EP1242659B1 - Procede et dispositif pour reconnaitre et evacuer une matiere etrangere presente dans un flux de fibres constitue de fibres textiles comprimees - Google Patents

Procede et dispositif pour reconnaitre et evacuer une matiere etrangere presente dans un flux de fibres constitue de fibres textiles comprimees Download PDF

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Publication number
EP1242659B1
EP1242659B1 EP00979313A EP00979313A EP1242659B1 EP 1242659 B1 EP1242659 B1 EP 1242659B1 EP 00979313 A EP00979313 A EP 00979313A EP 00979313 A EP00979313 A EP 00979313A EP 1242659 B1 EP1242659 B1 EP 1242659B1
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EP
European Patent Office
Prior art keywords
fibres
stream
roller
elements
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.)
Expired - Lifetime
Application number
EP00979313A
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German (de)
English (en)
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EP1242659A1 (fr
Inventor
François BAECHLER
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
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Uster Technologies AG
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/003—Detection and removal of impurities

Definitions

  • the invention relates to a method and a device for recognizing and discharging of foreign material in a fiber stream made of compressed textile fibers.
  • DE 44 15 907 describes a machine for recognizing foreign parts in fiber streams known in which the fibers are compressed in a shaft and attached to a number of Color sensors are passed.
  • the foreign parts by their color to be able to recognize the color of the fibers to be examined in general deviates, the background is kept in a color that matches the fibers to be examined is similar.
  • the background is through a roller or a conveyor belt formed, the surface of which has a clear structure, the locomotion which favors fibers.
  • WO 95/16909 is also a device for the "on-line" detection of contaminants known in white fiber mass, in which the fiber mass between two each other opposite rollers is passed, the one roller transparent material. Behind the roller made of transparent material is one Optics arranged with a detector that receives light from the mass of fibers that pass through the clear roller passes through.
  • the fiber mass is made up of two drafting cylinders driven on both sides of the roller made of transparent material.
  • the invention as characterized in the claims, therefore solves the Task to create a method and an apparatus which have the disadvantages mentioned avoid and allow the fiber stream in industrial use even with high To test speeds continuously, the test conditions extending over longer periods Don't change time.
  • the object is achieved in that the fiber stream is compressed in sections, positively driven, optically recorded and the presence of foreign material is examined.
  • the fiber stream is preferably form-fitting over offset sections driven wherever the optical detection takes place.
  • the optically captured sections have a limited and adjustable thickness. For optical detection, this is from Fiber stream reflected light from a light source broken down into multiple colors and from each A signal is obtained in color, which is evaluated separately in order to extract foreign material capture that responds particularly strongly to a color.
  • the use of photodiodes for the detection of light increases the Accuracy of detection further.
  • the proposed solution also allows light emitting diodes with white light as a light source, which is in contrast less heating compared to halogen light and more uniform light over longer periods of time results.
  • Fig. 1 shows an apparatus which consists of the following processing stages Condenser 1, break contact 2, storage channel 3, foreign substance detection device 4, Foreign matter separation device 5 and outlet channel 6 for cleaned fiber material.
  • Condenser 1 break contact 2
  • storage channel 3 foreign substance detection device 4
  • Foreign matter separation device 5 foreign matter separation device 5
  • outlet channel 6 for cleaned fiber material.
  • you can see other parts such as: foreign matter collecting container 7, separation device 8, control unit 9, measurement connection 10, control connection 11, input and output unit 12, and a compressed air line 13 for the separating device 8.
  • the stage for the foreign substance detection device 4 is shown in more detail in FIG. 2.
  • two roller-shaped elements 14 and 15, which are separate but synchronous are driven and move in the direction of arrows 16 and 17.
  • the elements 14 and 15 delimit a measuring channel 18 into which the storage channel 3 opens, the The cross section of the measuring channel 18 is, however, considerably smaller than that of the storage channel 3.
