EP3954814A1 - Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn - Google Patents

Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn Download PDF

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Publication number
EP3954814A1
EP3954814A1 EP20190350.7A EP20190350A EP3954814A1 EP 3954814 A1 EP3954814 A1 EP 3954814A1 EP 20190350 A EP20190350 A EP 20190350A EP 3954814 A1 EP3954814 A1 EP 3954814A1
Authority
EP
European Patent Office
Prior art keywords
chamber
air
channel
yarn
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20190350.7A
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German (de)
English (en)
French (fr)
Inventor
Patrick BUCHMÜLLER
Nicola Chiusolo
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.)
Heberlein AG
Original Assignee
Heberlein 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 Heberlein AG filed Critical Heberlein AG
Priority to EP20190350.7A priority Critical patent/EP3954814A1/de
Priority to TW110129337A priority patent/TW202212239A/zh
Priority to KR1020237007302A priority patent/KR20230048354A/ko
Priority to PCT/EP2021/072228 priority patent/WO2022034051A1/de
Priority to JP2023509550A priority patent/JP2023537099A/ja
Priority to CN202180055897.6A priority patent/CN117337345A/zh
Priority to US18/041,010 priority patent/US20230287606A1/en
Priority to EP21763036.7A priority patent/EP4193011A1/de
Publication of EP3954814A1 publication Critical patent/EP3954814A1/de
Withdrawn legal-status Critical Current

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    • 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 an intermingling jet for the production of knotted yarns, intermingled yarns, DTY or plain yarns with knots, and a method for intermingling yarns, having the features of the preamble of the independent patent claims.
  • Nozzle devices are commonly used for directing, accelerating, and precisely applying fluids.
  • fluids mean both gases and liquids.
  • Jet devices are used in textile machines, among other things, to connect, structure or treat yarns. The shape of the chamber in which the yarn treatment is carried out is decisive for achieving the desired result and the amount of fluid required for this.
  • the treatment chamber usually includes an air swirl chamber into which the fluid flow is introduced and swirled.
  • an air swirl chamber into which the fluid flow is introduced and swirled.
  • high speeds are required. This is achieved by injecting high pressure air into the chamber.
  • Interlacing nozzles are used to treat all types of threads, yarns, cables or similar materials. These can consist of artificial fibers (plastics such as PE, PP, etc.). However, they can also consist of natural fibers (cotton, wool, raffia, etc.) or mixed fibres. The term “yarn” is used herein for all of these types of materials.
  • Interlacing jets are essentially used to interlace yarns made from man-made fibers. Swirling has several advantages. In this way package build, unwinding properties, process running properties or running properties in further processing are improved. Filament breaks are prevented. Filaments or fluff that have been pushed on can be tied in. In addition, the size application can be reduced or weaving without sizing can be made possible. Twisting/twisting can be substituted. Intermingling also makes it possible to combine different yarns with different properties or to create fancy yarns.
  • a nozzle device which comprises a splicing chamber with two lateral chamber areas. With this jet, the yarns do not move. It is not suitable for turbulence.
  • a nozzle device is to be provided which has a high level of efficiency and ensures reliable yarn treatment.
  • the invention should allow a desired knot strength and/or knot number of a yarn to be achieved with the lowest possible air pressure and air quantity and correspondingly low energy requirements.
  • the intermingling nozzle according to the invention comprises a yarn channel with an air twist chamber.
  • the air swirl chamber has an injection opening for introducing air into the air swirl chamber.
  • a channel axis extends in a yarn feed direction.
  • the yarn channel has a channel width transverse to the channel axis.
  • the air twist chamber has a chamber length in the thread guiding direction and a chamber extent transverse to this length. The chamber length is at least 180% of the chamber extent, preferably at least 200%.
  • the chamber length, the shape or proportions of the cross section of an injection opening, the chamber extent or the angle of chamber walls in relation to the wall of the yarn channel can be adjusted individually or in combination with one another in order to set a desired number of knots and/or quality.
  • a chamber length (related to the chamber extent) of between 210% and 230%, in particular about 220%, leads to the formation of fewer but more stable nodes.
  • a length of between 320% and 340%, in particular about 330% leads to many but less stable knots.
