EP0761855A1 - Procédé et dispositif pour le frisage à boîte de bourrage - Google Patents

Procédé et dispositif pour le frisage à boîte de bourrage Download PDF

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Publication number
EP0761855A1
EP0761855A1 EP96810483A EP96810483A EP0761855A1 EP 0761855 A1 EP0761855 A1 EP 0761855A1 EP 96810483 A EP96810483 A EP 96810483A EP 96810483 A EP96810483 A EP 96810483A EP 0761855 A1 EP0761855 A1 EP 0761855A1
Authority
EP
European Patent Office
Prior art keywords
thread
nozzle
nozzles
filament threads
threads
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.)
Ceased
Application number
EP96810483A
Other languages
German (de)
English (en)
Inventor
Peter Busenhart
Jörg Maier
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
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to EP99113045A priority Critical patent/EP0957189A2/fr
Publication of EP0761855A1 publication Critical patent/EP0761855A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • 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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet
    • 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
    • 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
    • D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
    • 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
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

Definitions

  • the invention relates to a method for upsetting synthetic filament threads according to the preamble of the first method claim and to a device according to the preamble of the first device claim.
  • the preliminary stage for crimping involves sucking in the filament threads with a sufficiently high tension in the filament threads in front of the thread suction nozzle in order to avoid winding problems occurring on the preceding godets.
  • the removal speed of the filament threads has risen sharply due to improved and faster texturing processes, which has increased the demands on the suction nozzle in front of the stuffer box.
  • yarn speeds at the entrance of the texturing nozzle that is to say at the entrance of the suction nozzle of 4,000 m / min, are known, which places very high demands on a pneumatic take-off device.
  • a nozzle for texturing a thread is known from European Patent No. 0 189 099B1, in which the flow channel, in which the filament threads are guided together with the outflowing pressure medium, is designed with a cylindrical, in particular circular-cylindrical, cross section and a constant diameter over its length. which also applies to the propellant channels.
  • the device could be used for thread speeds of up to 3,000 m / min.
  • the aforementioned nozzle produces insufficient thread tension at a speed higher than 3000 m / min, which includes the risk of the aforementioned winding of the stretch godets and leads to uncertainties in the production process.
  • EP 0 539 808 itself had the task of eliminating the aforementioned disadvantage and proposed an apparatus for upsetting synthetic filament threads in which the filament threads were fed through a thread inlet duct and the pressure medium through at least one blowing duct, preferably an annular slot formed on the lateral surface of a straight circular cone was, the filament threads were conveyed together with the pressure medium through a narrowest part of a narrowing flow channel, in which speed of sound and then in an expanding part of the flow channel supersonic speed was generated.
  • the blowing nozzle is designed as a type of Laval nozzle, but with a thread guide tube concentrically inserted into the Laval nozzle, the outer wall of which guides the air flow together with the inner wall of the Laval nozzle.
  • the pressure is high enough, for example between 5 and 40 bar, preferably between 6 and 35 bar, the speed of sound is reached at the narrowest point of the Laval nozzle and the speed of sound in the widening part of the nozzle.
