US20050173579A1 - Device and method for feeding an elastomeric yarn to a textile machine - Google Patents

Device and method for feeding an elastomeric yarn to a textile machine Download PDF

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Publication number
US20050173579A1
US20050173579A1 US10/508,421 US50842105A US2005173579A1 US 20050173579 A1 US20050173579 A1 US 20050173579A1 US 50842105 A US50842105 A US 50842105A US 2005173579 A1 US2005173579 A1 US 2005173579A1
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United States
Prior art keywords
yarn
speed
textile machine
tension
fed
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Abandoned
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US10/508,421
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English (en)
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Tiziano Barea
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Individual
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/12—Indicating, warning, or safety devices, e.g. stop motions responsive to thread consumption
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D04B15/50—Thread-feeding devices for elastic threads

Definitions

  • the present invention relates to a device for feeding an elastomeric yarn to a textile machine with the aim of obtaining an article of constant quality in all its parts, in accordance with the introduction to the main claim.
  • the present invention also relates to a method implemented by said device in accordance with the introduction to the corresponding independent claim.
  • yarn feeders are used basically for feeding yarn to the textile machine under conditions either of “constant quantity” or of “constant tension”.
  • the first are composed of mechanical members or electronic actuators, electric motors of various kind able to feed the yarn at a speed synchronized with the operative speed of the textile machine in each of its productive stages. In this manner the parameter relative to the “quantity of yarn” fed during the productive process is maintained constant in each of said operative stages, the machine hence operating under “constant quantity” tension feed conditions.
  • These devices are also used to feed an elastomeric yarn for example in large diameter circular knitting machines; such devices are composed of a pulley synchronized with the main transmission shaft of the textile machine by means of a belt, the elastomeric yarn resting on said pulley which by rotating enables the yarn fed to the textile machine to be unwound in a controlled manner.
  • Other devices of this type are for example those used to feed a controlled quantity of elastomeric yarn during its processing within a circular textile machine for producing stockings, tights etc. These devices normally use a yarn feed roller or pulley operated by electric motors synchronized with the rotational speed of the cylinder of the textile machine, to ensure a yarn feed of controlled or variable quantity depending on the processing stage reached.
  • These devices are composed of a yarn tension sensor connected to a measurement and processing circuit, able to provide “closed-loop” control of a motor acting on a roller or pulley operating directly on the yarn in order to feed it under “constant tension” feed conditions.
  • Such a device is known, for example, from EP950742 relating to a device for controlling the feed of a yarn fed to a textile machine such as a knitting machine, stocking machine or a bobbin winder; the yarn possesses an intrinsic tension and is fed to the machine with an intrinsic speed, means being provided for sensing this tension and means for measuring this speed.
  • the sensing and measuring means are both associated with the body of the device and are both connected to control and regulator means for said tension and speed parameters, these control and regulator means continuously measuring the values of both said parameters during the yarn feed to the textile machine and comparing at least one of them with a predetermined homogeneous datum in order to also establish with precision the value of the other parameter.
  • speed measurement means are associated with motor means enabling the speed of the fed yarn to be modified on the basis of the sensed tension value, said motor means being the textile machine with which the rotary member is associated via known mechanical transmission members.
  • motor means are connected to the control means defined by a microprocessor unit, this latter being connected to the textile machine control member, by which it operates on the motor means acting on the speed measurement means.
  • these devices represent a considerable forward step with regard to the quality of the fabric or article produced by the textile machine to which they are applied, they can no longer be considered as sufficient for satisfying the requirement for continuous increase in the quality of the textile article produced by elastomeric yarn.
