EP4127283A1 - Dispositif d'individualisation de fibres, et dispositif de filage comprenant un tel dispositif - Google Patents

Dispositif d'individualisation de fibres, et dispositif de filage comprenant un tel dispositif

Info

Publication number
EP4127283A1
EP4127283A1 EP21715794.0A EP21715794A EP4127283A1 EP 4127283 A1 EP4127283 A1 EP 4127283A1 EP 21715794 A EP21715794 A EP 21715794A EP 4127283 A1 EP4127283 A1 EP 4127283A1
Authority
EP
European Patent Office
Prior art keywords
channel
spinning
segment
passage width
channel segment
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.)
Pending
Application number
EP21715794.0A
Other languages
German (de)
English (en)
Inventor
Alexander Kistner
Simon Küppers
Pia SENDLER
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and Co KG
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 Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP4127283A1 publication Critical patent/EP4127283A1/fr
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/34—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using air-jet streams
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex

Definitions

  • Apparatus for separating fibers and spinning equipment comprising such a device
  • the present invention relates to a device for separating fibers from a supplied fiber sliver end and a spinning device comprising such a device and a method for spinning a thread by means of the spinning device.
  • the fiber separation is an essential preliminary stage for spinning a thread from separated fibers as in particular with open-end spinning processes.
  • Open-end spinning processes are distinguished from other spinning processes such as ring spinning, for example, in that a sliver consisting of parallelized fibers is broken up into individual fibers and these individual fibers are spun onto an open end of a spun thread.
  • Such an open-end spinning process is represented, for example, by the rotor spinning process.
  • a sliver end consisting of parallelized fibers is fed to a rotating opening roller, which detaches the individual fibers from the sliver end, takes them with it and feeds them to a fiber guide channel leading to a spinning rotor.
  • the individual fibers fed to the spinning rotor via the fiber guide channel slide along a fiber slide wall formed by the rotor cup of the spinning rotor into a rotor groove of the revolving spinning rotor, in which they are collected and doubled back to the desired yarn fineness and via which rotor groove the fiber collection is fed to a thread end for spinning a thread .
  • Such an open-end rotor spinning process is known, for example, from the document DE 10 2008 050 071 A1.
  • the open-end spinning process also includes the air-jet spinning process.
  • the air spinning process is based on an aerodynamic principle.
  • an air spinning nozzle unit is fed with a sliver that has been drawn in a defined manner. The distortion causes a reduction in the amount of fibers per unit length.
  • the air spinning nozzle unit comprises a fiber ribbon inlet with downstream injector nozzles for generating a vortex flow in a vortex chamber, in which a cone of a thread-forming element protrudes, with a thread guide channel passing through the cone through which the spun thread can be discharged from the air nozzle spinning unit.
  • the edge fibers of the supplied fiber ribbon consisting of parallelized fibers wrap around the cone without completely detaching from the fiber composite.
  • the core fibers are guided into the thread guide channel.
  • In the entrance area of the thread guide channel be the transport movement of the core fibers in the thread guide channel dragging the around the Edge fibers lying around a cone in such a way that these edge fibers wind around the parallelized core fibers and form so-called wrapping fibers, with which a thread is spun from the parallelized core fibers and the wrapping fibers.
  • Such an air-jet spinning process is known, for example, from the publication EP 1 584 715 A1. With the air-jet spinning process, however, complete separation of the sliver fed in is not achieved.
  • the process of fiber separation is of great importance with regard to the quality of a spun thread that can be achieved.
  • the fiber separation which can be achieved by means of an opening roller during the rotor spinning process requires an opening roller device that takes up a corresponding installation space and has a large number of complex components. The same applies to the air-jet nozzle unit in the air-jet process.
  • the present invention is intended to propose an alternative, more simplified device for fiber isolation, in particular with less complex components, as well as a spinning device and a method for spinning a thread using the device or the spinning device.
