US3446446A - Tying apparatus for toroidal objects - Google Patents

Tying apparatus for toroidal objects Download PDF

Info

Publication number
US3446446A
US3446446A US540951A US3446446DA US3446446A US 3446446 A US3446446 A US 3446446A US 540951 A US540951 A US 540951A US 3446446D A US3446446D A US 3446446DA US 3446446 A US3446446 A US 3446446A
Authority
US
United States
Prior art keywords
tying
wheel
cake
yarn
spinning
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
US540951A
Other languages
English (en)
Inventor
Hendrik De Bruin
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.)
Akzona Inc
Original Assignee
American Enka 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 American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US3446446A publication Critical patent/US3446446A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
    • B65H81/02—Covering or wrapping annular or like cores forming a closed or substantially closed figure
    • B65H81/04—Covering or wrapping annular or like cores forming a closed or substantially closed figure by feeding material obliquely to the axis of the core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
    • B65H81/02—Covering or wrapping annular or like cores forming a closed or substantially closed figure

Definitions

  • This invention relates to an apparatus for tying toroidalshaped objects, and more particularly apparatus especially adapted for tying spinning cakes a nomenclature known in the art signifying toroidal shaped composites of freshly spun filaments, threads or fibers of regenerated cellulose which are collected in a spinning pot or spinning centrifuge.
  • apparatus has been proposed to mechanically tie cakes and usually comprises a movable cake support and a circumferentially supported and driven tying wheel.
  • the tying wheel is in the form of a partly opened ring having an axis of rotation across that of the cake support and at right angles about halfway the height of a spinning cake held by the movable support.
  • the path of the wheel runs past the outside and inside of the thus supported cake and serves to lay a tying thread to secure the fibers in the cake in a manageable and closely related fashion.
  • the cake supporting surface is composed of two elements, one stationary and fixedly positioned on a second element being capable of performing a compound motion to the cake. This compound motion comprises intermittent lifting, slightly shifting and putting the cake down again after which the support resumes an initial starting position.
  • the apparatus comprises a rotatable disc on which are mounted a number of circularly arranged upwardly extending brackets, topmost of which form an interrupted annular cake supporting surface.
  • brackets When viewed from the axis of rotation of the supporting surface and at the level of the lowermost point of the path of the tying wheel, the brackets span angles of magnitude the sum of which is smaller than that of an angle which spans the interruption in the tying wheel. Best results are obtained if the brackets supported by the disc number eight in all, and a cake to be tied is placed on the supporting surface so that the axis of the spinning cake coincides with the axis of rotation of the disc.
  • the opening in the circumference of the tying wheel faces the space immediately above the cake supporting surface and is higher than the height of the cake.
  • the apparatus is especially suitable for tying spinning cakes of smaller core diameters and greater heights. This is permitted by providing a spool holder and a thread guide in periphery or inner rim of the tying Wheel.
  • a cake is placed on the supporting surface and the novel tying wheel rotates in such a manner, that part of its path runs through the centrally disposed opening (core) in the spinning cake. Since the supporting surface is placed on a number of upwardly extending brackets, the tying wheel moves between these brackets.
  • a free end of yarn being supplied from a tying yarn package (located on a spool attached to the tying wheel) is secured at a fixed point and subsequently pulled underneath the spinning cake and continuously unwinds from package when the tying wheel is rotated and is successively wound on the outside and inside of the spinning cake.
  • the surface has interruptions or spaces between the supporting brackets exactly positioned in places where the yarn passes underneath the cake.
  • the movement of the tying wheel relative to that of the support disc is intermittent and has means for properly indexing to permit the upwardly extending bracket-like rotatable cake support to pass through the plane of the tying wheel.
  • the positioning of the space between the ends of the tying wheel coincides with a single bracket of the support surface, and when rotated, the wheel passes be tween the brackets.
  • the tying wheel winds the yarn continuously on the circumference of the cake and in a different location.
  • Effective winding can also be realized if, after each revolution of the tying wheel, the upport is turned a distance Where the wheel passes between alternating spaces provided by the upwardly extending brackets. This could be done by deriving the movement of the support disc for the rotatable brackets from the movement of the tying wheel via a maltese cross or like means.
  • This construction is very complicated and thus, preference is given to the construction according to the invention wherein the rotatable support moves continuously.
  • Oonstruction according to the present invention also has at- 83 tendant advantages of higher winding speeds and less maintenance.
  • Difficulty previously encountered in fastening the leading end and the trailing end of the tying yarn may be avoided by providing the tying wheel or the rotatable disc with electric contact means.
  • the Contact can be set or adjusted to permit two consecutive revolutions of the rotatable disc, and then act to effectively cut out the supply of current to a self-braking motor driving the apparatus.
  • the motor stops the tying wheel in a position with the interruption in the wheel facing the annular supporting surface. In this position, the tied spinning cake may then be directly lifted and removed from the supporting frame.
  • the rotatable disc makes two revolutions during tying, the cake is tied twice.
