US3307805A - Yarn tensioning device - Google Patents

Yarn tensioning device Download PDF

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Publication number
US3307805A
US3307805A US454589A US45458965A US3307805A US 3307805 A US3307805 A US 3307805A US 454589 A US454589 A US 454589A US 45458965 A US45458965 A US 45458965A US 3307805 A US3307805 A US 3307805A
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United States
Prior art keywords
yarn
strip
package
retarding
yarn package
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Expired - Lifetime
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US454589A
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English (en)
Inventor
Verbeek Petrus
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Akzona Inc
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American Enka Corp
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Publication date
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/08—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by contact of running length of material with supply package
    • 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

  • This invention relates to a device to be used in conjunction with yarn packages when thread is to be withdrawn from the package for further processing.
  • the yarn packages When twisted yarn is to be withdrawn from yarn packages to be fed into textile processing machinery the yarn packages are generally supported in a carrier or creel type device. Such a support device, which may hold any number of yarn packages, is used in warping operations. During warping operations, thread ends from a plurality of yarn packages supported on a creel are drawn over the ends of the packages, paralleled, passed through a series of thread guides, and fed in a flat sheet-like formation to a rotating beam. These beams, containing a plurality of thread ends, are used to supply thread to textile operations such as weaving, knitting, etc. where it is desired to have a warp of threads for processing. In circular knitting operations, yarn packages are also supported in such a way as to supply twisted yarn over the end of the package.
  • the withdrawal of the twisted yarn threads from the individual package is generally intermittent, with repeated stopping and starting of the yarn withdrawal occurring throughout the normal processing cycle.
  • withdrawal of the twisted yarn is intermittent, there is a pronounced tendency of the yarn to overrun on the yarn package.
  • the withdrawal of yarn is suddenly interrupted, its rotational enertia causes a considerable amount of yarn to continue to leave the package.
  • This override leads to entanglement of the thread end being delivered by a package and the formation of snarls in the yarn, which is in a relaxed state. Since the thread relaxes even back into the windings on the yarn package, snarls develop on the package itself.
  • apparatus which peripherally encloses a yarn package to exercise a constrictive pressure on the periphery of the wound yarn.
  • the enclosing device will continuously engage a portion of the peripheral surface of the package and press on the outer surface of the yarn to prevent thread overto hang freely-over the package and contact opposite sides of the package.
  • the fabric contacts only a small portion of peripheral surface of the yarn package and, as the diameter of the yarn package decreases during removal of the thread, this contact surface becomes even smaller. Because such a small area is contacted, interru-ptions in withdrawal of the yarn still create snarls or entanglements in the threads. Also balloon tension variations caused by the decrease in the package diameter cannot be effectively reduced.
  • U.S. Patent 2,869,802 Another type yarn tensioning means is disclosed in U.S. Patent 2,869,802.
  • the device consists of a plurality of strips or blades of flexible material which are biased against the peripheral surface of the yarn package and contact this surface at point intervals about the circumference to produce a tension on the yarn as it is withdrawn from the package.
  • the flexible strips are fixed in package-contacting position at the beginning of the unwinding of the package, the tension exerted on the thread being withdrawn from the package varies as the package diameter decreases. Any attempt to produce a uniform tension in the yarn throughout the unwinding cycle must necessarily be accomplished by repeated adjustment of the individual positions of each strip. This adjustment, of course, is completely impractical in a continuous thread removal operation.
  • a major disadvantage in all of the mentioned devices used to prevent tangling or snarling of twisted yarn during intermittent operations is the fact that they cannot be used with textile devices which require a continuous supply thread from each yarn supply point.
  • at least two yarn packages are located adjacent each thread supply point, the trailing edge of the leading thread supply package being attached to the leading edge of the second yarn package. As the yarn on the leading thread package is depleted, it automatically shifts the thread supply, via the transfer tail, to the second package.
  • the empty spool of the first package is replaced with a fresh thread package and its leading thread attached to the transfer tail of the second package, In this way, a continuous thread can be supplied from each thread point without shutting down operations to replace individual thread packages.
  • the thread tensioning apparatus known heretofore are not adapted to this plural package set up. Their use in a continuous supply system would necessitate stopping the overall operation to replace individual empty yarn packages. This of course is completely impractical in large thread supplying operations such as warping.
