EP3052683A1 - Élément de guidage de fibres pour filière de machine à filer à jet d'air et poste de filage ainsi équipé - Google Patents

Élément de guidage de fibres pour filière de machine à filer à jet d'air et poste de filage ainsi équipé

Info

Publication number
EP3052683A1
EP3052683A1 EP14792855.0A EP14792855A EP3052683A1 EP 3052683 A1 EP3052683 A1 EP 3052683A1 EP 14792855 A EP14792855 A EP 14792855A EP 3052683 A1 EP3052683 A1 EP 3052683A1
Authority
EP
European Patent Office
Prior art keywords
guide element
fiber guide
fiber
central axis
guiding element
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.)
Granted
Application number
EP14792855.0A
Other languages
German (de)
English (en)
Other versions
EP3052683B1 (fr
Inventor
Susanne Kaiser
Jürgen Kübler
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
Publication of EP3052683A1 publication Critical patent/EP3052683A1/fr
Application granted granted Critical
Publication of EP3052683B1 publication Critical patent/EP3052683B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 fiber guiding element for a spinning nozzle of an air spinning machine, which serves to produce a yarn from a fiber structure, wherein the fiber guiding element has a base body with an outer surface which serves to abutment against a counter surface of a spinning nozzle of the spinning station, thereby the fiber guiding element in the area to be able to fix an inlet opening of the spinneret, and wherein the fiber guiding element has an inner surface, which is brought into contact with the fiber structure during operation of the spinneret and serves to guide it.
  • Air-jet spinning machines with corresponding fiber guiding elements or spinning stations equipped therewith are known in the prior art (see, for example, DE 40 36 119 C2) and are used to produce a yarn from an elongated fiber composite.
  • the outer fibers of the fiber composite are wound around the inner core fibers by means of a vortex air flow generated by the air nozzles within the vortex chamber in the area of the aforementioned inlet mouth of the yarn formation element and finally form the binder fibers which determine the desired strength of the yarn.
  • This results in a yarn with a true rotation, which finally discharged via the discharge channel from the vortex chamber and z. B. can be wound on a spool.
  • the term yarn generally means a fiber structure in which at least some of the fibers are wound around an inner core.
  • a yarn is included in the traditional sense, which can be processed into a fabric, for example with the aid of a weaving machine.
  • the invention also relates to air spinning machines, with the help of so-called roving (other name: Lunte) can be produced.
  • roving other name: Lunte
  • This type of yarn is characterized by the fact that, despite a certain strength, which is sufficient to transport the yarn to a subsequent textile machine, it is still delayable.
  • the roving can thus with the help of a defaulting device, z. B. the drafting system, a the roving-processing textile machine, such as a ring spinning machine, are warped before it is finally spun.
  • the rotation generated in the region of the yarn formation element does not propagate outwardly beyond the inlet opening in the direction of transport of the yarn or fiber composite. In other words, it should therefore be ensured that the fibers of the fiber composite retain their original orientation prior to contact with the vortex air flow and only receive the corresponding rotation within the vortex chamber. If, in fact, the rotation would propagate counter to the transport direction, the associated reverse rotation of the fiber composite would inevitably lead to a reduced resilience of the fiber composite in the area of a drafting device arranged upstream of the vortex chamber.
  • the object of the present invention is therefore to propose a fiber guiding element or a spinning station equipped therewith for an air-spinning machine which has a further Tere improvement of the fiber guide in the area between pair of delivery rollers and swirl chamber causes.
  • the fiber guide element has an inner surface which comprises a plurality, preferably radially, inwardly directed bulges in a cross section of the fiber guiding element perpendicular to a central axis of the fiber guiding element, wherein at least a part of the bulges at least in a front region facing the central axis an inwardly tapering Has contour.
  • the fiber guide element has an inner surface (in the installed state of the fiber guide element comes into contact with the fiber structure and takes over its leadership), the contour of which deviates from a cylinder shell or has elevations and indentations, which cause an increase in surface area.
