WO2020165044A1 - Filière pour machine à filer à jet d'air et procédé pour ouvrir une telle filière - Google Patents

Filière pour machine à filer à jet d'air et procédé pour ouvrir une telle filière Download PDF

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Publication number
WO2020165044A1
WO2020165044A1 PCT/EP2020/053146 EP2020053146W WO2020165044A1 WO 2020165044 A1 WO2020165044 A1 WO 2020165044A1 EP 2020053146 W EP2020053146 W EP 2020053146W WO 2020165044 A1 WO2020165044 A1 WO 2020165044A1
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WO
WIPO (PCT)
Prior art keywords
spinneret
sections
yarn
spinning
section
Prior art date
Application number
PCT/EP2020/053146
Other languages
German (de)
English (en)
Inventor
Alexander Fuchs
Simon-Moritz Funke
Gernot Schaeffler
Gerd Stahlecker
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 CN202080013598.1A priority Critical patent/CN113439134A/zh
Publication of WO2020165044A1 publication Critical patent/WO2020165044A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means

Definitions

  • the present invention relates to a spinneret for an air-jet spinning machine, the spinneret being designed to produce a yarn from a fiber structure fed to the spinneret in a spinning operation, the spinneret comprising a housing with an inlet opening through which the fiber structure enters the spinning nozzle in the spinning operation is insertable, wherein the spinning nozzle comprises an internal vortex chamber, the spinneret having a yarn-forming element protruding into the vortex chamber, which has an inlet for the yarn formed from the fiber structure in the vortex chamber, a discharge duct which is connected to the inlet and one of the end of the draw-off channel comprises the outlet via which the yarn can be drawn off from the spinneret during the spinning operation.
  • the invention also relates to a yarn forming element for a spinneret ei ner air-jet spinning machine, the yarn forming element comprising an inlet for a yarn, a take-off channel adjoining the inlet and an outlet which forms the end of the take-off channel and via which the yarn can be pulled out of the yarn forming element.
  • a method for opening a spinneret of an air-jet spinning machine with a take-off channel for a yarn produced with the aid of the spinneret from a fiber structure and a method for piecing a spinning nozzle of an air-jet spinning machine are the subject of the present invention.
  • Generic spinnerets are used to produce a yarn from an elongated fiber structure with the aid of a vortex air flow generated by corresponding air nozzles in within the vortex chamber of the spinneret.
  • the outer fibers of the fiber structure are wound around the inner fibers (core fibers) in the area of the inlet of the usually spindle-shaped yarn formation element, so that the result is a yarn that is finally drawn off the swirl chamber via the take-off channel of the yarn formation element and with the help of a Spooling device can be wound onto a tube.
  • the object of the present invention is to propose a spinneret of an air-jet spinning machine, a yarn formation element for a spinneret, a spinning station with a corresponding spinneret and a method for opening or spinning a spinneret that are useful both in terms of cleaning the interior of the spinneret or the take-off channel as well as with regard to the piecing process described, in which the yarn was previously guided through the spinneret against the transport direction, differ positively from the prior art.
  • the object is achieved by a spinneret of an air-jet spinning machine, a yarn formation element for a spinneret, a spinning station with a corre sponding spinneret and a method for opening or piecing a spinneret with the features of the independent claims.
  • the spinning nozzle according to the invention has a housing with an inlet opening via which a fiber structure can be introduced into the spinning nozzle in a predetermined transport direction during the spinning operation. Furthermore, the spinning nozzle comprises an internal swirl chamber and a yarn forming element ra lowing into the swirl chamber.
  • the yarn forming element has an inlet arranged inside the swirl chamber for the yarn formed in the swirl chamber from the fiber structure, a draw-off channel adjoining the inlet and an outlet that forms the end of the draw-off channel, via which the yarn can be drawn out of the spinning nozzle during spinning.
  • the spinneret be designed to be divisible into two spinneret sections along a separating surface, the draw-off channel being in the separating surface and the spinning operation of both spinning nozzle sections is limited.
