EP1000186A1 - Procede mis en oeuvre lors de la production de fil ayant subi un traitement de compacite et dispositif correspondant - Google Patents

Procede mis en oeuvre lors de la production de fil ayant subi un traitement de compacite et dispositif correspondant

Info

Publication number
EP1000186A1
EP1000186A1 EP99936352A EP99936352A EP1000186A1 EP 1000186 A1 EP1000186 A1 EP 1000186A1 EP 99936352 A EP99936352 A EP 99936352A EP 99936352 A EP99936352 A EP 99936352A EP 1000186 A1 EP1000186 A1 EP 1000186A1
Authority
EP
European Patent Office
Prior art keywords
hairiness
yarn
yarns
sensor
compacted
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.)
Granted
Application number
EP99936352A
Other languages
German (de)
English (en)
Other versions
EP1000186B1 (fr
Inventor
Andreas Olbrich
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7869317&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1000186(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Publication of EP1000186A1 publication Critical patent/EP1000186A1/fr
Application granted granted Critical
Publication of EP1000186B1 publication Critical patent/EP1000186B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D01H13/32—Counting, measuring, recording or registering devices
    • 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

Definitions

  • the invention relates to a method in the production of compacted yarn, in particular for monitoring the function of compacting, and to devices which can be used in such a method.
  • a compressed yarn is understood to mean a yarn in which, prior to the twisting of the fiber sliver, from which the finished yarn is formed by turning, usually in particular projecting edge fibers are applied to the fiber sliver by means of an air stream directed against the center of the fiber sliver, but also the Packing density of the fibers in the fiber sliver itself is increased. This in particular reduces the hairiness of the yarn produced, but also improves other quality parameters of the yarn, such as the increased use of substances by better incorporation of the fibers and thus the strength of the yarn.
  • Hairiness of a yarn is understood here to mean both the number of fibers protruding from the yarn produced and their protruding length. Hairiness is both inevitable with staple fiber yarns and indispensable for the textile character of the yarns. However, excessive hairiness is undesirable. It reduces the tensile strength of the yarn because the protruding fibers do not contribute to this; it causes breakage of the protruding fibers during the processing of the yarn and thereby weight loss of the yarn and annoying fiber fly; it affects a smooth product appearance of a fabric made from the yarn (woven, knitted), etc. Sometimes yarns or Flat structures are even freed of protruding fibers by singeing.
  • undesirable fibers are particularly undesirable.
  • the following are used to describe hairiness
  • Fibers are usually divided into length classes of their protruding lengths of, for example, two to two millimeters.
  • the length classes up to 4 mm m are as a rule both for the textile character of the
  • Yarns are desirable and cannot be avoided by compression spinning.
  • length classes from 6 mm to 8 mm, for example
  • Difference can serve to distinguish densely spun yarn from spun yarn that is normally or incorrectly not compacted.
  • Densified yarn can be produced, for example, by exposing the fiber sliver emerging from the pair of exit rollers of a drafting system, for example a ring spinning machine of a certain width, to an air flow which is directed transversely to the yarn and which forces the fibers, particularly in the edge region of the fiber sliver, towards their center.
  • a drafting system for example a ring spinning machine of a certain width
  • a large number of devices have become known for compressing yarns or fiber slivers to be processed into yarn. Hollow suction rolls with circumferential perforations in the shape of a line of small suction openings have been proposed. Flexible, revolving, standing under suction Rie chen with the perforation are known.
  • the method according to the invention and the device according to the invention are independent of the type of compression device, i.e. they can be implemented with different compression devices.
  • Such compression devices sometimes fail. In particular, it can happen that the induced draft does not apply because For example, the pipeline transmitting the suction to the compression device is blocked or the suction openings of the perforation are blocked. Compression slips can break. The fiber sliver can run out of the effective area of the suction traction, etc. Such errors are inconspicuous and are therefore often not discovered for a very long time, so that yarn that is not compressed and thus defective is produced for a long time.
  • the object of the invention was accordingly to detect and report a failure of the compression effect. It solves this task procedurally by the features mentioned in the characterizing part of claim 1. Because the achievement of the intended effect, namely the reduced hairiness of the yarn produced, is checked and monitored, the monitoring of this single parameter not only covers all possible causes which can cause the compacting to fail, but also already Slacken and not notice a complete failure of the compaction.
  • the invention has recognized that the effect of the compression of a yarn or a fiber sliver preferably has an effect on protruding fibers with a greater protruding length, and a detection of the number of such fibers accordingly represents a particularly clear indication of the lack of a compression effect. It is therefore preferably provided to check and monitor the compaction effect on the basis of the hairiness caused by long protruding fibers. In this case, it is preferable to proceed in such a way that a tolerable number of protruding fibers of, for example, 6 to 8 mm protruding length is specified on a specific yarn length, the number of such fibers occurring is detected and an error signal is emitted when the predetermined limit value is exceeded.
  • Checking and monitoring hairiness can also be done at various points in the treatment of the yarn.
  • the yarn can be checked directly at the spinning point at the exit from the drafting system, after winding on the bobbin or at a downstream point, for example when rewinding.
  • Detecting the hairiness at the spinning position has the advantage that, in the absence of the compaction effect, it is possible to intervene immediately at the work location in question and the production of faulty yarn is immediately prevented.
  • a check of the yarn at the spinning station also eliminates the need for precautions by means of which a yarn can be assigned to a spinning station from which it has meanwhile been removed. It can be provided that each work station is equipped with a sensor.
  • Detecting the hairiness at a subsequent processing stage of the yarn also has the advantage that the throughput speed of the yarn there is generally significantly higher than at a spinning position and the utilization of the device accordingly is higher or a smaller number of such devices is required. As such a subordinate processing point ospw. the winding of the yarn from the spinning bobbins to packages.
  • the checking and monitoring of the hairiness on the cop is advantageously carried out on a device handling the cops, on which the cops are required and can be guided past a hairiness sensor.
  • Another advantageous possibility of checking and monitoring the hairiness consists in moving a hairiness checker along the row of the spinning or rewinding points of the yarn or the cops on the spindles of the ring spinning machine. A large number of yarns or cops can be checked and monitored with just one hairiness sensor.
  • a signal is emitted, by means of which an intervention in the manufacturing process is made possible.
  • the signal can give a warning that allows manual intervention by an operator.
  • the signal can also intervene directly, for example by stopping the incorrectly operating spinning station and thus preventing the production of further defective material.
  • a device by means of which the method according to the invention can be carried out has the components listed in the characterizing part of claim 10.
  • the hairiness sensor can be designed so that it detects the length and number of protruding fibers or only the number of protruding fibers of a minimum length and passes them on to the control device as a signal.
  • the control device is designed in such a way that it sorts the incoming signals according to length classes and determines these frequencies.