  • the bulges (or at least a majority of them) have an inwardly tapered contour in their front region facing the central axis (that is, in the region which extends furthest in the direction of the central axis), jamming of the fibers is excessive
  • inside in this case refers to the space surrounded by the bulges of the fiber guide element, which serves the passage of the fibers.
  • the inner surface in the said cross section at least partially a zigzag and / or at least partially undulating course
  • the fiber guide element according to the invention also has an inner surface which is circumferentially closed in cross-section so that the term is zigzag-like should not be misunderstood to be a straight-line section.
  • the zig-zag or wave-shaped sections extend, for example annularly, around the inner cavity of the fiber guiding element, which in turn serves for the passage of the fibers or of the fiber bandage.
  • the inner surface can be formed exclusively by zigzag or wavy sections. However, it is also conceivable that corresponding sections alternate or that a part of the inner surface follows the contour of a cylinder jacket or, for example, has an oval or polygonal shape in said cross section.
  • the mentioned path is formed by bulges that extend in the cross section of the fiber guiding element in the direction of a central axis of the fiber guiding element.
  • the inner surface thus has, for example, a star shape in said cross-section, wherein the bulges may extend in a longitudinal section of the fiber guiding element over the entire length or only over a certain longitudinal section of the fiber guiding element.
  • all lobes have the same radial extent in the direction of a central axis of the fiber guide element (alternatively, the amounts of the radial extensions of the individual lobes can also be different in size and increase and decrease several times in the circumferential direction of the fiber guide channel formed by the fiber guide element).
  • the tapered portions may be formed sharp or rounded, in the latter case, damage to the fiber composite regardless of its physical nature (fiber type, staple length, fiber diameter, etc.) can be virtually eliminated.
  • the bulges extend parallel to a central axis of the fiber guiding element.
  • the bulges in this case extend in the planned transport direction of the fiber composite, so that the guide thereof takes place almost exclusively in the radial direction.
  • the transport direction of the fiber composite is in contrast to this almost no positive guidance given the same, so that friction-related negative effects on the fiber transport are not to be feared.
  • the bulges could also be helical (with respect to the central axis of the fiber guiding element), wherein the winding could run in the intended direction of rotation of the fiber composite in the region of the yarn formation element or opposite thereto.
  • the inner surface comprises valleys and mountains which are arranged adjacent to one another in said cross section of the fiber guiding element, wherein at least a part of the mountains in said cross section is placed closer to the central axis than at least a part of the valleys.
  • the bulges could each have two wall sections defining the inner surface of the fiber guide element, wherein two adjacent wall sections each would define a mountain and one of the wall sections would define a valley with a further adjacent wall section.
  • the mountains and / or valleys can be tapered (although here too, the above-mentioned rounding can be realized).
  • the valleys and / or mountains are formed by wall sections of the fiber guiding element, which are at least largely planar.
  • the inner surface would in this case at least for the most part be formed by said wall sections which, viewed in cross-section of the fiber guide element, extend, for example, in a zigzag shape around the centrally extending fiber guide channel.
  • two adjacent wall sections in an area of the fiber guide element enclose an angle ⁇ whose magnitude lies between 10 ° and 70 °, preferably between 20 ° and 60 °, particularly preferably between 30 ° and 50 °.
  • Said ranges relate both to the angle (a1) forming two adjacent wall sections forming a mountain and to the angle (a2) formed by two adjacent wall sections forming a valley. Both angles can also be the same or different. In any case, it is advantageous if both angles lie in one of said areas.
  • the valleys and mountains in the said cross section of the fiber guide element have inflection points, wherein the turning points of the valleys and / or the mountains each on a circle, an oval or a, in particular the inflection point of a valley is here defined as the point of the valley whose distance to the central axis is maximum, the turning point of a mountain is defined as the point of the mountain whose distance to the central axis is minimal) ,
  • the bulges described above extend inwardly from an imaginary circle with respect to the central axis of the fiber guide element, wherein the areas with maximum radially inward extension also lie on a circle.