  • the spinneret can therefore be divided into at least two sections outside of the spinning operation, the division along a parting surface that runs through the draw-off channel during the spinning operation.
  • the separating surface here runs through a longitudinal axis of the exhaust duct, which extends in the aforementioned transport direction.
  • the exhaust duct preferably has an axis of symmetry which lies in the separating surface.
  • the draw-off channel is also opened along its longitudinal axis and is accessible from the outside after the division. On the one hand, this enables the exhaust duct to be cleaned. Likewise, a yarn end can simply be inserted into the take-off channel or one of several take-off channel sections after dividing the spinneret. If the spinneret is then closed again, i.e. If the individual spinneret sections are reunited to form a spinneret, the yarn section is inevitably located within the draw-off duct and therefore no longer has to be threaded through it during the piecing process.
  • the invention particularly provides that the spinneret has a parting surface which runs through the spinning nozzle when the spinneret is in spinning operation, ie when the spinneret is not split, the withdrawal channel lying completely in the parting surface.
  • the separating surface is preferably flat.
  • the spinneret can also be arched interface be divisible.
  • the separating surface has a plurality of sections that are offset or inclined to one another.
  • the spinneret could be divisible in a ratio of 1/3 to 2/3 or 1/4 to 3/4.
  • the spinneret can also be divisible into more than two, for example three or four, spinneret sections.
  • the term divisible does not necessarily mean that the spinneret can be divided into only two spinneret sections or into spinneret sections of the same size.
  • the separating surface runs between two planes which are parallel to one another and are of flat design, the distance between the two planes being between 0.1 mm and 5 mm.
  • the term divisible does not necessarily mean that the spinneret can be separated into two spinneret sections. Rather, there can also be more than two spinneret sections which together form the spinneret in the spinning operation.
  • the individual spinneret sections preferably each comprise part of the yarn-forming element and part of the housing.
  • the draw-off channel can be separated by dividing the spinneret along the separating surface into two at least partially channel-shaped draw-off channel sections.
  • the extraction channel can have a rotationally symmetrical inner surface, although this is not absolutely necessary. If the spinneret is divided along the parting surface, the exhaust duct is also completely divided into two exhaust duct sections, which in turn have the shape of a channel.
  • the separating surface preferably represents a plane of symmetry of the flue.
  • the spinneret sections can be pivoted relative to one another via a pivot axis of the spinneret.
  • the pivot axis is preferably parallel to the longitudinal axis of the flue.
  • the pivot axis lies in the separating surface or runs parallel to it.
  • the pivot axis is formed, for example, by a joint.
  • the joint in turn comprises individual joint sections, each joint section being connected to one of the spinneret sections, in particular to the individual sections of the housing.
  • the hinge sections can in turn be connected to one another via a hinge pin and can thereby be moved relative to one another.
  • the spinneret sections can be displaced relative to one another via a curved or linear guide of the spinneret.
  • the individual housing sections could each have a guided section that interacts with the guide.
  • the guide is rigidly connected to one of the housing sections, the further housing section or sections being movable relative to the guide.
  • At least one of the two spinneret sections has a seal which is located between the two spinneret sections during the spinning operation of the spinneret and at least partially seals the vortex chamber to the outside.
  • the seal can be present, for example, as a sealing cord, which preferably runs in a groove in a housing section.
  • the one in the closed state of the spinneret Further housing section resting on the sealing cord can be flat in the area of the seal or can also have a groove.
  • the respective seal of which there can also be several, preferably extends from a first end face of the spinneret, which comprises the inlet opening, to a second end face of the spinneret, which comprises the outlet of the yarn forming element.
  • the outlet of the yarn-forming element also preferably forms the spinneret outlet via which the yarn leaves the spinneret.
  • the swirl chamber and thus also the yarn forming element should be located in a cross section along the separating surface between the two seals, so that it is sealed off from the outside.
  • the yarn-forming element is designed to be divisible into two sections along the separating surface, each section being part of a respective spinneret section.
  • the parting surface not only divides the take-off channel, but the entire Garn Struktursele element.
  • the separating surface preferably divides the yarn-forming element into two axially symmetrical sections, the axis of symmetry being formed by the longitudinal axis of the take-off channel.
