EP0433217B1 - Kammer zum kontinuierlichen Behandeln von Filamenten - Google Patents

Kammer zum kontinuierlichen Behandeln von Filamenten Download PDF

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Publication number
EP0433217B1
EP0433217B1 EP90810800A EP90810800A EP0433217B1 EP 0433217 B1 EP0433217 B1 EP 0433217B1 EP 90810800 A EP90810800 A EP 90810800A EP 90810800 A EP90810800 A EP 90810800A EP 0433217 B1 EP0433217 B1 EP 0433217B1
Authority
EP
European Patent Office
Prior art keywords
chamber
parts
sealing
sealing surfaces
pressure
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
EP90810800A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0433217A1 (de
Inventor
Felix Graf
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0433217A1 publication Critical patent/EP0433217A1/de
Application granted granted Critical
Publication of EP0433217B1 publication Critical patent/EP0433217B1/de
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
    • 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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/044—Rubber mold

Definitions

  • the invention is in the field of textile technology and relates to a chamber for the continuous treatment of filaments according to the preamble of claim 1.
  • chambers are used through which the thread is continuously drawn and the fluid is usually circulated in countercurrent or cocurrent to the thread, in some cases at high temperatures.
  • the filaments are heated, braked, conveyed, stretched, dyed, coated, textured, swirled, shrunk, relaxed, fixed with ultrasound, etc.
  • Synthetic threads are drawn through a liquid chamber for stretching, for example.
  • the liquid circulating in the chamber in countercurrent or cocurrent to the thread serves on the one hand for hydrodynamic braking, and on the other hand also acts as a heat exchanger due to its large heat capacity.
  • the chamber can be opened in a simple manner.
  • the chambers are often made of two or more parts that can be opened or lifted apart for opening.
  • For closing they are folded up again or positioned on top of one another and pressed together with as few easy-to-use locking devices as screws or clamps.
  • the chamber parts should lie so close to one another that - except for the inlet and outlet opening for the thread - no fluid can escape and that there are no joints in the chamber in which thread parts can get caught and get caught.
  • Such chambers are e.g. in EP-A-0184625 or EP-A 0249804 in the form of thread conveying nozzles or texturing nozzles, these chambers being sealed by pressing a relatively elastic chamber part onto a relatively rigid chamber part as uniformly as possible.
  • a drawing chamber for drawing filaments in a drawing bath is described by the applicant in patent application EP-A 384 886, which chamber can be opened for inserting the filament tapes. It essentially consists of a base part and a cover part, wherein the cover part can be designed in such a way that the bath length, ie the length of the filament passage in the bath liquid, can also be changed. Further information on divisible chambers for stretching filaments in the liquid bath can be found there.
  • sealing between the chamber parts with conventional elastic sealing material leads to Problems.
  • Another reason against the use of sealing material in general is that the sealing material would have to be positioned very precisely, which is only possible with increased effort in the case of a sealing connection which has to be separated very often.
  • the sealant should not protrude in the slightest, nor leave a joint open, since in both cases there is a risk of filaments getting caught.
  • the chamber parts of such chambers can be equipped with metallic sealing surfaces or sealing surfaces made of other hard materials.
  • the processing requirements for such sealing surfaces are very high and it is found that the metal-sealed contact surfaces between the chamber parts can never be completely sealed without special measures. It is therefore desirable that ways and means for further improvements be sought.
  • the sealing principle of the chambers according to the invention is based on this; that the elastic deformation of the hard (non-rubber-elastic) sealing surfaces, which can be metallic or ceramic, for example, which is to be expected due to the closing forces and the medium forces, is calculated and that the sealing surfaces are corrected in such a way that they are planar due to the deformation under operating conditions and guarantee absolute tightness.
  • the shape correction can only be carried out on one of the two involved Sealing surfaces are carried out while the other is designed flat. Both sealing surfaces are then deformed under the operating conditions so that a non-flat, but absolutely tight contact surface is created.
  • Fig. 1 shows a simplified, open chamber with a lower part 1 and an upper part 2 (for differently oriented chambers rather base part 1 and cover part 2).
  • the two chamber parts are lifted from each other, the passage of the thread is indicated by an arrow.
  • the forces acting on the chamber during operation are also shown in the figure.
  • the fluid pressure p F which is caused by the fluid in the chamber, acts on the inner surface A of the chamber cavity. It is composed of a static and a dynamic component and is therefore dependent on the static pressure of the fluid and its speed.