  • said devices feed the yarn at constant tension and are hence able to react actively to any variation in the tension of the yarn unwinding from the bobbin, they are not able to ensure an effective “constant quantity” because of the elongation of the yarn as a function of its bobbin unwinding tension.
  • an elastomeric yarn originating from a yarn bobbin which is still full has an unwinding tension less than and hence an elongation less than an elastomeric yarn originating from a yarn bobbin which is at least partly empty.
  • GB2162971 Another device of the aforesaid type is described in GB2162971 which relates to a device for feeding a yarn to a textile machine such as a knitting machine, a loom or the like.
  • This device comprises a yarn feed member controlled by an electric guide motor of controlled speed, said speed being controlled by an output signal which controls the speed of movement of the yarn.
  • the speed of the guide motor is synchronized with said output signal, representative of the yarn feed speed.
  • Tensioning means are provided to automatically maintain the yarn tension at a preselected value.
  • An object of the present invention is therefore to provide an improved device and method for feeding an elastomeric yarn to a textile machine with the aim of obtaining an article of excellent and constant quality.
  • FIG. 1 is a front view of the device according to the invention.
  • FIG. 2 is a side view of a part of the device according to the invention.
  • FIG. 3 is a block diagram of one embodiment of the method of the invention.
  • FIG. 4 is a flow diagram showing one stage in the method of the invention.
  • FIGS. 1 and 2 show a device 1 for feeding an elastomeric yarn 11 at “constant tension” to a textile machine 10 .
  • This device indicated by DTC in FIG. 4 , comprises a body 2 (for example box-like). With this body there are associated a grooved wheel or pulley 3 associated with an actuator (not shown) for its movement.
  • This actuator can be an electric motor (for example of brushless type) associated with that face of the body 2 opposite the face 6 on which the pulley 3 is present.
  • Such a device 1 is associated with each elastomeric yarn 11 fed to the machine, said yarn unwinding from a bobbin B and winding one or more times about the pulley 3 .
  • This pulley is directly or indirectly connected to a member 12 which measures its rotation and hence the speed of this rotation.
  • This member can be a magnetic sensor 13 associated with the body 2 and cooperating with a magnet 15 associated with the pulley or a known Hall sensor associated with the motor (brushless motor with a Hall sensor incorporated) which provides the movement of the pulley 3 .
  • the body 2 also supports, a member 18 for measuring the tension of the yarn 11 directed to the machine 10 ; this member is of known type and can comprise a usual magnetic sensor, a piezoelectric sensor, a load cell, an elastically supported armlet or another known sensor.
  • the tension sensing member 18 , the measurement member 13 for the rotational speed of the pulley and the motor connected to this latter are connected to a unit 20 for controlling and regulating the feed of the yarn 11 to the textile machine 10 .
  • this unit 20 is associated with the device 1 (inserted into its body 2 ) and is able, via the connection to said measurement members, to measure correctly and precisely the quantity of yarn (in metres per minute) fed to the machine, using evaluation algorithms which consider both the measured tension of the yarn 11 and the speed of rotation of the pulley.
  • the unit 20 for example of microprocessor type, there are connected usual setting members associated with the body 2 ; these members are an interface keypad 22 or usual potentiometers 23 connected to the unit.
  • a member 30 for compensating the variation in elongation of the elastomeric yarn 11 having known elastic characteristics.
  • This member 30 is able to compensate the physical variation in the diameter of the yarn 11 as the diameter of the bobbin from which it unwinds decreases, and to maintain its elongation, and hence the quantity of yarn fed to the textile machine 10 , constant.
  • the member 30 comprises a wheel means 31 supported laterally by an actuator 33 , for example electrical (such as an electric motor for example of brushless type or similar) or air operated, which rotates it about its axis.
  • This wheel means presents a groove 31 A in which the yarn 11 is wound and acts as a braking member or a member for feeding the yarn to the DTC device 1 .
  • the actuator 33 is connected (see FIG. 3 ) to a control unit such as a microprocessor 34 (for example associated with said motor as in FIG. 2 ) connected to the unit 20 of said device.