  • the two sections of the yarn formation element are arranged offset from one another in the spinning operation with respect to the separating surface such that one or more steps are present in the area of an outer surface of the yarn formation element.
  • the step (s) can be designed to be sloping in a predetermined direction of rotation of a vortex air flow introduced into the vortex chamber during the spinning operation via air nozzles of the spinning nozzle.
  • the yarn-forming element is formed by the above-mentioned two sections, with both sections having a common connecting plane which in turn is congruent with the parting surface.
  • the steps ensure that the fibers of the fiber structure do not get between the two sections of the yarn formation element or the bumper edge caught between the two sections. Rather, they slide over the steps that are formed sloping in the direction of movement of the fibers.
  • corresponding steps are also present in the region of an inner surface of the yarn forming element that borders the draw-off duct inwardly.
  • the steps should be designed to be sloping in the direction of rotation of the yarn moving through the take-off channel in order to avoid the fibers getting caught between the sections of the yarn-forming element.
  • steps are present both in the area of the outer surface of the yarn forming element, preferably in the area of its inlet, and also in the area of the inner surface of the yarn forming element, which are formed by mutual overlapping of the two sections of the yarn forming element are.
  • the steps are designed in relation to a longitudinal axis of the haul-off channel in such a way that the radial distance between the longitudinal axis of the haul-off channel and the outer surface of the yarn-forming element is reduced in a predetermined circumferential direction of the yarn-forming element in the region of the parting line.
  • circumferential direction should increase the radial distance between the named longitudinal axis and the inner surface of the flue in the area of the separation surface.
  • the inlet opening of the spinneret is formed by a fiber guide element, the fiber guide element being designed to be divisible into two individual sections along the separation surface.
  • the individual sections In the non-split state of the spinneret, the individual sections form a channel section through which the fibers are guided perpendicular to their transport direction when they enter the spinneret.
  • the aforementioned divisibility of the fiber guide element is advantageous. If the spinneret is divided, the two individual sections of the fiber guide element also move apart, so that a returned yarn can be inserted between the two individual sections. If the spinneret is then closed again, the yarn automatically runs through the inlet opening of the spinneret, i.e. it is surrounded on all sides by the fiber guide element.
  • Each individual section should be part of a spinneret section.
  • the housing is designed to be divisible into two housing sections along the separating surface, each housing section being part of a respective spinneret section.
  • the housing includes the outer surface of the spinneret that is visible from the outside and delimits the swirl chamber on the inside.
  • a section of the yarn-forming element and an individual section of the fiber guide element should each be connected to a housing section. The connection can take place here, for example, via a form fit or a force fit.
  • one or more sections of the Garn Struktursele element one or more housing sections or one or more individual sections of the fiber guide element has one or more magnets that hold the corresponding components in the spinning position aneinan.
  • the fiber guide element has a guide section for guiding the fiber structure entering the spinneret, the guide section being part of one of the two spinning nozzle sections and being cut by the separating surface during the spinning operation.
  • the guide section is preferably a surface which laterally deflects the fiber structure entering the spinneret relative to the transport direction. This creates a twist stop which prevents the twist of the fiber structure generated inside the spinneret by the fluidizing air flow from being propagated outside the spinneret, counter to the transport direction.
  • the guide section is formed entirely by one of the individual sections.
  • the individual sections of the fiber guiding element are therefore preferably neither identical nor symmetrical with respect to the separating surface.
  • the two spinneret sections has at least one centering element, with the help of which it is ensured that the two spinneret sections assume a defined relative position to one another during spinning.
  • the centering element can be, for example, a bulge that is part of a spinning nozzle section and, in spinning operation, interacts with a recess in the second spinning nozzle section, which also acts as a centering element.
  • both spinneret sections each Weil have one or more centering elements, half of the centering elements being designed as centering cones and the second half of the centering elements as indentations into which the centering cones engage in spinning operation.
  • At least one of the sections of the yarn-forming element and / or at least one of the individual sections of the fiber guiding element has one or more centering elements.
