US3315904A - Winding yarn - Google Patents

Winding yarn Download PDF

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Publication number
US3315904A
US3315904A US404761A US40476164A US3315904A US 3315904 A US3315904 A US 3315904A US 404761 A US404761 A US 404761A US 40476164 A US40476164 A US 40476164A US 3315904 A US3315904 A US 3315904A
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US
United States
Prior art keywords
yarn
winding
traverse
package
rate
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.)
Expired - Lifetime
Application number
US404761A
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English (en)
Inventor
Hardee Glyndwr
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.)
British Nylon Spinners Ltd
Original Assignee
British Nylon Spinners Ltd
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
Application filed by British Nylon Spinners Ltd filed Critical British Nylon Spinners Ltd
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Publication of US3315904A publication Critical patent/US3315904A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • 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

  • the invention concerns improvements in or relating to winding yarns.
  • yarn is to be considered as relating to all funicular structures of a textile nature, whether composed of staple fibres or continuous filaments and it is to be considered as including monofilaments.
  • a desirable form of yarn package into which yarn may be wound is a cheese, such being a cylindrical-bodied, straight ended package wound on a bobbin such as a cyl-indrical tube.
  • the bobbin requires no end flanges although the cheese has no, or very slight, taper at either end. For economic reasons it is often desirable to wind large cheeses from yarn which is being forwarded at high speeds.
  • a cheese is formed by rotating the bobbin onto which the yarn is wound, and by laying the yarn thereon in layers of helical coils, the layers being produced by reciprocation of the approaching yarn to and fro axially of the bobbin by means of a traverse guide to which the required traverse motion is imparted.
  • Rotation of the bobbin may be either by direct drive of the spindle thereof, or by surface-drive from a drive roll held in contact with the yarn wound on the bobbin.
  • the yarn In order to obtain the required angle of lay of the yarn to form a stable cheese, the yarn has to be traversed at a suitable speed, depending upon the yarn take-up speed.
  • the maximum speed of traverse is dependent on the medesign, and therefore the yarn take-up speed may be restricted.
  • Bulging is usually greatest at about a quarter by weight of the Winding, and is present up to and somewhat beyond the mid point by weight of the winding. It results from the contraction of the outer layers on those inner layers which are not constrained by the bobbin. Bulging is unsightly and can lead to defective withdrawal of the yarn from the cheese.
  • a method. of winding yarn into the form of a cheese comprises winding-up the yarn on a bobbin that is rotated at a gradually decreasing rotational speed throughout the period of winding, and, independently of said winding up, traversing the approaching yarn to and fro axially of the bobbin to lay the yarn in a package of layers of helical coils, the rate of traversing being varied in such a way that it is not constant throughout the period of winding and that it attains the maximum rate at a time after about 15% and before about by weight of the yarn in the final package has been wound.
  • the invention comprises a cheese, as herein before defined, consisting of layers of helical coils wound in a package, the helix angle of some at least of the coils in those layers which lie between about the first 15% and about the last 25%, by weight of the yarn in the package being at least as great as that of any other of the coils in the package and greater than that of the coils in the said first 15%.
  • the rate of traverse is gradually (i.e. in the shape of a smooth curve in a graph plotting traverse speed against time or against weight of yarn wound) increased to reach a maximum around the time when a third of the package, by weight, has been wound, and thereafter is gradually decreased to nearly the same value at the time of doif, as it was at the start of winding.
  • rate of increase and decrease may be linear if some simplification of the mechanism may result. In certain cases some improvement in package shape may be obtained even if the rate of traverse is maintained at the maximum for the period of winding after the prescribed time.
  • the above-defined invention results from our finding that bulging can be cured by arranging for the maximum traverse rate to occur at about that point in the winding where the tendency to bulge is greatest.
  • the effective stroke length of the traverse (from the point-of-view of the length of the layers of yarn wound) will be least (for a given traverse guide-topackage distance), owing to the lag of the yarn behind the movement of the traverse guide: and furthermore, because the yarn is then in a more open helix, i.e. the helix angle of the coils is greater, the retractive forces in the yarn can more easily prevent axial spreading of the layer.