  • the objects of the present invention are accomplished by employing, as a yarn package tensioning means, a device comprising a retarding strip of fabric which surrounds the yarn package, extends over the entire surface length of the package, and contacts the peripheral yarn of the package throughout an angle of at least 270 during the entire period of yarn Withdrawal from the package.
  • the area of contact of the fabric with the peripheral surface of the yarn package is maintained constant, and remains so, independent of the outside diameter of the package which decreases as the yarn is withdrawn.
  • a preferred embodiment of the invention consists of a retarding strip of fabric.
  • One end of the fabric is attached to a fixed fastening bracket which is spaced from a horizontally supported yarn package and extends parallel to the longitudinal axis of the package.
  • the bracket and fabric strip extend over the entire length of the yarn package.
  • the fabric retarding strip extends from the fastening bracket around the yarn package in the direction of rotation of the thread being unwound from the stationary package.
  • the retarding strip is maintained in contact with the peripheral surface of the yarn package through an angle of at least 270.
  • the thread being withdrawn from the package rotates about the package and entrains the retarding strip in such a way that, even during a package diameter reduction, the retarding strip is kept in contact with periphery of the package to exert the desired pressure on the package and the required tension on the thread being withdrawn.
  • the apparatus is constructed so that the surplus portion of the retarding strip, which accumulates as the package diameter decreases, is collected between the fixed fastening bracket and the periphery of the package. In this way, it is possible to have a large number of packages positioned in close arrangement, as in a creel.
  • FEGURE l is a perspective view of the apparatus according to the invention showing a full yarn package prior to initial yarn withdrawal.
  • FIGURE 2 is a view which shows two horizontally sup- 4- ported yarn packages employing the unique apparatus of this invention during a yarn supplying operation.
  • FIGURE 3 is a view which shaws the apparatus of the present invention mounted on a yarn package support means with the retarding strip opened for better illustration of the individual parts of the invention.
  • FIGURE 4 is a view which shows, on a larger scale, a schematic presentation of a horizontal slit which is utilized to enable plural supply packages to be attached by means of a transfer tail.
  • FIGURE 1 a full yarn package 1 which is placed on a supporting peg 3 attached substantially horizontally to a framework or creel support means 2.
  • the framework 2 forms part of a generally known warping creel (not shown).
  • the creel contains a large number of yarn packages from which yarn,is unwound over the ends thereof while the packages are maintained stationary.
  • the thread ends from the individual yarn supply positions are fed through a series of thread guides to a warping beam where they are collected in a sheet of parallel threads.
  • Attached to the support peg 3 is a fixed fastening bracket 4 to which is attached one end 5 of a fabric retarding strip 6.
  • the particular material used in the fabrication of the strip may vary.
  • the present invention utilizes a fused nylon fabric to form the retarding strip.
  • the retarding strip extends about and encompasses the yarn package 1.
  • Bracket 4 is provided with pins 7 and the trailing end 9 of the retarding strip is provided with holes 8 which cooperate to attach the trailing end of the strip to the fixed bracket 4.
  • the width of the retarding strip 6 is slightly greater than the actual length of the yarn package 1.
  • the retarding strip extends about the package through an angle of 360, and is in contact with the package over approximately the same distance.
  • the length of the retarding strip is somewhat greater than the circumference of the full package.
  • the excess length of the strip referred to in FIGURE 2 by numeral 13, is collected as it accumulates during thread withdrawal from the yarn package in the space between the fastening bracket 4 and the outer surface of the package.
  • the retarding strip 6 extends from the fastening bracket in the direction of rotation of the thread 11 being unwound from the stationary package 1.
  • the thread is fed by way of thread guide 12 to a warper beam or knitting machine (not shown).
  • the strip 6 may be provided with a plurality of sewn pleats 13 into which pieces of metal may be inserted.
  • a tensioning strip 14 is sewn to the retarding strip 6.
  • the tensioning strip also extends in the direction of rotation of the yarn and is attached to a tensioning bracket 16, which is biased in the same direction by a weight 15 rotatably afiixed about the support peg 3 and connected to the tensioning bracket 16.
  • the tensioning strip 14 may be made of the same fabric as that of the retarding strip 6.
  • the diameter of the package gradually decreases.
  • the effect of this decrease on the apparatus of the invention can best be seen in the right hand package of FIGURE 2.
  • the retarding strip 6 remains in contact with the package at an angular distance of approximately 360 due to the pressure exerted by the tensioning strip 14 and the weighted pleats 13. Additionally, the rotary motion of the thread 11, as it is pulled from the fixed yarn package, tends to entrain the retarding strip.
  • the end of the retarding strip which is attached to the fixed bracket 4 by means of pins 7 and holes 8 accumulates in the space between the peripheral surface of the package and the bracket 4. This accumulation is collected in the form of pleats 10.
  • weight swings downward-from its approximately horizontal initial position, thus raising tensioning bracket 16, which in turn maintains a uniform pressure of the retarding strip on the surface of the yarn package by means of tensioning strip 14.
