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WO2002068740A1 - Procede et dispositif place sur une carde destines a identifier et a retirer des matieres etrangeres d'un materiau fibreux - Google Patents

Procede et dispositif place sur une carde destines a identifier et a retirer des matieres etrangeres d'un materiau fibreux Download PDF

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Publication number
WO2002068740A1
WO2002068740A1 PCT/EP2002/001629 EP0201629W WO02068740A1 WO 2002068740 A1 WO2002068740 A1 WO 2002068740A1 EP 0201629 W EP0201629 W EP 0201629W WO 02068740 A1 WO02068740 A1 WO 02068740A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber material
sensor system
separating device
card
separating
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/EP2002/001629
Other languages
German (de)
English (en)
Inventor
Jürg Faas
Götz Theodor GRESSER
Christian Sauter
Walter Kiechl
Andreas Meyenhofer
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.)
Maschinenfabrik Rieter AG
Jossi Holding AG
Original Assignee
Maschinenfabrik Rieter AG
Jossi Holding 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 Maschinenfabrik Rieter AG, Jossi Holding AG filed Critical Maschinenfabrik Rieter AG
Publication of WO2002068740A1 publication Critical patent/WO2002068740A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 present invention relates to a method and a device on a carding machine, which has a carding drum and at least one upstream briseur, for the detection and removal of foreign substances in fiber material, with at least one sensor system that reacts to foreign substances, for monitoring the fiber material, and with reference to the direction of movement of the fiber material arranged downstream separating device for separating the contaminated portion of the fiber material or the foreign matter.
  • BESTATIGUNGSKOPIE ren is that with the separation of the foreign fibers also good fibers are removed from the fiber material. This creates holes in the nonwoven fabric of the card, which leads to fluctuations in the yarn number of the card sliver. This is an extremely undesirable effect and leads to an impairment of the downstream spinning process.
  • the foreign matter is detected in the area of the breeze and / or the card drum and is excreted on the card drum.
  • the fiber material is present as a thin non-woven fabric, so that the detection of foreign substances can be done relatively easily.
  • the sensor system which can be a CCD camera, for example, recognizes differences in color or structure in the nonwoven fabric and thereby causes a signal which, after a predetermined time, causes the foreign substance to be removed from the nonwoven fabric.
  • Elimination also takes place in an area on the card where a thin nonwoven is present.
  • This has the further advantage that if, in addition to the foreign matter, good fiber material is also eliminated from the environment of the foreign matter, a very limited volume of fiber is also eliminated, which does not contribute significantly to the impairment of the remaining amount of fiber. A targeted removal of the foreign matter is thus achieved without a large amount of good fibers being removed as well.
  • the invention thus on the one hand brings about a simplified detection of the foreign substances in the fiber material and on the other hand, a very targeted excretion of the foreign matter with only a small part of the fiber material.
  • the sensor system and the separating device are advantageously arranged in such a way that the detection and removal of the foreign matter takes place where the fiber material is present as a nonwoven fabric.
  • the thinner the nonwoven the easier it is to capture the foreign matter and to target it, i.e. H. to be eliminated with as little good fiber as possible. It is therefore advantageous if the fiber material is guided past the sensor system and the separating device as a non-woven fabric.
  • an assessment of the foreign substance can be undertaken. For example, this can be used to decide whether it is necessary for the quality of the card sliver to be produced to remove the foreign matter or whether it is more advantageous to maintain the good fibers if the foreign material is retained.
  • the excretion pulse is controlled as a function of the size and / or mass of the foreign substance. In this way, gentle treatment of the good fibers is also possible, since the excretion pulse can be chosen to be so large that largely only the fiber material is excreted and only as few good fibers as possible are lost.
  • the arrangement of the sensors and the separating device also has the advantage that the fiber material practically does not change its relative position in the nonwoven on the way from the sensors to the separating device. This improves the effectiveness of the excretory system.
  • the elimination process itself can also be more precise.
  • the separation device is a blowing device acting in the circumferential direction of the card drum, it is advantageous if the air speed of the blowing device is selected to be greater than the peripheral speed of the card drum. This has the effect that the foreign substance to be separated is additionally accelerated and detached from the card drum.
  • the sensor system is arranged on the beater and / or the card drum and the separating device on the card drum. After the fibers on the card drum remain several revolutions and are repeatedly doubled, the removal of the foreign substances on the card drum has a particularly advantageous effect that the holes which arise in the nonwoven fabric as a result of the separation are healed again.
  • the card sliver produced on the card therefore shows only slight fluctuations in number. If a sensor system is arranged both on the breeze and on the card drum, it can be checked in the repeated circulation of the individual fibers or foreign matter whether the foreign matter has actually been cleaned out. If this is not the case, the sensor system arranged on the card drum can become active again and generate a signal for cleaning.
  • the alternative or additional arrangement of the sensors on the breeze means that the foreign matter can be removed with the card drum during the first circulation and thus does not interfere with the carding process or, if necessary, removed from the card drum during the first circulation and fed to the card sliver becomes.
  • the sensor system is arranged on the last breeze in front of the card drum, there is already a relatively uniform non-woven fabric on which the foreign matter can be determined relatively easily.
  • the sensor system and / or the separating device can be arranged on the lower carding zone, on the pre-carding zone or on the post-carding zone of the card drum.
  • the first possibility is to record or remove the foreign matter when it has reached the card drum. The foreign matter, if it is already removed here, can least disturb the carding process.