  • the circular mouth edge of the outlet mouth of the thread guide tube guided concentrically within the Laval nozzle lies essentially in an imaginary plane which is essentially parallel to an imaginary plane in which the mouth edge of the outlet mouth of the Laval nozzle lies.
  • the nozzle designed in this way is capable of delivering threads to the subsequent stuffer box at a speed of up to 6,000 m / min.
  • the high pressure and the inevitable large amounts of air associated with this system are disadvantages of this system.
  • the advantage of the invention in relation to the variant of the first independent method claim is that the thread at the outlet of the Laval nozzle is caught by a propellant which has supersonic speed, while the advantage in relation to the variant of the second independent method claim is that the tensile force on the filament thread is increased by the additional nozzles, as seen in the thread running direction.
  • a preferred embodiment consists in that the longitudinal axis of the nozzles forms an acute angle with the longitudinal axis of the thread inlet channel, so that the propellant can grip the thread with an injector effect.
  • FIG. 1 shows a suction part 1 for a ruffling nozzle as used for example from publication EP 039 763.
  • FIGS. 1 to 9 are parts of such a aforementioned half of an entire upsetting nozzle. It follows from this that FIG. 1 further shows a nozzle body half 2, in which a thread inlet channel 3 is provided, which opens into a flow channel 4.
  • a thread detection space 6 is provided, into which a Laval nozzle 5 opens on both sides, that is, on the left and right with a view of the figure.
  • the longitudinal axis 9 of the left-hand Laval nozzle forms an angle ⁇ with the longitudinal axis 19 of the thread inlet duct 3 or the flow duct 4 and the longitudinal axis 9 of the right-hand Laval nozzle 5 with the aforementioned longitudinal axis 19 forms an angle ⁇ .
  • angles ⁇ and ⁇ can be the same or predetermined unequal, which e.g. can be determined empirically.
  • the Laval nozzles 5 are arranged symmetrically, and their longitudinal axes 9 intersect in the longitudinal axis 19.
  • the angles ⁇ and ⁇ are of equal size.
  • the Laval nozzles 5 are connected to an air supply duct 7 which is provided in the shape of a half ring in the half of the suction part 1 shown in FIG. 1, that is to say that both Laval nozzles 5 are connected to the same air supply duct.
  • the air supply duct 7 is provided with an air supply pipe 8 in order to bring propellant into the air supply duct 7 from the outside.
  • FIG. 2 shows a so-called “double-decker” suction part, insofar as the combination of the Laval nozzles 5 together with the air supply duct 7 and air supply pipe 8 and thread detection space 6 are provided twice and one after the other, as seen in the figure, one above the other or in other words, as seen in the direction of the thread.
  • the combination mentioned can also be provided more than twice, as seen in the thread running direction.
  • the flow channel 4.1 has a predetermined larger cross section that takes the additional air quantity into account than the previous flow channel 4.
  • the cross sections of the flow channels 4 and 4.1 are determined by tests in order to avoid that counterflow in the thread inlet channel arises as a result of a congestion in the flow channel.
  • FIG. 3 with the suction part 1.b shows a variant of FIG. 1 in that the Laval nozzles are arranged several times, as shown in FIG. 6, in an arrangement around the thread inlet channel 3.
  • the number of Laval nozzles and their distribution around the thread inlet channel can be selected, that is, such an arrangement is determined on the basis of tests.
  • the suction part 1.b further comprises a nozzle support part 12 in which the Laval nozzles 5 are arranged as shown in FIG.
  • Adjacent to the nozzle body 12 is an annular wall 11 above and an annular part 13 below.