  • both the mountains and the valleys lie on an oval or the mentioned polygon (eg a triangle or a quadrangle).
  • the fiber guiding element can, for example, have a cylindrical basic shape, wherein the valleys and / or mountains, or the valleys and hills forming bulges, can be arranged identically distributed seen in the circumferential direction of the fiber guide channel.
  • the circle defined by the mountains has a diameter D1 whose magnitude is between 1.0 mm and 10.0 mm, preferably between 2.0 mm and 7.0 mm, more preferably between 4.0 mm and 5.0 mm.
  • the circle defined by the valleys has a diameter D2 whose magnitude is between 5 mm and 15 mm, preferably between 6 mm and 12 mm, particularly preferably between 7 mm and 9 mm ,
  • the valleys and mountains have inflection points in a cross section of the fiber guide element, wherein the minimum distance of the points of inflection of the valleys to the central axis of the fiber guide element is constant and / or wherein the minimum distance of the turning points of the mountains to the central axis of the fiber guide element is constant ,
  • the turning points (or in a nem longitudinal section of the fiber guiding element: turning lines) can in turn here be sharp-edged or rounded.
  • the fiber guiding element has at least in the region of at least one of its end faces extending through the central axis a wedgelstumpfförmigen space bounded by an inwardly directed wall of the fiber guide element, wherein the lateral surface of the truncated cone in a longitudinal section of the fiber guide element has at least one at least partially rectilinear outer contour.
  • the free space can also correspond to the shape of a spherical layer (other designation: spherical disk), so that the lateral surface of the truncated cone can have at least one partially convex or partially concave outer contour in a longitudinal section of the fiber guiding element.
  • the bulges in the region of the free space run obliquely inwards, so that a kind of funnel is formed (that is, the inner diameter seen in the cross section of the fiber guide element changes in the region of the free space in the longitudinal direction of the fiber guiding element).
  • the free space bounding wall of the fiber guide element is smooth.
  • the clearance can be created in this case by a drilling or milling process.
  • a gentle inlet and / or outlet of the fiber composite results in and / or from the fiber guide element (the free space can be arranged in the installed state of the fiber guide element on the front side of the fiber guide element facing away from the vortex chamber).
  • the free space bounding wall merges into the bulges, so that a smooth transition from non-leading to leading wall sections is present.
  • the wall bounding the free space of the fiber guide element in an extending through a central axis of the fiber guide element longitudinal section of the fiber guide element with the central axis an angle ß includes the amount between 30 ° and 60 °, preferably between 40 ° and 50 °, more preferably between 42 ° and 48 °.
  • the wall delimiting the free space is preferably designed axisymmetrically or rotationally with respect to the central axis of the fiber guiding element (at least for the most part).
  • the fiber guiding element has a maximum outer diameter that tapers in a longitudinal direction of the fiber guiding element, at least in the region of one of its end faces extending through the central axis.
  • the fiber guide element thus runs in this area, for example in the transport direction, pointedly.
  • the corresponding end face in a longitudinal axis parallel to the central axis extending longitudinal section of the fiber guide element may be formed frusto-conical, wherein the lateral surface of the truncated cone in said longitudinal section may have at least one at least partially rectilinear, partially convex and / or partially concave outer contour.
  • the contact area between the fibers and the bulges extending into this area increases gradually in the direction of the larger outer diameter, so that a gentle inlet or outlet of the fibers into or out of the fiber guiding element (FIG. depending on which end face the diameter taper is) is ensured.
  • the center of gravity of the fiber guiding element lies on the central axis of the fiber guiding element.
  • the fiber guiding element preferably has a shape which is axisymmetric with respect to the central axis. Due to the properties mentioned, incorrect installation of the fiber guiding element is prevented, since the fiber guiding element always ensures a uniform radial guidance of the fiber strand, irrespective of any possible rotation about its center axis.
  • the fiber guide element is formed in one piece, since this allows a particularly simple production.