  • the chamber length is preferably at least 1.5mm longer than the chamber extension.
  • a further aspect of the invention therefore relates to a method for adjusting the number and/or quality of nodes, in which the shape and dimensions of the chamber are specifically selected to define the number and/or quality of nodes.
  • a chamber length is selected based on the chamber extent, using a shorter length to form fewer but more stable knots and a greater length is chosen to form more but less stable knots.
  • the lengths are more than 180% of the extent of the chamber and are preferably selected in each case as described above.
  • the air flow vectors (flow direction and strength of the air flow) within the air swirl chamber are decisive for the number and strength of nodes in conjunction with the transmission.
  • tradition states how much more length of yarn is fed into the nozzle than comes out of the nozzle. This excess is used to form knots.
  • Different components of the air flow vectors lead to different effects when treating yarn in intermingling jets: Components of the air flow vectors, which are directed in the direction of the thread feed or in the opposite direction to this, influence the thread feed and thread tension. Components of the air flow vectors transverse to these directions entangle the yarn and are thus essential for knot formation.
  • the air flow in the air twist chamber should be directed in such a way that the air flow has more transverse components than components in the thread guiding direction or in the opposite direction to the thread guiding direction.
  • the air flow vectors should have more components in the direction of yarn feed in order to ensure sufficient yarn transport.
  • the air flow vectors can be influenced by the geometry of the air twist chamber, the yarn channel and the injection opening.
  • a ratio of a chamber length of the air twist chamber to a chamber extension transverse to the chamber length of at least 1.8 directs the air flow within the air twist chamber over a longer area transverse to the yarn feed direction, so that lower air pressures and air quantities are necessary to achieve sufficient turbulence of the yarn.
  • the air flow introduced through the injection opening is guided through such an intermingling nozzle in such a way that the amount of fluid introduced can be reduced by up to 20% and the yarn still has the required number of knots and knot strength after the treatment.
  • the chamber length can be 180%, 200%, 218%, 228%, 330% of the chamber extent, preferably with a chamber extent of 1.5 mm, 2 mm, 3 mm or 3.5 mm. Concrete values can be e.g. 1.75 mm, 2.67 mm, 2.94 mm or 3.08 mm. be.
  • the chamber length is preferably at least 35% of the total nozzle length. The total nozzle length consists of the length of the yarn channel and the length of the chamber.
  • the chamber extent is understood here to mean the maximum extent of the air twist chamber in a transverse direction transverse to the thread guiding direction and to an air twist chamber depth.
  • the air swirl chamber can comprise two chamber areas directly following one another, with the chamber length being composed of the lengths of the chamber areas.
  • the air swirl chamber can include only one chamber area, the chamber walls of which are rounded.
  • the radius of curvature of the chamber walls can increase in the thread guiding direction up to the center of the air twist chamber and then decrease again.
  • the air twist chamber can also comprise two air twist chamber areas, with the walls being rounded in the thread guiding direction and the rounding of the first area in the thread guiding direction having a larger radius than that of the second area.
  • the walls of the areas preferably merge into one another without a kink.
  • the air twist chamber areas may have a cross-section in a plane along the channel axis of the yarn channel and in the transverse direction that is substantially teardrop-shaped, such that the chamber areas have round sections and straight sections.
  • the straight sections are arranged so as to run towards one another in the thread guiding direction or in the opposite direction.
  • the injection opening is preferably arranged in the swirling nozzle in such a way that the air flow enters the air swirl chamber at an angle greater than or less than 90° to the channel axis.
  • the injection opening is preferably arranged in such a way that the air flow enters the air swirl chamber in an area with a smaller extent than the chamber extent.
  • the chamber extension is preferably 15-45% of the channel width, preferably 15% and 35%, and the chamber extension is preferably at most 5 mm, preferably at most 3 mm wider than the channel width.
  • the chamber expansion is less large. Typically it is close to 15% based on the channel width.
  • a larger chamber expansion is selected, for example 35% based on the channel width.
  • the extent of the chamber can preferably be between 1.75 mm and 17 mm.
  • the chamber length is preferably at most 350% of the channel width and is in particular at most 30 mm, preferably at most 20 mm, greater than the channel width.