  • the device for separating fibers proposed by the present invention comprises a pressurizable hollow body section with an input channel segment for fluidly accompanying receiving and guiding a fed fiber sliver end in the direction of a downstream opening channel segment and the opening channel segment, which is located downstream of the input channel segment in the guiding direction of the fiber band end and communicates with the input channel segment is arranged and designed to dissolve the fluid-accompanied supplied Fa serbandendes in individual fibers.
  • the opening channel segment forms an annular channel communicating with the input channel segment, which has a channel entrance with a first passage width and a channel exit spaced therefrom in the guide direction of the fiber band with a second passage width, the passage width of the annular channel being in a section from the first passage width up to an average passage width of a channel center arranged between the channel inlet and the channel outlet tapers continuously or in sections in such a way that the average passage width is smaller than the first passage width.
  • the annular channel narrows from the channel entrance, in particular continuously or in steps, in the direction of the channel center.
  • the inventive geometry of the Auflensekanalseg element enables an, in particular increasing, increase in the flow rate of the fluid accompanying the end of the sliver in the direction of the middle of the channel, whereby the fiber sliver supplied in particular consisting of parallelized fibers can be dissolved into individual fibers. Furthermore, a stretching of the detached and dissolved individual fibers can advantageously be achieved if the annular channel between the channel entrance and the center of the channel has such an inner surface which is suitable for generating a laminar fluid flow.
  • the inner surface delimiting this annular channel section is designed without edges.
  • edge-free is to be understood as such a transition between two surface sections that turbulent flows can be avoided as far as possible. For example, this can be achieved with a preferably continuous reduction in the passage width of the annular channel between the channel entrance and the channel center, in particular from the channel entrance to the channel center.
  • the entrance channel segment has a conically tapering receiving section for the fiber sliver.
  • the sliver can be reliably fed and guided in the direction of the annular channel with an increasing flow velocity. This allows a slight pre-stretching of the sliver, sufficient to avoid potential fiber balls when feeding the sliver.
  • a length of the inlet channel segment extending in the guiding direction can be suitably selected depending on the fiber material to be broken up.
  • the inlet channel segment further preferably comprises a cylindrical passage section of the same diameter, which adjoins the conically tapering receiving section, for transferring the fiber sliver end to the channel inlet.
  • the increase in the flow rate can be tailored to the fiber material to be broken up as required.
  • at least the component of the device comprising the cylindrical passage section or, alternatively, the channel segment can form an exchangeable component in order to be able to ensure a variability of the device with regard to different fiber materials to be broken down.
  • An inside diameter of the channel inlet is preferably smaller than a corresponding inside diameter of the channel center.
  • the interior of the annular channel increases a cross-sectional conical shape with the cone tip in the area of the channel entrance and the cone base area in the area of the channel center. Such a conical shape favors the detachment of the individual fibers from the sliver when the end of the sliver enters the channel entrance.
  • a core element is stored in the passage of the opening channel segment to form the annular channel.
  • the core element consequently has an outer shape such that between an inside surface or inner wall of the Auflenseka nalsegments and the outside surface or outer wall of the core element, an annular gap forming the annular channel is formed with a passage width as described above, through which the sliver is formed or the dissolved individual fibers can be passed fluidbe sliding.
  • the core element is preferably mounted via at least one bearing element connecting the dissolving channel segment to the core element.
  • the bearing element consequently extends from the inner wall of the passage of the opening channel segment to the opposite outer wall of the core element.
  • the bearing element can be arranged at a desired location within the annular channel.
  • the bearing element preferably has an aerodynamic shape in order to reduce a disruptive influence on the fluid flow.
  • an aerodynamic shape is understood to mean a shape which is suitable for causing as little or no turbulence as possible in order to avoid a turbulent flow in the fluid flow.
  • the bearing element can be formed by a web that is as aerodynamic as possible.
