EP0193891A2 - Dispositif de chauffage pour machine à friser - Google Patents

Dispositif de chauffage pour machine à friser Download PDF

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Publication number
EP0193891A2
EP0193891A2 EP86102618A EP86102618A EP0193891A2 EP 0193891 A2 EP0193891 A2 EP 0193891A2 EP 86102618 A EP86102618 A EP 86102618A EP 86102618 A EP86102618 A EP 86102618A EP 0193891 A2 EP0193891 A2 EP 0193891A2
Authority
EP
European Patent Office
Prior art keywords
thread
heating device
air
fresh air
thread guide
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.)
Withdrawn
Application number
EP86102618A
Other languages
German (de)
English (en)
Other versions
EP0193891A3 (fr
Inventor
Karl Dr.-Ing. Bauer
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0193891A2 publication Critical patent/EP0193891A2/fr
Publication of EP0193891A3 publication Critical patent/EP0193891A3/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to a heating device for a crimping machine, in particular false crimping machine or air jet texturing machine, for continuous hot air treatment in the textured thermoplastic threads according to the preamble of claim 1.
  • thermoplastic threads in crimping machines are known, in which the threads are passed through tubular closed heating zones. This is the case with crimping machines with only a single heater for heat-fixing the threads in the production of HE games (high elasticity), in which the heater is arranged in front of the false twister or the like, but it is preferred with crimping machines with a heating device in front of and behind the false twister, these machines being used for the production of set games, the elongation of which is substantially reduced by heat stabilization and shrinking treatment in the presence of a thread tension.
  • HE games high elasticity
  • the heaters are usually electric, e.g. by resistance heating or by hot air or suitable liquid or vapor heating media, heated from the outside.
  • DE-PS 23 48 371 may be mentioned here, in which, in addition to curved contact heating rails, convection heating devices for crimping machines are also described, which are heated by a condensing organic heat transfer medium.
  • the object of the invention is to make the heat treatment more effective than before and to reduce the heat requirement for the same production quantity with the aim of achieving better heat transfer from the air to the threads.
  • fresh air is blown into the thread channel. This is done in that one or more air inlet openings are arranged on top of or directly above the thread channel.
  • the fresh air has the advantage over blown hot air that it is available everywhere, has a more uniform temperature from place to place and that pressure fluctuations that occur can be compensated for by an adjustable compressed air source. It has now been found that the anticipated cooling of the thread by the fresh air blown in is outweighed by a considerably improved heat transfer.
  • the fresh air stream is preferably supplied through an injector nozzle located on the thread channel before the start of the heating zone.
  • the fresh air flow first arrives via an air supply duct in a ring duct, which leads around the thread duct in a plane that is perpendicular to the axis of the thread duct. From this ring duct, one or more overflow ducts lying on a cone jacket emerge, which open diagonally into the thread duct. They open onto a shoulder with which the narrow entrance area of the thread channel merges into the further area of the thread channel, which is heated.
  • the injector nozzle can consist of two parts with an adjustable, conical upper nozzle part and a fixed nozzle block sitting on the thread channel.
  • the thread conveys a large amount of ambient air into the thread channel, since this ambient air surrounds the thread as an insulating sleeve.For this reason, the input part of the thread channel or the injector nozzle is narrowed, so that the ambient air entrained by the thread on Entrance of the thread channel is stripped.
  • the metering of the supplied fresh air flow can be done on the one hand by means of a solenoid valve on the central fresh air supply pipe and on the other hand by means of a metering device on each injector, e.g. by adjusting the adjustable, conical upper nozzle part.
  • the heated thread channel is advantageously equipped with knobs, beads, rings or the like over the entire circumference and the entire length. This further promotes heat transfer to the thread.
  • the fixing effect of the heating device could be significantly improved, and a high quality and uniformity of the crimp threads with high production output was achieved
  • Fig. 1 shows a longitudinal section of the heating device - (partially) with the injector nozzle.
  • the heating device for a crimping machine has a plurality of thread guide tubes.
  • an injector nozzle can be placed on each of these thread guide tubes.
  • the structure is described schematically on an injector nozzle with a subsequently heated thread guide tube.
  • the injector nozzle consists of a fixed nozzle block 1, which is seated on the heated part of the thread channel, and of the adjustable, conical upper nozzle part 2.
  • the nozzle opens into a thread channel 3 through which the thread (not shown) runs in the direction of rotation 4.
  • the thread channel 1 widens on the shoulder 5, with which the narrow part of the thread channel merges into the enlarged heated area 6.
  • an overflow channel which surrounds the thread channel in a conical shape, meets the thread channel.
  • An upstream of the overflow channel 7 is an annular channel 8, which leads in a plane perpendicular to the thread channel axis around the thread channel area.
  • the ring channel 8 merges into the overflow channel 7 on the lower side 9 facing the thread channel.
  • the fresh air supply can be adjusted by the adjustable, upper nozzle part 2 of the injector nozzle, in that the upper nozzle part is designed as a conical screw, which in its cylindrical region 10 is tightened with a screw winch 11 is equipped on the upper adjustable nozzle part there is a flat rotary knob 12 with a setting pointer 13 on the underside, whereby the screwing depth of the adjustable nozzle part into the nozzle block can be determined and thus the width of the overflow channel 7 can be adjusted.
  • the injector nozzle is connected to a compressed air source (not shown) via pipe 14.
  • the fresh air is conveyed into the ring channel 8 at a constant temperature, preferably room temperature, via a fresh air duct 15. From the injector nozzle 1, 2, the fresh air flows with the ambient air carried by the thread into the expanded heated part of the thread channel 6, which is equipped with knobs 16 over the circumference and the entire length of the heated thread channel.
  • the heating device consists of a heating box 17, in which - in addition to several similar ones - the tube 20 is tightly welded at the upper and lower ends.
  • the tubes are arranged essentially vertically.
  • a thread guide tube 18 is inserted into each tube 20, through which the thread passes during its heat treatment. This removes the heat from the heat transfer medium in the heating box, e.g. Saturated steam, transmitted via the tube gap 19 to the thread guide tube 18, care being taken to ensure good heat transfer from the tube gap 19 to the thread guide tube 18. The heat is transferred to the thread from the thread guide tube.
  • the heat transfer medium in the heating box e.g. Saturated steam
  • the diagram according to FIG. 2 shows, as a test result on the ordinate, the crimping of a wrongly textured and then heat-fixed thread.
  • the heat was fixed in a test with and in a test without fresh air injection without changing other test parameters.
  • the diagram shows the curl (DIN 53840) on the ordinate and the fresh air consumption of the nozzle on the abscissa. It becomes clear that with increased fresh air injection a significantly better crimping behavior of the threads is achieved than without air supply. The improvement occurs in the test facility from around 0.5 standard cubic meters per hour of fresh air injection. It has thus been proven that the heat transfer to the thread in the thread guide tube is considerably improved by blowing in fresh air, as a result of which a substantially better fixing effect of the threads is achieved. By optimizing the thread channel and the injector nozzle, the effective fresh air throughput can be further reduced.
  • the invention unexpectedly improves the heating of a thread by blowing in air which is at a much lower temperature than the thread temperature to be generated.
  • the blown air has a temperature of e.g. only 20 ° C.
  • the improvement is likely to be achieved by the blown air destroying the air flow carried by the thread and which surrounds the thread like an insulation jacket.
  • the air can be directed as a sharp jet vertically or obliquely onto the thread.
  • the air can also be blown into the entrance area of the heating tube by means of an injector.
  • the injector is designed so that the air flow (s) expand when they enter the heating tube and thus lead to turbulence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP86102618A 1985-03-05 1986-02-28 Dispositif de chauffage pour machine à friser Withdrawn EP0193891A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3507642 1985-03-05
DE3507642 1985-03-05
DE3514874 1985-04-25
DE3514874 1985-04-25

