US3858816A - Yarn bundle with piecing end and method of forming same - Google Patents

Yarn bundle with piecing end and method of forming same Download PDF

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Publication number
US3858816A
US3858816A US297731A US29773172A US3858816A US 3858816 A US3858816 A US 3858816A US 297731 A US297731 A US 297731A US 29773172 A US29773172 A US 29773172A US 3858816 A US3858816 A US 3858816A
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United States
Prior art keywords
yarn
piecing
support
winding
wound
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Expired - Lifetime
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US297731A
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English (en)
Inventor
Claude Corbiere
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Rhone Poulenc Textile SA
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Rhone Poulenc Textile SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/34—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails
    • B65H54/343—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails when starting winding on an empty bobbin
    • 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

  • ABSTRACT A yarn bundle wound on a support including a piecing end having an initial piecing winding wound around an end portion of the support and a principal piecing winding wound over the initial piecing winding with a reverse pitch relative thereto such that the initial piecing winding is captured by the principal piecing winding, and a method of forming a yarn bundle with a piecing end as described above including moving a yarn guide toward an end of a support, catching yarn to be wound on the support near the end of the sup port to deliver the yarn to a rotating element to form the initial piecing winding, and moving the yarn guide away from the end of the support to form the principal piecing winding over the initial piecing winding.
  • the present invention pertains to yarn bundles wound on a support and, more particularly, to piecing ends for such yarn bundles and methods of forming the same.
  • Yarn bundles utilized in the textile industry are customarily provided with a piecing end; that is, a portion of the yarn in the bundle near an end of the support on which the yarn is wound is left exposed to define an end of the yarn bundle which may be attached or pieced to an end of another yarn bundle to permit uninterrupted reeling or other operations with severalbundles.
  • the piecing end sometimes referred to as a piecing winding, a reserve winding or a transfer tail, is normally formed of several loops of yarn, either contiguous or spaced, at an end portion of the winding support with the primary winding formed along the length of the support.
  • yarn bundle as utilized herein includes any quantity of yarn wound around a support, such as spools, cops or spindles, for example; and, the term yarn as utilized herein includes any elongate assembly of filaments or fibers of simple or complex structure for use in textile manufacturing.
  • Piecing ends are formed on yarn bundles in order to permit joining or attaching of a plurality of yarn bundles on separate individual supports thereby allowing continuous, uninterrupted unwinding of the yarn from the plurality of yarn bundles.
  • Piecing ends are generally formed at the start of the winding of a yarn bundle and normally include a free end which must be fixed to the winding support to prevent inadvertent unwinding of the piecing end during transportation and handling of the yarn bundle.
  • the free end has been fixed to the winding support by various means, such as utilizing an adhesive wafer or a drop of paste, inserting the end of the yarn in a notch in the base of the support or engaging the end of the yarn under a holding tongue disposed on the base of the support of clamp the end of the yarn between the tongue and the support.
  • the above described methods of fixing the free end of the piecing end to the winding support have the disadvantage of requiring a supplementary operation to attach or fix the free end of the yarn to the support. More particularly, the use of an adhesive wafer requires an extra operation in utilization of the piecing end since the adhesive wafer must be removed to grasp the free end of the yarn and the adhesive wafer must be disposed of thereby requiring additional and time consuming handling, and the use of a drop of paste for fixing requires accurate placement in order not to adversely effect the wound yarn.
  • the notch in the base of the support can be utilized only where the support is made of certain wood or plastic materials and causes, after a period of time, deterioration of the winding sup port.
  • the use of clamping means, such as the holding tongue requires manipulation of the support prior to winding and additional handling of the yarn, such additional handling representing a supplementary operation increasing the cost of the yarn bundle.
  • Another object of the present invention is to form a piecing end for a yarn bundle including an initial piecing winding around an end portion ofa winding support and a principal piecing winding over the initial piecing winding with a reverse pitch relative thereto to lock the piecing end against the support.