  • the helix of the coils at the ends of the layers will be varying between one direction and the other; and therefore the references to helix angle do not relate to the angles in those ends.
  • initial undercutting can be cured by arranging for the traverse rate initially to be low, because at low traverse rates the effective stroke length of the traverse will be nearer to the actual stroke length of the traverse guide.
  • a winding programme in which a gradual increase in traverse speed to a maximum, followed by a gradual decrease therefrom is used, has the further advantage that it leads to a reduction of wear and tear on the traverse mechanism, which is likely to be working close to its mechanical limits.
  • the extent of traverse rate variation required i.e. the starting rate and the maximum rate, have to be determined by experiment, and these variables will depend on the denier of the yarn, the speed at which the yarn is wound, the length of traverse stroke, the diameter of the bobbin on which the yarn is wound, and the weight of yarn required in a full package.
  • the required programming of the traverse rate can be effected by various means, e.g. by driving the traverse guide by a separate motor from that driving the spindle and by varying the speed of this separate motor by wellknown means, as, for instance, a cam.
  • the traverse could be driven from the spindle motor through a P.I.V. gearbox, suitably programmed.
  • the invention has proved to be of especial value in winding large cheeses of continuous filament nylon yarn at high speeds on the drawing machine. Such a process is desirable for economic reasons and is particularly difficult to achieve in the case of lower denier yarns, such as 60/20 nylon.
  • winding of such yarns can take place either with a surface drive or a direct drive to the spindle, in the latter case with provision for the reduction of the speed of the drive in order to compensate for package growth.
  • ribbon-breaking is necessary to avoid patterning at regions of the package during the period of winding.
  • FIGURE 1 is a frontal view of yarn being wound on a cheese
  • FIGURE 2 is a side view of such winding
  • FIGURE 3 is a diagram of a cheese showing bulging sides, wound according to the prior art
  • FIGURE 4 is a diagram of a cheese with a dished sides, wound according to the prior art
  • FIGURE 5 is a diagram of a cheese with straight sides and a flat surface, wound according to the invention.
  • FIGURE 6 is a graph of traverse speed against time for an embodiment of the invention.
  • FIGURE 7 is the cam profile for varying this speed of traverse according to that graph.
  • FIGURES l and 2 show a cheese wind-up on a nylon drawtwister, in diagrammatic form.
  • Drawn nylon yarn Y is forwarded from draw roll 1 and is wound in the form of cheese 3 on a bobbin as, for instance, a cylindrical former 5.
  • the cheese is rotated by surface drive from drive roll 7.
  • the yarn is traversed by traverse guide 9 which is reciprocated across the width of the cheese in a horizontal slot in traverse cam box 11.
  • a traverse roll inside the cam box and having a. helical groove therein for driving the traverse guide to and fro is rotated by motor 13.
  • the cheese shown in FIGURE 5 which is indicative of one wound according to the invention, has straight, slightly tapered sides and a flat surface.
  • the graph of FIGURE 6 shows how the rate of traverse may be gradually increased to a maximum at about /3 of the total winding time of the cheese and then gradu-- ally reduced.
  • FIGURE 7 shows the shape of cam for imparting such a programme to the traverse motor, according to known techniques.
  • a method of winding yarn into a cylindrical-bodied, straight-ended yarn package Wound on a bobbin comprising, winding yarn in layers of helical coils on a bobbin which is rotated at a gradually decreasing rotational speed throughout the period of winding traversing the yarn to and fro axially of the bobbin at a rate that is not constant throughout said period of winding by increasing the rate of traversing from its initial rate so that it attains the maximum rate at a time after about 15% and before about by weight of the yarn in the final package has been wound.
  • a method according to claim 1 further comprising gradually decreasing the rate of traversing after the maximum rate has been obtained.
  • a cylindrical-bodied, straight-ended yarn package wound on a bobbin in layers of helical coils, characterised by the helix angle of the coils in those layers which lie between about the first 15% and about the last 25% by weight of the yarn in the package is at least as great as the helix angle of any other of the coils in the package and is greater than the helix angle of the coils in the said first 15 5.
  • a yarn package according to claim 4 in which the first-mentioned helix angle is also greater than that of the coils in the said last 25% by weight of yarn in the package.
  • a yarn package according to claim 4 in which the helix angle of the coils gradually increases throughout the first layers of the package to the maximum angle in those layers at the end of about the-first one-third by weight of yarn in the package, and then gradually decreases throughout the subsequent layers.
  • a yarn package according to claim 6 having very 1O slightly tapered ends and consisting of drawn nylon yarn.