  • the fiber guiding element can also be composed of a base body and an insert, wherein the inner surface designed according to the invention could be formed by the insert.
  • the inner surface at least largely extends parallel to the central axis of the fiber guide element.
  • the cross-section has a constant shape over at least the major part of the longitudinal extent of the fiber guiding element.
  • the fiber guide element has a fixed to its base body or formed by this central guide element which is at least partially surrounded by the inner surface of the fiber guide element. The middle guide element is thus located in a region which has to be passed by the fiber bundle entering through the inlet opening of the vortex chamber.
  • the middle guide member ensures that a portion of the fibers of the fiber composite are forced outwards and thus particularly effectively detected by the air vortex flow generated by the air nozzles and the middle, untwisted Fiber band core can be looped.
  • the middle guide element extends at least in sections on the central axis of the fiber guide element, so that it is ensured that the said guide element is surrounded by the fiber structure passing in the installed state.
  • the fiber guide element has one or more guide sections, for example in the form of guide pins or guide plates, which, starting from the inner surface of the fiber guide element, extend inwards, preferably in the direction of a central axis of the fiber guide element. While it has been proven in the case of thorns to provide them with a pointed end, the plates may be rounded off to one or more sides in order to avoid damage to the passing fibers. The plates also preferably extend radially inwardly and may be equally spaced and / or extend inwardly from the peaks and / or valleys.
  • the spinning station according to the invention is distinguished by the fact that its spinneret (that is to say the section having the vortex chamber) has a fiber guide channel disposed upstream of the vortex chamber in the transport direction of the fiber composite, which is at least partially formed by a fiber guide element according to the previous description.
  • an end of the middle guide element facing an exit opening of the withdrawal channel is placed between the inlet mouth of the yarn formation element protruding into the vortex chamber and the inlet opening of the vortex chamber.
  • the above-described central guide element extends further in the direction of an outlet opening of the exhaust duct than said guide sections.
  • at least part of the guide sections and / or the middle guide element extends into the trigger channel. It is also advantageous if the minimum distance between two guide sections is greater than the minimum distance between a respective guide section and an end of the central guide element facing an outlet opening of the trigger channel.
  • the guide sections each have an end facing away from an exit opening of the withdrawal channel and an end facing away from the exit opening, wherein an end of the central guide element facing the exit opening of the withdrawal channel is located in a section between the segments parallel to the longitudinal axis of the withdrawal channel respective ends of the guide portions is placed. It is particularly advantageous if both the middle guide element and the guide sections each have an end facing the outlet opening of the draw-off channel, said ends of the guide sections concentrically placed in a section running perpendicular to the longitudinal axis of the draw-off channel around said end of the middle guide element are. It is likewise advantageous if the minimum distance between two guide sections is smaller than the diameter of the discharge channel in the region of the inlet mouth of the yarn-forming element.
  • At least one guide section with the longitudinal axis of the discharge channel forms an angle ⁇ , the amount of a value between 10 ° and 50 °, preferably a value between 20 ° and 40 °, particularly preferably a value between 25 ° and 35 °, occupies. It also brings advantages if, in the absence of the fiber dressing, at least two guide sections contact one another and / or at least one guide section and the middle guide element. Finally, it may be advantageous if the guide sections and / or the middle guide element Part of an insert, which is mounted stationary or movable with respect to the vortex chamber.
  • FIG. 1 shows a partially sectioned section of a spinning station of an air-spinning machine
  • FIG. 2 shows a perspective view of a fiber guide element according to the invention
  • FIG. 3 shows the fiber guide element shown in Figure 2 in a front view
  • FIG. 4 shows a longitudinal section of a fiber guiding element according to the invention
  • FIGS. 5 and 6 are side views of two further fiber guide elements according to the invention.
  • Figures 7 to 12 are front views of inventive fiber guide elements.
  • FIGS. 13 to 16 show different embodiments of a (partially) sectioned section of a spinning station according to the invention.