  • the cross-section of the bearing element can form a teardrop shape running in the guide direction of the sliver or the individual fibers, which is further preferably designed and arranged such that the tip of the drop points against the guide direction of the sliver or the individual fibers and the spherical drop side points in the guide direction.
  • the drop-like configuration of the bearing element can alternatively or additionally run transversely to the guiding direction, that is to say between the core element and the dissolving channel segment. The tip of the drop is connected to the core element and the base of the drop is connected to the inner wall of the passage of the opening channel segment.
  • the drop-like design of the bearing element reduces the risk of the bearing element being wound or wrapped with fibers, which can lead to a clogging of the opening channel segment. More preferably, the extension length of the bearing element running in the guide direction is greater than the greatest fiber length of the individual fibers of the supplied fiber sliver to be loosened. This allows a further reduction in the risk of filament winding.
  • the bearing element can preferably have a front end which is white in the direction of the input channel segment and which is arranged in a passage area of the input channel segment, the bearing element extending along the guide direction into the opening channel segment.
  • the bearing element extends in the radial direction of the device both from the inner wall of the passage of the input channel segment and from the inner wall of the passage of the opening channel segment to the opposite outer wall of the core element.
  • the bearing element can extend with its front end from a plane comprising the channel entrance in the guide direction, the bearing element being arranged exclusively in the passage area of the opening channel segment.
  • the bearing element can preferably be designed as a ramp leading from an inner wall of the passage of the inlet channel segment and / or the opening channel segment to the outer surface of the core element for the sliver to be fed to the core element.
  • the ramp consequently connects the surface side of the inner wall of the inlet channel segment and / or the opening channel segment with the surface side of the outer wall of the core element along the guiding direction, whereby a defined guiding surface section can be provided for the sliver to be opened along the guiding direction. Furthermore, the core element can thereby be reliably stored at the same time.
  • the guide surface section formed by the ramp can preferably have a shape suitable for guiding the sliver.
  • the guide surface section can be designed flat, arched and / or step-like along the guide direction and / or transversely thereto.
  • the guide surface section can furthermore preferably have an angle of inclination along the guide direction which enables a smooth transition of the sliver guide between the ramp and the outer wall of the core element.
  • the pitch angle of the guide surface section is preferably greater, identical or smaller than the pitch angle of the outer wall section of the core element, which is formed starting from the front end of the core element facing the a channel segment in the direction of the central passage width.
  • the guide surface section is designed with different pitch angles, the pitch angle of at least two merging guide surface intermediate sections can be so different that one is larger or smaller than the other.
  • the angle of inclination of the guide surface intermediate sections designed such that their absolute difference from the angle of inclination of the outer wall section decrease in the guide direction, whereby a smooth transition can be made possible.
  • more than one bearing element is provided for more reliable storage of the core element.
  • two or three or more bearing elements can be seen, which can be arranged circumferentially around the core element, in particular in a circular or spiral-shaped arrangement direction, more preferably evenly distributed.
  • the core element can preferably be held in the opening channel segment by means of magnetic bearing forces.
  • This can be implemented, for example, by means of a controllable electromagnet, by means of which the core element reacting to the magnetic forces that can be generated can be defined or stored in a stable manner within the opening channel segment as required.
  • the core element has a material that reacts to magnetic forces, which is arranged in or on the core element and enables stable mounting of the core element within the opening channel segment under the action of magnetic forces.
  • the core element can be formed from such a material or have a corresponding material at suitable locations.
  • the core element is preferably mounted rotatably in its circumferential direction, in particular in the course of its purely magnetic position within the opening channel segment. This can be done, for example, by appropriately designing and regulating the electromagnet.
  • the core element held by means of the at least one bearing element can comprise a sub-element rotatable via mechanical drive means or via magnetically acting rotational forces, which is arranged on a side of the core element facing away from the channel entrance and which is held rotatably by the further sub-element of the core element, which is held by the at least one bearing element.