  • tensioning bracket 16 which in turn maintains a uniform pressure of the retarding strip on the surface of the yarn package by means of tensioning strip 14.
  • the weight 15 will be in approximately a vertical position and no longer exert any appreciable force on the tensioning strip. The operation of'weight 15 insures that during the entire unwinding process, the yarn package and the thread unwound therefrom are subjected to the desired pressure independent of the outside diameter of the package.
  • FIGURE 2 shows a warping creel thread supply position composed of two horizontally supported yarn packages 18 and 19.
  • the supply point serviced by these two packages feeds a single thread to the warping beam.
  • the thread shown being supplied is unwound from package 18, and package 19 serves as a reserve package for the supply of thread after package 18 is exhausted.
  • yarn package 18 is provided with a transfer tail 20 which is tied to the initial .thread length 21 of the package 19.
  • Package 19 is in turn provided with a transfer tail which, after the empty bobbin 17 of package 18 has been removed, is tied to the initial thread length of a full package to be mounted on the empty peg.
  • each retarding strip 6 is provided with a longitudinal slit 22.
  • the retarding strip 6 is held together at the slit 22 by the provision of a U-shaped, hairpin-like resilient member 25.
  • the U-shaped member is inserted into two hems sewn into the retarding strip adjacent the slit 22. When member is in position, the slit is unrestricted throughout the width of the retarding strip 6 and allows passage of the transfer tail during yarn package changeover.
  • the transfer tail Because of the open end 23 of the U-shaped member, the transfer tail, which has been aligned with the strip prior to initial start-up of the warping operation, is allowed to pass free of the retarding strip 6 during the thread transfer.
  • the slit 22 may be closed over about one-fourth of its length, which distance is indicated by numeral 26.
  • FIGURE 3 illustrates a thread support position from which a yarn package has been removed and the retarding strip device opened up. In this view of the apparatus, a better view of the relationship of the individual parts can be seen.
  • FIGURE 4 is illustrated, on a larger scale, a schematic diagram of the construction of the retarding strip 6 at the transfer tail slit 22.
  • the U-shaped member 25 is shown inserted into the pleats formed adjacent the slit.
  • the inside of the retarding strip 6 adjacent the slit 22 may be provided with a closing strip 27 which shuts off the slit 22 from the surface of the yarn package 1.
  • the closing strip 27 may also be covered with fur, as shown at 28, to prevent abrasion of the yarn during its removal from the yarn supporting pirn.
  • An apparatus for preventing snarls and tangles in a twisted yarn during end-wise removal of the yarn from a substantially cylindrical yarn package supported by a yarn support means said apparatus being attached to said yarn support means and comprising substantially a horizontal peg attached at its base to said yarn package support means and having a free end to receive a yarn package thereon, a fixed fastening bracket attached to the base of the horizontal peg and having an arm extending the length of the yarn package and being spaced from the outer periphery thereof, a fabric retarding strip having one end attached to and extending the length of said arm, said retarding strip completely encircling the outer periphery of a full yarn package and extending from said fastening bracket arm in the same direction as the rotation of yarn thread during removal from said yarn package, the other end of said retarding strip being removably attached to said fastening bracket arm, a tensioning strip having one end secured to said retarding strip intermediate the ends thereof, the other end of said tensioning strip secured to the arm of a weight
  • An apparatus for preventing entanglement of twisted yarn during end-wise removal of the yarn from a fixed, substantially cylindrical yarn package which consists of yarn retarding means surrounding the circumferential surface of the yarn package, said means being contiguous with at least three-fourths of said surface at all times during yarn removal, said yarn retarding means contacting substantially the same percentage of surface area of the yarn package throughout the period of removal of yarn therefrom, said yarn retarding means being composed of a strip of fabric having a width at least as great as the axial length of said cylindrical yarn package and having a length at least as great as the circumference of said package when it is full of yarn, fastening means for circumferentially positioning said strip of fabric with respect to said yarn package, and tensioning means for maintaining said strip in contact with the circumferential surface of said yarn package, said tensioning means consisting of a length of material secured at one end to said strip intermediate the length of said strip, the other end of said material secured to a biasing means rotatable about the axis of said yarn package, said biasing means
  • Apparatus as defined in claim 6 in which the inner supply of yarn can be maintained upon exhaustion of said surface of said strip adjacent said fastening means and yarn package.
  • the opposing circumferential surface of the yarn form a material receiving area for collecting circumferential eX- References Cited y the Examine! cess of said strip caused by decrease in the yarn package 5 FOREIGN PATENTS diameter during yarn removal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Package Frames And Binding Bands (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Woven Fabrics (AREA)
  • Warping, Beaming, Or Leasing (AREA)
US454589A 1964-05-16 1965-05-10 Yarn tensioning device Expired - Lifetime US3307805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6405516A NL6405516A (enExample) 1964-05-16 1964-05-16