  • the unit 20 and the unit 34 exchange data relative to the speed at which the yarn 11 is fed to the textile machine 10 , to enable the speed of the wheel means 31 to be varied so as to induce a corresponding correction to the speed of the yarn leaving the device 1 (via the pulley 3 ) and then to maintain the speed of the yarn 11 or the quantity of said yarn fed to the machine 10 constant.
  • the unit 20 can also cooperate with a control unit 27 for the textile machine 10 .
  • the wheel means 31 either brakes or feeds more yarn to the device 1 on the basis of a desired set yarn speed (or quantity) (indicated by SPV in FIG. 4 ).
  • This setting can be in the form of:
  • the method of the invention operates in accordance with the following procedure: after start-up (block 40 ), the yarn feed speed is measured (block 41 ) by the DCT device 1 ; the speed (SPV for example equal to 50 m/min) set in the unit 34 (block 42 ) is compared with the measured speed. If the yarn feed speed via the DCT device 1 is greater than the speed SPV, the unit 34 acts on the wheel means 31 to decrease the amount of yarn braking (block 43 ) and draw more yarn 11 from the bobbin B so that the DCT device operates at the speed set in the unit 34 with its own pulley 3 .
  • the unit 34 controlling the wheel means 31 increases the amount of braking of the yarn 11 (block 44 ). These braking increase/decrease adjustments by the wheel means 31 and consequently by the pulley 3 are repeated until the DCT device 1 , which is feeding the yarn 11 at “constant tension”, has been compelled to attain a yarn feed speed equal to the speed set and programmed in the unit 34 .
  • the speed value SPV can be varied in relation with the operative stage achieved by the textile machine, in order to obtain a variable yarn pretension value based on the processing point.
  • DTC device 1 could easily accommodate the member 30 of the present invention, hence advantageously forming a single device for yarn feed at “constant tension and quantity”.
  • the yarn pre-feed actuator or wheel means 31 could be of different form than that described: for example in the form of a known braking device, or a pulley or roller directly or indirectly keyed onto the shaft of the actuator 33 to act on the pre-feed so that more or less yarn is fed, with the purpose of compelling the DCT device 1 to feed the elastomeric yarn at “constant tension and quantity”.
  • a device for feeding an elastomeric yarn to a textile machine which acts on the yarn before it passes to the textile machine, such that the elastic characteristics of the yarn do not influence or cannot be seen to influence the production of the article.
  • the device of the invention with a member for compensating the variation in the diameter and elongation of the elastomeric yarn before it cooperates with a known device for feeding this yarn at constant tension and quantity.
  • the said compensation member acts on the yarn to brake it or to increase the speed with which it is unwound from the bobbin (i.e. by removing more yarn from the bobbin) on the basis of a yarn withdrawal speed by said device which, in its turn, responds to a request for yarn by the textile machine.
  • This braking or acceleration of the yarn directed to the known device for feeding the yarn at constant tension and quantity prevents said yarn being able to leave this device with variations in its physical elongation and diameter (even if at constant tension) such as to result in the production of an article of imperfect appearance: in the absence of the compensator member, said yarn when combined with another yarn of unvaried physical characteristics would give rise to an article in which the different elongation and diameter of the yarns would be recognizable. This does not happen if the aforesaid compensator member is present, this enabling the yarn to be “processed” by the feed device as if the yarn were without elasticity.
  • said member enables the yarn to absorb the elongation and diameter variation occurring on its withdrawal from the bobbin before entering the feed device; in other words, the yarn returns to its pre-stretch conditions at the moment in which its tension is evaluated by the DTC device.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US10/508,421 2002-04-10 2003-03-28 Device and method for feeding an elastomeric yarn to a textile machine Abandoned US20050173579A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI2002A000770 2002-04-10
IT2002MI000770A ITMI20020770A1 (it) 2002-04-10 2002-04-10 Dispositivo e metodo per alimentare un filo elastomerico ad una macchina tessile al fine di avere un manufatto di qualita' costante in ogni
PCT/EP2003/003257 WO2003085183A1 (en) 2002-04-10 2003-03-28 Device and method for feeding an elastomeric yarn to a textile machine