  • Figure 1 shows a schematic view of a section of a spinning unit 32 of an air spinning machine (the air spinning machine of course, a plurality of, preferably adjacent to each other, spinning units 32 may have).
  • the air-spinning machine can comprise a drafting device 27, which is supplied with a fiber structure 4, for example in the form of a relined conveyor belt.
  • the spinning unit 32 shown comprises a spinneret 2 with an internal swirl chamber 18, in which the fiber structure 4 or at least a part of the fibers of the fiber composite 4 is provided with a rotation (the exact mode of operation of the spinning position 32 will be described in more detail below).
  • the air-spinning machine a pair of take-off rollers 31 and a Abziehevalzencru 31 downstream winding device 29 (also shown schematically) with a coil 30 for winding up the spinning unit 32 leaving yarn 3 include.
  • the spinning station 32 according to the invention need not necessarily have a drafting device 27, as shown in FIG. Also, the take-off roller pair 31 is not absolutely necessary.
  • the spinning unit 32 shown generally operates according to an air spinning process.
  • the fiber structure 4 is guided via a fiber guide element 1 provided with an inlet opening 8 into the swirl chamber 18 of the spinning station 32 (see also FIGS. 13 to 16). There it receives a rotation, d. H. at least a portion of the free fiber ends 28 of the fiber composite 4 is detected by an air flow, which is generated by correspondingly arranged in a vortex chamber 18 surrounding the vortex chamber wall 20 air nozzles 19. A part of the fibers is in this case pulled out of the fiber structure 4 at least a little bit and wound around the tip of a protruding into the vortex chamber 18 Garnsentelements 21.
  • the yarn 3 produced may in principle be any fiber composite which is characterized in that an external part of the fibers (so-called binding fibers) is an inner, preferably untwisted or, if required, also turned part the fibers, is wrapped around to give the yarn 3 the desired strength.
  • an air-spinning machine with the aid of which so-called roving can be produced.
  • Roving is a yarn 3 with a relatively small proportion of binding fibers, or a yarn 3 in which the conversion Windefasern are relatively loosely wrapped around the inner core, so that the yarn 3 remains delayable. This is crucial if the produced yarn 3 on a subsequent textile machine (for example, a ring spinning machine) is to be distorted again with the help of a drafting system 27 or must, in order to be further processed accordingly.
  • the individual air nozzles 19 are in this case arranged rotationally symmetrical to one another and open tangentially into the swirl chamber 18 (otherwise, the air nozzles 19 are not shown in FIGS. 13 to 16 for reasons of clarity).
  • the spinning stations 32 known from the prior art preferably also have a swirl-blocking element, for example inserted into the fiber-guiding element 1.
  • This may be formed, for example, as a pin partially entwined by the fibers and prevents rotation in the fiber structure 4 from propagating counter to the transport direction T of the fiber composite 4 and thus in the direction of the inlet opening 8 of the fiber guiding element 1 (this would have negative effects on the yarn formation process because the corresponding rotation after passing through the inlet mouth 22 of the Garnsentelements 21 dissolve again and would partially cancel the granted rotation.
  • edge 36 shown in FIG. 1 or comparable centrally arranged elements can always act only on the inside of the fiber structure 4 surrounding the twist-retaining element, its effect is limited.
  • the spinning unit 32 according to the invention now has a novel fiber guide element 1, which is a reverse planting of the rotation against the Transport direction T of the fiber composite 4 counteracts, without thereby reducing the number of desired Umwindemaschinen excessively or to cause an unwanted mechanical stress of the fiber composite 4.
  • the fiber guiding element 1 is characterized by the fact that the inner surface 9 in a cross section of the fiber guiding element 1 extending perpendicularly to a central axis 11 of the fiber guiding element 1 a plurality of, preferably radially, inwardly directed bulges 10, wherein at least a portion of the bulges 10 at least in one of the central axis 11 facing front region 33 has an inwardly tapering contour.