  • In the roller-shaped elements 14 and 15 are each an optical evaluation unit 19 and 20 arranged fixed for signal processing.
  • FIG. 3 shows a part of the foreign substance detection device 4 according to FIG. 2 again the measuring channel 18, parts of the roller-shaped elements 14 and 15 and the Evaluation units 19 and 20 for signal processing are recognized.
  • teeth 21 and 22 are arranged, the interlock without touching, so that there is always a measuring channel 18 between the Teeth 21, 22 remain open throughout.
  • transparent light guides such as preferably lenses 23, 24 arranged that a light-conducting connection between the measuring channel 18 and the Manufacture interior 25, 26 of the roller-shaped elements 14, 15.
  • Each evaluation unit 19 20 for signal processing consists of several optical evaluation modules, which are connected to one Lens or a lens 27, several color filters and light guides 28 and optical Transducers 29 are equipped for signal processing.
  • Fig. 4 shows a device with only one roller-shaped element 14, which is in front of a wall 30 is arranged so that between the element 14 and the wall 30 there is a channel 31 forms for the fiber stream.
  • a simple but driven roller 32 can also be provided be, as shown in FIG. 5.
  • FIG. 7 is a schematic illustration of the evaluation units 19, 20 with the lenses or Lenses 27 and the light guides 28. These are connected to measuring elements 37 via color filters 38 connected the intensity of the filtered light. This is followed by a current-voltage converter in series 39, an amplifier 40 and an A / D converter 41. This is on one Element 42 connected for linearization and standardization. This is again on the one hand to a circuit for evaluating the light intensity 43 and on the other hand directly to a memory 44 for the individual filtered color values and the total color intensity connected. This memory 44 is in turn connected to a unit 46 on the one hand Definition of nominal color values and connected to a delay circuit 45. A unit 47 is connected to the unit 46 for defining and storing Tolerance values, which is again connected to a comparator 48.
  • the comparator 48 is also connected to the delay circuit 45 and determines the state an output 49.
  • a light guide 28 is also connected to a light source 50.
  • On Position sensor 51 constantly measures the position of the roller-shaped elements 14, 15. The Position sensor 51 controls the A / D converter 41 and the via a line 52 Delay circuit 45. The connection of the Nominal color values are triggered. Tolerance values are obtained via a connection 54 established.
  • the fibers trapped in section 62 which is just in front of the light guide 24, the completely cover the background, are via the light guide 24 from the light source 50 illuminated.
  • the light reflected by the fibers passes through the lens 27 (FIG. 3) and the light guides 28 into the color filters 38 (FIG. 7), where portions of the red (R), green (G) and blue (B) light filtered out and separated to the Measuring elements 37 are delivered.
  • These are in the current-voltage converter 39 Shares converted to voltage values.
  • the voltages generated for each color are transmitted via the amplifier 40 to the analog / digital converter 41, which via a Signal from the position sensor 51 from the line 52 and thus by the position of the Light guide 24 is clocked on the roller-shaped elements 14, 15.
  • the comparator becomes 48 decided whether a signal for excretion is output via the output 49. This happens when the delayed values for the intensities of each color delay circuit 45 are outside the tolerance values set by the unit 47 are specified. This is done by a comparison in comparator 48.
  • the in Fig. 7 device is part of the control unit 9 (Fig. 1) which means that the Signal for excretion via the control line 11 to the excretion device 8 is delivered, which is the part of the Eject fiber stream with a compressed air pulse.
  • the processes described above and running in the evaluation units 19, 20 can also be described in a second way, namely as follows and with Help of Fig. 9.
  • each color can be interpreted as vector R, G, B, whereby the vectors R, G, B to a resulting vector H can be summarized if the vectors R, G and B represent the same unit size.
  • Algorithms can also be specified which, for example, cause that a plurality of separating devices 8 lying next to one another are activated together, Then there are several evaluation circuits 29 as shown in FIG. 8 in groups combined common outputs. So signals for excretion of foreign substances via the outputs 55, 56, 57, 58, and / or 59. To For example, additional tolerances could be specified, which if exceeded will trigger such common excretions, although the tolerances for one single output have not yet been exceeded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Spectrometry And Color Measurement (AREA)

