US3530658A - Yarn twister - Google Patents

Yarn twister Download PDF

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Publication number
US3530658A
US3530658A US877375A US3530658DA US3530658A US 3530658 A US3530658 A US 3530658A US 877375 A US877375 A US 877375A US 3530658D A US3530658D A US 3530658DA US 3530658 A US3530658 A US 3530658A
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United States
Prior art keywords
spindle
yarn
rotor
twist
bobbin
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Expired - Lifetime
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US877375A
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English (en)
Inventor
Dennis E Johnson
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Arthur D Little Inc
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Arthur D Little Inc
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Publication date
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/10—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting
    • D01H1/101—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting in which multiple twist is imparted at the take-up stations

Definitions

  • This invention relates to textile twisting and more particularly to a system for providing twisted yarn of synthetic fibers.
  • spinning as used herein in connection with the formation of synthetic fiber, is generally understood in the industry to refer to the chemical transformation of a liquid or melt into one or more continuous fila- 'rnents. This usage should be distinguished from the process, also known as spinning, in which staple is mechanically transformed into yarn, typically in connection with cotton, worsted and other natural fibers.
  • the prior art has used the so-called 2-for-1 twister in which a wound bobbin is emplaced on a driven spindle.
  • the bobbin is unwound by passing the yarn from the bobbin through the top of a hollow center of the spindle and out of the bottom of the spindle through a tube extending at right angles to the spindle.
  • the yarn coming out of the latter is then fed through a pigtail guide located above the spindle.
  • This system in operation, whirls a balloon of yarn about the spindle, the balloon wholly enclosing the bobbin.
  • this twister serves to impart twist only as the yarn package unwinds, it is not suitable for use with yarn coming directly from an extruder.
  • the prior art more commonly employs the ring-andtraveler systems in which yarn is fed into, rather than out of, a pigtail guide and hence to a traveler mounted on a movable ring.
  • the ring is disposed for rotation coaxially about a driven spindle, and the yarn is fed from the traveler to a bobbin on the spindle.
  • the ring typically can be translated along the axis of the spindle, hence as the spindle rotates, a tapered package can be laid onto the bobbin.
  • the present invention therefore has as a principal object provision of a method and system for imparting true twist to a yarn.
  • Other objects are to provide such a system wherein a high degree of twist is imparted; to provide such a system which is particularly useful in ice a continuous yarn spinning such as is necessary with a continuous fiber extrusion process; to provide such a system capable of operating at very high speeds so that large lengths of yarn per unit time can be processed; and to provide such a system which is simple, easy to operate and inexpensive to manufacture.
  • the present invention briefly comprises a rotatable spindle about which yarn is wound, the spindle being driven in rotation about a vertical axis. Also disposed for rotation about the same axis are a bobbin support and a traveler, all rotatable independently of the spindle and one another.
  • twist implies that a length of a yarn has imparted thereto a force which forces the yarn fibers to lie along at least a full (i.e., 360) helix about the long axis of the yarn.
  • a false twist is one where there is a spatially periodic reversal of the twist direction. Hence, tension applied to a length of yarn containing such a twist reversal will untwist the yarn.
  • a true twisted yarn cannot be so untwisted for the twist is continuous in the same direction.
  • the prior art includes a number of well driven devices such as ring-and-traveler systems over which the present invention is an improvement. Such systems are particularly well suited to providing true twisted yarns.
  • ring-and-traveler systems as in the present inventon, about 360 of real twist will be imparted to the yarn for each 360 of rotation of the traveler.
  • the rate of twist (Q) is equal to the rotational speed (N (revolutions per unit time) of the traveler or as the difference between the rotational speed (N of the spindle and rotational speed (N,,) of the traveler.
  • the present invention uses a principle which can be termed 3-for-1 and which is embodied in a device such as is shown in the drawing.
  • the latter device includes central elongated, cylindrical spindle 20, preferably disposed vertically and supported adjacent its lower end by appropriate spindle bearings 22 and 24 so as to be rotatable about its long axis.
  • Spindle includes a central bore 26 extending from opening 28 at the top end of the spindle to an intermediate point 29 preferably adjacent the bottom end of the spindle.
  • Mounted on spindle 20 and extending perpendicularly to the axis of the latter is whorl tube 30.
  • the latter can be a separate element as shown, or formed integrally with spindle 20, and includes a central bore 32 connected at one end to bore 26 at point 29 and having an opening 34 at the other end. Both openings 28 and 34 are preferably belled or flared outwardly and are surfaced with ceramic fittings (not shown).
  • the junction between bores 32 and 26 is preferably smoothly rounded internally.
  • the embodiment of the invention includes motor 36 connected for driving endless belt 37.
  • the latter is mounted about pulley 38 (which is driven by motor 36) and about circumferential belt-slot 39 cut into spindle 20 between spindle bearings 22 and 24.
  • rotor bearing 40 Mounted for rotation about the circular periphery of spindle 20 adjacent whorl tube is rotor bearing 40, a similar rotor bearing 42 being also provided about spindle 20 at a position intermediate the upper end of the latter and bearing 40.
  • Elongated hollow cylindrical rotor 44 is mounted coaxially about spindle 20 on bearings 40 and 42 for rotation independently of the spindle about the long axis of the latter.