  • both sections of the yarn formation element and / or both individual sections of the fiber guiding element each have one or more centering elements.
  • the present invention further comprises a yarn formation element for a spinneret of an air-jet spinning machine, the yarn formation element comprising an inlet for a yarn, a withdrawal channel adjoining the inlet and an outlet which forms the end of the withdrawal channel and via which the yarn can be withdrawn from the yarn formation element.
  • the Garnbil formation element is characterized in that it is designed to be divisible into two sections along a separating surface, the withdrawal channel being located in the separating surface. The two sections are preferably identical or are axially symmetrical with respect to a longitudinal axis of the exhaust duct. It is also advantageous if the yarn-forming element has one or more of the features described above or below.
  • the interface extends through the entire flue, i. extends from the inlet to the end thereof and thus to the outlet of the yarn forming element. This ensures that the take-off channel sections are completely exposed when the yarn-forming element is divided into its individual sections and are therefore accessible from the outside.
  • the spinning station preferably comprises a drafting device known from the prior art with a plurality of drafting device rollers which are each rotatable about an axis of rotation.
  • a guided fiber structure stretched and thus evened out before the fiber structure is introduced into the spinneret.
  • the actual yarn production takes place in the spinneret, in that the fiber structure is subjected to a vortex air flow within the vortex chamber of the spinneret.
  • the outer fibers of the fiber composite are looped around an inner lying lowing fiber core.
  • the yarn produced in this way is finally withdrawn from the spinning nozzle via the withdrawal channel of the yarn forming element and then played onto a sleeve of a winding section of the spinning station.
  • the spinneret has the separating surface described so far or below, so that the spinneret can be divided into two spinneret sections which can be moved apart by dividing or pivoted relative to one another.
  • the spinneret also has one or more of the features disclosed above and / or below.
  • At least one axis of rotation lies in the separating surface of the spinneret or runs parallel to the separating surface.
  • at least one of the axes of rotation is oriented at right angles or at an angle to the trend plane.
  • the spinneret has a pivot axis or a guide described above, a first spinneret section being rigidly fixed to a holding section of the spinning station and the second spinneret section pivotable relative to the first spinneret section with the help of the pivot axis and / or the guide and / or is displaceable.
  • the rigidly fixed spinneret section thus always has a fixed, predetermined position in space both in the spinning position and after the division of the two spinneret sections. This ensures that the spinning nozzle as a whole always has a known spatial orientation in the spinning position, so that reproducible yarn production is ensured.
  • the present invention relates to a method for opening a spinning nozzle of an air-jet spinning machine with a take-off channel for a yarn produced from a fiber structure with the aid of the spinning nozzle.
  • the spinneret is designed as described above or below. According to the invention it is provided that the spinneret is divided into two spinneret sections along the already described parting surface, the discharge channel being located in the parting surface.
  • the spinneret is preferably opened by pivoting a spinneret section relative to a second spinneret section rigidly fixed to a holding section of the spinning station or by moving it away from the second spinneret section on a straight or curved guide path.
  • the spinneret is integrated into the spinning station and attached to a holding structure in such a way that when the spinneret is opened, both spinneret sections are pivoted or moved relative to the holding structure.
  • both two housing sections of the spinneret and two sections of the yarn forming element and two individual sections of the fiber guide element of the spinneret should be moved relative to one another.
  • the present invention comprises a method for piecing a spinning nozzle of an air-jet spinning machine, the spinning nozzle preferably being designed according to the previous or following description.
  • a yarn end is created on the spool-side (i.e. a yarn end of the yarn that has already been wound onto a tube to form a spool). In a subsequent piecing process, this yarn end must be brought into contact again with the fiber structure supplied by the drafting system in order to be able to resume the spinning process.
  • the spinneret is divided into two spinneret sections along a separating surface after the interruption of a spinning operation.
  • the parting surface here runs both through the yarn forming element and through the take-off channel as well as through the inlet opening of the spinneret.
  • the flue duct lies completely in the separating surface.
  • the yarn coming from the yarn bobbin is then inserted between the two spinneret sections, the yarn preferably being in contact only with sections of one of the two spinneret sections after it has been introduced.