  • the air twist chamber preferably has chamber walls which have at least one wall segment that is rounded in the thread guiding direction, in particular with a radius of between 0.3 mm and 6 mm, preferably between 0.5 mm and 2 mm.
  • the chamber is preferably convexly rounded.
  • the chamber walls additionally include straight wall segments.
  • the chamber wall widens, starting from a channel wall, viewed in the direction of yarn feed.
  • the chamber wall can widen at an angle of at most 5° in relation to the thread guiding direction and the channel wall.
  • a first chamber area is preferably arranged first in the thread guiding direction and a second chamber area immediately follows the first chamber area in the thread guiding direction.
  • the chamber has a constriction, so that the chamber expansion in the first and second chamber area is greater than the chamber expansion at the transition.
  • the air swirl chamber can also include more than two chamber areas, which are each separated from one another by constrictions.
  • the air swirl chamber can include other structures for directing the air flow, such as surface structures, ribs, edges, narrowings or widenings.
  • the air swirl chamber may include coatings to swirl air.
  • the first chamber area can have a first chamber depth across the chamber length and the chamber extent and the second chamber area can have a second chamber depth across the chamber length and the chamber extent, wherein the chamber depths can be different.
  • the intermingling nozzle has a yarn channel with an air twist chamber.
  • the air swirl chamber has an injection port for introducing air into the air swirl chamber.
  • a channel axis extends in a yarn feed direction.
  • the injection opening has a cross section with at least one round section and at least one air guide section, the air guide section being straight or having a radius of curvature that is at least 10 times greater than the radius of curvature of the round section.
  • the cross-sectional geometry of the injection opening has a direct influence on the quality of the turbulence and on the vectors of the flow direction.
  • the air line section or sections is/are preferably not arranged parallel to the channel axis.
  • the air currents in the transverse direction are decisive for the intermingling of the yarn. If the air is directed more in the transverse direction, the yarn is swirled more and more and stronger knots are formed.
  • the blow-in opening preferably comprises exactly four straight air line sections in cross section, which are arranged essentially in the shape of a diamond and are preferably connected to one another with rounded corners, which form the round sections.
  • a first line of symmetry of the diamond shape is preferably arranged parallel to and preferably coincident with the axis of the channel, so that a first corner of the diamond shape points in the direction of the thread feed and a second corner points in the opposite direction to the thread feed direction, and a third and a fourth corner in a common plane perpendicular to the first Line of symmetry are arranged pioneering.
  • the cross-sectional shape can alternatively be triangular or polygonal, with the corners being rounded off.
  • the shape preferably comprises an even number of rounded corners, the cross-sectional shape being arranged in the air twist chamber in such a way that the corners lead to it both in the thread guiding direction and in the opposite direction.
  • the cross-sectional shape can also be trapezoidal or kite-shaped.
  • a diamond-shaped blowing opening results in fewer but more stable knots.
  • a kite-shaped blowing hole results in more but less stable knots.
  • the blow-in opening preferably has a cross section with an opening length in the thread guiding direction and an opening width transverse to the opening length.
  • the opening length and the opening width are different, in particular a ratio between the opening length and the opening width being between 1.0 and 1.5. A smaller ratio, typically 1.0, is used to create many nodes.
  • the rhombus thus includes angles between the sides which are greater or less than 90°.
  • the curves of the blunt corners comprise a different radius than the curves of the acute angle corners.
  • the injection opening can also be at least approximately oval in cross section.
  • the targeted selection of opening width and length allows the air volume to be directed in a specific direction: If the opening length is greater than the opening width, the angle at which the air flows into the chamber with the greatest speed changes. This allows the air flow to be directed.
  • the length of the opening is less than the width of the opening, with preferably the first and second corners of the diamond shape being rounded with a larger radius than the third and fourth corners.
  • the opening width may be less than the opening length, preferably with the third and fourth corners of the diamond shape being rounded to a greater radius than the first and second corners.
  • this targeted choice of opening allows a precise alignment of air flow and air volume and thus the air speed.
  • a further aspect of the invention relates to an intermingling nozzle with a yarn channel with an air twist chamber, which has an injection opening for introducing air into the air twist chamber.
  • the entanglement nozzle is in particular an entanglement nozzle as described above.