  • a further object of the present invention is to provide a method of forming a piecing end for a yarn bundle wound on a rotating support by moving a yarn to be wound to a rotating element for forming an initial piecing winding and, thereafter, forming a principal piecing winding over the initial piecing winding to capture the same.
  • the present invention has an additional object in the use of a reciprocating yarn guide for forming a piecing end and a primary winding ofa yarn bundle without requiring movement of the yarn guide out of its normal reciprocating path.
  • Yet another object of the present invention is to cover or capture a length of yarn near the free end of the piecing end of a yarn bundle by loops constituting a principal piecing winding such that the length of yarn is locked between the loops of the principal piecing winding with the free end extending therefrom.
  • a further object of the present invention is to form a piecing end for a wound yarn bundle with the end extending freely from the yarn bundle to facilitate grasping of the piecing end for use.
  • piecing ends can be formed manually, semiautomatically or completely automatically without requiring additional or supplementary operations, there is substantially no risk of accidental or in advertent unwinding of the piecing end, and yarn bundles with piecing ends can be formed in reduced time with reduced cost.
  • the present invention is generally characterized in a yarn bundle wound on a support including a piecing end having an initial piecing winding wound around an end portion of the support, and a principal piecing winding continuing from the initial piecing winding and wound over the initial piecing winding with a reverse pitch relative thereto; and a primary winding continuing from the principal winding wound around the length of the support with the exception of the end portion such that the piecing end is adjacent the primary winding and the initial piecing winding is locked by the principal piecing winding against the support.
  • the present invention is further generally characterized in a method of forming a piecing end for a yarn bundle wound on a rotating support including positioning a length of yarn to be wound near an end of the support; moving a yarn guide toward the end of the support; catching the length of yarn to be wound near the end of the support; delivering the caught yarn to a rotating element to form an initial piecing winding around an end portion of the support; and moving the yarn guide away from the end of the support to form a principal piecing winding over the initial piecing winding.
  • FIG. 1 is a diagrammatic front elevation of apparatus for forming piecing ends according to the present invention.
  • FIG. 2 is a diagrammatic side elevation of the apparatus of FIG. 1.
  • FIG. 3 is a diagrammatic front elevation of the apparatus of FIG; 1 just prior to delivery of the yarn to an engaging element for formation of an initial piecing winding.
  • FIG. 4 is a side elevation of the apparatus of FIG. 1 after the yarn is caught by the engaging element.
  • FIG. 5 is a diagrammatic front elevation of the apparatus of FIG. 1 after formation of the piecing end.
  • FIG. 6 is a diagrammatic flat pattern development of the yarn bundle and piecing end of the present inventron.
  • FIG. 1 DESCRIPTION OF THE PREFERRED EMBODIMENT Apparatus for forming yarn bundles having piecing ends in accordance with the present invention is illustrated in FIG. 1 and includes a tubular winding support 10, such as a pirn or bobbin, mounted on a spindle to abut a collar 12 at one end, the spindle being rotated by any suitable means for driving a shaft 14 of the spindle such that the support rotates about its longitudinal axis.
  • An engaging element in the form of a finger 16 extends from the inside surface of collar 12 parallel to the longitudinal axis of the support 10 such that the finger 16 rotates with the spindle and the winding support.
  • a length of yarn 18 to be wound is positioned near the end of support 10 by means of a guide ring 20 upstream of the support 10, and the yarn 18 is held in position downstream of guide ring 22 by any suitable means, such as a suction or vacuum source.
  • the length of yarn 18 contacts support 10 through an arcuate angle a1, and the path of the yarn 18 between guide rings 20 and 22 is disposed at an angle a2 with a plane transverse to the longitudinal axis of support 10 and passing through guide ring 22, the path of the yarn being such as to prevent contact of the yarn with finger 16.
  • a yarn guide 24 supported on a traveller, not shown, is moved along a reciprocating path indicated by the arrow 26 back and forth parallel to the longitudinal axis of the support 10, and the yarn guide 24 can be utilized to form both the piecing end according to the present invention and the primary winding of a yarn bundle.
  • the yarn guide may be provided with reciprocating movement in any suitable manner, such as, for instance, by the traveller mounting the yarn guide having a follower riding in a helicoidal groove in a rotating cylinder.
  • the apparatus prior to commencement of winding is in the state illustrated in FIG. 1 with the yarn guide 24 moving toward the end of support 10 at collar 12, the length of yarn 18 being positioned near the end of support 10 at the angle a2 such that the tinger 16 cannot catch the yarn as it rotates.
