and the body are transmitted there by the arrangement of the sensor on the body.
  • the sensor can cover a frequency range between 100 Hz (or e.g. 20 kHz) and 400 kHz. A larger frequency range of up to several MHz can also be provided. Lower frequencies can also contain usable information depending on the system and processing parameters. Depending on the material speed in m/s and the material properties (e.g.
  • material - synthetic fiber natural fiber, fiber thickness, fiber density; type of fabric; knot density; material stiffness; material roughness; size of the yarn loops; woven or applied material elements; how many and which fibers extend from the material surface; surface treatment; material doubling, etc.) as well as the properties of the body and the contact surface, different frequency ranges, including low-frequency and high-frequency ranges, contain relevant information.
  • a frequency range starting well below 20kHz in particular from 0Hz, 100Hz, 500Hz, 1 kHz, 2kHz, 3kHz, 5kHz, 10kHz, 15kHz up to a frequency range well above 400kHz, approximately 500kHz, 1 MHz, 2MHz, 5Mhz, 10MHz, 50MHz, 100MHz, 200MHz, 300MHz, 500 MHz or more is appropriate depending on the application situation.
  • the acoustic sensor is embedded in the body in such a way that it records its vibrations. The sound excited by the friction is then not recorded from the material web or the environment, but from the body.
  • the acoustic sensor is set back from the contact surface towards the interior of the body and/or without breaking through the contact surface, or flush with the contact surface, or coupled to the outside of the body.
  • the contact surface of the body creates a connection with the material web.
  • the contact surface must be designed in such a way that it can scan a relevant area of the material.
  • the structure of the material including e.g. yarn or yarn loops or knots or protruding material parts or woven or applied additional material elements or the like, is ideally elastically deformed, deflected and/or stretched by the contact and ideally returns to its original shape after the contact, e.g. the material elements straighten up again (partially or completely) after the contact.
  • the structure-borne sound generated by this provides information about the material web in the vicinity of the contact surface.
  • the body can be flat, pointed, hemispherical or the like, for example, or have contact elements such as tips, cylinders, pyramids, comb fingers, holes, depressions, recesses and/or the like, also in combination.
  • the body is particularly advantageously elongated in order to scan a larger part of the material web or the entire width of the material web.
  • the body is preferably considerably longer than it is wide, e.g. 40 to 100cm long and 2 to 6cm in diameter.
  • the body can also be rounded across its length.
  • a semi-circular or round rod is suitable.
  • the body can also have a sharp edge, e.g. a (triangular) cross-section, or be partly rounded, partly pointed or shaped in some other way.
  • the contact surface transverse to the longitudinal extension of the body can be curved in a semicircular or oval shape, and/or the body can be designed, in particular semi-cylindrical, with a fastening means on the long side facing away from the curved surface, such as a tongue for a groove or with screw devices. This makes it technically easy to implement a detachable fastening.
  • the invention further provides a device for attachment to a textile web processing station, comprising an elongated holder and an element fastened to the holder or several, at least two or at least three, elements fastened to the holder adjacent to one another in the longitudinal direction for exciting and recording acoustic vibrations of a textile web, wherein the holder is preferably adjustable transversely to the longitudinal direction of the device for at least two, three, four or more different contact voltages to the textile web, if necessary continuously.
  • the device according to the invention can be easily retrofitted to an existing textile processing station, for example, using two brackets or similar fastening elements on the end of the holder. If several elements, in particular three or more, are provided, the tension that varies across the width of the textile web can be taken into account. It is particularly advantageous to be able to adjust the holder and thus all elements in the direction of the textile web in order to change the contact force; if necessary, the elements can be adjusted individually or in groups in the direction of the textile web.
  • the invention further provides a textile processing station comprising at least two rollers for a textile web, e.g. deflection, processing or winding rollers, and preferably textile processing elements, in particular on one or more rollers in the form of abrasives or the like, wherein a device according to the invention is provided and an evaluation device for an in-situ measurement of the surface finishing of the textile web and/or a state of wear of the textile processing station is provided or can be connected by wire or wirelessly.
  • a textile processing station comprising at least two rollers for a textile web, e.g. deflection, processing or winding rollers, and preferably textile processing elements, in particular on one or more rollers in the form of abrasives or the like, wherein a device according to the invention is provided and an evaluation device for an in-situ measurement of the surface finishing of the textile web and/or a state of wear of the textile processing station is provided or can be connected by wire or wirelessly.
  • the invention provides an in-situ measuring method for objectively assessing the surface finishing of textiles, in which a textile web is guided between two rolls over an element according to the invention or a device according to the invention, in particular with a textile processing station according to the invention, preferably the contact tension between the contact surface and the textile web is set, sound is detected via the acoustic sensor, the detected sound is evaluated in a predetermined frequency range, and depending on the evaluation, the surface finishing is assigned a value. Depending on the value, processing can be stopped automatically or a signal can be output, for example to prevent the production of rejects or to indicate poor or deteriorating quality.