  • a channel axis extends in a yarn feed direction.
  • the yarn channel has a channel width transverse to the channel axis.
  • the air twist chamber has a chamber length in the yarn feed direction and a chamber extent transverse to this length.
  • the air twist chamber and/or the injection opening are designed and arranged in the yarn channel in such a way that air introduced through the injection opening is guided in a vector which has more transverse components transverse to the channel axis than axial components along the channel axis within the air twist chamber and more axial components outside the air twist chamber has as transverse components.
  • the air flow which runs transversely to the axis of the channel, leads to stronger intermingling of the yarn and is therefore decisive for the formation of knots in the yarn.
  • the air flow in the axial direction conveys the yarn in the yarn feed direction and thus leads to stronger yarn tension. Because the air flow in the air twist chamber is guided more transversely than axially, more knots are created in the yarn. If the air outside of the air swirl chamber is also more in guided in the axial direction, enough yarn tension is maintained to ensure a stable process. If the yarn tension is too low, the yarn flutters so much in front of the nozzle that it can tear.
  • transverse components always include both radial and tangential components, since the radial components are decisive for the number of knots and the tangential components for the yarn tension.
  • the air swirl chamber can be designed in such a way that the air is swirled over an area of at least 40% of the total length of the nozzle.
  • the total nozzle length includes the length of the yarn channel and the chamber length of the air twist chamber.
  • the transverse components include more radial components than tangential components.
  • the transverse components have more tangential components than radial components.
  • the objects are solved by a method for interlacing yarn.
  • the yarn is guided along a yarn channel axis of a yarn channel of an entanglement jet.
  • Air is introduced into an air swirl chamber and vectored within the air swirl chamber.
  • the vector inside the air swirl chamber includes more transverse components transverse to the duct axis than axial components along the duct axis, and outside the air swirl chamber more axial components than transverse components.
  • FIG 1 shows a top view of a first embodiment of a swirl nozzle 100 according to the invention.
  • the shape, size and geometry of the nozzle is designed to produce few but stable knots.
  • the intermingling nozzle 100 comprises a nozzle plate 10 with a yarn channel 1 with two channel sections 1a and 1b and an air twist chamber 2 between the sections 1a and 1b.
  • a thread guiding direction F leads along central axes Ma and Mb of the channel sections 1a and 1b.
  • the air swirl chamber 2 comprises two chamber areas 2a and 2b. At the transition between the first chamber area 2a and the second chamber area 2b there is an injection opening 4 through which an air flow is injected into the air swirl chamber 2 .
  • An inlet section 3a is arranged at the inlet of the first channel section 1a and an outlet section 3b is arranged at the outlet of the second channel section 1b.
  • the channel section 1a is shorter than the channel section 1b. Both channel sections have an extent 21 in the direction of the plane of the drawing of 1.7 mm.
  • the nozzle plate 10 has a substantially mirror-symmetrical structure with respect to a plane through the central axes Ma and Mb and perpendicular to a plate surface.
  • the nozzle plate 10 comprises a base 13.
  • the base 13 has an outline which essentially comprises two straight sides 15a and 15b, arranged opposite, and two rounded sides 16a and 16b, also arranged opposite.
  • the straight sides each have a substantially trapezoidal indentation 14a and 14b, the axes of symmetry of which lie on the central axes Ma and Mb.
  • a bulge 12a and 12b for attaching the nozzle to the holder is arranged on each of the rounded sides.
  • Bulges 12a and 12b are of substantially the same radius as rounded sides 16a and 16b. However, the bulges 12a and 12b are shorter than these sides.
  • the nozzle plate 10 further comprises two circular openings 11a and 11b passing through the nozzle plate 10 .
  • the air twist chamber 2 has a chamber length 29 of 4.69 mm in the yarn feed direction F and a chamber extension 28 of 2.32 mm. Below the chamber extension 28 is the greatest extension of the Air swirl chamber 2 to be understood transversely to the chamber length 29 in the plane of the plate. This chamber extension 28 and this chamber length 29 result in a ratio of length and extension of 2.02.
  • the nozzle plate 10 is connected to a cover plate so that the channel sections 1a and 1b and the air swirl chamber 2 are closed.
