US3559255A - Threading device for yarn heaters - Google Patents

Threading device for yarn heaters Download PDF

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Publication number
US3559255A
US3559255A US744464A US3559255DA US3559255A US 3559255 A US3559255 A US 3559255A US 744464 A US744464 A US 744464A US 3559255D A US3559255D A US 3559255DA US 3559255 A US3559255 A US 3559255A
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United States
Prior art keywords
yarn
heater
thread
heating member
guides
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Expired - Lifetime
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US744464A
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English (en)
Inventor
Christopher Hugh John Cockroft
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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Publication date
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    • 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
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/003—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one stationary surface, e.g. a plate

Definitions

  • the invention concerns improvements in or relating to heaters for travelling yarns.
  • Yarn heaters form an important part of apparatus for processing travelling yarns, as, for instance, apparatus for heat-relaxing or twist-setting synthetic lilamentary yarns.
  • the present invention is concerned with the provision of a two-sided contact heater having means for automatically threading-up one or more yarns in contact therewith.
  • a yarn heater assembly comprises a longitudinally and upwardly extending heating member adapted to be mounted on a frame, the outwardly-facing surfaces of which heating member are adapted for contact by a travelling yarn or yarns, means for supplying heat to said heating member, a grooved pulley mounted at the upper end and on the mid-line of said heating member, an endless chain mounted for orbital rotation around said heating member and pulley in a plane parallel to the length dimension thereof, a cantilever arm mounted perpendicularly on said endless chain for rotation therewith, two horizontally-spaced!
  • hook-shaped thread-guides mounted on said arm for one or more yarns to be threaded-up around said heating member, said hook-shaped thread-guides having their open sides uppermost when said arm is in any position on the upward portion of its travel, and fixed threadguide means at the lower end of said heating member for guiding said yarn or yarns into and out of contact, respectively, with the lower end-portion of said heating member.
  • said heating member comprises two heated plates mounted back-to-back; and, preferably, the means for supplying heat to the plates is a single electric resistance heater mounted therebetween.
  • the plates Preferably, also, have a slight convexity of surface, equivalent, say, to a radius of curvature of 140 feet for a 6 foot height heater.
  • endless chain is specified for the means for carrying the threading-up arm in orbital rotation around said heating member, it is to be understood that any endless band may be employed instead, a chain being the most convenient form of this type of transporter.
  • SPECIFIC EMBODIMENT In one particular use for a yarn heater assembly ac ⁇ - cording to the invention, two threadlines are threaded-up in parallel, to run in twin grooves along the outwardlyfacing surfaces of the heating member in opposite directions and around twin grooves in the pulley at the upper end of the heating member. In this use, the threadlines severally are given a false twist in opposite twist directions, which twist is set by heat from the heater assembly.
  • the cantilever arm has two pairs of hookshaped thread guides, one pair for each thread-line.
  • Each pair of such hook-shaped thread-guides co-operates with the fixed thread-guide means to enable bights to be formed in each threadline, which bights are then extended in size by upward movement of the cantilever arm when the endless chain is set in orbital motion.
  • the operation of the automatic threading-up part of the apparatus is similar, in that the running yarn is laced up around the fixed thread guide means adapted to guide it into contact with the heated plate which is to be contacted in the upward movement of the yarn, thence around an inner one or more hook-shaped thread-guides on the arm then positioned level with the bottom of the heated plates and at the starting point for the upward run of its orbital movement, outwardly therefrom to an outer one or more hookshaped thread-guides thereon, and finally, around pref'- erably another xed thread guide means adapted to guide the yarn out of contact from the heated plate which is to be contacted in the downward movement of the yarn.
  • a chain drive mechanism e.g. an electric motor, is started, to rotate the endless chain in orbital movement, and the bight or bights of yarn are slowly drawn out, one side thereof leading across the side of the heater assembly and the other leading parallel to the heated plate which is to be contacted during the upward movement of the yarn or yarns.
  • the lateral spacing of two inner hook-shaped threadguides is equal to that of the grooves in the grooved alley and in the heated plates.
  • Mechanism operates to stop the chain drive, and hence arrest the orbital movement of the cantilever arm, when the latter has arrived near to the bottom of the heater assembly.
  • the two sets of xed thread-guide means should be spaced heightwise from each other, as well as laterally according to the depth of the heater assembly, with the guiding-on thread-guide means lower than the guiding-off means.