  • the sensor system and / or the separating device is arranged on the post-carding zone of the card drum, a final check of the nonwoven with regard to foreign matter can take place here. If foreign substances are still found here, they can be removed before they reach the card sliver.
  • the sensor system and the separating device are at a distance of at least 400 mm in the transport direction of the fiber material. If a signal is generated by the sensor system, the separating device advantageously reacts at exactly the point in time at which the determined foreign substance is in the area of the separating device. At a distance of at least 400 mm, the separation device is able to remove the foreign matter due to transport speeds of approximately 30 m / s.
  • a particularly efficient adaptation of the excretion pulse to the foreign substance to be excreted can be achieved if the sensor system generates a signal depending on the size and / or mass of the foreign substance and if the duration and / or intensity of the pulse is controlled depending on this signal. For example, a small and relatively light plastic part only needs a brief pulse of low intensity, while a flat and heavier piece of leather requires a longer and more intense pulse due to its size and mass.
  • the separating device has at least one nozzle, which brings an active medium to the contaminated subset of the fiber material or the foreign substance, essentially transversely to the direction of movement of the fiber material, then a targeted removal of the foreign substance from the fiber material is very easily possible. In addition, a very rapid reaction of the separation device to a signal from the sensor system is to be brought about.
  • the entire width of the card drum can be kept free of foreign substances with a relatively small-sized separating device.
  • Figure 1 shows a card in a schematic representation
  • Figure 2 shows the device according to the invention in the area of the breeze and the front and lower carding zone
  • FIG 3 shows the device according to the invention in the area of the pre-carding zone
  • FIG 4 shows the device according to the invention in the area of the postcarding zone.
  • FIG. 1 shows the schematic representation of a card 1.
  • Flocks of card 1 are fed into a flock filling shaft 2.
  • the flakes arrive in the lower area of the flake filling shaft 2 to beaters 3, 3 'and 3 "of the card 1.
  • the three beaters 3, 3' and 3" even out the fiber flakes.
  • the last breeze 3 "transfers the roughly parallelized fibers to a carding drum 4.
  • the carding drum 4 works together with lids 5 and thereby parallelizes the fibers even further Take-off roller 7 removed from the card drum 4, fed to scraper rollers 8 and finally filled as a card sliver 9 in a can 10 in a can.
  • With the card drum 4 the fibers pass through a pre-carding zone 12 which is located in front of the lids.
  • the fibers are then in a post-carding zone 13.
  • Individual fibers finally pass through a lower carding zone 14, which again feed the fibers to the pre-carding zone and the covers 5 and the post-carding zone 13.
  • FIG. 2 shows an enlarged section of the card drum 4 and of the engravers 3, 3 'and 3 ".
  • a sensor 15 which is the fiber material which is on the beater 3 " and is conveyed by the latter in the direction of the card drum 4.
  • the sensor 15 determines whether there is foreign material in the fiber material.
  • the sensor 15 sends a signal to a control device (not shown), which causes a time delay Separation device 16 is activated.
  • the sensor system 15 can be a CCD camera, for example, which recognizes color or structure differences in the fiber material transported on the Briseur 3 "and identifies it as a foreign substance.
  • the separating device 16 can, for example, be a suction device, which is advantageously punctiform on the carding drum 4. As a result, only in the area in which the sensor system 15 has detected a foreign substance is the nonwoven fabric, which is located on the card drum 4, suctioned off together with the foreign substance.
  • the suction device 16 only acts selectively, the entire width of the card drum 4 is not vacuumed and cleaned, but only the area in which the foreign matter is located. Good fibers are thus largely left on the card drum 4.
  • a blowing device can also be provided here, with which the foreign substances are lifted from the card drum 4 and detached and then fed to a waste container become.
  • a combination between suction and blowing device or also a brushing device or a knife, which is inserted into the nonwoven fabric at a suitable time, can be used.
  • the separating device acts only in regions over the width of the card drum 4, so that only the region in which foreign substances have been found is cleaned.
  • the sensor system 15 also extends over the entire width of the breeze 3 "and determines the exact location of the foreign substance with respect to the axis of the breeze 3" and signals this further to the separating device 16.
  • the exemplary embodiment according to FIG. 3 shows the sensor system 15 and the separating device 16 each arranged in the pre-carding zone 12. In this area there is a relatively thin non-woven fabric on the card drum 4 and is therefore easy to examine by the sensor system 15. Foreign substances that differ from the good fibers can therefore be rik 15 detected and signaled to the separating device 16 with a time delay.
  • a sensor system 15 is arranged immediately after the lids 5 on the card 1 in order to examine the carded fiber material for foreign substances. As soon as a foreign substance has been detected, a signal is sent to the separating device 16, as a result of which an overpressure is generated in the line 17. Due to the overpressure in the line 17, an air or fluid flow is applied to a nozzle arranged at the end of the line 17, with which the fibers and the foreign material are lifted out of the card drum 4. Immediately after the compressed air nozzle, a suction device 18 is provided, with which this removed material is suctioned off. Instead of or in addition to the suction device 18, a knife or another mechanical device can be provided, which is introduced into the fiber stream and lift off and dispose of the foreign material from the nonwoven fabric, which is in contact with the card drum 4.
  • the exemplary embodiments shown only show some of the possibilities which are opened up by the invention.
  • the sensor system as well as the separating device can be arranged several times on the card or can also be arranged at different points. It is also entirely possible that the sensor system and the separating device are further apart than in the exemplary embodiments shown here.
  • the sensors can be arranged in the pre-carding zone and the dispensing device in the post-carding zone. In individual cases, this could have the advantage that the reaction time of the separating device to the foreign substances found is increased and thus a more targeted disposal of the foreign substances can take place.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