  • the yarn should be inserted in such a way that it runs within a draw-off channel section before the spinneret sections are closed.
  • the two spinneret sections are then brought together again, the yarn after being brought together extending through an inlet opening into a swirl chamber of the spinneret and from there through an outlet duct of the yarn forming element of the spinneret. Finally, the yarn end protruding from the inlet opening is brought into contact with a fiber composite.
  • the spinning operation is then resumed, the previously stopped drafting system being activated again and the yarn protruding from the spinneret via the outlet of the yarn-forming element being rewound onto the tube.
  • the present invention now provides that the spinneret is first opened by moving two spinneret sections relative to one another in such a way that the vent is divided into two vent sections, both vent sections being accessible from the outside after the spinneret has been opened .
  • the section of the spinneret which comprises the inlet opening of the spinning nozzle is divided into two sections when the spinneret is opened.
  • two sections of a fiber guide element forming the inlet opening are moved apart.
  • a yarn end is placed between the two spinneret sections and the spinneret sections are then moved towards one another or connected to one another again.
  • the spinneret resumes its closed shape and position, which it had before the spinneret was opened.
  • the spinning operation can then be resumed.
  • at least one of the spinneret sections when brought together has a movement component which runs parallel to the parting surface.
  • the two spinneret sections are therefore preferably not moved towards one another in a linear movement when the spinneret is closed. Rather, it is advantageous if at least one spinning nozzle section is moved on a curved path or by a pivoting movement.
  • FIG. 1 selected sections of a spinning station of an air-jet spinning machine
  • Figure 2 is a plan view of a spinneret according to the invention.
  • Figure 3 is a front view of a further embodiment of an inven
  • FIG. 4 shows a spinneret section of a spinning nozzle according to the invention
  • Figure 5 is a perspective of a housing of an inventive
  • FIG. 6 shows two sections of a yarn formation element according to the invention
  • Figure 7a is a plan view of a yarn formation element according to the invention.
  • FIG. 7b shows a side view of a yarn forming element according to the invention.
  • Figure 8 is a plan view of a further yarn formation element according to the invention.
  • Figure 1 shows selected sections of a spinning station of an air-jet spinning machine.
  • the spinning station comprises a drafting device 27 with several drafting device rollers 29, which are each driven about an axis of rotation 28 (the drive is not shown). As a result of different speeds of the drafting device rollers 29, there is a distortion and thus an equalization of a fiber strand 3 passing through the drafting device 27.
  • the fiber structure 3 After passing through the drafting system 27, the fiber structure 3 is introduced into a spinneret 1 via an inlet opening 5, in which the fiber structure 3 is subjected to a vortex air flow. As a result, the outer fibers of the fiber bandage 3 are looped around the inner core fibers of the fiber bandage 3, so that a yarn 2 is created with a real twist.
  • the yarn 2 finally leaves the spinneret 1 via the outlet 10 of a yarn-forming element 7 arranged within the spinneret 1 and can then be played onto a tube so that a bobbin 31 is produced. If a yarn break or any other interruption in yarn production occurs during the spinning operation, the yarn 2 detaches from the fiber structure 3, so that a yarn end is created. In a subsequent spinning process, this end of the yarn must be brought into contact with the fiber structure 3 so that it can then be re-introduced into the spinneret 1 together with the fiber structure 3.
  • the present invention therefore proposes an alternative possibility which makes the mentioned threading process superfluous.
  • the spinneret 1 now comprises at least two spinneret sections 12 which, during the spinning operation, bear against one another along a separating surface 11.
  • the spinneret 1 is now made divisible along the parting surface 11, i. E. both spinneret sections 12 are movable relative to one another.
  • FIG. 2 shows a solution in which the two spinneret sections 12 are connected to a guide 15 via a guided section 32 each.
  • the two spinneret sections 12 can be moved apart along the guide 15 in the direction of the two arrows shown. This opens the spinneret 1.
  • the separating surface 11 runs both through the inlet opening 5 of the spinneret 1 and its outlet opening, which is formed by an outlet 10 of the yarn formation element 7, which will be explained in more detail below.
