US3295181A - Yarn texturing apparatus - Google Patents

Yarn texturing apparatus Download PDF

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Publication number
US3295181A
US3295181A US319294A US31929463A US3295181A US 3295181 A US3295181 A US 3295181A US 319294 A US319294 A US 319294A US 31929463 A US31929463 A US 31929463A US 3295181 A US3295181 A US 3295181A
Authority
US
United States
Prior art keywords
yarn
draw pin
draw
pin
gears
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
US319294A
Other languages
English (en)
Inventor
Euell K Mcintosh
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.)
Monsanto Co
Original Assignee
Monsanto Co
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
Priority to NL131083D priority Critical patent/NL131083C/xx
Application filed by Monsanto Co filed Critical Monsanto Co
Priority to US319294A priority patent/US3295181A/en
Priority to GB42760/64A priority patent/GB1043820A/en
Priority to NL6412385A priority patent/NL6412385A/xx
Priority to IL22328A priority patent/IL22328A/en
Priority to SE12879/64A priority patent/SE303566B/xx
Priority to LU47217D priority patent/LU47217A1/xx
Priority to DK529764AA priority patent/DK112188B/da
Priority to CH1394664A priority patent/CH428509A/fr
Priority to FR993059A priority patent/FR1412835A/fr
Priority to DE1435586A priority patent/DE1435586B2/de
Priority to BE654954D priority patent/BE654954A/xx
Application granted granted Critical
Publication of US3295181A publication Critical patent/US3295181A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/225—Mechanical characteristics of stretching apparatus
    • D02J1/226—Surface characteristics of guiding or stretching organs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B21C47/10—Winding-up or coiling by means of a moving guide
    • B21C47/14—Winding-up or coiling by means of a moving guide by means of a rotating guide, e.g. laying the material around a stationary reel or drum