L'invention concerne une carde (1) présentant un tambour cardeur (4) et au moins un briseur (3, 3', 3'') en amont par rapport au tambour cardeur. Dans le cas d'un procédé destiné à identifier et à retirer des matières étrangères d'un matériau fibreux, le matériau fibreux est surveillé par au moins un détecteur (15) qui réagit aux matières étrangères. Un dispositif de séparation (16), implanté en amont par rapport au sens de déplacement du matériau fibreux, piège les quantités partielles souillées du matériau fibreux ou les matières étrangères dans la zone du briseur (3, 3', 3'') et/ou du tambour cardeur (4) et les retire sur le tambour cardeur (4). A cet effet, le détecteur (15) est implanté sur le briseur (3, 3', 3'') et/ou le tambour cardeur (4), et le dispositif de séparation (16) est implanté sur le tambour cardeur (4).
PCT/EP2002/001629 2001-02-22 2002-02-15 Procede et dispositif place sur une carde destines a identifier et a retirer des matieres etrangeres d'un materiau fibreux Ceased WO2002068740A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01104274A EP1234901A1 (fr) 2001-02-22 2001-02-22 Procédé et appareil pour détecter et éliminer des corps étrangers dans une matière fibreuse, en particulier du coton brut
EP01104274.4 2001-02-22

