EP0884408B1 - Procédé et dispositif pour détecter des impuretés et des fibres étrangères dans une bande de fibres - Google Patents

Procédé et dispositif pour détecter des impuretés et des fibres étrangères dans une bande de fibres Download PDF

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Publication number
EP0884408B1
EP0884408B1 EP98109996A EP98109996A EP0884408B1 EP 0884408 B1 EP0884408 B1 EP 0884408B1 EP 98109996 A EP98109996 A EP 98109996A EP 98109996 A EP98109996 A EP 98109996A EP 0884408 B1 EP0884408 B1 EP 0884408B1
Authority
EP
European Patent Office
Prior art keywords
band
sensor
tape
extraneous
foreign
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
EP98109996A
Other languages
German (de)
English (en)
Other versions
EP0884408A1 (fr
Inventor
Christoph Färber
Bodo Ellerbrock
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.)
Zellweger Luwa AG
Original Assignee
Zellweger Luwa AG
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Filing date
Publication date
Application filed by Zellweger Luwa AG filed Critical Zellweger Luwa AG
Publication of EP0884408A1 publication Critical patent/EP0884408A1/fr
Application granted granted Critical
Publication of EP0884408B1 publication Critical patent/EP0884408B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/22—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to presence of irregularities in running 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
    • 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
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D01H13/1616—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material characterised by the detector
    • D01H13/1633—Electronic actuators
    • D01H13/165—Photo-electric sensing means
    • 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 method and a device for detecting foreign substances and foreign fibers in a fiber composite.
  • EP 0 744 478 describes a device for foreign fiber detection on one Known opening machine with which fibers in a fiber opening line on color deviations be examined by means of color sensors. This happens in the area of an opening roller, where the fibers lie or rest on the opening roller in a very loose bond.
  • WO 93/13407 describes a method for recognizing foreign fibers in a moving one Known yarn in which light is thrown onto the yarn at a fixed location and several sensors record the reflected and the transmitted light.
  • a sliver monitoring device that does the job has to detect a sliver break and the transport movement of the belt is detected by a sensor.
  • a test device is known from GB 1 211 463 with which foreign fibers can be combined in one in the laboratory Can recognize band of fibers.
  • the tape is flattened and fanned out, so that it only forms a comparatively thin layer that shines through can be.
  • the invention as characterized in the claims, therefore solves the problem Foreign matter and foreign fibers in a fiber composite in the current production then capture if, on the one hand, they are distracting due to their concentration can and if they are not already processed in a finished product.
  • the detection can be carried out by capacitive or optical sensors take place, whose signals are evaluated accordingly. For example, that the signal from a capacitive sensor is not examined for deviations is how they cause tape weight fluctuations, but after deviations like they are typical for foreign fibers, foreign substances, etc.
  • the signals are evaluated so that, for example, deviations in color or Surface texture can be filtered out or isolated and so a foreign substance Show.
  • incident light should preferably be used and the reflection of light can be measured. Different colors can be received by filtering Light can be made visible in the sensor signals.
  • the location of the detection of foreign fibers and foreign substances is preferably between the exit of a card, line or the like and the entry into a jug.
  • the tape is left in its shape, i.e. Not changed. If contamination is detected, there are various options for it react.
  • a first option is the production or the processing device shut down.
  • Other options are the carrier of the tape or to mark the jug that received contaminated tape or the tape mark yourself to remove it later. The contaminants can also be cut out or otherwise removed, causing the tape to be interrupted. Or, an alarm can be triggered.
  • the advantages achieved by the invention can be seen in particular in that the fiber composite, for example, cotton, not widely diversified at the point of registration is what reduces the effort for detection and does not destroy the test object.
  • a special deformation of the band is not necessary. If the contamination occurs frequently, it is almost certain that it Surface of the tape occur and thus can be detected safely. Here you can Also remove impurities without shutting down the entire production process, because mostly only individual cans of an entire group are affected. With the invention concentrated, large-scale contaminations or impurities that are appear on the surface of the tape.
  • Fig. 1 shows a simplified representation of a card 1, which is known per se and therefore processed a fiber composite 2, not shown here, by from a flat nonwoven fabric 3 a tape 4 with a substantially round or oval cross-section is produced.
  • the tape 4 is placed in a can 5 in a known manner, the must be replaced periodically when it is filled.
  • a sensor 6 is arranged, the is connected to a computer 8 via a line or a bus 7. This is preferred further connected via an output 14 to a marking device 15.
  • the exit 14 could also lead to an alarm device.
  • Fig. 2 shows a possible embodiment for a sensor 6 for the band 4.
  • This can be two parts 9 and 10 consist of the same structure and can be pivoted against each other are stored, as indicated by an arrow 11.
  • Both parts 9 and 10 have each have a measuring space 12, 13 open on one side, both of which are arranged in relation to one another are that the band 4 can cross the two sensor parts 9 and 10 by the traverses two measuring rooms 12, 13.
  • the arrangement of the measuring rooms 12, 13 is preferred selected so that the band 4 is over its entire circumference by the sensor 6 is enclosed.
  • the measuring room 12 it has three boundary surfaces 12a, 12b and 12c, and at least one, preferably two of these boundary surfaces have a measuring system that, for example, in a window 20, 21 empties.
  • Each sensor part 9, 10 has a measuring system, such as that shown in FIGS Patent applications WO 93/13407 or EP 0 401 600 are known. You can also Parts of the measuring systems which are assigned to opposite windows, together form a measuring system. So e.g. Share the window 20 and an invisible window are assigned in the boundary surface 12c. To insert the tape 4 can at least a part 9, 10 can be pivoted away manually or automatically, so that the tape 4 can be inserted laterally into the measuring rooms 12, 13, for example.
  • Fig. 3 shows a portion 17 of a tape on the surface 22 of an impurity 18 can be seen, which is to be covered by the invention. This exists, for example from a small composite of different colored fibers, for example due to contamination generated in a previous processing stage or in the card itself were. At point 19 it can also be seen that the impurity 18 in places the surface 22 has stepped away.
  • a threshold 28 is now set so that it is not reached by signals from isolated contaminants becomes. However, if this threshold value 28 is exceeded for a time like this for the If signal 27 is the case, then its duration, which is represented by arrow 31, is recorded. A threshold value 32 can also be specified for this period.
  • FIG. 5 shows a section 33 known per se at the outlet 34, a sensor 35 and a Tape cutter 36 are arranged for a tape 37.
  • the sensor 34 which is like a sensor 2, and the tape cutter 36 are both connected to a computer 38 connected.
  • the operation of the invention is as follows: Before commencing full operation of the card, leading strip from the card is introduced into sensor 6, in which, for example, part 10 is pivoted away, as indicated by arrow 11. When the belt 4 is inserted, the part 10 can be swiveled back again and the card can be fully operated. Then the sensor 6 detects, for example, optical color or intensity deviations or capacitive deviations in the dielectric and converts them into an electrical signal 25, which is evaluated in the computer 8. Algorithms and threshold or comparison values 28, 32 are stored in the computer 8, which allow foreign fibers or foreign substances to be recognized from the signal in the line 7. If such are recognized, a signal is output via the output 14, which triggers an alarm or the shutdown of the system.
  • the output 14 can optionally also be connected to a marking device 15, controlled by this, the can 5 in question marked as the carrier of the tape.
  • a marking device 15 can be designed, for example, as a paint spraying device that marks the outer surface of the jug with paint. But it is also conceivable in automatic can change systems, by the signal in output 14 a can change trigger prematurely in order to place contaminated spots in special cans.
  • a Marking device 16 could also be attached directly to the sensor 6 around the position a contamination on the tape 4 itself in a conspicuous way, so that the tape can later be treated by hand (Fig. 1).
  • the sensor 6 detects changes, in particular if it has an optical measuring system the color or structure of the surface of the tape.
  • the measuring system should have a rather low resolution of the location, namely that individual foreign fibers are not recognized at all.
  • the resolution is also chosen so that contamination or foreign fibers are present inside of the tape are not recognized at all, even if they appear on the surface should shine through. That is why the optical measuring system only reflects on the tape Light measured. For this, the surface is captured all around, the entire circumference. On in this way, the detection can also be carried out, for example, at high belt speeds 300 m / min or 5m / sec.
  • the low resolution is achieved in that little sensitive measuring systems or that 8 high threshold values for deviations in the computer be set by a normal signal to indicate foreign fibers.
  • the resolution is in particular also predetermined by the threshold values 28, 32, with the If the threshold 28 is exceeded, a counting process for the time 31 is started in the computer, for which in turn the threshold value 32 applies.
  • the senor 35 can be provided, which outputs signals to the computer 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Claims (8)

