US3259334A - Method and apparatus for reducing fuzzing and breaking of strands - Google Patents

Method and apparatus for reducing fuzzing and breaking of strands Download PDF

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Publication number
US3259334A
US3259334A US340202A US34020264A US3259334A US 3259334 A US3259334 A US 3259334A US 340202 A US340202 A US 340202A US 34020264 A US34020264 A US 34020264A US 3259334 A US3259334 A US 3259334A
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US
United States
Prior art keywords
yarn
bobbin
edge
slope
strands
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
US340202A
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English (en)
Inventor
Roy E Smith
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.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
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 Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Priority to US340202A priority Critical patent/US3259334A/en
Priority to GB757/65A priority patent/GB1044330A/en
Priority to BE658379D priority patent/BE658379A/xx
Priority to FR2176A priority patent/FR1420998A/fr
Priority to NL6500572A priority patent/NL6500572A/xx
Priority to LU47809D priority patent/LU47809A1/xx
Priority to DE19651510820 priority patent/DE1510820A1/de
Priority to FI650175A priority patent/FI44876C/fi
Application granted granted Critical
Publication of US3259334A publication Critical patent/US3259334A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • 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 method and apparatus for reducing fuzzing and breaking of strands generally and more particularly to a method and means for reducing fuzzing and breaking of strands being twisted on a bobbin af-ter being delivered via a traveler apparatus.
  • twisting or plied yarns 0r strands are normally collected on bobbins or collectors having a generally cylindrical surface. In order to prevent the collected yarn or strand from sliding on of these generally cylindrical surfaces it has been conventional practice in the past to provide yarn traps on the cylindrical bobbin to prevent the slippage.
  • Another object of the invention resides in the use of improved collector apparatus to place the strands or yarns on a bobbin body or barrel.
  • Another object of the invention resides in the provision of an improved yarn trap that will prevent abrasion or breaking of the yarn when it is discharged from the bobbin barrel while still retaining the collected package on the bobbin barrel during normal handling procedures.
  • Another object of this invention is to provide a method for collecting and discharging yarn or strands which greatly increases the continuity of the yarn or strand for use in a final textile process.
  • FIG. 1 is an isometric view of a portion of a textile strand or yarn twisting or processing apparatus with which the method and apparatus of this invention has particular utility;
  • FIG. 2 is a front elevational view of -a bobbin or collector illustrating an embodiment of the teachings of this invention
  • FIG. 3 is an enlarged cross sectional view of FIG. 2 taken at lines 33;
  • FIGS. 4, 5 and 6 are side elevational views of prior art bobbins utilizing various types of yarn traps
  • FIG. 7 is a plan view of a bobbin in place during a collecting process
  • FIG. 8 is a cross sectional plan view of a bobbin barrel showing angular relations of the strand, traveler and barrel;
  • FIG. 9 is a sketch trigonometrically relating the distances and angles of FIG. 8.
  • FIG. 1 there is illustrated a conventional type of twister or twister apparatus 10 for processing filamentary materials.
  • the apparatus 10 is inclusive of a frame structure comprising spaced housings 12, one at each end of the apparatus, one of which is illustrated in FIG. 1, the end housings being connected by bolster rails 14, one of which is shown in FIG. 1, and a supply package mounting structure 16 and other frame members (not shown).
  • the structure 16 is equipped with a plurality of mandrels or supports (not shown), each mandrel arranged to support a supply package 20 of textile strand, yarn or filamentary material 22 to be twisted or processed through the use of the apparatus.
  • a bolster rail 14 is arranged at each side of the machine, one being shown in FIG. 1, each bolster rail supporting a plurality of bushing members or spindle mounting units 24.
  • the spindles (not shown) are arranged to be driven simultaneously by a single drive belt or tape 56 diposed for engagement with whorls 38.
  • Idler rollers 58 are disposed adjacent the driving belt 56 and the whorls 38 and are relatively movable by conventional means (not shown) for moving the drive belt toward or away from an individual spindle to selectively establish or interupt a drive to such spindle.
  • the belt 56 extends lengthwise of the apparatus and is engaged with a drive pulley 62 mounted upon a shaft 64 driven by an electrically energizable motor 66 through power transmission mechanism or gearing of convention construction contained within a housing 68.
  • the motor 66 is mounted upon a supplemental frame 70 adjacent one end of the twister apparatus.
  • the twister apparatus includes ring rails 72, one at each side, arranged to be reciprocated in a vertical direction by conventional means (not shown) driven by the motor 66.
  • the ring rail 72 is provided with circular openings 74 to accommodate the spindles and bobbins driven thereby, each circular opening being defined by a circular track 76 mounting a traveler or fiyer 78 which is freely rotatable around the spindle and bobbin through which the strand or yarn 22 is threaded in the conventional manner.
  • the twister apparatus includes a feed roll unit 80 of conventional character individual to each strand or yarn 22 for feeding the same from the package 20 at a speed at which the strand or yarn is to be wound upon a bobbin.
  • each of the units 80 is driven from a shaft 84 rotated by a belt 86 from power transmission mechanism of conventional character enclosed in a housing 88 driven by mechanism in the housing 68 through pulleys and a belt 90.