Definitions

  • the present invention concerns apparatus for drawing yarn, and more particularly to such apparatus incorporating a novel and improved draw pin construction.
  • spun yarn is fed at a given speed to a drawing region and is simultaneously withdrawn therefrom at a higher speed, as by a draw roll, thereby elongating or drawing the yarn to orient the molecules in the individual filaments.
  • Greater yarn uniformity and improved yarn properties result from wrapping one or more turns of the yarn around a fixed draw pin located in the draw region, to localize the point at which the yarn necks down to a smaller diameter.
  • Known draw pins are typically provided with a ceramic cylindrical surface having closely controlled surface frictional characteristics.
  • Constant running of the yarn on a given path on the draw pin polishes the surface of the pin, changing the frictional characteristics of this path and causing the yarn to tend to shift axially along the draw pin to a new equilibrium position presenting lower frictional drag on the yarn. If the draw pin axis were parallel to the draw roll axis, the yarn would eventually shift entirely off the draw pin, or sufficiently far that the yarn would slip off the end of the draw roll. The draw pin was accordingly mounted to be skewed with respect to the axis of the draw roll, to
  • these difliculties are minimized by a particular draw pin construction having means on the draw pin to positively locate the yarn within certain limits in a direction parallel to the draw pin axis.
  • a primary object of the invention is to provide yarn drawing apparatus including means on the draw pin for guiding the yarn.
  • a further object is to provide a draw pin of the above character which permits substantially increased draw pin life before maintenance is required.
  • a further object is to provide a draw pin of the above character which permits the feed rolls and the draw rolls to be narrower and more compact.
  • a further object is to provide a draw pin of the above character which distributes the wear along the surface of the draw pin.
  • a further object is to provide a draw pin of the above character which permits the yarn to shift axially along the draw pin only within given limits.
  • a further object is to provide a draw pin of the above character which arranges the yarn into a filament sheet particularly adapted and oriented for introduction into the nip of a pair of meshed texturing gears.
  • FIGURE 1 is a schematic perspective view of draw texturing apparatus including a preferred draw pin constructed according to the present invention.
  • FIGURE 2 is a perspective view of an alternative embodiment of the draw pin.
  • yarn 20 is supplied from a suitable yarn source 22 (illustrated as a spin cake) by a feed mechanism, illustrated as a pair of driven feed rolls 24, and may be guided to feed rolls 24 by a conventional guide element 26 if desired.
  • Yarn 20 next passes around a rigidly mounted draw pin 28, which may be electrically heated if desired, and then through a drawing means, illustrated as a pair of driven meshed gears 30 and 32 which simultaneously draw and texture the yarn.
  • a drawing means illustrated as a pair of driven meshed gears 30 and 32 which simultaneously draw and texture the yarn.
  • an ordinary draw roll with an associated separator roll, or a pair of nip-forming rolls similar to those illustrated at 24, may be used instead of gears 30 and32 if texturing is not desired.
  • the peripheral speed of gears 30 and 32 is higher than the periphenal speed of feed rolls 24 so that yarn 20 is drawn or elongated in the drawing region between feed rolls 24 and gears 30 and 32.
  • the drawn yarn is next passed through a conventional guide 34 to a suitable take-up mechanism 36, which may be of any desired type although a yarn twister take-up is preferred and is illustrated.
  • draw pin 28 includes a cylindrical body portion having its axis mounted substantially parallel to the axes of feed rolls 24 and of gears 30 and 32.
  • Draw pin 28 may be rigidly mounted on a support or frame member 39 by any suitable attaching means, such as by the illustrated stud 37.
  • the entire draw pin 28 may be of ceramic construction, in its preferred construction the body of the draw pin is formed of a metal, for example aluminum, and has applied to its cylindrical outer surface an appropriate ceramic coating in order to provide suitable durability or resistance to the abrasive effect of the yarn.
  • a helical radially extending raised ridge or thread 38 is provided on the coated cylindrical surface 40 of draw pin 28, to positively separate adjacent wraps of the yarn and to limit movement of the yarn along the axis of the draw pin.
  • ridge 38 defines with the cylindrical surface 40 of draw pin 28 a flat-bottomed helical groove 42 in which yarn 20 runs. Ridge 38 should extend radially above surface 40 sufficiently to positively locate yarn 20 within groove 42, i.e., ridge 38 preferably has a radial extent greater than the thickness of yarn 20. The axial distance on draw pin 28 between adjacent turnsof ridge 38, i.e., the width of groove 42, should be several times the thickness of yarn 20, for reasons which will be explained below.
  • yarn 20- when strung up will assume an equilibrium position within groove 42, so that yarn 20 upon leaving draw pin 28 is delivered to gears 30 and 32.
  • the surface characteristics of the groove in the path contacted by the yarn are slightly modified due to the abrasive action of the yarn.
  • the portion of the groove abraded by the yarn will be slightly polished, increasing its coefiicient of friction and applying a slightly higher draw to the yarn. Since the axis of drawpin 28 is substantially parallel to the axes of feed rolls 24 and of gears 30 and 32, yarn 20 is free to shift its path along the axis of draw pin 28 to any position in groove 42, in seeking a new equilibrium position presenting a minimum draw on the yarn.
  • the entire bottom of groove 42 may thus be polished by the yarn before refinishing of the draw pin surfaceis necessary, rather than a path merely the Width of the yarn -as is conventional.
  • a further particular feature in the illustrated apparatus is that yarn 20, upon leaving draw pin 28, is formed into a filament sheet properly oriented to enter the nip formed by gears 30 and 32 with a minimum danger of breakage of the filaments by the closely meshed teeth. As it leaves draw pin 28, yarn 20 is limited in its movement in either direction parallel to the axis of draw pin 28 by the ridge 38, and thus leaves the draw pin at a position within the limits determined by the width of groove 42. If the apparatus is properly aligned, gears 30 and 32 need have an axial thickness only a little larger than the width of groove 42.
  • the full advantages of the invention are best achieved when the axes of the draw pin, the feed rolls, and the texturing gears or other drawing rolls are all substantially parallel, particularly when these elements are mounted near one another.
  • the illustrated feed rolls 24, which form a nip for gripping the yarn may be replaced by a conventional single feed roll with a cooperating slightly skewed separator roll.
  • the single feed roll axis is preferably parallel to the axis of draw pin 28. Positive separation of adjacent wraps and positive location of the yarn within limits is nevertheless provided by the guide means on the draw' pin even when the draw pin is skewed with respect to the feed rolls or the gears, which thus facilitates stringing up the yarn and reduces the need for critical alignment of the draw pin.
  • Draw pins according to the present invention provide a defined helical path on the cylindrical surface thereof for receiving the yarn.
  • the guide means which define the helical path positively locate the yarn on the draw pin within the path, thus facilitating initial stringup of the yarn.
  • apparatus for drawing a yarn said apparatus including yarn supply means feeding said yarn at a given rate to a drawing region, and means withdrawing said yarn from said drawing region at a higher rate than said given rate whereby said yarn is drawn, the combination therewith of:
  • said guide means includesraised wrap-separating means extending from said surface to define with said surface a generally helical path for said yarn.
  • Apparatus for drawing a yarn comprising in combination:
  • said yarn drawing means comprises a pair of meshed yarn texturing gears between which said yarn is passed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US319294A 1963-10-28 1963-10-28 Yarn texturing apparatus Expired - Lifetime US3295181A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NL131083D NL131083C (da) 1963-10-28
US319294A US3295181A (en) 1963-10-28 1963-10-28 Yarn texturing apparatus
GB42760/64A GB1043820A (en) 1963-10-28 1964-10-20 Yarn drawing apparatus
NL6412385A NL6412385A (da) 1963-10-28 1964-10-23
IL22328A IL22328A (en) 1963-10-28 1964-10-25 A device for stretching a spinner and a penis for stretching for it
SE12879/64A SE303566B (da) 1963-10-28 1964-10-26
LU47217D LU47217A1 (da) 1963-10-28 1964-10-27
DK529764AA DK112188B (da) 1963-10-28 1964-10-27 Apparat til strækning af filamenter.
CH1394664A CH428509A (fr) 1963-10-28 1964-10-28 Broche d'étirage pour appareil d'étirage de fibres synthétiques
FR993059A FR1412835A (fr) 1963-10-28 1964-10-28 Appareil pour l'étirage de fil
DE1435586A DE1435586B2 (de) 1963-10-28 1964-10-28 Streckstift
BE654954D BE654954A (da) 1963-10-28 1964-10-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US319294A US3295181A (en) 1963-10-28 1963-10-28 Yarn texturing apparatus