Publications (1)

Publication Number Publication Date
US20050173579A1 true US20050173579A1 (en) 2005-08-11

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Application Number Title Priority Date Filing Date
US10/508,421 Abandoned US20050173579A1 (en) 2002-04-10 2003-03-28 Device and method for feeding an elastomeric yarn to a textile machine

Country Status (10)

Country Link
US (1) US20050173579A1 (zh)
EP (1) EP1492911B9 (zh)
CN (1) CN100434585C (zh)
AT (1) ATE466982T1 (zh)
AU (1) AU2003226739A1 (zh)
DE (1) DE60332444D1 (zh)
ES (1) ES2345098T3 (zh)
IT (1) ITMI20020770A1 (zh)
RU (1) RU2004133029A (zh)
WO (1) WO2003085183A1 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090139271A1 (en) * 2007-12-04 2009-06-04 B.T.S.R. International S.P.A. Method And Arrangement For Feeding, With Yarn Of Constant Absorbed Length, A Textile Machine Operating On A Plurality Of Yarns
US20110006096A1 (en) * 2008-03-11 2011-01-13 B.T.S.R. International S.P.A. Device and method for the constant tension feeding of threads or yarns fed in a discontinuous way
US7891597B1 (en) * 2008-02-08 2011-02-22 Henson Dale L Tension control system for a continuous winding machine
US20130056573A1 (en) * 2010-05-18 2013-03-07 Btsr International S.P.A. Improved Method and Device for Feeding a Yarn or Thread to a Processing Machine with Constant Tension and Velocity
US20130118281A1 (en) * 2011-07-08 2013-05-16 Thales Linear Actuator
US20150039120A1 (en) * 2012-02-03 2015-02-05 Btsr International S.P.A. Simplified system and method for managing the feed of a plurality of yarns at constant tension and/or velocity to a textile machine
US9296165B1 (en) 2013-01-04 2016-03-29 Dale L. Henson Apparatuses for expanding tubing and methods of use
WO2016045987A1 (de) * 2014-09-22 2016-03-31 Maschinenfabrik Niehoff Gmbh & Co. Kg Spulenträger für eine flecht-, wickel- oder spiralisiermaschine
US20180038023A1 (en) * 2015-03-12 2018-02-08 Btsr International S.P.A. Method and system for managing and controlling the feeding of at least one thread to a textile machine as a function of the operating step of the latter

Families Citing this family (15)

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Publication number Priority date Publication date Assignee Title
US7540174B2 (en) * 2005-04-19 2009-06-02 Invista North America S.Ar.L. Method and apparatus for circular knitting with elastomeric yarn that compensate for yarn package relaxation
JP5339110B2 (ja) * 2005-11-17 2013-11-13 ヤマトミシン製造株式会社 ミシンの糸供給装置
US7891276B2 (en) 2007-08-31 2011-02-22 Kimbelry-Clark Worldwide, Inc. System and method for controlling the length of a discrete segment of a continuous web of elastic material
WO2009110249A1 (ja) * 2008-03-07 2009-09-11 株式会社島精機製作所 弾性糸使用の編地編成装置および方法
ITMI20111027A1 (it) 2011-06-08 2012-12-09 Btsr Int Spa Metodo e dispositivo per alimentare a tensione e velocita' o quantita' costante un filo ad una macchina tessile
CN103015021B (zh) * 2012-12-31 2015-01-21 加宝利服装有限公司 一种织物织造工艺、织造设备和系统
ITTO20130017A1 (it) * 2013-01-10 2014-07-11 Lgl Electronics Spa Gruppo di alimentazione di filato per macchine tessili.
CN103294005A (zh) * 2013-06-13 2013-09-11 宁波慈星股份有限公司 一种使织物的幅宽相同的方法
ITTO20130875A1 (it) * 2013-10-29 2015-04-30 Lgl Electronics Spa Alimentatore di filato positivo con controllo della tensione di alimentazione.
CN103910243B (zh) * 2014-04-10 2017-07-25 湖州市千金丝织厂 一种张力恒定的可变速喂入装置
CN104828645B (zh) * 2015-03-23 2018-01-26 华东理工大学 纱线超喂张力控制装置及其测试方法、及张力控制系统
ITUA20164460A1 (it) * 2016-06-17 2017-12-17 Lgl Electronics Spa Alimentatore di filato con rocchetto avvolgi-filo motorizzato
CN106592084B (zh) * 2017-02-22 2019-04-05 武汉纺织大学 一种电磁驱动圆纬机的输纱装置及方法
IT201800002452A1 (it) * 2018-02-06 2019-08-06 Btsr Int Spa Metodo, sistema alimentatore di filo perfezionato e dispositivo per ottimizzare l'alimentazione di filo ad una macchina tessile operante con elevata discontinuita' o con un moto alternato
IT201900011451A1 (it) * 2019-07-11 2021-01-11 Lgl Electronics Spa Metodo per l'alimentazione a tensione controllata di una pluralita' di filati ad una macchina tessile