  • One or more yarns are introduced into and passed through the air twist chamber 2 while compressed air is applied to the yarn or yarns through the injection port 4 . This creates knots in the yarn or yarns
  • the air swirl chamber 2 is longer relative to the extension, the air is guided more in a transverse direction than with shorter chambers and, in addition, the air is guided over a longer area in this transverse direction.
  • Air flow vector components perpendicular to the thread direction are responsible for the turbulence and thus for the number and strength of knots. If the yarn is now swirled more and over a longer area, more and firmer knots are formed.
  • FIG. 2 shows the detail D figure 1 .
  • the treatment chamber 2 with the two chamber areas 2a and 2b can be seen.
  • the chamber area 2a has a first chamber width 22 transverse to the central axis Ma and the second chamber area 2b has a second chamber width 23 transverse to the central axis Mb.
  • a constriction 5 is arranged between the chamber regions 2a and 2b. This means that the chamber width 22 of the first chamber area 2a and the chamber width 23 of the second chamber area 2b are larger than the chamber width 51 between the chamber areas 2a and 2b.
  • the chamber width 23 of the second chamber area 2b is equal to or larger (preferably about 5%) than the chamber width 22 of the first chamber area 2a.
  • the chamber length here is about 200% of the chamber extension.
  • the chamber areas 2a and 2b have a teardrop-shaped cross section in the plane of the plate with rounded sections and straight sections running towards one another in the direction of thread feed.
  • This constriction 5 leads to the air flow being separated so that two areas are created in which the air and thus the yarn are swirled differently.
  • the first chamber area 2a has a first area length 24 parallel to the center axes Ma and Mb, which is equal to or greater than the second area length 25 parallel to the center axes Ma and Mb of the second chamber area 2b.
  • the chamber length 29 of the air swirl chamber 2 consists of the first area length 24 and the second area length 25 and is 5.1 mm.
  • the chamber walls of the chamber areas 2a and 2b each lead away at an angle from the walls of the yarn channel.
  • the chamber walls of the first chamber area 2a have an angle P of about 18° to 20° (specifically 19°) to the walls of the yarn channel, the chamber walls of the second chamber area 2b also have an angle S of 18° to 20°.
  • a smaller angle uses a larger angle to create fewer but more stable nodes.
  • the region lengths 24 and 25 are determined by the chamber extent (ie the width of the air swirl chamber) and the angle. The widths of the air swirl chambers and/or the angles can be the same or different.
  • figure 3 shows the injection opening 4 from the embodiment figure 1 .
  • the chamber areas 2a and 2b of the air swirl chamber 2 (cf. figure 1 ) are arranged directly one after the other, with the air swirl chamber 2 (cf. figure 1 ) at the transition between the chamber areas 2a and 2b has a constriction 5 in width.
  • the injection opening 4 is arranged at the transition between the chamber areas 2a and 2b. A larger part of the cross section of the injection opening 4 leads into the first chamber area 2a.
  • the injection opening 4 has a cross-sectional shape which is essentially a parallelogram with rounded corners 41-44.
  • the rounded corners 41-44 are rounded sections.
  • the sides of the parallelogram shape are air guide sections 45 which serve to guide the air in a specific direction.
  • the first corner 41 points in the thread guiding direction F, the second corner 42 in the opposite direction to the yarn guiding device, so that the line of symmetry 40 of the parallelogram shape is arranged along the central axes Ma and Mb.
  • the first corner 41 and the second corner 42 are both rounded with a radius of 0.2 mm - 2.5 mm.
  • the third corner 43 and the fourth corner 44 both lie in a plane perpendicular to the central axes Ma and Mb and are both rounded with a radius of 0.3 mm - 3 mm.
  • the angle between the straight sections is about 50° for the acute angle and about 130° for the obtuse angle.
  • the injection opening has a width of typically 1 mm-10 mm, preferably about 1.32 mm and a length of 0.8 mm-7 mm, preferably about 0.99 mm and thus a width-to-length ratio of about 1.33:1.
  • the blow-in opening has a parallelogram or diamond shape, as shown, the air is increasingly guided in a direction transverse to the thread guiding direction, with the transverse direction having components in both the tangential and radial directions.