  • the rotor As means for driving rotor 44 in rotation, the rotor is provided with a number of magnetic or magnetizable rotor pole pieces such as 45 and 46 extending in a common plane radially outward with respect to the axis of rotation of the latter.
  • the device is also provided with a plurality of stator pole pieces such as 47 and 48 disposed in the same plane as the rotor poles and spaced outwardly from the latter.
  • Stator pole pieces 47 and 48 are selectively magnetizable to drive the rotor pole pieces. Because the structure and technique of electromagnetic drive systems of this type is so well known, only the pole pieces of the system are schematically shown.
  • Removably and coaxially mounted about rotor 44 is hollow cylindrical spool or bobbin 50 upon which yarn package 52 is to be wound.
  • Means are provided, typically in the form of pin 54 fixedly connected to pole 46 and positioned to be engageable with a corresponding hole in an edge of bobbin 50.
  • the present device includes traveler rotor 56 formed as a disk or a wheel having a plurality of radial arms or the like.
  • Rotor 56 is mounted for rotation about bearing 58, the latter in turn being mounted on spindle 20 adjacent the upper end of the latter.
  • Bearing 58 is both rotatable about and independently of spindle 20 and translatable along the latter.
  • traveler arm 60 Depending downwardly adjacent the periphery of rotor 56 is traveler arm 60 having an opening 62 adjacent its distal end 63. Arm 60 is so dimensioned that translation of rotor 56 along spindle 20 can move opening 62 along a line parallel to the axis of spindle 20 and between respective positions radially opposite respective end portions of bobbin 50.
  • Arm 60 is held by rotor 56 at a radial distance from the bobbin sufficient to allow a reasonably sized yarn package 52 to build up on the latter.
  • the rotor can also be driven electromagnetically.
  • rotor 56 includes magnetized rotor pole pieces 64 and 65 separated radially from one or more stator pole pieces 66 and 67.
  • the latter are preferably mounted, on support means such as rail 68, for movement along a line parallel to the long axis of spindle 20. Movement of the stator pole pieces on supporting rails preferably is effected by known devices (not shown).
  • rotor 56 and its associated bearing 58 can be slipped off of spindle 20 to permit removal or insertion of bobbin 50.
  • the system includes a yarn guide such as pigtail guide 70 supported on suitable means in a fixed position preferably above and colinear with the axis of the spindle.
  • a yarn guide such as pigtail guide 70 supported on suitable means in a fixed position preferably above and colinear with the axis of the spindle.
  • a bundle of fibers forming a yarn is threaded thru the pigtail guide 70, between rotor 56 and the stator pole pieces 66 and 67 to opening 34.
  • the yarn then passes through bores 32 and 26, out of openings 28, back between rotor 56 and the stator pole pieces 66 and 67, through opening 62 and is attached to bobbin 50.
  • Motor 36 drives spindle 20 in rotation whilst appropriate electromagnetic impulses applied by stator pole pieces 47 and 48 dri-ve rotor 44 in rotation, and those applied by stator pole pieces 66 and 67 drive rotor 56 in rotation.
  • spindle 20 and traveler rotor 56 should counter-rotate.
  • Each rotation of the spindle per se through 360 imparts 2 twists onto yarn 72 being wound on the bobbin.
  • Each rotation of traveler arm 60 per se through 360 imparts a single twist.
  • spindle 20 rotates clockwise (looking down from the top of the spindle)
  • two Z twists are imparted to the yarn
  • the counterclockwise rotation of arm 60 then providing a third Z twist.
  • each counterclockwise rotation of the spindle and accompanying clockwise rotation of the traveler arm provides three S twists.
  • the bobbin may or may not be driven if one Wishes.
  • the bobbin preferably is driven to rotate in the same direction as the traveller arm but at a somewhat different speed, either faster or slower.
  • the bobbin can also, if one wishes, rotate in the opposite direction to the traveller to achieve extremely high winding speeds which however necessarily reduces the total twist per unit length achieved.
  • the invention generally then is formed of three independent rotors, one of which provides two twists per revolution to the yarn, a second of which adds another twist per revolution and the third of which achieves winding of the trebly twisted yarn.
  • the periphery of rotor 56 can include a guide slot or opening for the inner balloon which only rotates as fast as the traveler arm anyway. Such an arrangement would of course insure that the two balloons do not engage one another, at least between rotor 56 and its associated stator pole pieces. Also, if one wishes, the various rotors can all be driven mechanically by suitable coaxial sleeves each coupled, as by appropriate gearing, to a respective motor.
  • a device for twisting and winding yarn on a hollow bobbin comprises, in combination a hollow elongated spindle mounted for rotation about its long axis and having a hollow whorl tube extending substantially normally to said axis, the interior of said spindle and tube forming a continuous passageway;
  • a traveler element mounted for rotation about said axis independently of both said spindle and said rotor means and including a yarn guide radially spaced from the outer surface of said bobbin between the ends of the latter.
  • a device as defined in claim 1 including means for independently driving in rotation said spindle, said rotor means and said traveler element.
  • a device as defined in claim 2 wherein said means for driving said rotor and said traveler element are electromagnetic.
  • a method of imparting twist to yarn during winding of the latter about a spool comprising the steps of threading said yarn through a hollow elongated spindle having a substantially perpendicular whorl tube, the interiors of which form a continuous passageway, said yarn extending from a first guide coaxially located above said spindle through said whorl tube to an opening at one end of said spindle;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US877375A 1969-11-17 1969-11-17 Yarn twister Expired - Lifetime US3530658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87737569A 1969-11-17 1969-11-17