  • the ring wall forms, together with the nozzle support part 12 and with a cover 10, the air supply channel 7.2, the propellant (usually hot air or steam) being brought into the air supply channel 7.2 by means of the air supply pipe 8 which is embedded in the ring wall 11.
  • the ring part 13 forms the thread detection space 6 and the flow channel 4 is provided in a base part 14 which adjoins the ring part 13.
  • the parts 10, 11, 12, 13 and 14 are each halves, which together form the nozzle body half 2.2.
  • the means for holding the parts 10, 11, 12, 13 and 14 layered on top of one another are not shown here, which can be, for example, clips, screws or other mechanical means or also adhesives.
  • the Laval nozzles are arranged at angles ⁇ and ⁇ with respect to the longitudinal axis 19.
  • the further elements which correspond functionally to the elements in FIG. 1, either have the same characteristics or an identification mark provided with an index.
  • Figure 4 with the suction part 1.c shows in principle in the same way a variant of Figure 3, as is the case for Figure 2 as a variant of Figure 1.
  • the elements of the lower Laval nozzle arrangement as seen in the figure, have the same reference numerals as the elements of the upper one Laval nozzle arrangement, but also with an index ,,. 1 ''.
  • the functionally corresponding elements of FIG. 1 have either the same identifier or an identifier ". 3" provided.
  • the flow channel 4.1 has a predetermined larger cross section that takes the additional air quantity into account than the flow channel 4.
  • FIG. 5 with the suction part 1.d shows a variant compared to FIG. 3, in that the Laval nozzles of FIG. 3 are arranged in an infinite number in a circle, in that an annular nozzle is formed, as it is in combination with FIG. 5 and 7 is shown.
  • the annular nozzle is formed on the one hand by an outer conical surface 17 provided on an insert part 16 and on the other hand by an inner conical surface 18 provided on the base part 14.1, which is shown in section according to FIG. 5 with a section through two Laval nozzles analogous to Laval nozzles 5 in FIG.
  • suction part 1.d is composed of the base part 14.1, the ring wall 11.2 adjoining it and the cover part 15, which contains the insert part 16.
  • the thread inlet channel 3 is provided in the insert part 16 and the flow channel 4 is provided in the base part 14.1.
  • the base part 14.1 forms, together with the ring wall 11.2, the cover part 15 and the insert part 16, a semi-ring-shaped one above the aforementioned ring nozzle Air supply duct 7.4, to which the air supply pipe 8 is connected.
  • longitudinal axes 9.1 which represent the longitudinal axes of the Laval nozzles 5 in FIGS. 1 to 4, these longitudinal axes 9.1 are symbolically represented in FIG. 5 in order to represent the Laval nozzle cross section.
  • a manometer 20 is connected to the ring wall 11.2 in order to be able to measure the pressure in the air supply duct 7.4.
  • This variant can be used for all of the aforementioned air supply ducts 7 to 7.3.
  • the “double-tier” or staggered nozzles 5 shown and described with FIGS. 2 and 4 can also be used as nozzles that are not supersonic nozzles but, as shown in FIGS. 8 and 9, cylindrical ones Nozzles 21 (FIG. 8) or constricting nozzles 22 (FIG. 9) can be provided, whereby a conical transition from the air supply duct 7 or 7.1 to the nozzle 21 or 22 can be provided, as is also shown in FIGS. 2 and 4 .
  • the nozzles 21 or 22 can be designed as subsonic or sound nozzles.
  • the nozzles 5, 21 and 22, as mentioned in connection with FIGS. 1 and 2, can be arranged such that the blown-in air is conducted decentrally into the flow channel 4, 4.1 , which gives the thread a twist.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP96810483A 1995-08-23 1996-07-24 Procédé et dispositif pour le frisage à boîte de bourrage Ceased EP0761855A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99113045A EP0957189A2 (fr) 1995-08-23 1996-07-24 Procédé et dispositif pour le frisage à boíte de bourrage de câbles de filaments synthétiques