  • the corners 41 and 42 which lie on the line of symmetry in the thread guiding direction, are blunt and the other corners 43 and 44 are pointed.
  • the angle of the corners has an impact on the orientation of the airflow, so depending on whether you want the flow to have more tangential or radial components, the angle can be adjusted.
  • figure 4 12 shows a plan view of a second embodiment of an interlacing nozzle 100 according to the invention.
  • the interlacing nozzle 100 of this embodiment has essentially the same nozzle plate 110 as the nozzle plate of the first embodiment. Therefore, only the differences from the first embodiment will be discussed below.
  • the air twist chamber 102 of this embodiment has two chamber areas, with the chamber walls 127a of the first in the thread guiding direction F being arranged rounded in the thread guiding direction with a radius which is larger than the radius of the rounding in the thread guiding direction F of the wall sections 127b of the second chamber area.
  • the radius of curvature of the first wall section 127a can vary. Typically it is about 25mm.
  • the radius of curvature of the second wall section 127b can also vary and can be around 15 mm.
  • the chamber length 129 of the air swirl chamber 102 is 6.85 mm in the exemplary embodiment shown here, and the chamber extent 128 is 3 mm.
  • the extension 121 of the yarn channel 101 is 2.4 mm.
  • the injection port 104 comprises substantially the same cross-sectional shape of a parallelogram as in FIG 3 shown with rounded corners.
  • the injection port 104 is positioned such that the airflow enters the air swirl chamber 102 at an angle of less than 90°.
  • Figure 5a Figure 1 shows a nozzle with a circular cross-section injection port used in prior art swirl nozzles.
  • a simulation was carried out to illustrate the influence of the cross-sectional shape on the air flow, the simulation being shown in Figure 5b - 5d (and also 6b - 6d) was carried out using an interlacing jet with a yarn channel without an air twist chamber.
  • Such an injection opening which is known per se, can also be used in an air swirl chamber 2 of a swirling nozzle according to the invention figure 1 or 4 to be ordered.
  • Figure 5b shows a scale of in the Figures 5c and 5d shown flow velocities.
  • Figure 5c shows the velocities of the air currents in the plan view of the nozzle Figure 5a . It can be seen that the flow of air with the highest speed 70 in area 150 mostly flows in the direction of yarn feed F or in the opposite direction. Areas 151 with a relatively high speed 71 are mainly located on the walls of the yarn channel and also lead in the direction of yarn feed F or in the opposite direction. Between the walls of the yarn channel in the area 151, however, there are mainly relatively low speed regions in the middle 72 or low speed 73, which lead in the thread direction F or the opposite direction.
  • FIG. 5 shows a representation of the flow velocities of the nozzle from FIG. 5a in side view.
  • the air flow is directed mainly in the region 152 of the injection port in the center of the yarn duct, that is, there is a high velocity region 152 70 in the center of the yarn duct in the area of the injection port with transverse components.
  • region 153 there are isolated areas of flow vectors with high speed also in the transverse direction in the middle of the yarn channel.
  • the areas with high speed also increasingly lead along the wall opposite the entrance opening in the thread guiding direction, resp. in opposite direction.
  • Figure 6a shows a diamond cross-section injection port with no air swirl chamber to show the influence of nozzle port geometry on airflow.
  • Figure 6b shows a scale of flow velocities.
  • Figure 6c shows a representation of the flow velocities of the nozzle in plan view. This illustration shows that an injection opening with a diamond-shaped cross-section has a larger area 160 with a high flow velocity 70 than in FIG Figure 5c and that the flow deviates more from the thread guiding direction F or its opposite direction. In addition, the Figure 6c that a nozzle with an injection opening with a diamond-shaped cross-section has more areas 161 with a relatively high flow velocity 71, which is also guided more in the middle between the walls of the yarn channel than in FIG Figure 5c .
  • Figure 6d shows a plot of nozzle flow velocities Figure 6a in side view.
  • Figure 6d 12 also shows that a nozzle with a diamond-shaped injection orifice has a larger area 163 with a relatively high velocity 71, which is also directed more centrally between the duct walls than in the nozzle shown in FIG Figure 5d .
  • Figure 7a shows a nozzle from the prior art with a circular injection opening and an air swirl chamber with a chamber length which is smaller than the chamber extent.