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US3530658A true US3530658A (en) 1970-09-29

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US877375A Expired - Lifetime US3530658A (en) 1969-11-17 1969-11-17 Yarn twister

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US (1) US3530658A (de)
DE (1) DE2056267A1 (de)
FR (1) FR2067334B3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855773A (en) * 1973-05-07 1974-12-24 Phillips Fibers Corp Two-for-one twister
US5085045A (en) * 1990-06-06 1992-02-04 Kabushiki Kaisha Ishikawa Seisakusho Ltd. Double twist spindle apparatus
US5964083A (en) * 1997-03-15 1999-10-12 Volkmann Gmbh & Co. Method for producing a twisted yarn in a combined spinning and twisting process
CN103741286A (zh) * 2014-01-21 2014-04-23 台州市路桥穗丰纺织机械有限公司 一次成型倍捻锭子

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537506A (en) * 1947-01-22 1951-01-09 Beria Antonio Winding spindle
US2575476A (en) * 1950-12-22 1951-11-20 American Viscose Corp Twisting and winding machine drive system
US3368336A (en) * 1966-03-02 1968-02-13 Palitex Project Co Gmbh Two-for-one twisting spindle
US3377790A (en) * 1964-12-18 1968-04-16 Sulzer Ag Spinning frames
US3406511A (en) * 1967-07-27 1968-10-22 Palitex Project Co Gmbh Two-for-one twisting spindle with interior winding-up of the thread

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537506A (en) * 1947-01-22 1951-01-09 Beria Antonio Winding spindle
US2575476A (en) * 1950-12-22 1951-11-20 American Viscose Corp Twisting and winding machine drive system
US3377790A (en) * 1964-12-18 1968-04-16 Sulzer Ag Spinning frames
US3368336A (en) * 1966-03-02 1968-02-13 Palitex Project Co Gmbh Two-for-one twisting spindle
US3406511A (en) * 1967-07-27 1968-10-22 Palitex Project Co Gmbh Two-for-one twisting spindle with interior winding-up of the thread

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855773A (en) * 1973-05-07 1974-12-24 Phillips Fibers Corp Two-for-one twister
US5085045A (en) * 1990-06-06 1992-02-04 Kabushiki Kaisha Ishikawa Seisakusho Ltd. Double twist spindle apparatus
US5964083A (en) * 1997-03-15 1999-10-12 Volkmann Gmbh & Co. Method for producing a twisted yarn in a combined spinning and twisting process
CN103741286A (zh) * 2014-01-21 2014-04-23 台州市路桥穗丰纺织机械有限公司 一次成型倍捻锭子
CN103741286B (zh) * 2014-01-21 2015-12-09 台州市路桥穗丰纺织机械有限公司 一次成型倍捻锭子

Also Published As

Publication number Publication date
DE2056267A1 (de) 1971-05-27
FR2067334A7 (de) 1971-08-20
FR2067334B3 (de) 1973-08-10

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