  • the mechanical drive means can be arranged in the further sub-element.
  • the sub-element is designed accordingly to interact with the acting magnetic rotary forces.
  • the device can be designed in one or more parts, with at least one part of the device being more preferred Way is designed by a machining and / or an additive manufacturing process.
  • the additive manufacturing process is particularly suitable for avoiding separation and connection points.
  • Possible additive manufacturing processes can be, for example, 3D printing, Selective Laser Melting (SLM), Electron Beam Melting (EBM), Binder Jetting (BJ), Fused Deposition Modeling (FDM) or laser sintering, in particular with materials made of metal.
  • SLM Selective Laser Melting
  • EBM Electron Beam Melting
  • BJ Binder Jetting
  • FDM Fused Deposition Modeling
  • laser sintering in particular with materials made of metal.
  • sintering and / or treatment or processing of the surface can also take place in order to achieve a quality that meets requirements.
  • the device or the at least one device part is formed from ceramic and / or by means of stereolithography (SLA).
  • SLA stereolithography
  • the device or the at least one device part is to be formed from metal, production by means of laser sintering, in particular selective laser sintering (SLS), is preferred.
  • the device or the at least one device part can also be formed in another way, in particular from metal, and subsequently sintered.
  • a spinning device which has a device for fiber separation according to one of the preferred embodiments described above, the passage width of the annular channel in a section from the central passage width or from the channel center to the second passage width or up to the channel outlet continuously or in sections in such a way that the mean passage width is smaller than the second passage width.
  • the ring-shaped channel widens again from the middle of the channel, in particular continuously or in steps, in the direction of the channel outlet, in that the mean passage width is made smaller than the second passage width.
  • the inner wall delimiting this annular channel section is designed without edges in a manner as described above. This enables a defined and controlled guidance of the detached individual fibers while avoiding disruptive turbulence in the accompanying fluid flow.
  • the spinning device further comprises a second pressurizable hollow body section having a spinning segment for spinning a thread from the fed individual fibers, the spinning segment facing the opening channel segment in the guiding direction of the sliver end or the individual fibers communicating with this for receiving and reduplicating the detached and in particular stretched individual fibers is arranged downstream, and the spinning segment is assigned a swirling means for generating a swirling flow that swirls the individual fibers with one another to generate a genuinely twisted spinning thread.
  • the spinning device can also be used to produce a genuinely twisted yarn or a genuinely twisted spun thread, the device responsible for producing the yarn or thread being constructed more simply with less complex components.
  • the channel center is arranged closer to the channel inlet than to the channel outlet.
  • the ring-shaped channel is designed in such a way that a distance of the sliver or the individual fibers from the channel entrance to the channel center is shorter than a distance of the fiber band or the individual fibers from the center of the channel to the channel exit.
  • the dissolved individual fibers can thereby be carried away in a more controlled and reliable manner from the ring-shaped channel for subsequent processing and / or treatment processes such as twisting under the action of a turbulence fluid flow to produce a genuinely twisted spun thread.
  • the core element forms a double cone extending between the channel inlet and the channel outlet with congruent base areas near or in the passage plane of the channel center.
  • the kernel element is therefore exact, that is to say with low tolerances, can be designed to be space-saving and inexpensive.
  • the configuration of the annular channel preferably follows the following formula:
  • A cross-sectional area of the annular channel (at each location of the annular channel along the guide direction)
  • Branch eg cross-sectional area of the bearing element (at each location of the bearing element along the
  • the swirling means is preferably formed by the magnetically mounted rotatable core element or by the sub-element.
  • the turbulence required to generate the spun thread from the individual fibers can be generated in the fluid flow in a specific manner.
  • the core element can be mounted within the first hollow body section of the device purely by means of the supplied fluid flow.