  • the control device is also provided with a device for recognizing the exceeding a limit of the detected protruding fibers in a length class.
  • the checking and monitoring of the hairiness is carried out on a downstream device that processes the yarns, for example a winder or on a cop removed from the spinning station, by arranging hairiness sensors there or by guiding them there, or when cops are passed by a hairiness sensor Precautions are taken that make it possible to assign an error signal that has occurred to the spinning station from which this yarn or cop comes.
  • a downstream device that processes the yarns
  • the yarns for example a winder or on a cop removed from the spinning station, by arranging hairiness sensors there or by guiding them there, or when cops are passed by a hairiness sensor
  • Precautions are taken that make it possible to assign an error signal that has occurred to the spinning station from which this yarn or cop comes.
  • This can be done by providing yarn carriers, for example copellers carrying yarn cores or spinning heads, with a spinning station-related coding, by means of which the spinning station from which a yarn originates can be identified.
  • a device that can be used for this is known, for example,
  • FIG. 1 shows the cross section through one side of a ring spinning machine
  • Figure 2 shows the floor plan of a spinning system with ring spinning machine and winding machine
  • Fig. 3 shows the view of a cop on a copeller.
  • the invention is described below in application to a ring spinning machine and to a winding machine. However, their use is not restricted to these machines, but rather can be implemented in conjunction with any other devices and machines which manufacture or process compacted yarns.
  • roving bobbins 2 from which roving 3 runs, drafting system 4 with three pairs of rollers 5, 6 and 7, and ring spinning device 8 with thread guide 9, ring bench 10 with ring and rotor, and spindle 11 with the attached cop 12.
  • the ring spinning machine 1 has a sliver stop device 13, which can be of any type. It is assumed that the known sliver stop device 13, which is therefore not shown in detail, is designed as a half-shell which partially encompasses the lower roller of the input roller pair 5 of the drafting device 4 and which is pivoted about this lower roller to interrupt the feed of roving, thereby lifting the upper roller of the roller pair thus interrupting the further supply of roving to the drafting system.
  • the ring spinning machine 1 has a compacting device 14 in the form of a suction lower roller 15 at the outlet of the drafting device 4, to which an upper roller 16 is assigned.
  • a compacting device 14 in the form of a suction lower roller 15 at the outlet of the drafting device 4, to which an upper roller 16 is assigned.
  • other compression devices are also known - the present invention is not tied to a compression device of a specific embodiment.
  • a hairiness sensor 17 is arranged, through which the yarn 18 passes and in which the hairiness of the yarn produced is detected.
  • the measurement signal of the hairiness sensor 17 corresponding to the determined hairiness is fed to a control device 20 via a measurement value line 19.
  • the incoming signal is compared with a permissible limit value for hairiness that is predefined for the control device. This comparison is based on the number of protruding fibers m of a certain length class of, for example, 6 mm to 8 mm. This differentiation can take place in the hairiness sensor 17, in that it is designed to be sensitive only to protruding fiber lengths of this length class. However, it is also possible to arrange protruding fiber lengths m length classes m of the control device 20.
  • the control device 20 can emit an actuating signal to the match stop device 13 via the control line 21, which triggers it. This initially prevents further production of defective yarn.
  • the control device 20 can, however, also emit an alarm signal to a warning device such as a warning lamp 23 instead of the control signal or in addition to this via a signal line 22, by the lighting of which the operator is made aware that defective yarn with excessive hairiness at a work site is delivered.
  • This warning signal offers the operator the opportunity to check the function of the compression device 14 and, if necessary, to restore it.
  • each work station 24 of a winding machine 25 in which the yarn 18 m is wound into cross-wound bobbins 18 m in a more common and therefore not shown and described manner here, with a hairiness sensor 17 for detecting the hairiness of each in a work station rewound yarn 18 equipped.
  • the measured values of these hairiness sensors 17 are supplied to the control device 20, for example, in the bus system via a collecting line 26. There they will be compared with the limit value specified for the control device 20. If this is exceeded, a warning signal can be issued by which the operator is made aware that faulty yarn is running at the relevant work station 24 of the winding machine 25 and so that it can intervene.
  • the scanning of the heads 12 for hairiness can advantageously be carried out on this transport device.
  • transport devices have an endless traction member 29, which is guided around deflecting rollers 28 and has carriers, by means of which copellers 30 shown in FIG. 3 can be conveyed around the ring spinning machine 1, to which a common cop changing device of any embodiment can be used the spin-dein 11 stripped heads 12 are attached.
  • a hairiness sensor 17 ' which is connected to the control device 20, can be arranged on the transport device 27 rotating in the direction of the arrow P at a point where all the heads 12 pass, which is connected to the control device 20.
  • the operation of all spinning positions associated with the transport device 27 can be monitored with only one hairiness sensor 17 '.
  • this assignment can be carried out by automatically counting the number of hairiness sensors posed cops.
  • the control device 20 can then show ⁇ that the xth cop that comes from the yth spinning position, an error signal has occurred.
  • the cops 12 at the end of the ring spinning machine 1 are often converted in a conversion device 31 to other copellers 30, which are transported to the work stations 24 of the winding machine 25 by means of a further transport device 32.
  • the copellers 30 with the cop sleeves spooled empty in the winding machine 25 run back to the transfer device 31 and are there again converted to the copellers 30 to be reclaimed to the ring spinning machine 1 by means of the transport device 27.
  • the conversion device 31 is generally equipped with a marking device 33 which, on data carriers provided on the copellers 30, for example in the form of optically readable bar codes 34, notes the serial number of the spindle 11 of the Rmgspmn-maschme 1, of which the m the order of the spindles supplied cops come from each. It goes without saying that the spindle numbers can also be held on data carriers which are arranged on the sleeves of the cops 12 or that electronically readable data carriers can also be used.
  • the control device 20 can also automatically cause the number of the spindle in question to be read from the copeller or the head pulse and, for example, to be shown on a display of the control device.
  • the work stations 24 of the spool scanners are equipped with devices (not shown in more detail) for reading the spool number recorded on a copeller 30 or the Kopshulse from which the processed cop originates. This gives the operator the opportunity, in particular the compacting device 14, of this work station of the ring spinning machine 1 check and restore their possibly faulty function.
  • control device 20 to generate an actuating signal from the error signal of the hairiness sensor 17 'and the spindle number and to forward it to the ring spinning machine 1, by means of which an arrangement, which is described in connection with the embodiment described above, is arranged at the addressed work station Match stop device 13 can be automatically released.
  • a compression device The failure of a compression device is a serious error on the one hand, but a comparatively rare error on the other hand. It is therefore sufficient in many cases not to constantly monitor all running yarns of a yarn-producing or a yarn-processing device such as a ring spinning machine or a winder by means of a hairiness sensor.
  • a hairiness sensor 17 "patrols on an endless tension member 35 as indicated in FIG.
  • control device 21 control line