Landscapes

  • Winding Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US404761A 1963-10-22 1964-10-19 Winding yarn Expired - Lifetime US3315904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB41579/63A GB1022054A (en) 1963-10-22 1963-10-22 Improvements in or relating to winding yarns

Publications (1)

Publication Number Publication Date
US3315904A true US3315904A (en) 1967-04-25

Family

ID=10420350

Family Applications (1)

Application Number Title Priority Date Filing Date
US404761A Expired - Lifetime US3315904A (en) 1963-10-22 1964-10-19 Winding yarn

Country Status (7)

Country Link
US (1) US3315904A (de)
BE (1) BE654726A (de)
CH (1) CH434047A (de)
DE (1) DE1535096A1 (de)
GB (1) GB1022054A (de)
LU (1) LU47194A1 (de)
NL (1) NL140811B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552679A (en) * 1967-11-17 1971-01-05 Ici Ltd Yarn package
US4206884A (en) * 1979-06-06 1980-06-10 Owens-Corning Fiberglas Corporation Method and apparatus for forming a wound strand package
US4371122A (en) * 1980-02-29 1983-02-01 Fiberglas Canada, Inc. Method and apparatus for winding strand material and package
US4377263A (en) * 1981-06-18 1983-03-22 Monsanto Company Ribbon breaking method and apparatus
US4789112A (en) * 1986-08-09 1988-12-06 Barmag Ag Yarn winding method and resulting package

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1104818A (en) * 1909-06-07 1914-07-28 Charles P Mitchell Thread-package.
US2268554A (en) * 1940-06-01 1942-01-06 Abbott Machine Co Winding
US2539942A (en) * 1947-03-24 1951-01-30 American Enka Corp Production of cross wound bobbins
US3226047A (en) * 1963-03-07 1965-12-28 American Enka Corp Traversing drive apparatus
US3235191A (en) * 1963-08-29 1966-02-15 Monsanto Co Yarn winding process and yarn package

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1104818A (en) * 1909-06-07 1914-07-28 Charles P Mitchell Thread-package.
US2268554A (en) * 1940-06-01 1942-01-06 Abbott Machine Co Winding
US2539942A (en) * 1947-03-24 1951-01-30 American Enka Corp Production of cross wound bobbins
US3226047A (en) * 1963-03-07 1965-12-28 American Enka Corp Traversing drive apparatus
US3235191A (en) * 1963-08-29 1966-02-15 Monsanto Co Yarn winding process and yarn package

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552679A (en) * 1967-11-17 1971-01-05 Ici Ltd Yarn package
US4206884A (en) * 1979-06-06 1980-06-10 Owens-Corning Fiberglas Corporation Method and apparatus for forming a wound strand package
US4371122A (en) * 1980-02-29 1983-02-01 Fiberglas Canada, Inc. Method and apparatus for winding strand material and package
US4377263A (en) * 1981-06-18 1983-03-22 Monsanto Company Ribbon breaking method and apparatus
US4789112A (en) * 1986-08-09 1988-12-06 Barmag Ag Yarn winding method and resulting package

Also Published As

Publication number Publication date
LU47194A1 (de) 1964-12-22
NL140811B (nl) 1974-01-15
NL6412240A (de) 1965-04-23
BE654726A (de) 1965-04-22
DE1535096A1 (de) 1970-02-12
CH434047A (de) 1967-04-15
GB1022054A (en) 1966-03-09

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