  1. Procédé pour détecter des matières étrangères et des fibres étrangères dans un composite de fibres, caractérisé en ce que le composite de fibres (2) est formé en une bande (4, 17), et en ce que les matières étrangères et les fibres étrangères dans la bande sont détectées à la surface (22).
  2. Procédé selon la revendication 1, caractérisé en ce qu'on exécute après la détection des matieres étrangères et des fibres étrangères une opération constituée d'un groupe d'opérations, comprenant un marquage de la bande, un marquage du support de la bande, un retrait de la bande, une interruption de la bande, une mise à l'arrêt du dispositif de traitement et un déclenchement d'une alarme.
  3. Dispositif pour détecter des matières étrangères et des fibres étrangères dans un composite de fibres pour la mise en oeuvre du procédé selon la revendication 1, caractérisé par un capteur (6) au voisinage d'une bande qui se déplace (4), qui est disposé pour entourer la bande au moins partiellement.
  4. Dispositif selon la revendication 3, caractérisé en ce que le capteur est réalisé pour entourer la bande de tous côtés.
  5. Dispositif selon la revendication 3, caractérisé en ce que le capteur est relié à un élément d'un groupe d'éléments, comprenant un dispositif de marquage (15, 16), un dispositif de coupe de bande (36) et un dispositif d'alarme.
  6. Dispositif selon la revendication 3, caractérisé en ce que le capteur (35) est disposé à la scrtie (34) d'un chemin (33).
  7. Dispositif selon la revendication 3, caractérisé en ce que le capteur est disposé entre un emplacement de livraison d'une carde (1) et d'un pot (5).
  8. Dispositif selon la revendication 3, caractérisé en ce que le capteur présente au moins un système de mesure qui fonctionne d'une manière optique et qui évalue des rayons de lumière réfléchis à la bande.
EP98109996A 1997-06-11 1998-06-02 Procédé et dispositif pour détecter des impuretés et des fibres étrangères dans une bande de fibres Expired - Lifetime EP0884408B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1409/97 1997-06-11
CH140997 1997-06-11
CH140997 1997-06-11