  • the core element in the fluidless state of the device, the core element is deposited on a lower inner wall of the dissolving channel segment due to gravity. After a flow of fluid has been supplied, the core element is lifted and held in a stable position almost in the middle or in the middle within the passage of the Auflenseka nalsegments.
  • the core element has a correspondingly suitable shape, such as, for example, the shape preferably described above as a double cone.
  • We essential for the lift-off is a cone tip of the core element formed opposite to the guide direction or fluid flow direction, in order to be able to ensure a fluid flow-side buoyancy of the Kernele element into the middle position when a fluid flow is supplied.
  • the core element mounted on the fluid flow side can be rotatably mounted, whereby the core element can also form the swirling means.
  • the rotation can in particular be generated by means of the action of magnetic force, for example according to one of the preferred embodiments described above.
  • the spinning segment has at least two injector nozzles arranged circumferentially on its inner wall as part of the swirling means or as the swirling means, the injector nozzles for introducing a swirling flow that revolves around a central axis of the spinning segment and runs along this are arranged and designed, whereby a vortex flow can be generated in the spinning segment for producing the genuinely twisted spun thread from the individual fibers fed into the spinning segment.
  • a defined injector nozzle channel section ending in the injector nozzle mouth can be formed both at an angle to the circumferential direction of the inner wall of the spinning segment and at an angle to the guide direction of the individual fibers or the direction of passage of the spinning segment, around one along the inner wall of the second spinning segment directed in the guiding direction or passage direction, in particular controllable, vortex flow to be introduced.
  • the injector nozzles can be provided individually or in a combinatorial manner with the rotatable design of the core element to produce a defined vortex flow within the spinning segment, on the basis of which the genuinely twisted spinning thread can be generated.
  • the spinning device or components of the spinning device can preferably be manufactured in a manner as described above by means of a machining and / or additive manufacturing process.
  • the spinning device or the first hollow body section of the device and the second hollow body section can be designed in one piece or in several pieces as required, or according to a further preferred embodiment.
  • a method for spinning from individual fibers using a spinning device according to one of the preferred embodiments described above is proposed.
  • the method has a step of accompanying fluid, in particular air, feeding a sliver end into the inlet channel segment and a step of operating the swirling means for spinning a thread from the individual fibers fed via the opening channel segment into the spinning segment.
  • the air-accompanying supply can preferably take place with compressed air supply via compressed air nozzles assigned to the inlet channel segment.
  • the compressed air nozzles can be positioned in front of the inlet channel segment along the sliver feed path.
  • the air-accompanying supply can take place by generating a suction air flow in the inlet channel segment via injector nozzles which are arranged downstream in the inlet channel segment or this sem along the sliver supply direction.
  • the injector nozzles can also form the swirling means.
  • the method has a step of regulating the fiber sliver feed, the fluid flow accompanying the fiber sliver and / or operating the swirling means in order to produce a spinning thread that is tailored to requirements.
  • the feed speeds of the sliver and / or the fluid flow accompanying the sliver can be adjusted.
  • the operation of the swirling means can be provided to be adjustable in a defined manner in order to be able to suitably adapt the spinning process.
  • the setting and / or regulation of the respective systems can be carried out in a preferred manner take place based on measured values, which can be transmitted by a sensor system for recording suitable measurement data of the respective systems.
  • the sensor system can be provided at appropriate, suitable locations on the spinning device. On the other hand, this favors an automated, adjustable and / or controllable spinning process.
  • Fig. 1 is a side view in a schematic representation of a spinning device according to an exemplary embodiment
  • Fig. 2 is a perspective longitudinal sectional view along the section plane A-A in a schematic representation of the spinning device shown in Fig. 1,
  • FIG. 3 shows a perspective cross-sectional view along the section plane B-B in a schematic representation of the spinning device shown in FIG. 1,
  • Fig. 4 is a front view in schematic representation of the spinning device shown in Fig. 1,
  • Fig. 5 is a rear view in schematic representation of the spinning device shown in Fig. 1, and
  • FIG. 6 is a perspective longitudinal sectional view along the section plane AA in a schematic representation of the spinning device shown in Fig. 1 according to an alternative Ausrete approximately example.