  • Figure 7b shows a scale of flow velocities.
  • Figure 7c Figure 12 shows a plot of nozzle flow velocities Figure 7a in top view. It can be seen that the flow has few high velocity regions 170 where the flows are transverse to the yarn feed direction. There are areas 171 outside the chamber in which the flow has a relatively high velocity 71 and runs primarily in the yarn feed direction or in the opposite direction.
  • Figure 7d Figure 12 shows a plot of nozzle flow velocities Figure 7a in side view.
  • the flow here is mainly guided in the transverse direction in the region 172 of the injection opening.
  • the flow In a small area 173 outside the chamber, the flow has a high speed and leads in the direction of the yarn feed, resp. opposite direction.
  • Figure 8a shows a nozzle according to the invention with an air swirl chamber which has a chamber length which is 2.5 times greater than the chamber extent.
  • Figure 8b shows a scale of flow velocities.
  • Figure 8c Figure 12 shows a plot of nozzle flow velocities Figure 8a in top view. It can be seen that the flow has large areas in the chamber, which have high-velocity flows 71, which lead in the transverse direction to the thread-guiding direction F, and in the middle of the areas 180 in the thread-guiding direction, high-velocity flows 71, which run in the thread-guiding direction F or run in the opposite direction.
  • Figure 8d Figure 12 shows a plot of nozzle flow velocities Figure 8a in side view. It can be seen that in larger areas 182, 183 the flow is directed more concentrated in the middle between the walls of the yarn channel, i.e. in the transverse direction to the yarn guiding direction F than in Figure 7d will be shown. The flows in area 183 near the injection opening have a high speed 71, and in area 182 a slightly lower speed 73. There is therefore less air flow in the yarn guiding direction F.
  • Figure 12 shows a juxtaposition of the representation of airflows from different nozzles in side view.
  • Diagram 80 shows the air flow of a nozzle without an air swirl chamber, as in Figure 5a .
  • Diagram 81 shows the air flow of a nozzle with an air swirl chamber with a chamber length that is smaller than the chamber extension, as in Figure 7a .
  • the representation 82 shows the air flow of a nozzle according to the invention with an air swirl chamber with a chamber length which is 1.6 times as large as the chamber extent.
  • the representation 83 shows the air flow of a nozzle according to the invention with an air swirl chamber with a chamber length which is more than twice as large as the chamber extent.
  • the airflow is distributed such that relatively few airflows are concentrated in the center.
  • Lines 84 show that as the length of the chamber increases, there is increased directionality of flow toward the center.
  • FIG. 1 shows a simplified cross section through a nozzle plate 10 in the thread guiding direction.
  • the yarn channel 1 has the air twist chamber 2 in the middle, into which the injection opening 4 opens at an angle in the direction F of the yarn feed.
  • Figures 11a and 11b show an example of an intermingled DTY yarn ( Figure 11a ) and an intermingled plain yarn ( Figure 11b ).
  • the Figures 12 and 13 show a further embodiment of a nozzle according to the invention in a representation analogous to the representation of the first embodiment in FIGS Figures 1 and 2 .
  • the same reference symbols designate the same elements as in FIGS Figures 1 and 2 and will not be described again.
  • the nozzle according to Figures 12 and 13 designed to create more and therefore less stable knots.
  • the channel sections 1a, 1b have an extent 21 in the direction of the plane of the drawing of 1.7 mm.
  • the air twist chamber 2 has a chamber length 29 of 6.74 mm in the yarn feed direction F and a chamber extension 28 of 2.0 mm. This chamber extension 28 and this chamber length 29 result in a ratio of length and extension of approximately 3.37.
  • the chamber walls of the chamber regions 2a and 2b each lead away from the walls of the yarn channel at an angle of approximately 6°. This is for creating many nodes
  • figure 13 shows the injection opening 4 from the embodiment figure 12 .
  • a smaller part of the cross section of the injection opening 4 leads into the first chamber area 2a.
  • the blow-in opening 4 has a kite-shaped cross-section with rounded corners and a rounded boundary in the chamber area 2a.
  • the injection opening 4 has a width B of about 1.13 mm and a length L of about 1.1 mm and thus a width to length ratio of about 1:1.