  • a sealing pressure p D should act on the sealing surfaces B of the two parts in order to prevent the separation of the two parts and fluid leaks.
  • the sealing pressure is generally set somewhat higher than the fluid pressure.
  • the closing force F acts on a large area of the chamber parts or if it is divided into a large number of components that act on points that are distributed as regularly as possible, the forces acting on the chamber parts will not deform them.
  • the closing force F only acts in a point on the parts, they are elastically deformed under the load.
  • the elastic deformation means that portions of the sealing surfaces that are closer to the point of application of the closing force F experience a higher one, those that are further away experience a lower or no sealing pressure p D , which inevitably leads to leakages.
  • the point of application of the closing force is shown in the middle of the two chamber parts. This would correspond to a single closing means in the middle of the chamber parts.
  • FIG. 2 shows the expected deformation of the sealing surfaces of the chamber from FIG. 1 under operating conditions, that is to say under load, along a longitudinal section.
  • the figure shows the deformation of the upper chamber part f o and the deformation of the lower chamber part f u , of course completely oversized. In reality, it will always be deformations on the order of a few hundredths of a millimeter. The calculation is based on the assumption that the fluid pressure over the inner chamber surface and the sealing pressure are constant and that the two chamber parts are identical. The same deformation can be expected on both parts of the chamber if they have the same mechanical properties.
  • the sealing surfaces of the chamber parts are corrected in the manner shown schematically in FIG. 3a (f o 'and f u '), the chamber parts are deformed under operating conditions (f o ⁇ and f u ⁇ ) such that the sealing surfaces are plan, as Fig. 3b shows.
  • the shape correction can also be carried out as a sum correction only on one chamber part, which will be the preferred method because of the lower outlay.
  • 4a shows the necessary shape correction f s if only the upper chamber part of the chamber from FIG. 1 is corrected
  • FIG. 4b the corresponding shape of the sealing surfaces in the loaded state. If the two chamber parts, as will be the case in most real cases, are not identical, it is advantageous to correct the more elastic chamber part, since the correction method described below can be carried out on the more elastic part with less effort.
  • the shape correction will in all cases only make up a small fraction of the thickness of the chamber part, so that it can be carried out by grinding the corresponding points without changing the mechanical properties of the chamber part.
  • the prepared chamber part 10 with the sealing surface B facing away from the plate is clamped onto a magnetic or vacuum plate 11, intermediate layers 13 corresponding to the calculated deformation being inserted between the chamber part and the plate.
  • the sealing surface is ground flat using a grinding tool. It is important to ensure that the chamber part is only elastically tensioned becomes. If the chamber part is relaxed and subsequently loaded according to the operating conditions, the sealing surface will be flat.
  • FIG. 6 shows a longitudinal section through the chamber parts of a chamber which is to be pressed together by two closing means.
  • the necessary shape correction which was only carried out on the lower part of the chamber, clearly reflects the two closing force components that the two closing means will exert.
  • FIG. 7 shows further variants of chambers, the parts of which are pressed onto one another with shape-corrected, metallic sealing surfaces.
  • Fig. 7a shows a chamber for the treatment of 4 parallel threads, which consists of a large lower part and 4 smaller upper parts (one per thread). The advantage of this embodiment variant is that the chamber of each individual thread can be opened separately.
  • Fig. 7b shows a chamber consisting of 4 chamber parts, a shape that can facilitate the fabrication of complicated interior designs. Of course, a corresponding chamber can also be composed of three or more than four corresponding chamber parts.
  • FIG. 8a finally shows an embodiment of the chamber according to the invention designed for very high fluid pressures, one chamber part 20 of which is a block with a recess, in the example shown a V-shaped channel, while the other chamber part 21 is a shape corresponding to the recess in the figure Example is wedge-shaped. It is obviously advantageous in this case to correct the shape on the locking wedge 21 so that it effectively has the shape shown in Fig. 8b.
  • Appropriate chambers for the passage of several threads consist of a chamber part with several recesses and several chamber parts that fit into the recesses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP90810800A 1989-12-14 1990-10-19 Kammer zum kontinuierlichen Behandeln von Filamenten Expired - Lifetime EP0433217B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4496/89 1989-12-14
CH4496/89A CH679785A5 (enrdf_load_stackoverflow) 1989-12-14 1989-12-14

