WO2011107600A1 - Verfahren zur erfassung von fehlstellen in einem laufenden faden mit verbesserter arbeitspunkteinstellung - Google Patents
Verfahren zur erfassung von fehlstellen in einem laufenden faden mit verbesserter arbeitspunkteinstellung Download PDFInfo
- Publication number
- WO2011107600A1 WO2011107600A1 PCT/EP2011/053333 EP2011053333W WO2011107600A1 WO 2011107600 A1 WO2011107600 A1 WO 2011107600A1 EP 2011053333 W EP2011053333 W EP 2011053333W WO 2011107600 A1 WO2011107600 A1 WO 2011107600A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light barriers
- shading
- thread
- trigger
- trigger light
- 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
Links
Classifications
-
- 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
- G01N33/365—Filiform textiles, e.g. yarns
-
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/32—Counting, measuring, recording or registering devices
-
- 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
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the present invention relates to a method for the contactless detection of defects in a running thread with a beam-optical sensor device according to the preamble of claim 1.
- defects are understood in particular protruding filaments or filament breaks, but also entrained by the current thread particles such as lint or dirt particles.
- filament breakage sensors are known which are used for quality assurance in the field of technical yarn production. Introduced into the series are two products. On the one hand the so-called “Fraytec System” of the company Enka Tecnica, and on the other hand the “FibreTQS System” of the company Fibrevision. Both systems detect filament breaks and other errors in different ways. While the “Fraytec system” detects filament breaks via light barriers arranged in various positions, the “FibreTQS system” measures the filament breaks via a shading optics by means of a noise signal analysis. Both systems are also described in EP 1 288 612 A2.
- the combined system has at least three light barriers, one of which forms a shading optics traversed by the current thread as a so-called shading light barrier, which detects the structure of the running thread, and of which at least two further trigger light barriers at different distances to the thread and / or on different sides of the thread are arranged so that only defects of the current thread lead to shading of the trigger photocells.
- the trigger light barriers are therefore not shaded by the thread in the error-free production process.
- a measuring arrangement for measuring objects which operates with a plurality of light barriers. In contrast to the present method, several light barriers are always shaded.
- a calibration is performed such that by means of a stepwise increase of the transmission power to a reference photocell a receive setpoint is set, and then a correction factor for all other photocells to this transmit power is determined to bring the local actual value to the desired value.
- Contaminations that penetrate into the radiation-optical sensor device may lead to distorted signal outputs of the light barriers, which affect the desired detection of defects in the current thread.
- the operating point of the trigger light barriers can be readjusted or tracked continuously at specific time intervals or also continuously. In the Abschattungslicht estradiosalica, such tracking can not be realized because then shading due to the material to be measured 5 would be compensated.
- Object of the present invention is to provide an improved method of the type mentioned, which is easy to perform with little effort and offers an improved way to compensate for contamination of the Abschattungslicht glacie.
- an operating point shift occurring in the case of the trigger light barriers is applied to the shading light barrier in such a way that the operating point of the shading light barrier is set or tracked in a predefinable dependence on the operating point shift of the trigger light barriers.
- the present invention also relates to an arrangement for carrying out the method of the type described above. Further advantages and features of the invention will become apparent from the following description and the embodiment illustrated in the drawing, which shows a schematic representation of an arrangement for carrying out the method according to the invention.
- Background of the illustrated system with a radiation-optical sensor device 1 is a combination of filament break detection on Licht Techentrigg réelle 2 with simultaneous use of shading optics 3 to detect the appearance of the filament breaks or defects of a running in the direction of arrow 4 thread 5 and further processed.
- six trigger light barriers 2 are provided, which are arranged on two different sides of the thread 5 at different distances to the thread 5 and at different positions in the threadline.
- the individual trigger light barriers 2 can each be made of discretely constructed light barriers or diode arrays.
- the Abschattungslicht she 3 works with collimated light, the light rays are parallel to each other.
- the beam diameter of the trigger light barriers 2 is significantly smaller than the beam diameter of the shading light barrier 3, so that a relatively small shading by a single protruding filament 7 causes a relatively greater change in the trigger light barriers 2 than in the shading light barrier 3 which is continuously shaded by the thread diameter.
- the signals supplied by the trigger light barriers 2 are fed to an evaluation unit which checks these signals for plausibility.
- the signals supplied by the trigger photocells 2 can be ignored if the signals are detected as not plausible.
- the plausibility can be checked based on the dependence of the signals of the trigger photocells 2 of the time.
- a so-called “lightning check”, ie a check for false signals due to external light flashes, can be integrated.