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US3745793A (en) * 1970-12-11 1973-07-17 Bear Brand Hosiery Co Apparatus for feeding elastic yarn to circular knitting machines
US3858416A (en) * 1973-07-23 1975-01-07 Eugene F White Knitting machine yarn feeding apparatus
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US5454151A (en) * 1993-07-21 1995-10-03 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement for setting the tension of a thread
US6079656A (en) * 1995-10-06 2000-06-27 Memminger-Iro Gmbh Thread feed device for elastic yarn
US6105398A (en) * 1998-03-26 2000-08-22 Memminger-Iro Gmbh Positive feed mechanism for elastic yarns
US6457666B1 (en) * 1999-05-18 2002-10-01 Texkimp Limited Full-compensating tension controller

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DE3429207C2 (de) * 1984-08-08 1986-06-19 Gustav 7290 Freudenstadt Memminger Fadenliefervorrichtung für fadenverbrauchende Textilmaschinen
SE8502436D0 (sv) * 1985-05-17 1985-05-17 Iro Ab Anordning for positiv matning av ett foretredesvis elastiskt garn vid en stickmaskin, foretredesvis en strumpstickmaskin
DE19811241A1 (de) * 1998-03-14 1999-09-30 Memminger Iro Gmbh Fadenspannungssensor mit wiederholtem Abgleich
IT1303022B1 (it) * 1998-04-17 2000-10-20 Btsr Int Spa Dispositivo di controllo dell'alimentazione del filato ad una macchinatessile e metodo di controllo del funzionamento e produzione di

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Publication number Priority date Publication date Assignee Title
US3745793A (en) * 1970-12-11 1973-07-17 Bear Brand Hosiery Co Apparatus for feeding elastic yarn to circular knitting machines
US3858416A (en) * 1973-07-23 1975-01-07 Eugene F White Knitting machine yarn feeding apparatus
US4953367A (en) * 1988-07-15 1990-09-04 Memminger Iro Gmbh System for controlling supply of yarn to a yarn utilization apparatus, particularly multi-feed circular knitting machine
US5454151A (en) * 1993-07-21 1995-10-03 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement for setting the tension of a thread
US6079656A (en) * 1995-10-06 2000-06-27 Memminger-Iro Gmbh Thread feed device for elastic yarn
US6105398A (en) * 1998-03-26 2000-08-22 Memminger-Iro Gmbh Positive feed mechanism for elastic yarns
US6457666B1 (en) * 1999-05-18 2002-10-01 Texkimp Limited Full-compensating tension controller