Publications (2)

Publication Number Publication Date
EP0193891A2 true EP0193891A2 (fr) 1986-09-10
EP0193891A3 EP0193891A3 (fr) 1989-10-11

Family

ID=25829968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102618A Withdrawn EP0193891A3 (fr) 1985-03-05 1986-02-28 Dispositif de chauffage pour machine à friser

Country Status (3)

Country Link
US (1) US4680872A (fr)
EP (1) EP0193891A3 (fr)
CN (1) CN86101273B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5538792A (en) * 1992-07-10 1996-07-23 Hoechst Aktiengesellschaft Process for drawing heated yarns, thereby obtainable polyester fibers, and use thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69200684T2 (de) * 1991-07-18 1995-03-16 Icbt Roanne Vorrichtung zur thermischen Behandlung von laufenden Garnen.
DE59308918D1 (de) * 1992-07-10 1998-10-01 Hoechst Ag Verfahren zur Wärmebehandlung von sich bewegenden Garnen und Vorrichtung zur Durchführung dieser Behandlung
JP4944957B2 (ja) * 2006-08-10 2012-06-06 エーリコン テクスティル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト テクスチャード加工機
TWI602965B (zh) * 2015-01-22 2017-10-21 財團法人紡織產業綜合研究所 紡織設備以及使用其製作熔噴纖維的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708843A (en) * 1950-08-10 1955-05-24 Chemstrand Corp Fluid treating apparatus for strands
US3298430A (en) * 1962-10-19 1967-01-17 Kodaira Nobuhisa Apparatus of heat treatment for synthetic yarns
GB1212133A (en) * 1967-11-18 1970-11-11 Plutte Koecke & Co Method and apparatus for treating textile filaments or spun yarns
DE1801976A1 (de) * 1968-10-09 1970-05-27 Glanzstoff Ag Verfahren und Vorrichtung zum kontinuierlichen,spannungsfreien Fixieren und Schrumpfen von Kabeln aus ungekraeuselten Faeden
US3633256A (en) * 1969-08-15 1972-01-11 Monsanto Co Orientation drawing chamber for fibers
BR7407198D0 (pt) * 1973-09-26 1975-07-29 Barmag Barmer Maschf Aparelhagem para o tratamento termico de fios
US3883718A (en) * 1974-01-31 1975-05-13 Celanese Corp Apparatus for thermally processing of continuous lengths of fibrous materials
US4135511A (en) * 1976-06-04 1979-01-23 Phillips Petroleum Company Method for start up of a yarn crimping process
DE2851967A1 (de) * 1978-01-25 1979-07-26 Heberlein & Co Ag Vorrichtung zum abkuehlen erhitzter textilgarne aus thermoplastischem material
CH623861A5 (fr) * 1978-01-26 1981-06-30 Heberlein & Co Ag
DE3306459A1 (de) * 1982-03-02 1983-09-15 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Heizeinrichtung fuer eine kraeuselmaschine
US4549361A (en) * 1982-12-10 1985-10-29 Rieter-Scragg Limited Yarn heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5538792A (en) * 1992-07-10 1996-07-23 Hoechst Aktiengesellschaft Process for drawing heated yarns, thereby obtainable polyester fibers, and use thereof

Also Published As

Publication number Publication date
CN86101273B (zh) 1987-12-09
CN86101273A (zh) 1986-09-10
US4680872A (en) 1987-07-21
EP0193891A3 (fr) 1989-10-11

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