- This strategy is based on the arrangement of the individual trigger light barriers 2, which are arranged in different positions in the thread direction, while a filament error 7 at the trigger light barriers 2 always triggers events in a certain order, an interfering lightning triggers all trigger light barriers 2 almost simultaneously This simultaneity can be evaluated, reused and / or displayed with the aid of the evaluation electronics or the sensor program.
- the measuring system basically consists of several, areally arranged light barriers, contamination of the shading light barrier 3 can be detected and compensated.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Mechanical Engineering (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Quality & Reliability (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Geophysics And Detection Of Objects (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180012271.3A CN102906560B (zh) | 2010-03-04 | 2011-03-04 | 具有改进的操作点调整的、检测运转纱线中的缺陷的方法 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010010323.3 | 2010-03-04 | ||
| DE102010010323A DE102010010323A1 (de) | 2010-03-04 | 2010-03-04 | Verfahren zur Erfassung von Fehlstellen in einem laufenden Faden mit verbesserter Arbeitspunkteinstellung |
| DE102010010324.1 | 2010-03-04 | ||
| DE102010010324A DE102010010324A1 (de) | 2010-03-04 | 2010-03-04 | Verfahren zur Erfassung von Fehlstellen in einem laufenden Faden mit Plausibilitätskontrolle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011107600A1 true WO2011107600A1 (de) | 2011-09-09 |
Family
ID=44064914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/053333 Ceased WO2011107600A1 (de) | 2010-03-04 | 2011-03-04 | Verfahren zur erfassung von fehlstellen in einem laufenden faden mit verbesserter arbeitspunkteinstellung |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102906560B (de) |
| WO (1) | WO2011107600A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ2019196A3 (cs) * | 2019-03-29 | 2020-10-07 | Rieter Cz S.R.O. | Způsob bezdotykové optické detekce příze na pracovním místě textilního stroje pro výrobu příze, optický snímač příze a textilní stroj |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0643294A1 (de) * | 1993-09-09 | 1995-03-15 | Zellweger Luwa Ag | Verfahren und Vorrichtung zur Detektion von Fremdstoffen in einem textilen Prüfgut |
| EP1288612A2 (de) | 2001-08-25 | 2003-03-05 | Fibrevision Limited | Fadenüberwachung |
| US6744498B2 (en) * | 2000-02-26 | 2004-06-01 | W. Schlafhorst Ag & Co. | Method and device for the optical detection of foreign fibers and other impurities in a longitudinally traveling yarn |
| DE10353892A1 (de) | 2003-11-18 | 2005-06-16 | Ulrich Hellak | Messanordnung zum Ausmessen von Gegenständen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1798035A1 (de) * | 1968-08-09 | 1971-11-25 | Visomat Geraete Gmbh | Faeden ueberwachende Einrichtung (Flusenwaechter) |
| DD274786A1 (de) * | 1988-08-11 | 1990-01-03 | Adw Ddr Kybernetik Inf | Verfahren und anordnung zur ueberwachung der druckqualitaet mehrfarbiger rasterdruckvorlagen einer offset-druckmaschine |
| CH683378A5 (de) * | 1992-03-17 | 1994-02-28 | Zellweger Uster Ag | Verfahren und Vorrichtung zur Detektion von Verunreinigungen in einem textilen Prüfgut sowie Verwendung der Vorrichtung. |
| DE10161502A1 (de) * | 2001-12-14 | 2003-06-26 | Arteva Tech Sarl | Verfahren und Vorrichtung zur kontinuierlichen Ermittlung und Lokalisierung von Fadenfehlern einer in einer Ebene laufenden Fadenschar |
| DE102006035251A1 (de) * | 2006-07-26 | 2008-01-31 | Vienco Gmbh | Verfahren und Anordnung zur Bestimmung der Garnqualität und/oder Spulenqualität eines laufenden Fadens auf Basis der Laser-Doppler-Anemometrie |
-
2011
- 2011-03-04 WO PCT/EP2011/053333 patent/WO2011107600A1/de not_active Ceased
- 2011-03-04 CN CN201180012271.3A patent/CN102906560B/zh not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0643294A1 (de) * | 1993-09-09 | 1995-03-15 | Zellweger Luwa Ag | Verfahren und Vorrichtung zur Detektion von Fremdstoffen in einem textilen Prüfgut |
| US6744498B2 (en) * | 2000-02-26 | 2004-06-01 | W. Schlafhorst Ag & Co. | Method and device for the optical detection of foreign fibers and other impurities in a longitudinally traveling yarn |
| EP1288612A2 (de) | 2001-08-25 | 2003-03-05 | Fibrevision Limited | Fadenüberwachung |
| DE10353892A1 (de) | 2003-11-18 | 2005-06-16 | Ulrich Hellak | Messanordnung zum Ausmessen von Gegenständen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102906560A (zh) | 2013-01-30 |
| CN102906560B (zh) | 2015-03-04 |
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