  • a visual display in a first color (goods OK) and a second color (goods not OK) and possibly other colors (goods borderline or similar) is useful. If the time of the value is recorded and saved, the quality value can be traced for each textile web section when it is unwound from the roll. The textile web can then be divided into rejects and good goods after production.
  • the energy is recorded and evaluated as a function of time.
  • a measure of the energy of the detected structure-borne sound is continuously calculated in a selected frequency range, e.g. between 20 kHz and 200 kHz or between 1 kHz and 1 MHz, or in two or more selected and preferably adjacent frequency ranges such as 100 Hz to 5 kHz and 5 kHz to 200 kHz, e.g. by summing the sound intensity or amplitudes over a time window of predetermined or variable length, usually between 1 microsecond and up to 1 second.
  • the amplitude of the sound signal between 25 kHz and 100 kHz of the last 50 ms before a time t can be continuously added up as a measure of the energy and form a measure of the energy at time t.
  • a narrower or wider frequency range or additional frequency ranges, each with individual time windows, can be used up to a quasi-continuous evaluation.
  • the change in energy over the time axis, i.e. the frequency of the energy change and the amplitude range can be compared with target values to assess the quality.
  • the recorded structure-borne sound can also be evaluated on the basis of a particularly multi-dimensional pattern recognition.
  • the temporal progression of sound frequency and amplitude (or intensity) can also be evaluated in multiple dimensions, in particular pattern evaluation.
  • an artificial intelligence (AI) can be trained with samples of good and faulty material.
  • the evaluation examines the amplitude as a function of time for variation and/or for predetermined patterns; and/or the temperature and/or humidity and/or the contact voltage can be taken into account; and/or the wear of the textile processing and/or testing station or parts thereof can be assessed via the acoustic evaluation.
  • Fig. 1A, 1B illustrate a textile processing station.
  • Fig. 2A illustrates a device at the textile processing station of Fig. 1 .
  • Fig. 2B illustrates a roughening roller
  • Fig. 3 shows a device.
  • Fig. 4 shows the device on a textile web.
  • Fig. 5 shows a textile web on pulleys and a device as well as an evaluation unit.
  • Fig. 6A, 6B, 6C show detail of the device.
  • an endless textile web (not shown in the figure) is guided under tension from a lower roller 2 over three elements 3 for exciting and absorbing acoustic vibrations to an upper roller 4.
  • the area outlined in yellow in Fig. 1A and shown enlarged in Fig. 2A illustrates the course of the textile web 5, which in the figure comes from the bottom left from a protected area of the textile processing station 1 and is deflected upwards on the lower roller 2 and to the left on the upper roller 4 back into the protected area.
  • the surface treatment of the textile web 5 can be carried out within the protected area of the textile processing station 1 and/or on the lower roller 2.
  • it is known in the prior art e.g. during so-called roughening on a roller or drum, to provide scratch rollers over which the textile web is guided, see Fig. 2B.
  • Further or other surface treatments are shearing, sanding, grinding, etc.
  • a device 6 is attached to the textile web processing station 1 above the roller 2.
  • the device 6 engages in the circulating path of the processed textile web 5 with three exemplary half-rod-shaped elements 7 in such a way that it is deflected to the left in the figure and is guided tightly with an adjustable tension along the three elements 7.
  • the movement of the textile web 5 along the elements 7 generates acoustic vibrations as a result of friction.
  • the elements 7 each have an acoustic sensor 8 which detects the structure-borne sound of the respective element 7.
  • the sensor data can be amplified and, if necessary, digitized by signal amplifiers assigned to the sensors 8, which can be provided, for example, on a holder 9 of the elements, in order to be forwarded wired or wirelessly to an evaluation unit 10 (see Fig. 5).
  • the elements 7 are half-rod-shaped with a spring extending out from the rear, which are inserted into a groove of the holder 9, here in the form of a metal rail, for example with almost no distance from one another.
  • the deflection of the textile web is clearly visible in the image in Fig. 4.
  • the deflection can be adjusted for optimum web tension. This can be done using a lever device 11 as shown in the figure or using a linear adjustment device 12, see Fig. 6A. It is expedient to set at least two different contact tensions for the textile web; ideally, intermediate values can be set between these two contact tensions.
  • the measurement signals recorded and, if necessary, amplified via an amplifier 13 are fed to an evaluation device 14 for an in-situ measurement of the surface finishing of the textile web, see Fig. 5.
  • the evaluation device can be a computer or a dedicated control unit, which also electronically sets or regulates the contact voltage.
  • the elongated holder 9 with the element 7 or the multiple elements 7 and optionally the lever device 11 or adjustment device 12 can be designed as shown in Fig. 6B as a particularly retrofittable device for attachment to a textile web processing station, optionally with fastening brackets 15, see Fig. 6C.
  • a temperature sensor, a humidity sensor and/or a contact force sensor are also expediently provided on the device.
  • the invention enables an in-situ measuring method for objectively assessing the surface finishing of textiles, in which the textile web 5 is guided between two rollers 2, 4 over an element 7 or a (retrofitted) device with the element 7, in particular in a textile processing station 1.