Publications (2)

Publication Number Publication Date
EP0884408A1 EP0884408A1 (fr) 1998-12-16
EP0884408B1 true EP0884408B1 (fr) 2002-09-04

Family

ID=4209780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109996A Expired - Lifetime EP0884408B1 (fr) 1997-06-11 1998-06-02 Procédé et dispositif pour détecter des impuretés et des fibres étrangères dans une bande de fibres

Country Status (5)

Country Link
US (1) US5926267A (fr)
EP (1) EP0884408B1 (fr)
JP (1) JPH1114333A (fr)
CN (1) CN1140800C (fr)
DE (1) DE59805374D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002522322A (ja) * 1998-07-31 2002-07-23 ツエルヴエーゲル・ルーヴア・アクチエンゲゼルシヤフト 糸状のテスト部材のための測定装置
EP1290440B1 (fr) * 2000-05-31 2012-06-06 Uster Technologies AG Procede et dispositif de detection d'impuretes dans un produit de type fil a deplacement longitudinal
US7103440B2 (en) * 2001-12-11 2006-09-05 Rieter Ingolstadt Spinnereimaschinenbau Ag Use of microwaves for sensors in the spinning industry
IT1394152B1 (it) * 2008-09-19 2012-05-25 Spillerlane S R L Dispositivo e procedimento per l'individuazione e l'eliminazione di impurita' da fibre tessili e macchina tessile provvista di tale dispositivo
CN103290543A (zh) * 2013-05-13 2013-09-11 天宇羊毛工业（张家港保税区）有限公司 针梳机平台输送机构
CN105548191B (zh) * 2016-02-03 2019-01-25 河北科技大学 布面绒毛率检测装置
CN109187370B (zh) * 2018-08-10 2021-04-02 江苏恒神股份有限公司 一种碳纤维颜色差异检测方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1560540A1 (de) * 1963-07-04 1970-06-25 Reiners Walter Dr Ing Vorrichtung zur UEberwachung laufender Faeden
BE704412A (fr) * 1967-09-28 1968-02-01
US3746865A (en) * 1971-07-06 1973-07-17 Fiber Industries Inc Threadline defect detector
ATE67595T1 (de) * 1985-04-04 1991-10-15 Commw Scient Ind Res Org Ueberwachung von verunreinigungen in textilerzeugnissen.
JPS6221047A (ja) * 1985-07-19 1987-01-29 Nippon Mengiyou Gijutsu Keizai Kenkyusho 繊維材料中の着色異物検出方法とその装置
JP2816702B2 (ja) * 1989-05-16 1998-10-27 旭光学工業株式会社 測定装置
US5070237A (en) * 1989-05-16 1991-12-03 Asahi Kogaku Kogyo K.K. Optical measurement and detection system
CH678172A5 (fr) * 1989-06-07 1991-08-15 Zellweger Uster Ag
CH683293A5 (de) * 1991-12-20 1994-02-15 Peyer Ag Siegfried Fremdfasererkennung in Garnen.
EP0679599A3 (fr) * 1994-04-29 1996-10-30 Rieter Ag Maschf Dispositif de contrÔle pour ruban de fibres.
JPH0850105A (ja) * 1994-08-04 1996-02-20 Toray Ind Inc シート状物体ならびにその欠陥検査方法、欠陥検査装置および製造方法
JPH08254504A (ja) * 1994-11-29 1996-10-01 Zellweger Luwa Ag 伸長された物体の特性を記録するための方法と装置
DE19518783B4 (de) * 1995-05-22 2009-04-09 H. Hergeth Gmbh Fremdfaserdetektion an einer Öffnungsmaschine

Also Published As

Publication number Publication date
US5926267A (en) 1999-07-20
DE59805374D1 (de) 2002-10-10
CN1206109A (zh) 1999-01-27
EP0884408A1 (fr) 1998-12-16
JPH1114333A (ja) 1999-01-22
CN1140800C (zh) 2004-03-03

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