  • FIG. 1 shows a side view in a schematic representation of a spinning device 2 according to an exemplary embodiment.
  • the spinning device 2 is functionally divided into several sections along its elongated extension direction LE, an end section shown on the left in FIG.
  • a middle section adjoining the input channel segment 3 is designed as a disintegration channel segment 6, the section opposite the input channel segment 3 at the end defining a spinning segment 13 with injector nozzles 14 with the interposition of the disintegration channel segment 6.
  • These three functional sections are essential for the spinning device 2 according to this embodiment.
  • the spinning segment 13 could be provided with a functionally independent output segment for discharging or a withdrawal section for withdrawing the spun thread.
  • the output section is assigned to the spinning segment 13 and a component thereof, as described in more detail below.
  • FIG. 2 shows a perspective longitudinal sectional view along the sectional plane AA in a schematic representation of the spinning device 2 shown in FIG.
  • the input channel segment 3 arranged at the end has a receiving section 4 which tapers conically along the longitudinal extension direction LE in the direction of the opening channel segment 6 and which merges into a cylindrical passage section 5 in order to reliably relieve the sliver or fiber sliver end received via the receiving section 4 in the direction of the opening channel segment 6 to guide fluid-accompanying.
  • a gaseous medium such as, for example, ambient air is preferably used as the fluid.
  • the inlet channel segment 3 can preferably include nozzles in the loading area of the cylindrical passage section 5 in the direction of the downstream Auflenseka nalsegments 6, via which the fluid can be introduced into the cylindrical passage section 5.
  • a suction flow can be generated in the region of the receiving section 4, as a result of which the sliver can be introduced more reliably into the input channel segment 3 or into the spinning device 2.
  • the arrangement of such nozzles can be dispensed with, whereby the ambient air which is already present accompanies the supplied sliver in the spinning device 2 and where defined fluid flows within the spinning device 2 are supported at least via the injector nozzles 14 arranged in the spinning segment 13 a passage that changes along the direction of longitudinal extent LE can be generated.
  • the guiding direction of the sliver is directed essentially along the longitudinal extension direction LE of the spinning device 2.
  • the inlet channel segment 3 is adjoined in the guiding direction of the feedable fiber sliver by the opening channel segment 6 for breaking up the fluid-accompanying fed fiber sliver end into individual fibers.
  • the opening channel segment 6 has a core element 8 in the form of a double cone, the double cone being symmetrical to the longitudinal center axis LM and asymmetrical to a common cross-sectional plane in which the base surfaces of the two cones forming the double cone are arranged , is designed.
  • the end of the core element 8 has rounded first and second cone tips 8a, 8b.
  • the core element 8 is arranged within the passage section of the opening channel segment 6 in the center to form an annular channel 10 that is uniformly configured along the longitudinal direction LE at every location of the core element 8 and is held by three bearing elements 9 evenly distributed around the core element 8 ( Figures 3 and 4).
  • the bearing elements 9 are arranged near the first conical tip 8a facing the inlet channel segment 3 and have an aerodynamic teardrop shape running transversely to the direction of longitudinal extent LE, such that the drop tip is arranged on the core element 8 and the drop base is arranged on the inner wall 7.
  • the drop width running in the circumferential direction of the core element 8 is approximately constant along the longitudinal extension direction LE.
  • the respective bearing element 9 is designed to taper in the direction of the inlet channel segment 3 according to this exemplary embodiment, likewise drop-like, as shown in FIG. In this way, otherwise possible turbulent fluid flows can be avoided.
  • the drop depth which is perpendicular to the drop width along the longitudinal extension direction LE, is runs, selected in such a way that the core element 8 can be held reliably and as far as possible without evasive movements and / or vibrations on the second cone tip 8b facing away from the inlet channel segment 3.