  • the inner surface 9 of the fiber guiding element 1 can have a zigzag-like profile, for example in a cross section of the fiber guiding element 1 (see, for example, FIGS. 2 and 3).
  • the inner surface 9 is formed by a plurality of bulges 10, which in turn define a sequence of alternating valleys 12 and mountains 13.
  • the valleys 12 and 13 mountains limiting wall portions 14 of the fiber guide element 1 at least partially parallel to a central axis 1 of the fiber guide element 1, as shown for example in Figure 2.
  • the wall sections 14 also advantageously define an angle a, the magnitude of which is between 10 ° and 70 °, preferably between 20 ° and 60 °, more preferably between 30 ° and 50 °.
  • the fiber guide element 1 which simultaneously forms the fiber guide channel 24 of the spinning station 32 (see Figures 13 to 16, the Fiber guide element 1 in a possible installation state show, in which the outer surface 6 of the same on a corresponding mating surface 7 of the spinneret 2 positive and / or non-positively applied), so come the outer fiber components with said mountains 13 in contact. This results in a kind of positive engagement, which finally prevents the generated in the vortex chamber 18 rotation of the fibers against the transport direction T can propagate beyond the fiber guide element 1 addition.
  • the valleys 12 and mountains 13 can be distributed uniformly over the circumference of the preferably centrally extending fiber guide channel 24 (as shown in the figures), so that the dimensions of the respective peaks 13 and valleys 12 correspond to each other.
  • the fiber guide element 1 it would of course also be possible to provide the fiber guide element 1 with mountains 13 and valleys 12 whose dimensions vary with each other (see, for example, Figure 9).
  • the respective turning points 25 of the inner surface 9 can be formed as an edged (see, for example, FIG. 3) or else rounded (see, for example, FIGS.
  • the main body 5 of the fiber guide element 1 (which is preferably formed in one piece as shown) does not necessarily have to have a round outer contour in cross-section, as shown for example in FIG. Rather, a cross-sectionally oval (FIG. 8) or polygonal shaping is also conceivable.
  • a circular shape see, for example, FIG. 3
  • shapes deviating therefrom for example an oval (see FIG.
  • FIGS. 10 to 12 Further possible cross-sectional shapes are also shown in FIGS. 10 to 12.
  • the valleys 12 are formed in part by the outer contour of bores (compare FIGS. 0 and 1).
  • the valleys 12 and / or the mountains 13 may be flattened or rounded concave or convex (FIG. 12).
  • at least one of the arranged in the region of the end faces 34 walls 16 of the fiber guide element 1 is inclined inwards, so that a frusto-conical space 15 is formed. If only one end face 34 is designed accordingly, then the fiber guide element 1 in the installed state (see FIGS.
  • the angle ⁇ which includes the wall 16 surrounding the free space 15 with the central axis 11 of the fiber guide element 1, should furthermore have an amount which is between 30 ° and 60 °, preferably between 40 ° and 50 °, particularly preferably between 42 ° and 48 °, where the said walls can also be slightly convex or concave, if necessary, thus lying, for example, on the surface of an imaginary sphere).
  • the fiber guiding element 1 has at least in the region of one of the end faces 34 an outwardly curved portion, as shown by way of example in Figures 5 and 6 and in a, preferably in the intended transport direction T of Yarn 3, tapered outer diameter D3 of the fiber guide element 1 results.
  • the named section may, for example, follow the basic basic shape of a truncated cone, the outwardly facing lateral surface 35 of which may have a convex (FIG. 5), concave (FIG. 6) or rectilinear (not shown) outer contour in the side view respectively shown.
  • FIGS. 13 show by way of example a fiber guiding element 1 according to FIG. 2 in a state built into the spinneret 2 and FIGS. 14 to 16, it may finally be advantageous to additionally arrange the fiber guiding element 1 with one or more guide sections spaced apart from each other 17 equip (in the figures 15 and 16, for example, four), the mutual distance decreases in the transport direction T of the fiber strand 4 (at least in sections).