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un procédé permettant de reconnaître automatiquement, d'indiquer et éventuellement d'empêcher automatiquement un dysfonctionnement de dispositifs de traitement de compacité (14) servant à produire des fils ainsi traités sur des métiers à filer. A cet effet, la pilosité des fils produits (18) est contrôlée au moyen de palpeurs de pilosité (17) et, lorsqu'une valeur limite de cette pilosité, affectée à une unité de commande (20) est dépassée, cette même unité de commande émet un signal d'arrêt et/ou d'alerte. Le nombre des fibres saillantes particulièrement longues pouvant varier de manière importante entre des fils ayant subi un traitement de compacité et des fils non traités, le nombre des fibres saillantes, d'une classe de longueur supérieure, est sélectionné comme critère du dysfonctionnement d'un dispositif de traitement de compacité.
EP99936352A 1998-05-29 1999-05-31 Procede mis en oeuvre lors de la production de fil ayant subi un traitement de compacite et dispositif correspondant Expired - Lifetime EP1000186B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19824078A DE19824078C2 (de) 1998-05-29 1998-05-29 Verfahren beim Herstellen von verdichtetem Garn und Einrichtung hierfür
DE19824078 1998-05-29
PCT/DE1999/001583 WO1999063139A1 (fr) 1998-05-29 1999-05-31 Procede mis en oeuvre lors de la production de fil ayant subi un traitement de compacite et dispositif correspondant