  • Double tying appears to impart the same coherency to the spinning cake as would single tying and where the cake must be removed from the support to join yarn ends by manually tying in a knot. Double tying, in effect, results in complete mechanical fastening, and the time required is much shorter than having an operator remove and reposition the spinning cakes on the supporting surface by hand-a practice previously required when tying cakes.
  • Another advantage attendant with the present apparatus resides in means providing effective avoidance of a surplus of tying yarn being unwound from a supply spool or package.
  • the distance between the point of arrival of the tying yarn on the spinning cake and the thread guide attached to an inside the periphery of the wheel often differs from point to point. This distance alternately increases and decreases. When the distance decreases, there will be a surplus of tying yarn unwound from the spool. This surplus of yarn will then hang down in a loop and will subsequently be tightened.
  • the disadvantage of loosely hanging yarn is in that the threads in the cake will not be held tightly together and will shift, forming oddly shaped and deformed cakes which are very difficult to handle in subsequent operations, such as washing, dyeing, drying, and the like.
  • a lengthcompensating device is provided inside the tying wheel of the present apparatus, and any surplus yarn will constantly be taken up.
  • the length-compensating device comprises a weak spring which makes it possible to maintain the tension of the tying yarn during tying practically constant. Accordingly, yarn layer shifting on the spinning cakes is effectively prevented.
  • FIGURE 1 shows a frontal, partially cutaway view of the apparatus accordinging to the present invention
  • FIGURE 2 shows a detail of said apparatus in plan view
  • FIGURE 3 shows the tying wheel on an enlarged scale
  • FIGURE 4 shows the wheel in cross-section.
  • numeral 1 refers to a spinning cake which is to be tied. This spinning cake is placed on supporting surface 2, which is attached to a rotatable disc 4 by means of eight upwardly extending brackets 3.
  • gear wheel 15 serves to drive tying wheel 16.
  • Wheel 16 is constructed in a shape of a 270 arc. To make it possible for tying wheel 16 to be driven continuously, there is provided at an angular distance of about 120 from gear wheel 15 a second gear wheel 17, which is also in contact with tying wheel 16 and which is driven in sync-hronism with gear wheel 15. Further, the tying wheel is supported on its outer periphery by a number of supporting rollers 19 and the inside by a number of supporting rollers 20.
  • the apparatus is also provided with electric contact 21, which is incorporated in the supply circuit for electric motor 14.
  • FIGURES 3 and 4 show the tying wheel on an enlarged scale.
  • a rim composed of teeth 22, which intermesh with gear wheels 15 and 17.
  • the tying wheel is constructed substantially U- shaped, thus permitting positioning within the outer and inner rim various elements according to this invention.
  • numeral 23 in FIGURE 3 shows a holder for a yarn supply spool 24 from which tying yarn 26 may be unwound and passed via various guiding members over thread guide 25 to spinning cake 1 (as shown in FIGURE 1 only. Between spool 24 and thread guide 25, tying yarn 26 is pased over various thread guides and tensioning members.
  • the yarn loop passing around guiding member 28 may temporarily have a greater length without the tension of the tying yarn leaving the thread guide 25 being subject to appreciable fluctuations.
  • FIGURE 1 intentionally shows that while the tying wheel is rotating, tying yarn 26 is wound on spinning cake 1. After each revolution of tying wheel 16, rotatable disc 4 has advanced of a complete turn. Each bracket 3 passes through the plane of the tying wheel when the interruption or space between the ends of the tying wheel is in correct position in relation to the bracket.
  • FIGURE 2 shows supporting surface 2 formed by eight fiat top ends 31 attached to brackets 3.
  • the tying yarn may be pulled through the openings formed therebetween.
  • the outer left fiat top end consists of two parts 32 and 33 between which the free end of tying yarn 26 may be passed.
  • a recess 34 in part 32 and a corresponding projection 35 in part 33 retain the free end when part 33 is kept pressed against part 32 by means of a pressure spring 36 provided in the inside of part 33.
  • the tying is carried out as follows. First, the free end of the tying thread 26 is pulled past the thread guide 25 in order that it may be clamped between projections 35 and recess 34. An untied freshly cast spinning cake is placed on its supporting surface 2. When driving motor 14 is switched on, tying wheel 16 will start its cycle and is automatically stopped the moment the rotatable disc 4 has made two revolutions. Contact 21 is provided in the supply circuit of the electric motor 14 in a manner known to one skilled in the art. After the contact 21 has contacted the tying wheel 16 times, the current supply circuit of the motor 14 is interrupted and the motor stops in the desired position. Finally, the end of the tying yarn is cut, the cake removed, and the end of the tying yarn suspending from the tying wheel is fastened in the clamp formed by the parts 32 and 33.
  • the above-described tying apparatus is particularly suitable for use in a fully automatic aftertreatment of spinning cakes, and can be used in any system at any stage after the cakes have been dolfed from the spinning pots. Winding the tying yarn 0n the cake by two revolutions of the rotatabled disc results in a sufliciently coherent cake with out the necessity of any further treatment.
  • brackets (a) a plurality of upwardly extending brackets, the topmost portion of each bracket being constructed to provide a fixed supporting and positioning surface segment for the toroidal object to be Wound,
  • brackets further being rigidly mounted about the circumference of a flat, annular disc constructed for rotary movement
  • said means for winding a tying strand constructed for synchronous rotary movement with said disc, across and through said object positioned on said interrupted, annular supporting and positioning surface.
  • said means for winding a tying strand is a split, ring-like member having a tying strand supply, strand guide, and length compensating means, all mounted in an inner rim of said member.