  • the two outer of the hook-shaped guides on the cantilever arm should be spaced heightwise from each other, with the lower one displaced laterally inwardly from the other by a small amount.
  • one co-operating pair of inner and outer hook-shaped guides should be spaced depthwise by a small amount from the other such co-operating pair.
  • a guide bar may be fitted to and along the lower portion of the side of the heater assembly, with its end curved outwardly to extend perpendicularly therefrom at the height level of just above the upper fixed thread-guide means, in order to keep the thread-lines clear of any insulating cover down the length of the side of the heater, and in order to help maintain the thread-lines separate at the lacing-up position.
  • the grooves in the grooved pulley are initially inwardly sloping, say at 45 ending finally in rectangular troughs.
  • FIG. 1 is an oblique side elevational view of a yarn heater assembly according to the invention.
  • FIG. 2 is a section through A-A of FIG. 1.
  • heating member 1 comprises a two-faced plate (or two plates mounted back-to-back) adapted to be heated by internal electric resistance means (not shown) and presenting two outwardly facing grooved surfaces for a pair of yarns Y1 and Y2 to run in contact with along grooves 3, 5.
  • Guard means 7 is fitted in front of heating member 1.
  • heating member 1 At the rear of heating member 1 are mounted sprockets 9, 11 around and by which endless chain 13 is adapted to be driven in orbital rotation around heating member 1.
  • Chain guard means 15 is mounted between heating member 1 and said sprockets.
  • a groove pulley 16 is mounted at the upper end of heating member 1.
  • Cantilever arm 17 is mounted for rotation with said endless chain 13 and is shown in solid lines at the initial lacing-up position at the bottom of the heater assembly and in broken lines at a position immediately after passing through the zenith of the orbital rotation.
  • Two pairs of horizontally spaced hook-shaped threadguides 19, 19 and 21, 21' are mounted on cantilever arm 17, the outer ones, 19' and 21' being aflxed to cross-piece 23 at the end of the arm.
  • These outer thread-guides 19' and 21 have a small amount of inward turn-over; while the inner thread-guides, 19 and 21, have none.
  • Guide bar 25 is attached by support 27 to heater guard means 7, and serves to keep the two thread-lines separate at lacing-up and while the cantilever arm is rising to the zenith of its orbital rotation.
  • the guide bar also serves to keep the thread-lines clear of contact with the heater guard means 7 during the threading-up of the assembly.
  • Fixed thread-guide means 29, 29 for the ingoing yarns and fixed thread-guide means 31, 31 for the outcoming yarns are positioned as shown and are aflixed to the frame of the heater assembly (although not so shown in particular detail).
  • the apparatus of the invention is particularly suitable for high speed yarn processing, such as false twist crimping in a combined drawing and false twist crimping process, where speeds of 2000 feet/ minute are possible, and hence very long heater contact is desirable.
  • a heater height of 6 feet is exemplary of the dimensions to be accommodated; and the automatic threading-up provided by the apparatus obviates the necessity for staging on which an operator can stand to reach the top of the assembly, as well as ensuring that the thread-lines are indeed threaded-up accurately in their appropriate grooves.
  • the heater of the invention may be uprightly mounted vertically, or at angles to the vertical in either the place of the depth of the heater (i.e., in the plane of the back-to-back mounting of the heated plates) or in the plane at right angles thereto.
  • Thermostatic control of the heating element or elements will also usually be provided, so as to maintain constant the temperature of the heated plates or any portion thereof according to any desired temperature gradient.
  • a yarn heater assembly consisting of a longitudinally and upwardly extending heating member the outwardly facing surfaces of which are adapted for contact by at least one travelling yarn, and a grooved pulley mounted at the upper end and on the mid-line of said heating member, the improvement comprising an endless chain mounted for orbital rotation around said heating member and pulley in a plane parallel to the length dimension thereof, means for rotating said chain, a cantilever arm mounted perpendicularly on said endless chain for rotation therewith, two inner and outer horizontally spaced hook-shaped thread-guides mounted on said arm for each yarn to be threaded-up around said heating member, said hook-shaped thread-guides having their open sides uppermost when said arm is in any position on the upward portion of its travel, and fixed thread-guide means located at the lower end of said heating member for guiding said yarn into and out of contact, respectively, with the lower end-portion of said heating member.
  • a yarn heater assembly according to claim 1 in which the outer one of the horizontally spaced hookshaped thread-guides has an amount of inward tum-over of the hooked end, and the inner one has no inward turnover of the hooked end.
  • a yarn heater assembly according to claim 1 in which a guide bar is fitted at the lower end-portion of said heating member to keep the yarn clear of said heating member during threading-up.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
US744464A 1967-07-19 1968-07-12 Threading device for yarn heaters Expired - Lifetime US3559255A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33229/67A GB1171199A (en) 1967-07-19 1967-07-19 Improvements in or relating to Heaters for Travelling Yarns