  • the spinning station 32 in this case has several, from au- Shen acting on the fiber structure 4, elements which converge in the transport direction T of the fiber composite 4 to each other. Therefore, the fiber structure 4 inevitably comes into contact with the guide sections 17 and, to a certain extent, grips it from the outside, so that rotation thereof is additionally prevented in the region of the guide sections 17.
  • the guide arrangement further comprises at least one middle guide element 26 (see FIG. 16) ), which extends, for example, in a direction perpendicular to the central axis 11 of the fiber guide element 1 extending section between the guide portions 17. While now the outer guide portions 17 and the bulges 10 cause a guiding of the fiber composite 4 "from the outside", the middle guide member 26 is during the yarn production in a sense "inside" of the fiber strand 4 and thus causes it to be pushed apart.
  • the middle guide member 26 takes place by the middle guide member 26, a deflection of the fibers to the outside, or geometrically expressed, perpendicular to the central axis 1 of the fiber guide element 1.
  • the free fiber ends 28 are increasingly pressed outwards, so that it is ensured that the fibers despite the outer guide portions 17 and the protrusions 10 reach the area of the air flow generated by the air nozzles 19 and can be wound around the fiber core.
  • both the guide sections 17, which are preferably arranged uniformly and at equal distances around the middle guide element 26 or the center axis 1 of the fiber guide element 1, and the middle guide element 26 can be placed outside the yarn formation element 21, it is likewise conceivable that Either the guide portions 17 or the middle guide member 26 extend into the discharge channel 23 of the Garn Strukturselements 21 (not shown).
  • middle guide member 26 need not necessarily be provided with a teardrop or spherical front portion, as shown in FIG. Rather, it could also be designed as, preferably tapered, guide pin (comparable to the guide sections 17 shown). Also, the guide portions 17 need not necessarily be present, so that a design is conceivable in which in addition to the bulges 10 according to the invention exclusively a central guide element 26 is present (see Figure 14).
  • the shape and orientation of the guide portions 17 is not limited to an embodiment in principle. So it would be conceivable, for example, instead of z. B. in Figure 5 shown rod-shaped guide portions 7 of the inner surface 9 of the fiber guide element 1 in the direction of the central axis 11 projecting guide plates, which would also prevent back-planting the rotation of the fiber strand 4 against the transport direction T.
  • the guide pins shown should preferably include an angle ⁇ with the center axis 11 of the fiber guide element 1 (which is only indicated in FIG. 15 for reasons of clarity), the magnitude of which is between 10 ° and 50 °, preferably one Value between 20 ° and 40 °, particularly preferably a value between 25 ° and 35 ° occupies.
  • the end of the middle guide element 26 facing the yarn formation element 21 in FIGS. 14 and 16 is located in a section running parallel to the center axis 11 of the fiber guide element 1 between the respective end regions of the guide sections 17. In this way, it is ensured that the fiber structure 4 is at least partially in contact with the guide sections 17 and the middle guide element 26 at the same time.
  • the middle guide element 26 should extend at least in its inwardly directed region on the central axis 11 of the fiber guide element 1, which may be arranged again co-linear with the central axis 11 of the inlet opening 8.
  • the fiber structure 4 thus hits the central guide element 26 centrally and is deflected laterally, since it has to pass through the middle guide element 26.