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH2401/95 1995-08-23
CH240195 1995-08-23
CH1229/96 1996-05-14
CH122996 1996-05-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP99113045A Division EP0957189A2 (fr) 1995-08-23 1996-07-24 Procédé et dispositif pour le frisage à boíte de bourrage de câbles de filaments synthétiques

Publications (1)

Publication Number Publication Date
EP0761855A1 true EP0761855A1 (fr) 1997-03-12

Family

ID=25687061

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99113045A Withdrawn EP0957189A2 (fr) 1995-08-23 1996-07-24 Procédé et dispositif pour le frisage à boíte de bourrage de câbles de filaments synthétiques
EP96810483A Ceased EP0761855A1 (fr) 1995-08-23 1996-07-24 Procédé et dispositif pour le frisage à boîte de bourrage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP99113045A Withdrawn EP0957189A2 (fr) 1995-08-23 1996-07-24 Procédé et dispositif pour le frisage à boíte de bourrage de câbles de filaments synthétiques

Country Status (4)

Country Link
US (1) US5732454A (fr)
EP (2) EP0957189A2 (fr)
JP (1) JPH09111562A (fr)
CN (1) CN1054660C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064982A2 (fr) * 2000-03-01 2001-09-07 Barmag Ag Procede et dispositif de frisage par compression
WO2009071109A1 (fr) * 2007-12-06 2009-06-11 SSM Schärer Schweiter Mettler AG Procédé et dispositif de texturation par air
CN103243423A (zh) * 2013-05-29 2013-08-14 济南大自然化学有限公司 纤维丝束与卷曲机自动对接装置
CN104411871A (zh) * 2012-05-01 2015-03-11 康廷南拓结构塑料有限公司 拆散碳纤维丝束及模塑包含该类纤维的组合物的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20081112A1 (it) * 2007-08-02 2009-02-03 Oerlikon Textile Gmbh & Co Kg Dispositivo per arricciare filoni di fibre sintetiche
EP3753885A1 (fr) * 2019-06-19 2020-12-23 Heberlein AG Appareil d'aspiration pour une machine textile, machine textile dotée d'un dispositif d'aspiration, utilisation de deux éléments de cyclone et procédé d'aspiration de fils

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525134A (en) * 1969-02-17 1970-08-25 Du Pont Yarn fluid treating apparatus
DE1785158A1 (de) * 1968-08-17 1971-03-18 Merck Patent Gmbh Duese zum Abziehen eines Fadens oder mehrerer Faeden
FR2253856A1 (fr) * 1973-12-07 1975-07-04 Ici Ltd
DE2753705A1 (de) * 1977-12-02 1979-06-13 Metallgesellschaft Ag Stauchkraeuselvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341394A (en) * 1966-12-21 1967-09-12 Du Pont Sheets of randomly distributed continuous filaments
US4124924A (en) * 1977-08-31 1978-11-14 Eastman Kodak Company Process for making slub yarn from continuous filament yarn
JPS57501190A (fr) * 1980-08-18 1982-07-08
CN1006910B (zh) * 1985-07-20 1990-02-21 巴马格·巴默机器制造股份公司 用于丝变形的喷嘴
DE3627513C2 (de) * 1986-08-13 1996-09-19 Barmag Barmer Maschf Düse zum Texturieren eines laufenden Fadens
DE59201194D1 (de) * 1991-10-26 1995-02-23 Barmag Barmer Maschf Vorrichtung zum Stauchkräuseln synthetischer Filamentfäden.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1785158A1 (de) * 1968-08-17 1971-03-18 Merck Patent Gmbh Duese zum Abziehen eines Fadens oder mehrerer Faeden
US3525134A (en) * 1969-02-17 1970-08-25 Du Pont Yarn fluid treating apparatus
FR2253856A1 (fr) * 1973-12-07 1975-07-04 Ici Ltd
DE2753705A1 (de) * 1977-12-02 1979-06-13 Metallgesellschaft Ag Stauchkraeuselvorrichtung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064982A2 (fr) * 2000-03-01 2001-09-07 Barmag Ag Procede et dispositif de frisage par compression
WO2001064982A3 (fr) * 2000-03-01 2002-03-14 Barmag Barmer Maschf Procede et dispositif de frisage par compression
US6826813B2 (en) 2000-03-01 2004-12-07 Saurer Gmbh & Co. Kg Method and apparatus for stuffer box crimping an advancing multifilament yarn
WO2009071109A1 (fr) * 2007-12-06 2009-06-11 SSM Schärer Schweiter Mettler AG Procédé et dispositif de texturation par air
CN104411871A (zh) * 2012-05-01 2015-03-11 康廷南拓结构塑料有限公司 拆散碳纤维丝束及模塑包含该类纤维的组合物的方法
CN103243423A (zh) * 2013-05-29 2013-08-14 济南大自然化学有限公司 纤维丝束与卷曲机自动对接装置

Also Published As

Publication number Publication date
EP0957189A2 (fr) 1999-11-17
US5732454A (en) 1998-03-31
JPH09111562A (ja) 1997-04-28
CN1054660C (zh) 2000-07-19
CN1150187A (zh) 1997-05-21

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