  • the kite shape is constructed asymmetrically: Its length in chamber area 2a is 0.5 mm and in chamber area 2b is 0.6 mm.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP20190350.7A 2020-08-10 2020-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn Withdrawn EP3954814A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP20190350.7A EP3954814A1 (de) 2020-08-10 2020-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn
TW110129337A TW202212239A (zh) 2020-08-10 2021-08-09 用於生產具紮結之紗線之漩渦噴嘴及用於交織紗線之方法
KR1020237007302A KR20230048354A (ko) 2020-08-10 2021-08-10 매듭이 있는 실의 생산을 위한 인터레이싱 노즐 및 실을 인터레이싱하기 위한 방법
PCT/EP2021/072228 WO2022034051A1 (de) 2020-08-10 2021-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn
JP2023509550A JP2023537099A (ja) 2020-08-10 2021-08-10 結び目を有するヤーンの製造のための交絡ノズルおよびヤーンを交絡させるための方法
CN202180055897.6A CN117337345A (zh) 2020-08-10 2021-08-10 用于生产带结子的纱线的交络喷嘴和交络纱线的方法
US18/041,010 US20230287606A1 (en) 2020-08-10 2021-08-10 Interlacing nozzle for the production of yarns with knots and method for interlacing yarns
EP21763036.7A EP4193011A1 (de) 2020-08-10 2021-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20190350.7A EP3954814A1 (de) 2020-08-10 2020-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn

Publications (1)

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EP3954814A1 true EP3954814A1 (de) 2022-02-16

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EP20190350.7A Withdrawn EP3954814A1 (de) 2020-08-10 2020-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn
EP21763036.7A Pending EP4193011A1 (de) 2020-08-10 2021-08-10 Verwirbelungsdüse für die herstellung von garnen mit knoten und verfahren zum verwirbeln von garn

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Country Status (7)

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US (1) US20230287606A1 (zh)
EP (2) EP3954814A1 (zh)
JP (1) JP2023537099A (zh)
KR (1) KR20230048354A (zh)
CN (1) CN117337345A (zh)
TW (1) TW202212239A (zh)
WO (1) WO2022034051A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114717711B (zh) * 2022-05-11 2022-11-22 宜兴市阿芙勒尔陶瓷科技有限公司 一种加弹机网络喷嘴配件及配件用插接件

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809761A (en) 1994-06-23 1998-09-22 Pentwyn Splicers Limited Pneumatic yarn splicer
DE19947894C1 (de) * 1999-10-06 2001-03-29 Akzo Nobel Nv Vorrichtung zum Verwirbeln von Multifilamentgarnen
WO2006099763A1 (de) * 2005-03-20 2006-09-28 Oerlikon Heberlein Temco Wattwil Ag Verfahren und verwirbelungsdüse für die herstellung von knotengarn
DE102006009139A1 (de) * 2006-02-24 2007-08-30 Andreas Mack Garnbehandlungsvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644620A (en) * 1982-12-03 1987-02-24 Murata Kikai Kabushiki Kaisha Draw texturing and entanglement apparatus for yarn
US4729151A (en) * 1986-09-10 1988-03-08 Rhs Industries, Inc. Apparatus for entangling yarn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809761A (en) 1994-06-23 1998-09-22 Pentwyn Splicers Limited Pneumatic yarn splicer
DE19947894C1 (de) * 1999-10-06 2001-03-29 Akzo Nobel Nv Vorrichtung zum Verwirbeln von Multifilamentgarnen
WO2006099763A1 (de) * 2005-03-20 2006-09-28 Oerlikon Heberlein Temco Wattwil Ag Verfahren und verwirbelungsdüse für die herstellung von knotengarn
DE102006009139A1 (de) * 2006-02-24 2007-08-30 Andreas Mack Garnbehandlungsvorrichtung

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US20230287606A1 (en) 2023-09-14
WO2022034051A1 (de) 2022-02-17
EP4193011A1 (de) 2023-06-14
KR20230048354A (ko) 2023-04-11
JP2023537099A (ja) 2023-08-30
TW202212239A (zh) 2022-04-01
CN117337345A (zh) 2024-01-02

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