  • an insert eg sleeve-shaped
  • This insert would finally be mounted together with the fiber guide element 1 in the region of the inlet opening 8 of the spinneret 2, so that the fiber guide channel 24 would be formed by two components (of course, the guide portions 17 and / or the middle guide member 26 could also be fixed directly to the vortex chamber wall 20 be so that the fiber guide element 1 would have only those bulges 10).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un élément de guidage de fibres (1), destiné à une filière (2) d'une machine à filer à jet d'air servant à fabriquer un fil (3) à partir d'un ensemble de fibres (4), qui possède un corps de base (5) doté d'une face extérieure (6) qui sert à l'installation sur une contre-face (7) d'une filière (2) du poste de filage pour pouvoir fixer l'élément de guidage de fibres (1) au niveau d'un orifice d'entrée (8) de la filière (2) et l'élément de guidage de fibres (1) possède une face intérieure (9) qui peut être amenée au contact de l'ensemble de fibres (4) pendant le fonctionnement de la filière (2) et qui sert au guidage. Selon l'invention, la face intérieure (9) comprend, dans une section de l'élément de guidage de fibres (1) qui s'étend perpendiculairement à un axe central (11) de l'élément de guidage de fibres (1), plusieurs bombements (10), de préférence radiaux, orientés vers l'intérieur, et au moins une partie des bombements (10) possède au moins dans une zone frontale (33) orientée vers l'axe central (11) un contour qui diminue vers l'intérieur. L'invention concerne en outre un poste de filage d'une machine à filer à jet d'air qui comporte un élément de guidage de fibres correspondant.
EP14792855.0A 2013-09-30 2014-09-01 Poste de filage de machine à filer à jet d'air équipé avec un élément de guidage de fibres Active EP3052683B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01674/13A CH708620A1 (de) 2013-09-30 2013-09-30 Faserführungselement für eine Spinndüse einer Luftspinnmaschine sowie damit ausgestattete Spinnstelle.
PCT/IB2014/001661 WO2015044728A1 (fr) 2013-09-30 2014-09-01 Élément de guidage de fibres pour filière de machine à filer à jet d'air et poste de filage ainsi équipé

Publications (2)

Publication Number Publication Date
EP3052683A1 true EP3052683A1 (fr) 2016-08-10
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CN (1) CN105765119B (fr)
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DE102019100306A1 (de) * 2019-01-08 2020-07-09 Maschinenfabrik Rieter Ag Faserführungselement für eine Spinndüse sowie damit ausgestattete Spinndüse
DE102020108257A1 (de) * 2020-03-25 2021-09-30 Saurer Spinning Solutions Gmbh & Co. Kg Vorrichtung zur Faservereinzelung und Spinneinrichtung umfassend eine solche Vorrichtung

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US4437302A (en) * 1982-01-20 1984-03-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho False twisting air nozzle
JPS60378U (ja) * 1983-06-15 1985-01-05 ユニチカ株式会社 バル−ン制御管
DE3541219A1 (de) * 1985-11-21 1987-05-27 Schubert & Salzer Maschinen Verfahren und vorrichtung zum verspinnen von fasern
CH683696A5 (de) 1989-11-14 1994-04-29 Murata Machinery Ltd Vorrichtung und Verfahren zum Erzeugen gesponnener Garne durch Verzwirnen.
DE4003950C1 (fr) * 1990-02-09 1991-06-20 Gevetex Textilglas Gmbh, 5120 Herzogenrath, De
JPH04667U (fr) * 1990-04-18 1992-01-07
JPH04131660U (ja) * 1991-05-23 1992-12-03 村田機械株式会社 紡績用ノズル
JPH0673618A (ja) * 1992-08-24 1994-03-15 Murata Mach Ltd 紡績装置
EP0990719B1 (fr) * 1998-10-02 2003-05-28 W. SCHLAFHORST AG & CO. Métier à filer
DE10261011A1 (de) * 2002-12-17 2004-07-08 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens
JP5162975B2 (ja) * 2007-06-21 2013-03-13 村田機械株式会社 紡績装置
JP2012097391A (ja) * 2010-11-05 2012-05-24 Murata Mach Ltd 紡績機
DE102011054302A1 (de) * 2011-10-07 2013-04-11 Maschinenfabrik Rieter Ag Garnbildungselement für eine Spinnstelle einer Luftspinnmaschine mit einem Drallstoppelement

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CN105765119B (zh) 2019-05-17
CH708620A1 (de) 2015-03-31
WO2015044728A1 (fr) 2015-04-02
CN105765119A (zh) 2016-07-13
EP3052683B1 (fr) 2019-12-18

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