Publications (1)

Publication Number Publication Date
US3295181A true US3295181A (en) 1967-01-03

Family

ID=23241656

Family Applications (1)

Application Number Title Priority Date Filing Date
US319294A Expired - Lifetime US3295181A (en) 1963-10-28 1963-10-28 Yarn texturing apparatus

Country Status (10)

Country Link
US (1) US3295181A (da)
BE (1) BE654954A (da)
CH (1) CH428509A (da)
DE (1) DE1435586B2 (da)
DK (1) DK112188B (da)
GB (1) GB1043820A (da)
IL (1) IL22328A (da)
LU (1) LU47217A1 (da)
NL (2) NL6412385A (da)
SE (1) SE303566B (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060053605A1 (en) * 2004-09-10 2006-03-16 Belmont Textile Machinery Co., Inc. Apparatus and method for conditioning air-entangled yarn

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423211A (en) * 1944-12-16 1947-07-01 Lorin G Vanselow Yarn knitting guide
FR1043445A (fr) * 1950-11-15 1953-11-09 Glanzstoff Ag Procédé pour augmenter la solidité et pour réduire l'allongement de fils obtenus à partir de produits de condensation ou de polymérisation
US2736944A (en) * 1953-09-02 1956-03-06 John Bright & Brothers Ltd Means for stretching cords, yarns and the like
US3024516A (en) * 1959-05-18 1962-03-13 Chemstrand Corp Apparatus for treating filament yarn
GB934383A (en) * 1961-04-18 1963-08-21 Ici Ltd Textile drawing and drafting machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423211A (en) * 1944-12-16 1947-07-01 Lorin G Vanselow Yarn knitting guide
FR1043445A (fr) * 1950-11-15 1953-11-09 Glanzstoff Ag Procédé pour augmenter la solidité et pour réduire l'allongement de fils obtenus à partir de produits de condensation ou de polymérisation
US2736944A (en) * 1953-09-02 1956-03-06 John Bright & Brothers Ltd Means for stretching cords, yarns and the like
US3024516A (en) * 1959-05-18 1962-03-13 Chemstrand Corp Apparatus for treating filament yarn
GB934383A (en) * 1961-04-18 1963-08-21 Ici Ltd Textile drawing and drafting machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060053605A1 (en) * 2004-09-10 2006-03-16 Belmont Textile Machinery Co., Inc. Apparatus and method for conditioning air-entangled yarn
US20080110150A1 (en) * 2004-09-10 2008-05-15 Belmont Textile Machinery Co., Inc. Apparatus and method for conditioning air-entangled yarn
US7475459B2 (en) 2004-09-10 2009-01-13 Rhyne Jeffrey T Apparatus and method for conditioning air-entangled yarn
US7480969B2 (en) * 2004-09-10 2009-01-27 Rhyne Jeffrey T Apparatus and method for conditioning air-entangled yarn

Also Published As

Publication number Publication date
NL6412385A (da) 1965-04-29
IL22328A (en) 1968-01-25
DK112188B (da) 1968-11-18
SE303566B (da) 1968-09-02
DE1435586B2 (de) 1975-02-27
DE1435586A1 (de) 1969-03-06
CH428509A (fr) 1967-01-15
NL131083C (da)
GB1043820A (en) 1966-09-28
LU47217A1 (da) 1965-04-27
BE654954A (da) 1965-04-28

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