Publications (1)

Publication Number Publication Date
WO2002068740A1 true WO2002068740A1 (fr) 2002-09-06

Family

ID=8176564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/001629 Ceased WO2002068740A1 (fr) 2001-02-22 2002-02-15 Procede et dispositif place sur une carde destines a identifier et a retirer des matieres etrangeres d'un materiau fibreux

Country Status (2)

Country Link
EP (1) EP1234901A1 (fr)
WO (1) WO2002068740A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233011A1 (de) * 2002-07-20 2004-01-29 Trützschler GmbH & Co KG Vorrichtung an einer Spinnereimaschine wie Karde,Krempel, Reiniger o. dgl. zur Erfassung und Beurteilung von Textilfasermaterial

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271565A (en) * 1978-04-26 1981-06-09 Zellweger Uster, Ltd. Method and apparatus for regulating out variations in the sliver weight on devices for processing fibre slivers
DE4322345A1 (de) * 1992-08-24 1994-03-03 Jossi Hans Praezisionsmechanik Verfahren und Vorrichtung zum Ausscheiden von Metallteilen aus einem Materialstrom
DE19627194A1 (de) * 1995-09-25 1997-03-27 H J Scheinhuette Entwicklungen Karde mit Vorrichtung zum Ausscheiden von Fremdfasern
EP0775767A1 (fr) * 1995-11-22 1997-05-28 Hubert Dipl. Ing.-Dipl. Wirt. Ing. Hergeth Procédé pour enlever sélectivement des corps étrangers au niveau du cylindre d'ouverture ou du peigneur d'une machine textile
EP0989214A1 (fr) * 1998-09-07 2000-03-29 Jossi Holding AG Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657144A (en) * 1985-02-25 1987-04-14 Philip Morris Incorporated Method and apparatus for detecting and removing foreign material from a stream of particulate matter
US5383135A (en) * 1992-12-31 1995-01-17 Zellweger Uster, Inc. Acquisition, measurement and control of thin webs on in-process textile materials
DE19516568A1 (de) * 1995-05-05 1996-11-07 Truetzschler Gmbh & Co Kg Vorrichtung in einer Spinnereivorbereitungseinrichtung (Putzerei) zum Erkennen und Ausscheiden von Fremdstoffen, z. B. Gewebestücke, Bänder, Schnüre, Folienstücke, in bzw. aus Fasergut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271565A (en) * 1978-04-26 1981-06-09 Zellweger Uster, Ltd. Method and apparatus for regulating out variations in the sliver weight on devices for processing fibre slivers
DE4322345A1 (de) * 1992-08-24 1994-03-03 Jossi Hans Praezisionsmechanik Verfahren und Vorrichtung zum Ausscheiden von Metallteilen aus einem Materialstrom
DE19627194A1 (de) * 1995-09-25 1997-03-27 H J Scheinhuette Entwicklungen Karde mit Vorrichtung zum Ausscheiden von Fremdfasern
EP0775767A1 (fr) * 1995-11-22 1997-05-28 Hubert Dipl. Ing.-Dipl. Wirt. Ing. Hergeth Procédé pour enlever sélectivement des corps étrangers au niveau du cylindre d'ouverture ou du peigneur d'une machine textile
EP0989214A1 (fr) * 1998-09-07 2000-03-29 Jossi Holding AG Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233011A1 (de) * 2002-07-20 2004-01-29 Trützschler GmbH & Co KG Vorrichtung an einer Spinnereimaschine wie Karde,Krempel, Reiniger o. dgl. zur Erfassung und Beurteilung von Textilfasermaterial
US7173703B2 (en) 2002-07-20 2007-02-06 Trutzschler Gmbh & Co. Kg Apparatus on a textile fibre processing machine for evaluating textile fibre material
DE10233011B4 (de) * 2002-07-20 2020-03-19 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereimaschine zur Erfassung und Beurteilung von Textilfasermaterial

Also Published As

Publication number Publication date
EP1234901A1 (fr) 2002-08-28

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