  • the drop depth is selected to be greater than the largest fiber length of the fiber material to be dissolved in order to be able to reduce the risk of fiber laps on the bearing elements 9.
  • the passage section of the dissolving channel segment 6 and the core element 8 are matched to one another in such a way that a uniform annular channel 10 is formed, which has a channel inlet 11 on the first cone tip 8a with a first passage width and a channel outlet 12 spaced therefrom at the second cone tip 8b having a second passage width, the passage width of the annular channel 10 in a section from the first passage width to a mean passage width of a channel center arranged between the channel inlet 11 and the channel outlet 12 tapers continuously or in sections in such a way that the mean passage width is smaller than the first passage width.
  • the tapered configuration causes an increase in the flow rate in the direction of the center of the channel.
  • the passage width increases (in particular continuously or in sections) from the center of the channel to the channel outlet 12. This brings about a defined decrease in the flow velocity.
  • the degree of tapering as well as the degree of expansion of the passage width over the extension length of the annular channel 10 can be selected as needed to match the sliver to be separated.
  • A cross-sectional area of the annular channel (at each location of the annular channel along the guide direction)
  • Branch eg cross-sectional area of the bearing element (at each location of the bearing element along the
  • the outer diameter of the annular channel 10 corresponds in this exemplary embodiment to the inner diameter of the passage of the opening channel segment 6.
  • the inner diameter of the annular channel 10 corresponds to the outer diameter of the core element 8 in this exemplary embodiment.
  • the cross-sectional area of the annular channel 10 is a logical result from the surface section framed by the outer diameter and the inner diameter of the annular channel 10.
  • respective suitable devices 1 adapted to the material can be provided for different fiber band materials for the defined fiber separation of a fed fiber band end.
  • the device 1 can be configured in several parts according to an embodiment not shown, with the input channel segment 3 and the dissolving channel segment 6 each forming an independently formed part, which is correspondingly connected to one another by conventional fastening / Connection measures are connected.
  • the individual parts can furthermore preferably be provided such that they can be replaced without being destroyed, whereby the variability can be increased.
  • the spinning segment 13 follows the opening channel segment 6 along the longitudinal direction on the side opposite the inlet channel segment 3.
  • the spinning segment 13 has a further passage section 15 which communicates with the channel outlet 12 and extends from the end opposite the inlet channel segment 3 the spinning device 2 continues.
  • the spinning segment 13 has three injector nozzles 14, evenly arranged around the wide ren passage section 15, for supplying a vortex flow, in particular a compressed air vortex flow, the injector nozzles 14 pointing in the direction of the end of the spinning device 2 opposite the inlet channel segment 3. This causes a suction flow in the dissolving channel segment 6, which is continues into the input channel segment 3. On the one hand, the suction flow causes the flow velocity to increase, which means that the fibers to be separated can be stretched.
  • the circumferential arrangement and alignment of the injector nozzles 14 enables a vortex flow within the further passage section 15, which continues into the passage section between the center of the duct and the duct outlet 12 of the annular duct 10.
  • the fibers separated in the opening channel segment 6 experience a swirling impulse through which the fibers can wind around the second cone tip 8b and unite at the end of the opening channel segment 6 to form a genuinely twisted spun thread.
  • the supply of a fluid can be regulated and controlled via the injector nozzles 14 in a known manner.
  • the injector nozzles 14 with the supplied fluid can also be used to supply means such as additives for adhering to the thread to be spun in order to influence the thread property as required.
  • Such a means feed can be arranged upstream of the Spinnein direction 2 or the input channel segment 3 in an alternative or additional manner by providing corresponding feeds at another location.
  • the spinning segment 13 comprises an output section 16 downstream of the injector nozzles 14 in the spinning direction, via which the spun thread can be fed out of the spinning device 2 and to a thread treatment element downstream of the spinning device 2 in the thread path.