Publications (1)

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US3307805A true US3307805A (en) 1967-03-07

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Application Number Title Priority Date Filing Date
US454589A Expired - Lifetime US3307805A (en) 1964-05-16 1965-05-10 Yarn tensioning device

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US (1) US3307805A (enExample)
AT (1) AT260078B (enExample)
DE (1) DE1535151A1 (enExample)
ES (1) ES312055A1 (enExample)
GB (1) GB1109485A (enExample)
NL (1) NL6405516A (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428269A (en) * 1965-07-16 1969-02-18 Ici Ltd Method of unwinding yarn from packages arrayed in series
US3720383A (en) * 1971-02-18 1973-03-13 Fmc Corp Timed supply roll braking
US3976261A (en) * 1974-10-16 1976-08-24 Evolution Sa Belt-type thread-supply apparatus
US4396168A (en) * 1981-02-24 1983-08-02 Allied Corporation Multiple package thread transfer alignment guide system
DE3523978A1 (de) * 1984-07-06 1986-01-16 HITCO, Newport Beach, Calif. Anordnung zum liefern eines unter zugspannung stehenden laenglichen teiles
US5639043A (en) * 1995-10-27 1997-06-17 Baird; Terry Alexander Despooled filament tension control device
US8453957B2 (en) 2010-12-22 2013-06-04 Richard V. Zollinger Yarn package halter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713748U1 (de) * 1987-10-13 1987-12-10 Hacoba Textilmaschinen Gmbh & Co Kg, 5600 Wuppertal Antikringeleinrichtung für den Überkopfabzug stark gedrehten Garns
JP2883710B2 (ja) * 1990-09-28 1999-04-19 津田駒工業株式会社 パッケージの解舒張力付与装置
DE29702151U1 (de) * 1997-02-08 1998-06-10 Sucker-Müller-Hacoba GmbH & Co., 41066 Mönchengladbach Vorrichtung zur Begrenzung von Fadenballonen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1110436A (fr) * 1954-08-31 1956-02-13 Thomson Houston Comp Francaise Dispositif de freinage par bande des bobines de fil pour dévidage à tension constante

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1110436A (fr) * 1954-08-31 1956-02-13 Thomson Houston Comp Francaise Dispositif de freinage par bande des bobines de fil pour dévidage à tension constante

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428269A (en) * 1965-07-16 1969-02-18 Ici Ltd Method of unwinding yarn from packages arrayed in series
US3720383A (en) * 1971-02-18 1973-03-13 Fmc Corp Timed supply roll braking
US3976261A (en) * 1974-10-16 1976-08-24 Evolution Sa Belt-type thread-supply apparatus
US4396168A (en) * 1981-02-24 1983-08-02 Allied Corporation Multiple package thread transfer alignment guide system
DE3523978A1 (de) * 1984-07-06 1986-01-16 HITCO, Newport Beach, Calif. Anordnung zum liefern eines unter zugspannung stehenden laenglichen teiles
US5639043A (en) * 1995-10-27 1997-06-17 Baird; Terry Alexander Despooled filament tension control device
US8453957B2 (en) 2010-12-22 2013-06-04 Richard V. Zollinger Yarn package halter

Also Published As

Publication number Publication date
DE1535151A1 (de) 1970-09-17
AT260078B (de) 1968-02-12
ES312055A1 (es) 1965-07-01
NL6405516A (enExample) 1965-11-17
GB1109485A (en) 1968-04-10

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