  • Each of the units 80 is constructed and arranged to interrupt the feed of a strand in the event of breakage.
  • Each of the spindles is arranged to mount or support a bobbin or collector 94 upon which strand or yarn is wound.
  • bobbins currently being used are fashioned of molded resinous material or plastic of rigid character having a comparatively thin wall.
  • the lower end of the bobbin 94 may be fashioned with a circular flange 96 forming an abutment for filamentary material wound upon the bobbin barrel.
  • the conven tional type of bobbin fashioned of molded resinous material is usually fashioned with an exterior surface 98 of generally cylindrical shape.
  • yarn traps have been formed on the surface or into the surface 93 of the bobbin barrel to prevent the entire package or portions of the package from slipping during collection or discharge.
  • the prior art yarn traps usually comprised one or more series of fine serrations such as 110 in FIG.
  • FIGS. 2 and 3 there is illustrated an embodiment of applicants invention which prevents the abrading, fuzzing and/ or breaking of the strands or yarns during either the collecting or discharge process.
  • One or more yarn traps 100 have been formed in or on the surface 98 of the bobbin barrel. When a series of the yarn traps 100 are formed in the surface 98 of the bobbin barrel they may be viewed either as successive ridges or successive grooves. From either view however, the most important feature of each of the yarn traps is the gradually inclined slope of the discharge edge of the trap.
  • the yarn trap embodying the features of this invention comprises a gradually inclined discharge slope 101.
  • a gradually declining slope on the opposite edge of the yarn trap 102 also aids :in avoiding abrasion of the yarn as it is being collected on the bobbin.
  • yarn traps are shown in the drawings as isosceles trapezoids in cross section for purposes of clarity, that other configurations which include the features hereinbefore described are to be considered within the scope of this invention.
  • one or more yarn traps may be constructed on the bobbin barrel which would appear in cross section as a sine wave. It is obvious that yarn traps formed in this manner would achieve substantially the same results as the specific embodiment shown, since the features of a gradually inclining slope, at gradually declining slope, and substantially flat portions at the peaks and valleys of successive yarn traps would approximate that shown and would furnish the same results.
  • FIG. 7 discloses an enlarged plan view of the ring rail 72 with the circular open ing 74 which is defined by a circular track 76 mounting a traveler or flyer 78 which is freely rotatable around the spindle and bobbin 94.
  • the strand or yarn 22 is threaded through the traveler 78 and thence proceeds around the barrel 94-.
  • FIG. 8 there is shown a cross sectional view of the barrel 94.
  • the strand 22 makes tangential contact with the barrel surface 98 at a point thereby defining a line between the tangential contact point 130 and the center 131 of the barrel section shown.
  • the distance between the points 130 and 131 is, of course, the radius of the barrel R as shown in FIG. 9. Another line is defined between the strand contact point at the traveler 78 and the center 131 of the barrel section, the distance between these two points being the radius R, of the circle defined by the rotation of the traveler 78 around the bobbin barrel.
  • the radius R and the strand 22 define an angle 0.
  • Applicants method and apparatus herein provides that the ratio of R to R must be at least .45 to avoid the fuzzing and breaking caused by the individual filament making direct sharp angular engagement with the traveler surface.
  • the ratio of R to R just expressed is, of course, the sine of the angle 0. Therefore, if the ratio of R to R is to be .45 or larger then the angle 0 must be at least approximately 27 or larger to avoid the fuzzing and breakage of the past.
  • a method for reducing fuzzing and breaking of strands during a twisting process which comprises a step of forming an angle of at least 27 between a first line extending through a longitudinal axis of a cylindrical bobbin body and a strand contact point on a traveler circling said bobbin body, and a second line extending through the strand contact point on the traveler and a tangential contact point of the strand on the bobbin body.
  • the method further includes the steps of forming a yarn trap around the cylindrical bobbin body and smoothing the discharge edge of the trap to a gradually inclined slope.
  • the invention utilizes a textile bobbin having a generally cylindrical body for receiving a yarn package wherein the yarn receiving surface of the body has at least.
  • the discharge edge of the yarn trap has a gradually inclined slope and may advantageously be extended circumferentially around the body and have a groove-shaped section.
  • the other edge of the groove-shaped section may advantageously have a gradually declining slope.
  • the groove-shaped section may also advantageously have a substantially flat bottom separating the inclined and declined slopes. If a plurality of yarn traps are formed in the textile bobbin the inclined slope edge of a first groove-shaped section may be ad vantageously separated from a declined slope edge of a successive groove section by a substantially fiat portion along the same section plane of the generally cylindrical body.
  • the yarn traps may also be defined as a series of one or more ridges formed in the cylindrical body.
  • the discharge edge of the ridge is gradually inclined, the peak of the ridge advantageously has a substantially flat portion, and the other edge of the ridge is advantageously gradually declined to aid in avoiding abrasion and breaking of the yarn during collection or discharge.
  • Further apparatus for practicing this invention may include the provision of a bobbin body in which the ratio of the smallest radius of a cross section of the bobbin body to the radius of a helix or a circle defined by the path of movement of a traveler around the bobbin body is never less than .45.