Landscapes

  • Unwinding Of Filamentary Materials (AREA)
US540951A 1965-04-30 1966-04-07 Tying apparatus for toroidal objects Expired - Lifetime US3446446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6505578A NL6505578A (enrdf_load_stackoverflow) 1965-04-30 1965-04-30

Publications (1)

Publication Number Publication Date
US3446446A true US3446446A (en) 1969-05-27

Family

ID=19793068

Family Applications (1)

Application Number Title Priority Date Filing Date
US540951A Expired - Lifetime US3446446A (en) 1965-04-30 1966-04-07 Tying apparatus for toroidal objects

Country Status (2)

Country Link
US (1) US3446446A (enrdf_load_stackoverflow)
NL (1) NL6505578A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902674A (en) * 1973-11-09 1975-09-02 Gen Instrument Corp Core supporting and rotating assembly
US3966131A (en) * 1972-08-23 1976-06-29 Advance Manufacturing Corporation Method and machine for making twisted wire beads for tires
US4301720A (en) * 1979-02-22 1981-11-24 Arbed Societe Anonyme Machine for tying coils of metal wire
US5573627A (en) * 1995-02-15 1996-11-12 Northrop Grumman Corporation Portable taping machine
US6688076B1 (en) * 2002-05-30 2004-02-10 Victor M. Rivera, Jr. Apparatus for wrapping articles in film material
KR100936482B1 (ko) 2009-03-26 2010-01-13 박종원 줄감개

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1603801A (en) * 1923-12-27 1926-10-19 Western Electric Co Coil-winding machine
US1879988A (en) * 1930-07-19 1932-09-27 American Hammered Piston Ring Rod packing
US1953725A (en) * 1932-01-08 1934-04-03 American Glanzstoff Corp Device for the tying of artificial silk cakes
US2973154A (en) * 1957-03-26 1961-02-28 Burroughs Corp Machine for winding strand material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1603801A (en) * 1923-12-27 1926-10-19 Western Electric Co Coil-winding machine
US1879988A (en) * 1930-07-19 1932-09-27 American Hammered Piston Ring Rod packing
US1953725A (en) * 1932-01-08 1934-04-03 American Glanzstoff Corp Device for the tying of artificial silk cakes
US2973154A (en) * 1957-03-26 1961-02-28 Burroughs Corp Machine for winding strand material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966131A (en) * 1972-08-23 1976-06-29 Advance Manufacturing Corporation Method and machine for making twisted wire beads for tires
US3902674A (en) * 1973-11-09 1975-09-02 Gen Instrument Corp Core supporting and rotating assembly
US4301720A (en) * 1979-02-22 1981-11-24 Arbed Societe Anonyme Machine for tying coils of metal wire
US5573627A (en) * 1995-02-15 1996-11-12 Northrop Grumman Corporation Portable taping machine
US6688076B1 (en) * 2002-05-30 2004-02-10 Victor M. Rivera, Jr. Apparatus for wrapping articles in film material
KR100936482B1 (ko) 2009-03-26 2010-01-13 박종원 줄감개

Also Published As

Publication number Publication date
NL6505578A (enrdf_load_stackoverflow) 1966-02-25

Similar Documents

Publication Publication Date Title
US3446446A (en) Tying apparatus for toroidal objects
US2092811A (en) Treatment of yarns
JPS6211098B2 (enrdf_load_stackoverflow)
US2647697A (en) Tandem chuck wind-up
CN113195808B (zh) 用于改造纺纱机的方法及由上述方法得到的改进的纺纱机
US2936508A (en) Yarn packaging apparatus
US4391087A (en) Twisting apparatus
US2244492A (en) Process and apparatus for yarn winding
US2946526A (en) Continuous method for winding up yarns
US4125229A (en) Apparatus for restarting a broken thread or yarn strand during a winding process
US3247568A (en) Process and apparatus for warping and sizing of short warp threads
US3172616A (en) Filament unwinding apparatus
ES442724A1 (es) Perfeccionamientos en las bobinadoras de puas independien- tes.
CA1135673A (en) Method and apparatus for automatically winding a thread onto a winding unit
US4552320A (en) Method and apparatus for forming snarl-free thread reserves
US3022623A (en) Thread twisting apparatus
SU1666587A1 (ru) Центрифугальна пр дильна машина
US2694848A (en) Beaming apparatus
SU1670010A1 (ru) Устройство дл изготовлени нетканой ленты
US2791384A (en) Winding terminating apparatus for winding machines
US4185790A (en) Reeling machine for forming a hank
US2617603A (en) Threading-in on a reel
US2462043A (en) Tension device for rubber covering machines
US3456435A (en) Transfer of threadlines between spindles
US2211954A (en) Apparatus for the production of artificial thread