Claims (9)

  1. Procédé de reconnaissance et d'expulsion de matériaux étrangers dans un flux de fibres constitué de fibres textiles comprimées, caractérisé en ce que le flux de fibres est comprimé en segments (62), que par le biais des segments, un entraínement mécanique, une détection optique et la vérification de la présence de matériaux étrangers sont effectués.
  2. Procédé selon la revendication 1, caractérisé en ce que les segments présentent une épaisseur ajustable.
  3. Procédé selon la revendication 1, caractérisé en ce que, pour la détection optique du flux de fibres, de la lumière réfléchie est décomposée en plusieurs couleurs (R, V, B) et qu'un signal est, tiré de chaque couleur, signal qui est évalué séparément pour détecter des matériaux étrangers qui correspondent à une couleur, de manière particulièrement prononcée.
  4. Dispositif de reconnaissance et d'expulsion de matériaux étrangers dans un flux de fibres constitué de fibres textiles comprimées, caractérisé par au moins un élément en forme de cylindre (14, 15) qui comporte des éléments (21, 22) pour l'engrenage mécanique dans le flux de fibres et pour l'entraínement du flux de fibres, éléments entre lesquels sont disposés des éléments conduisant la lumière (23, 24).
  5. Dispositif selon la revendication 4, caractérisé en ce que deux éléments en forme de cylindre sont disposés l'un en face de l'autre, comportent, en tant qu'éléments d'engrènement mécanique, des dents (21, 22), sont disposés de manière à s'engrener l'un dans l'autre sans se toucher et forment un canal de mesure (18) avec des segments (62, 63) décalés, pour le flux de fibres.
  6. Dispositif selon la revendication 4, caractérisé en ce que des éléments conduisant la lumière sont disposés les uns à côtés des autres sur l'élément en forme de cylindre, en colonnes (35, 36) et en rangées (33, 34).
  7. Dispositif selon la revendication 4, caractérisé en ce qu'une unité d'évaluation (19, 20) est réalisée pour l'évaluation des signaux provenant du flux de fibres et disposée dans un élément en forme de cylindre (14, 15).
  8. Dispositif selon la revendication 7, caractérisé en ce que l'unité d'évaluation comporte des filtres (38) afin de diviser la lumière reçue en plusieurs couleurs.
  9. Dispositif selon la revendication 7, caractérisé en ce qu'à plusieurs éléments optiques est attribuée une unité d'évaluation commune qui, dans une position de l'élément en forme de cylindre, est respectivement en communication avec un élément conduisant la lumière.
EP00979313A 1999-12-16 2000-12-11 Procede et dispositif pour reconnaitre et evacuer une matiere etrangere presente dans un flux de fibres constitue de fibres textiles comprimees Expired - Lifetime EP1242659B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH230899 1999-12-16
CH230899 1999-12-16
PCT/CH2000/000657 WO2001044545A1 (fr) 1999-12-16 2000-12-11 Procede et dispositif pour reconnaitre et evacuer une matiere etrangere presente dans un flux de fibres constitue de fibres textiles comprimees

Publications (2)

Publication Number Publication Date
EP1242659A1 EP1242659A1 (fr) 2002-09-25
EP1242659B1 true EP1242659B1 (fr) 2004-03-17

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EP00979313A Expired - Lifetime EP1242659B1 (fr) 1999-12-16 2000-12-11 Procede et dispositif pour reconnaitre et evacuer une matiere etrangere presente dans un flux de fibres constitue de fibres textiles comprimees

Country Status (6)

Country Link
US (1) US6848149B1 (fr)
EP (1) EP1242659B1 (fr)
JP (1) JP2003517108A (fr)
CN (1) CN1245546C (fr)
DE (1) DE50005738D1 (fr)
WO (1) WO2001044545A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233011B4 (de) * 2002-07-20 2020-03-19 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereimaschine zur Erfassung und Beurteilung von Textilfasermaterial
JP4654086B2 (ja) * 2005-07-29 2011-03-16 本田技研工業株式会社 弾性部材の品質評価方法及び装置
CN113957544B (zh) * 2021-10-21 2022-08-16 高梵(浙江)信息技术有限公司 一种纳米抗菌羽绒的加工处理装置
SE545701C2 (en) * 2022-03-18 2023-12-12 Respin Ab Arrangement for separating a woven textile into recovered fibers and textile residual

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JPS63274863A (ja) * 1987-05-01 1988-11-11 Tsuzuki Boseki Kk 原綿中の異物検出方法及び装置
DE3734145A1 (de) * 1987-10-09 1989-04-27 Hollingsworth Gmbh Verfahren und vorrichtung zum reinigen und oeffnen von in flockenform befindlichem fasergut, z. b. baumwolle
US5130559A (en) * 1989-08-26 1992-07-14 Trutzschler Gmbh & Co. Kg Method and apparatus for recognizing particle impurities in textile fiber
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DE4129882C2 (de) * 1990-09-17 2002-02-07 Truetzschler Gmbh & Co Kg Vorrichtung zum Abscheiden metallischer Verunreinigungen aus einer Fasertransportstrecke in der Spinnereivorbereitung
DE59108679D1 (de) * 1990-11-02 1997-05-28 Rieter Ag Maschf Verfahren zum Feststellen einer Eigenschaft eines Faserverbandes
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Also Published As

Publication number Publication date
JP2003517108A (ja) 2003-05-20
EP1242659A1 (fr) 2002-09-25
US6848149B1 (en) 2005-02-01
DE50005738D1 (de) 2004-04-22
CN1245546C (zh) 2006-03-15
CN1411518A (zh) 2003-04-16
WO2001044545A1 (fr) 2001-06-21

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