Publications (1)

Publication Number Publication Date
US3559255A true US3559255A (en) 1971-02-02

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ID=10350224

Family Applications (1)

Application Number Title Priority Date Filing Date
US744464A Expired - Lifetime US3559255A (en) 1967-07-19 1968-07-12 Threading device for yarn heaters

Country Status (6)

Country Link
US (1) US3559255A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE718379A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE6750487U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1574520A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1171199A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL6810082A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971201A (en) * 1974-08-16 1976-07-27 Barmag Barmer Maschinenfabrik Aktiengesellschaft False-twist crimping machine
US4008560A (en) * 1975-03-07 1977-02-22 Heberlein Maschinenfabrik Ag Threading device for a false-twist texturing machine without upper structure
US4171201A (en) * 1976-10-28 1979-10-16 Rieter Machine Works, Ltd. Apparatus for threading up and placing a thermoplastic thread on a heating device of a textile machine
US4201036A (en) * 1978-01-03 1980-05-06 Rieter Machine Works Ltd. False twist machine
US4497627A (en) * 1984-02-23 1985-02-05 Eastman Kodak Company Hot shoe apparatus for preheating drafting, and stabilizing in sequence a running yarn strand
US4641504A (en) * 1984-06-12 1987-02-10 Barmag Barmer Maschinenfabrik Ag Yarn heating chamber
US5088264A (en) * 1989-07-13 1992-02-18 Barmag Ag Yarn threading apparatus
US20030167748A1 (en) * 2000-11-09 2003-09-11 Barmag Ag Texturing machine and method of threading an advancing yarn
US20040182066A1 (en) * 2001-10-10 2004-09-23 Saurer Gmbh & Co. Kg Yarn Texturing machine for producing a composite yarn
WO2005007951A1 (en) * 2003-07-19 2005-01-27 Rieter Textile Machinery France Heating arrangements
DE102009030880A1 (de) 2009-06-29 2010-12-30 Oerlikon Textile Gmbh & Co. Kg Fadenbehandlungsvorrichtung

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971201A (en) * 1974-08-16 1976-07-27 Barmag Barmer Maschinenfabrik Aktiengesellschaft False-twist crimping machine
US4008560A (en) * 1975-03-07 1977-02-22 Heberlein Maschinenfabrik Ag Threading device for a false-twist texturing machine without upper structure
US4171201A (en) * 1976-10-28 1979-10-16 Rieter Machine Works, Ltd. Apparatus for threading up and placing a thermoplastic thread on a heating device of a textile machine
US4201036A (en) * 1978-01-03 1980-05-06 Rieter Machine Works Ltd. False twist machine
US4291529A (en) * 1978-03-01 1981-09-29 Rieter Machine Works, Ltd. False twist machine
US4365468A (en) * 1978-03-01 1982-12-28 Rieter Machine Works, Ltd. False twist machine
US4497627A (en) * 1984-02-23 1985-02-05 Eastman Kodak Company Hot shoe apparatus for preheating drafting, and stabilizing in sequence a running yarn strand
US4641504A (en) * 1984-06-12 1987-02-10 Barmag Barmer Maschinenfabrik Ag Yarn heating chamber
US5088264A (en) * 1989-07-13 1992-02-18 Barmag Ag Yarn threading apparatus
US20030167748A1 (en) * 2000-11-09 2003-09-11 Barmag Ag Texturing machine and method of threading an advancing yarn
US6857259B2 (en) * 2000-11-09 2005-02-22 Saurer Gmbh & Co. Kg Texturing machine and method of threading an advancing yarn
US20040182066A1 (en) * 2001-10-10 2004-09-23 Saurer Gmbh & Co. Kg Yarn Texturing machine for producing a composite yarn
US6840032B2 (en) * 2001-10-10 2005-01-11 Saurer Gmbh & Co. Kg Yarn texturing machine for producing a composite yarn
WO2005007951A1 (en) * 2003-07-19 2005-01-27 Rieter Textile Machinery France Heating arrangements
DE102009030880A1 (de) 2009-06-29 2010-12-30 Oerlikon Textile Gmbh & Co. Kg Fadenbehandlungsvorrichtung

Also Published As

Publication number Publication date
DE1760916B2 (de) 1976-10-14
BE718379A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-01-20
DE1760916A1 (de) 1972-01-05
DE6750487U (de) 1969-01-09
NL6810082A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-01-21
FR1574520A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-07-11
GB1171199A (en) 1969-11-19

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