Landscapes

  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US340202A 1964-01-27 1964-01-27 Method and apparatus for reducing fuzzing and breaking of strands Expired - Lifetime US3259334A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US340202A US3259334A (en) 1964-01-27 1964-01-27 Method and apparatus for reducing fuzzing and breaking of strands
GB757/65A GB1044330A (en) 1964-01-27 1965-01-07 An improved textile bobbin
FR2176A FR1420998A (fr) 1964-01-27 1965-01-15 Procédé et appareil pour réduire le duvetage et les cassures d'un fil ou d'un toron
BE658379D BE658379A (no) 1964-01-27 1965-01-15
NL6500572A NL6500572A (no) 1964-01-27 1965-01-18
LU47809D LU47809A1 (no) 1964-01-27 1965-01-19
DE19651510820 DE1510820A1 (de) 1964-01-27 1965-01-21 Verfahren und Einrichtung zum Reduzieren des Zerfaserns und Brechens von Straengen
FI650175A FI44876C (fi) 1964-01-27 1965-01-26 Puolaholkki.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US340202A US3259334A (en) 1964-01-27 1964-01-27 Method and apparatus for reducing fuzzing and breaking of strands

Publications (1)

Publication Number Publication Date
US3259334A true US3259334A (en) 1966-07-05

Family

ID=23332322

Family Applications (1)

Application Number Title Priority Date Filing Date
US340202A Expired - Lifetime US3259334A (en) 1964-01-27 1964-01-27 Method and apparatus for reducing fuzzing and breaking of strands

Country Status (8)

Country Link
US (1) US3259334A (no)
BE (1) BE658379A (no)
DE (1) DE1510820A1 (no)
FI (1) FI44876C (no)
FR (1) FR1420998A (no)
GB (1) GB1044330A (no)
LU (1) LU47809A1 (no)
NL (1) NL6500572A (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361381A (en) * 1966-11-22 1968-01-02 Livingstone Stanley Winding core
US3860194A (en) * 1973-05-21 1975-01-14 Ppg Industries Inc Bobbin for textile fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109399392A (zh) * 2018-11-26 2019-03-01 徐州海晟纺织有限公司 一种混纺纱的存放架

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459727A (en) * 1922-04-18 1923-06-26 Fred B Guyette Bobbin-antisplitting device
US2551462A (en) * 1949-09-10 1951-05-01 Alexander Smith & Sons Carpet Yarn twister or pliers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459727A (en) * 1922-04-18 1923-06-26 Fred B Guyette Bobbin-antisplitting device
US2551462A (en) * 1949-09-10 1951-05-01 Alexander Smith & Sons Carpet Yarn twister or pliers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361381A (en) * 1966-11-22 1968-01-02 Livingstone Stanley Winding core
US3860194A (en) * 1973-05-21 1975-01-14 Ppg Industries Inc Bobbin for textile fibers

Also Published As

Publication number Publication date
FI44876C (fi) 1972-01-10
FI44876B (no) 1971-09-30
FR1420998A (fr) 1965-12-10
NL6500572A (no) 1965-07-28
LU47809A1 (no) 1965-07-19
GB1044330A (en) 1966-09-28
BE658379A (no) 1965-07-15
DE1510820A1 (de) 1970-03-12

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