Publications (2)

Publication Number Publication Date
EP0433217A1 EP0433217A1 (de) 1991-06-19
EP0433217B1 true EP0433217B1 (de) 1994-07-20

Family

ID=4277191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810800A Expired - Lifetime EP0433217B1 (de) 1989-12-14 1990-10-19 Kammer zum kontinuierlichen Behandeln von Filamenten

Country Status (4)

Country Link
US (1) US5136860A (enrdf_load_stackoverflow)
EP (1) EP0433217B1 (enrdf_load_stackoverflow)
CH (1) CH679785A5 (enrdf_load_stackoverflow)
DE (1) DE59006511D1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2571180B2 (ja) * 1992-12-08 1997-01-16 東洋電機株式会社 仮撚り加工用加熱装置
CN1323202C (zh) * 1999-02-16 2007-06-27 天科纺织机械部件有限公司 纱线放入并启动假捻变形装置的方法及一种假捻变形装置
GB0000786D0 (en) * 2000-01-14 2000-03-08 Univ Manchester Apparatus for processing textile materials
CN113479714B (zh) * 2021-07-26 2022-07-26 安徽工程大学 一种纺织用纱线导向装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316245A (en) * 1941-06-25 1943-04-13 Du Pont Yarn preparation
FR1060296A (fr) * 1951-08-01 1954-03-31 Rommler G M B H H Presse hydraulique pour la fabrication de corps en forme de plaques
US2688067A (en) * 1952-10-17 1954-08-31 American Cyanamid Co Apparatus adapted for the heat treatment of moving filamentary material
GB987722A (en) * 1963-03-20 1965-03-31 Ilford Ltd Air squeegee
US3592585A (en) * 1969-10-22 1971-07-13 Robert R Candor Method and apparatus for treating sheet-like material and the like
CS203613B1 (en) * 1978-12-21 1981-03-31 Lubos Hes Apparatus for heat treatment of synthetic fibres
CH656653A5 (de) * 1981-08-06 1986-07-15 Kannegiesser H Gmbh Co Verfahren und vorrichtung zum entwaessern gewaschener waeschestuecke.
JPS59191600A (ja) * 1983-04-15 1984-10-30 Hitachi Ltd ホツトプレス
DE3320783C1 (de) * 1983-06-09 1984-11-08 Wagener Schwelm GmbH & Co, 5830 Schwelm Vorrichtung fuer die Reparatur und zum Endlosmachen von Foerdergurten
DE3577733C5 (de) * 1984-12-03 2010-12-30 Maschinenfabrik Rieter Ag Garnbehandlungsdüse.
GB2176504B (en) * 1985-05-31 1988-10-26 Mitsubishi Heavy Ind Ltd Compression membrane
GB2193232A (en) * 1986-06-17 1988-02-03 Rieter Ag Maschf Thread treating nozzles
DE3627513C2 (de) * 1986-08-13 1996-09-19 Barmag Barmer Maschf Düse zum Texturieren eines laufenden Fadens
US4864701A (en) * 1988-12-27 1989-09-12 Milliken Research Corporation Method of forming spun-like synthetic yarn
EP0384886B1 (de) * 1989-02-24 1993-07-28 Maschinenfabrik Rieter Ag Streckkammer

Also Published As

Publication number Publication date
EP0433217A1 (de) 1991-06-19
DE59006511D1 (de) 1994-08-25
CH679785A5 (enrdf_load_stackoverflow) 1992-04-15
US5136860A (en) 1992-08-11

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