  • a spinneret section 12 is rigidly connected to the guide 15 or a holding section 30 of the spinning station, so that only one of the two spinneret sections 12 is movably supported.
  • the two spinneret sections 12 can be moved relative to one another, whereby the spinneret 1 can be opened in a simple manner. After opening the spinneret 1, the yarn 2 can finally be inserted between the two spinning nozzle sections 12. If the two spinneret sections 12 are finally brought together again, the yarn 2 extends through the spinneret 1 without a threading process being necessary for this.
  • FIG. 3 shows an alternative possibility.
  • the spinneret 1 has a separating surface 11 which runs through the inlet opening 5 of the spinneret 1 and also the outlet 10 of the yarn forming element 7.
  • the two spinneret sections 12 are connected via a joint 33, so that the two spinneret sections 12 can be pivoted relative to one another about a pivot axis 14.
  • one of the two spinneret sections 12 is rigidly connected to a holding section 30, so that only the second spinneret section 12 is pivotably mounted.
  • the spinneret 1 in principle has a housing 4, the housing 4 comprising at least two housing sections 24, each of which can be moved relative to one another as part of a spinneret section 12.
  • the spinneret section 12 basically comprises a housing section 24 as well as an individual section 23 of a fiber guide element 22, which is likewise designed to be divisible, and which guides the one entering the spinneret 1 Fiber bandage 3 is used. At the same time, the fiber guide element 22 forms the inlet opening 5 of the spinneret 1.
  • FIG. 4 shows that one half of the swirl chamber 6 is arranged within the spinneret section 12, in which half of the air introduced via air nozzles 21 of the spinneret 1 during the spinning operation generates a swirl air flow.
  • This vortex air flow causes the desired Umschlin supply of the core fibers of the imported fiber composite 3 by the same outer lying fibers.
  • the yarn 2 thus formed enters the withdrawal channel 9 via an inlet 8 of the yarn formation element 7 or is only formed in the area of the inlet and is finally withdrawn from the spinneret 1 via the outlet 10 of the yarn formation element 7.
  • the spinneret section 12 according to FIG. 4 thus also contains only a section of the yarn forming element 7.
  • the spinneret section 12 shown in FIG. 4 thus forms one half of the spinneret 1, the spinneret section 12 not only including a section 17 of the yarn forming element 7 but also an individual section 23 of the fiber guiding element 22.
  • Both spinneret sections 12 of a spinneret 1, only one of which is shown in FIG. 4, are of essentially identical design.
  • at least one of the two spinneret sections 12 has one or more seals 16.
  • FIG. 4 shows that the spinneret 1 preferably has a suction opening 34 via which air, which is introduced via the air nozzles 21, can be discharged during operation of the spinneret 1.
  • the suction opening 34 is part of exclusively a spinneret section 12 and lies outside the separating surface 11, so that no seal is necessary here.
  • FIGS 5a (closed spinneret 1) and 5b (open spinneret 1) now show a further advantageous feature of a spinneret 1 according to the invention, only the two housing sections 24 and the individual sections 23 of the fiber guide element 22 being shown.
  • the separating surface 11 extends through the fiber guide element 22.
  • this has a guide section 25 for the fiber structure 3, which is formed in one piece. This has the advantage that the fibers of the fiber structure 3 cannot get caught or get caught in a parting line of the guide section 25 when the fiber structure 3 is drawn into the spinneret 1 during the spinning operation.
  • FIG. 6 shows the two sections 17 of a yarn forming element 7, which form the yarn forming element 7 after being brought together.
  • both sections 17 have several centering elements 26, with part of the Zentrierele elements 26 being formed as protruding centering cones and another part as recesses protruding into the sections 17 of the yarn forming element 7. If the two sections 17 of the yarn forming element 7 are joined together, the centering cones engage in the depressions and cause a correct mutual alignment of the two sections of the yarn forming element 7 (for reasons of clarity, only some of the centering elements 26 are provided with a reference number).
  • the outer fibers of the fiber composite 3 are looped around the inner core fibers during yarn production.