  • the surface of the textile web 5 is processed on at least one roller, in particular a roller in the textile processing station 1 or the roller 2.
  • a suitable contact voltage which can be set and, if necessary, regulated, between the contact surface of the element 7 and the textile web 5
  • sound is generated and recorded via the acoustic sensor, the recorded sound is evaluated in a predetermined frequency range, and the surface finishing is assigned a value depending on the evaluation.
  • the energy clearly varies in the pre-run, during the 1st and 2nd delivery and during the post-run.
  • the energy When the machine is at a standstill, the energy remains at a basic level. A seam in the textile web can be seen as a spike.
  • the variation in energy is a measure of the haptic quality. If the frequency of the energy remains the same (good) or if it varies greatly over time (unfavorable), the fluctuations in the variation are the same or in a given range (good) or unequal with outbreaks (bad), etc. Further evaluation can be carried out here using pattern recognition, evaluation of the energy change per unit of time, occurrence of spikes, etc.
  • the sound measurement can be easily recorded as energy at a specific time by summing over the entire recorded sound frequency range, as shown.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un élément (3) destiné à activer et à diminuer des vibrations acoustiques d'une bande textile (5), ledit élément comprenant un corps, en particulier allongé, ayant une surface de contact courbe pour assurer la mise en contact de la bande textile sous tension ainsi qu'un capteur acoustique (8) destiné à diminuer les vibrations acoustiques. L'invention concerne également un dispositif (6) à monter sur un poste de traitement de bande textile (1) comportant ledit élément ainsi qu'un poste de traitement textile comprenant ledit dispositif. L'invention concerne en outre un procédé de mesure in situ permettant d'effectuer l'évaluation objective de l'ennoblissement de textiles.
PCT/EP2024/065764 2023-06-07 2024-06-07 Procédé de mesure in situ pour effectuer une évaluation objective de l'ennoblissement de textiles, et éléments et dispositifs associés Ceased WO2024251963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202023001240.6U DE202023001240U1 (de) 2023-06-07 2023-06-07 Elemente und Vorrichtungen für ein In-situ Messverfahren zur objektiven Beurteilung der Oberflächenveredelung von Textilien
DE202023001240.6 2023-06-07

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WO2024251963A1 true WO2024251963A1 (fr) 2024-12-12

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PCT/EP2024/065764 Ceased WO2024251963A1 (fr) 2023-06-07 2024-06-07 Procédé de mesure in situ pour effectuer une évaluation objective de l'ennoblissement de textiles, et éléments et dispositifs associés

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DE (1) DE202023001240U1 (fr)
WO (1) WO2024251963A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB961914A (en) * 1961-11-16 1964-06-24 Hans Biel Improvements in or relating to detecting apparatus
US5014547A (en) * 1988-11-15 1991-05-14 Stresswave Technology Limited Apparatus for determining the surface roughness of a material
EP0757788B1 (fr) * 1995-02-28 2001-11-28 Rhodia Industrial Yarns AG Procede et dispositif de detection de defauts de structure dans des matieres textiles plates en mouvement
US20030150270A1 (en) * 2000-06-09 2003-08-14 Marie -Ange Bueno- Bigue Method and device for assessing the surface condition of a material
EP3153619B1 (fr) * 2015-10-09 2018-05-02 Lafer S.p.A. Machine pour traiter des produits textiles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541261A1 (de) * 1975-09-16 1977-03-17 Hestronic Vertriebs Anstalt Verfahren und vorrichtung zur ueberwachung der belegung textiler unterlagen mit kunstharz
DE3316171A1 (de) * 1983-05-04 1984-11-08 Mahlo GmbH & Co KG, 8424 Saal Verfahren und vorrichtung zur kontrolle der farbaufnahmefaehigkeit von textilien
US6131452A (en) * 1995-02-28 2000-10-17 Rhodia Filtec Ag Process and device for detecting structural faults of moving flat textile materials
DE19908932A1 (de) * 1999-03-02 1999-12-09 Jueke Mechanische Und Elektron Selbsttätige Vorrichtung zur Bestimmung des Flächengewichts von Papier, Geweben, Vliesstoffen, Folien und dergleichen
WO2006091161A1 (fr) * 2005-02-24 2006-08-31 Kambo Skans Ab Systeme et procede de determination des caracteristiques d'un materiau en mouvement a l'aide de micro-ondes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB961914A (en) * 1961-11-16 1964-06-24 Hans Biel Improvements in or relating to detecting apparatus
US5014547A (en) * 1988-11-15 1991-05-14 Stresswave Technology Limited Apparatus for determining the surface roughness of a material
EP0757788B1 (fr) * 1995-02-28 2001-11-28 Rhodia Industrial Yarns AG Procede et dispositif de detection de defauts de structure dans des matieres textiles plates en mouvement
US20030150270A1 (en) * 2000-06-09 2003-08-14 Marie -Ange Bueno- Bigue Method and device for assessing the surface condition of a material
EP3153619B1 (fr) * 2015-10-09 2018-05-02 Lafer S.p.A. Machine pour traiter des produits textiles

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