Publications (2)

Publication Number Publication Date
EP1000186A1 true EP1000186A1 (fr) 2000-05-17
EP1000186B1 EP1000186B1 (fr) 2002-11-06

Family

ID=7869317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99936352A Expired - Lifetime EP1000186B1 (fr) 1998-05-29 1999-05-31 Procede mis en oeuvre lors de la production de fil ayant subi un traitement de compacite et dispositif correspondant

Country Status (4)

Country Link
EP (1) EP1000186B1 (fr)
JP (1) JP4484187B2 (fr)
DE (2) DE19824078C2 (fr)
WO (1) WO1999063139A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2275550A2 (fr) 2001-12-03 2011-01-19 University of Florida Research Variantes de ADP-Glucose pyrophosphorylase affectant la sensibilité au phosphate et autres paramètres

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001051397A1 (fr) * 2000-01-14 2001-07-19 Zellweger Luwa Ag Procede pour detecter les caracteristiques de qualite d'un fil
DE10145671A1 (de) * 2001-09-11 2003-03-27 Rieter Ag Maschf Verfahren und Vorrichtung zum pneumatischen Verdichten eines Faserverbandes
DE10237999A1 (de) * 2002-08-15 2004-02-26 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Ringspinnmaschine und Ringspinnmaschine
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
WO2013084748A1 (fr) * 2011-12-07 2013-06-13 株式会社アライドマテリアル Alliage de tungstène fritté
JP2013249190A (ja) * 2012-06-04 2013-12-12 Murata Machinery Ltd 糸巻取装置
DE102012013574A1 (de) * 2012-07-06 2014-05-22 Saurer Germany Gmbh & Co. Kg Streckwerk für eine Spinnmaschine
CN103938316B (zh) * 2014-04-22 2017-05-03 东华大学 一种用于匀整环锭纺细纱毛羽的装置及方法

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US3712743A (en) * 1971-01-05 1973-01-23 Eastman Kodak Co Apparatus for detecting and measuring yarn defects and irregularities
DE3028453A1 (de) * 1980-07-26 1982-03-18 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Spinnmaschine
DE3641816A1 (de) * 1986-12-06 1988-06-16 Robert Prof Dr Ing Massen Verfahren und anordnung zur messung und/oder ueberwachung von eigenschaften von garnen und seilen
DE3720835A1 (de) * 1987-06-24 1989-01-05 Hoechst Ag Verfahren und vorrichtung zur qualitaetsbestimmung an laufenden garnen
DE3912030A1 (de) * 1989-04-12 1990-10-25 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zum zuordnen qualitaetsbezogener daten auf mit kopsen bestueckten spulentraegern in einem maschinensystem
CH684129A5 (de) * 1992-06-18 1994-07-15 Zellweger Uster Ag Verfahren und Vorrichtung zur Beurteilung der Auswirkung von Garnfehlern auf Gewebe oder Gewirke.
DE4438885B4 (de) * 1994-10-31 2004-08-26 Trützschler GmbH & Co KG Vorrichtung zur Messung der Stärke eines Faserverbandes an einer regulierenden Strecke

Non-Patent Citations (1)

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Title
See references of WO9963139A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2275550A2 (fr) 2001-12-03 2011-01-19 University of Florida Research Variantes de ADP-Glucose pyrophosphorylase affectant la sensibilité au phosphate et autres paramètres

Also Published As

Publication number Publication date
WO1999063139A1 (fr) 1999-12-09
JP2002517617A (ja) 2002-06-18
DE19824078C2 (de) 2001-05-31
DE59903309D1 (de) 2002-12-12
JP4484187B2 (ja) 2010-06-16
DE19824078A1 (de) 1999-12-09
EP1000186B1 (fr) 2002-11-06

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