  • the yarn guide 24 moves forward, it catches the yarn 18, as illustrated in FIG. 3, and delivers the yarn to be caught by finger 16.
  • the engagement of the yarn 18 with finger 16 may be accomplished either by the initial orientation of the yarn 18 or by supplying a thrust to the yarn due to the force from movement of yarn guide 24.
  • a cutting blade 28 is operated to break or cut the yarn downstream of the support 10 such that the yarn begins to wind around the support 10.
  • an initial piecing winding is formed at a gradually diminishing distance from collar 12 as yarn guide 24 continues to move toward the collar.
  • the yarn guide reaches the end of reciprocating path 26
  • its direction of movement is reversed and formation of a principal piecing winding having a reverse pitch relative to the pitch of the initial piecing winding is formed on the support.
  • the principal piecing winding is formed over the initial piecing winding to cover the same and capture it automatically to lock or fix the free end of the piecing end against the support.
  • FIG. 5 illustrates the movement of the yarn guide 24 away from the end of the support 10 at collar 12 toward an opposite end of the reciprocating path thereby forming the principal piecing winding and commencing the formation of the primary winding of the yarn bundle.
  • the primary winding is completed by reciprocating movement of the yarn guide 24; and, since the yarn is never positioned downstream of the yarn guide at an angle to be caught by finger 16, the primary winding will be formed along the length of the support 10 with the exception of the end portion of the support where the piecing end is formed.
  • a yarn bundle formed by the method of the present invention is illustrated as a flat pattern in FIG. 6 and includes a piecing end 30 formed on an end portion 32 of support 10, as shown in FIG. 5.
  • Piecing end 30 is basically formed of an initial piecing winding 34 and a principal piecing winding 36.
  • Initial piecing winding 34 terminates at a free end A which corresponds with the point at which the yarn 18 is cut, and the free end has a length extending from point A to a point B, with the initial piecing winding 34 at the point B and with a point C intermediate points A and B corresponding to the point at which the yarn 18 is engaged by the finger 16.
  • Point B represents the end of the free part of the yarn defined by length AB which is not covered by the main transfer winding 36.
  • the length CD of the initial piecing winding corresponds substantially with the length of yarn initially in contact with support 10 through arcuate angle a1
  • the length DE of the initial piecing winding is the yarn wound on the support 10 as the yarn guide 24 continues its forward movement toward collar 12.
  • Principal piecing winding 36 extends between points E and F and is wound over the initial piecing winding to form a locking zone between points E and F to capture the initial piecing winding.
  • the primary winding 38 commences at point F and is wound around substantially the entire length of support 10 between lines X and Y as yarn guide 24 is reciprocated. Piecing end 30, thus, is adjacent primary winding 38 and left exposed for use.
  • the portion of principal piecing winding 36 between F and F is contiguous with primary winding 38 and disposed directly on the support whereas the portion of principal piecing winding 36 between E and F covers initial piecing winding 34.
  • the yarn bundle of the present invention is wound continuously without the addition of extra yarn or other materials for fixing the free end.
  • the method of the present invention simply and reliably produces a yarn bundle having a captive piecing end, the method being easily automated.
  • the initial positioning of the length of yarn 18 prior to commencement of operation is important to the present invention in that the angle a2 must be such that finger 16, which can be any engaging element of suitable configuration, will not catch the yarn during rotation of the spindle until the yarn is thrust out of position and delivered to finger 16 by yarn guide 24.
  • the initial positioning of the length of yarn 18 also controls the length of the initial piecing winding, which desirably is only a portion of a single loop around the support while the principal piecing winding includes a plurality of loops locking the initial piecing winding against the support. It is noted, however, that the initial piecing winding can constitute more than one loop around the support.
  • a method of forming a piecing end for a yarn bundle wound on a rotating support comprising the steps of positioning a length yarn to be wound near an end of the support;
  • said positioning step includes positioning the length of yarn to be wound at an oblique angle relative to a plane transverse to the longitudinal axis of the support and passing through a guide ring for the length of yarn.
  • said positioning step includes positioning the length of yarn to be wound such that the rotating element cannot engage the yarn until delivery of the yarn by the yarn guide.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Winding Filamentary Materials (AREA)
US297731A 1971-10-29 1972-10-16 Yarn bundle with piecing end and method of forming same Expired - Lifetime US3858816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7139876A FR2158762A5 (fr) 1971-10-29 1971-10-29