  • the outer fibers move in the direction of the arrow shown in FIG. 7a in a circular motion around the outer surface 18 of the yarn forming element 7.
  • take-off channel 9 now consists of two take-off channels 13, as provided, which rest against one another during the spinning operation, there is a risk that fibers will become entangled in the contact area between the two sections 17.
  • the two sections 17 of the yarn forming element 7 overlap in such a way that steps 20 arise at least in the area of the inlet 8.
  • the steps 20 are designed in such a way that the fibers of the fiber structure 3 or of the yarn 2 exist during the movement along the outer surface 18 of the Garn Struktursele element 7 or the inner surface 19 of the take-off channel 9 are guided over falling steps 20. So to a certain extent, levels 20 have a spoiler effect and prevent the fibers from getting caught or arrested in the area of the separating surface 11.
  • FIG. 8 shows a further possible feature of a yarn-forming element 7 according to the invention.
  • steps 20 are also present in the embodiment shown in FIG. 8 in order to prevent damage to the fibers passing through.
  • the two sections 17 of the yarn forming element 7 engage one another (see the dashed lines).
  • the separating surface 11 is not flat, but comprises three sections running parallel to one another.
  • the interlocking can be designed such that corresponding step sections are also formed in the area immediately surrounding the inlet 8 of the yarn forming element 7.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne une filière (1) pour une machine à filer à jet d'air, la filière (1) étant conçue pour produire un fil (2) dans une opération de filage à partir d'un assemblage de fibres (3) fourni à la filière (1), la filière (1) comprenant un logement (4) comportant une ouverture d'entrée (5) par laquelle l'assemblage de fibres (3) peut être introduit dans la filière (1) dans l'opération de filage. La filière (1) comprend une chambre de tourbillonnement (6) interne, ladite filière (1) ayant un élément de formation de fil (7) faisant saillie dans la chambre de tourbillonnement (6), qui a une entrée (8) disposée à l'intérieur de la chambre de tourbillonnement (6) pour le fil (2) formé dans la chambre de tourbillonnement (6) à partir de l'assemblage de fibres (3), comprend un canal de levée (9) se raccordant à l'entrée (8) et une sortie (10) formant l'extrémité du canal de levée (9), par laquelle le fil (2) peut être retiré de la filière (1) pendant l'opération de filage, caractérisé en ce que la filière (1) est conçue de manière à pouvoir être divisée le long d'une surface de séparation (11) en au moins deux sections de filière (12). Le canal de levée (9) se trouve dans la surface de séparation (11) et est délimité par les deux sections de la filière (12) pendant l'opération de filage.
PCT/EP2020/053146 2019-02-11 2020-02-07 Filière pour machine à filer à jet d'air et procédé pour ouvrir une telle filière WO2020165044A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080013598.1A CN113439134A (zh) 2019-02-11 2020-02-07 一种用于喷气纺纱机的纺纱喷嘴以及用于打开这种喷气纺纱机的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019103271.7A DE102019103271A1 (de) 2019-02-11 2019-02-11 Spinndüse für eine Luftspinnmaschine sowie Verfahren zum Öffnen einer solchen
DE102019103271.7 2019-02-11

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WO2020165044A1 true WO2020165044A1 (fr) 2020-08-20

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DE102015100825A1 (de) 2015-01-21 2016-07-21 Maschinenfabrik Rieter Ag Spinndüse einer Luftspinnmaschine sowie Verfahren zum Öffnen derselben

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JPH03124816A (ja) * 1989-10-04 1991-05-28 Murata Mach Ltd 空気紡績ノズル
EP1217109A2 (fr) * 2000-12-22 2002-06-26 Maschinenfabrik Rieter Ag Dispositif de filage
EP2573220A2 (fr) 2011-09-21 2013-03-27 Murata Machinery, Ltd. Unité de filature et fileuse
DE102015100825A1 (de) 2015-01-21 2016-07-21 Maschinenfabrik Rieter Ag Spinndüse einer Luftspinnmaschine sowie Verfahren zum Öffnen derselben

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