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8170710B2 (en) * 2007-12-04 2012-05-01 B.T.S.R. International S.P.A. Method and arrangement for feeding, with yarn of constant absorbed length, a textile machine operating on a plurality of yarns
US20090139271A1 (en) * 2007-12-04 2009-06-04 B.T.S.R. International S.P.A. Method And Arrangement For Feeding, With Yarn Of Constant Absorbed Length, A Textile Machine Operating On A Plurality Of Yarns
US7891597B1 (en) * 2008-02-08 2011-02-22 Henson Dale L Tension control system for a continuous winding machine
US7997521B1 (en) 2008-02-08 2011-08-16 Dale Henson Tension control system for a continuous winding machine
US20110006096A1 (en) * 2008-03-11 2011-01-13 B.T.S.R. International S.P.A. Device and method for the constant tension feeding of threads or yarns fed in a discontinuous way
US8382023B2 (en) 2008-03-11 2013-02-26 B.T.S.R. International S.P.A. Device and method for the constant tension feeding of threads or yarns fed in a discontinuous way
US9181064B2 (en) * 2010-05-18 2015-11-10 Btsr International S.P.A. Method and device for feeding a yarn or thread to a processing machine with constant tension and velocity
US20130056573A1 (en) * 2010-05-18 2013-03-07 Btsr International S.P.A. Improved Method and Device for Feeding a Yarn or Thread to a Processing Machine with Constant Tension and Velocity
US20130118281A1 (en) * 2011-07-08 2013-05-16 Thales Linear Actuator
US8973460B2 (en) * 2011-07-08 2015-03-10 Thales Linear actuator
US20150039120A1 (en) * 2012-02-03 2015-02-05 Btsr International S.P.A. Simplified system and method for managing the feed of a plurality of yarns at constant tension and/or velocity to a textile machine
US9062397B2 (en) * 2012-02-03 2015-06-23 Btsr International S.P.A. Simplified system and method for managing the feed of a plurality of yarns at constant tension and/or velocity to a textile machine
US9296165B1 (en) 2013-01-04 2016-03-29 Dale L. Henson Apparatuses for expanding tubing and methods of use
WO2016045987A1 (de) * 2014-09-22 2016-03-31 Maschinenfabrik Niehoff Gmbh & Co. Kg Spulenträger für eine flecht-, wickel- oder spiralisiermaschine
CN106470926A (zh) * 2014-09-22 2017-03-01 尼霍夫机械制造公司 用于编织、缠绕或螺旋机的线圈架
US20170298546A1 (en) * 2014-09-22 2017-10-19 Maschinenfabrik Niehoff Gmbh & Co. Kg Bobbin carrier for a braiding, winding or spiraling machine
US10612171B2 (en) * 2014-09-22 2020-04-07 Maschinenfabrik Niehoff Gmbh & Co. Kg Bobbin carrier for a braiding, winding or spiraling machine
US20180038023A1 (en) * 2015-03-12 2018-02-08 Btsr International S.P.A. Method and system for managing and controlling the feeding of at least one thread to a textile machine as a function of the operating step of the latter
US10544529B2 (en) * 2015-03-12 2020-01-28 Btsr International S.P.A Method and system for managing and controlling the feeding of at least one thread to a textile machine as a function of the operating step of the latter

Also Published As

Publication number Publication date
ATE466982T1 (de) 2010-05-15
WO2003085183A1 (en) 2003-10-16
RU2004133029A (ru) 2005-04-20
DE60332444D1 (de) 2010-06-17
ITMI20020770A1 (it) 2003-10-10
AU2003226739A1 (en) 2003-10-20
CN100434585C (zh) 2008-11-19
EP1492911A1 (en) 2005-01-05
EP1492911B9 (en) 2010-09-01
CN1639401A (zh) 2005-07-13
EP1492911B1 (en) 2010-05-05
ITMI20020770A0 (it) 2002-04-10
ES2345098T3 (es) 2010-09-15

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