Publications (1)

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US3858816A true US3858816A (en) 1975-01-07

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US297731A Expired - Lifetime US3858816A (en) 1971-10-29 1972-10-16 Yarn bundle with piecing end and method of forming same

Country Status (7)

Country Link
US (1) US3858816A (fr)
JP (1) JPS4947638A (fr)
CH (1) CH558295A (fr)
DE (1) DE2252858A1 (fr)
FR (1) FR2158762A5 (fr)
GB (1) GB1415352A (fr)
IT (1) IT966500B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899140A (en) * 1973-05-21 1975-08-12 Socitex Textile machine with device for forming a yarn reserve on a bobbin tube during the winding operation and a yarn tension sensor cooperating with the device
US3982707A (en) * 1975-02-10 1976-09-28 Phillips Fibers Corporation Method and apparatus for the production of two packages of yarn with transfer tails
US4019690A (en) * 1974-10-04 1977-04-26 Rieter Machine Works, Ltd. Winding device for automatically changing bobbin tubes
US4058264A (en) * 1974-07-25 1977-11-15 Teijin Limited Yarn wound package provided with a transfer tail wind and method for forming the transfer tail wind
JPS5327132U (fr) * 1976-08-10 1978-03-08
US4093135A (en) * 1975-01-28 1978-06-06 Fmn Schuster & Co. Device for controlling a reserve winding when winding thread on a spool or core
US4195788A (en) * 1978-03-20 1980-04-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for forming transfer tail windings on a bobbin in an open-end spinning machine
US4595151A (en) * 1984-05-18 1986-06-17 Rieter Machine Works, Ltd. Bobbin inserting device
US4634064A (en) * 1983-12-09 1987-01-06 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Process for forming a thread-reserve winding
US4739940A (en) * 1985-04-16 1988-04-26 Rieter Machine Works Limited Method and apparatus of forming an overwound transfer tail
US4787565A (en) * 1986-03-06 1988-11-29 FMN Schuster GmbH & KG Method and assembly for forming thread reserve on spool tube in thread winding apparatus
US4878629A (en) * 1987-06-17 1989-11-07 W. Schlafhorst & Co. Reserve winding of yarn on a tube of a cross-wound bobbin and method and appartus of forming same
US6505791B1 (en) * 1998-06-12 2003-01-14 Maschinenfabrik Rieter Ag Thread traversing device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500820A1 (fr) * 1981-03-02 1982-09-03 Alsacienne Constr Meca Dispositif pour amorcer l'enroulement du fil sur un support de bobine dans les machines textiles equipees d'un systeme de bobinage
JPS60218263A (ja) * 1984-04-11 1985-10-31 Teijin Ltd 延伸撚糸機等の糸条巻取方法
US4557423A (en) * 1984-07-20 1985-12-10 Electric Power Research Institute, Inc. Combined clamping and cutting system for moving filament

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1477162A (en) * 1920-04-14 1923-12-11 Andrew Thomas Yarn package
US2936962A (en) * 1957-11-05 1960-05-17 American Viscose Corp Yarn tail guide assembly
US2998202A (en) * 1957-03-08 1961-08-29 Leesona Corp Initial thread end snagger
US3030039A (en) * 1955-12-15 1962-04-17 American Viscose Corp Dual yarn winding apparatus
US3284026A (en) * 1962-12-19 1966-11-08 American Euka Corp Yarn package

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1477162A (en) * 1920-04-14 1923-12-11 Andrew Thomas Yarn package
US3030039A (en) * 1955-12-15 1962-04-17 American Viscose Corp Dual yarn winding apparatus
US2998202A (en) * 1957-03-08 1961-08-29 Leesona Corp Initial thread end snagger
US2936962A (en) * 1957-11-05 1960-05-17 American Viscose Corp Yarn tail guide assembly
US3284026A (en) * 1962-12-19 1966-11-08 American Euka Corp Yarn package

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899140A (en) * 1973-05-21 1975-08-12 Socitex Textile machine with device for forming a yarn reserve on a bobbin tube during the winding operation and a yarn tension sensor cooperating with the device
US4058264A (en) * 1974-07-25 1977-11-15 Teijin Limited Yarn wound package provided with a transfer tail wind and method for forming the transfer tail wind
US4019690A (en) * 1974-10-04 1977-04-26 Rieter Machine Works, Ltd. Winding device for automatically changing bobbin tubes
US4093135A (en) * 1975-01-28 1978-06-06 Fmn Schuster & Co. Device for controlling a reserve winding when winding thread on a spool or core
US3982707A (en) * 1975-02-10 1976-09-28 Phillips Fibers Corporation Method and apparatus for the production of two packages of yarn with transfer tails
JPS5327132U (fr) * 1976-08-10 1978-03-08
US4195788A (en) * 1978-03-20 1980-04-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for forming transfer tail windings on a bobbin in an open-end spinning machine
US4634064A (en) * 1983-12-09 1987-01-06 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Process for forming a thread-reserve winding
US4595151A (en) * 1984-05-18 1986-06-17 Rieter Machine Works, Ltd. Bobbin inserting device
US4739940A (en) * 1985-04-16 1988-04-26 Rieter Machine Works Limited Method and apparatus of forming an overwound transfer tail
US4787565A (en) * 1986-03-06 1988-11-29 FMN Schuster GmbH & KG Method and assembly for forming thread reserve on spool tube in thread winding apparatus
US4878629A (en) * 1987-06-17 1989-11-07 W. Schlafhorst & Co. Reserve winding of yarn on a tube of a cross-wound bobbin and method and appartus of forming same
US6505791B1 (en) * 1998-06-12 2003-01-14 Maschinenfabrik Rieter Ag Thread traversing device

Also Published As

Publication number Publication date
FR2158762A5 (fr) 1973-06-15
DE2252858A1 (de) 1973-05-03
IT966500B (it) 1974-02-11
CH558295A (fr) 1975-01-31
JPS4947638A (fr) 1974-05-08
GB1415352A (en) 1975-11-26

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