  • the spinning device 2 can provide a pull-off device for pulling the spun thread from the spinning device 2 or another device such as a sensor device for detecting a thread property such as, for example, hairiness, thick and thin, etc. or a thread store for temporarily storing the spun thread be downstream in cash.
  • the output section 16 has an enlarged passage section compared to the section with the injector nozzles 14, whereby the flow velocity and the eddy currents for suitable discharge of the spun thread can be relaxed.
  • a longitudinal center axis of the core element 8 is congruent with the longitudinal center axis LM of the hollow body surrounding the core element 8 or opening channel segment 6, the bearing elements 9 being arranged near the first conical tip 8a or the channel inlet 11 of the annular channel 10. This can cause the end of the sliver to spread when it enters the annular channel 10 can be achieved, which has an advantageous effect on the dissolution of the fiber ribbon into individual fibers.
  • the individual fibers can be reliably detached from the sliver and stretched at the same time by means of the increase in the flow velocity due to the design of this exemplary embodiment along the longitudinal direction LE of the device 1 to the center of the channel.
  • the injector nozzles 14 cause the vortex flow required in this embodiment so that the detached or detached individual fibers can be guided around the conical section of the core element 8 within the annular channel 10 that follows the channel center so that they are in the area of the second Swirl or spin the conical tip 8b or shortly thereafter to form a genuinely twisted spinning thread, which can ultimately be led out of the spinning device 2 via the output section 16.
  • the swirling means is formed by the core element 8 itself or by the conical section of the core element 8 following the channel center.
  • the former can be done in particular by a contactless mounting of the core element 8 within the passage of the dissolving channel segment 6, which can be implemented, for example, via a magnetic bearing device, which more preferably cooperates with the core element 8 in such a way that it can be set in defined rotational movements.
  • the contactless storage can take place through the supplied fluid flow, by means of which the core element 8 lifts into an operating position after the supply of the fluid flow from a rest position in which the core element 8 is placed due to gravity on a lower inner wall of the passage of the dissolving channel segment 6, in which the core element 8 is held or stored almost centrally or centrally within the passage of the Auflensekanalseg element 6 due to the fluid flow. If eddy currents are also introduced into the supplied fluid flow, the core element 8 can be set in rotation in order to form the turbulence means.
  • the conical section of the core element 8 that follows the channel center forms the swirling means.
  • This conical section is rotatably supported by the preceding conical section of the core element 8.
  • the preceding conical section is, as described above by way of example, held in the passage of the dissolving channel segment 6 via the bearing elements 9.
  • the rotation of the following conical section is controlled and / or regulated as required by means of a magnetically acting rotation device, by means of an introduced rotational flow or a rotary drive comprised by the preceding conical section.
  • FIG. 6 shows a perspective longitudinal sectional view along the sectional plane AA in a schematic representation of the spinning device 2 shown in FIG. 1 according to an alternative exemplary embodiment.
  • This alternative exemplary embodiment differs from the exemplary embodiment shown in FIG. 2 only by an alternatively designed bearing element 9 'and by an additional bearing element 9 in the area of the second cone tip 8b, the additional bearing element 9 being arranged upstream in the guide direction of the sliver.
  • the rest of the configuration is identical to the configuration of the exemplary embodiment according to FIG. 2, the same reference numerals corresponding to the components of the spinning device 2 described above, to the description of which for the alternative exemplary embodiment reference is hereby made.
  • the alternative designed bearing element 9 ' is arranged in the region of the front end 8a' of the core element 8, which front end 8a 'faces the inlet channel segment 3.
  • the alternative bearing element 9 ' has a front end 9a' pointing in the direction of the input channel segment 3, which is arranged in a passage area of the input channel segment 3, the alternative bearing element 9 'extending along the guiding direction into the dissolving channel segment 6.
  • the alternative bearing element 9 ' extends in ra dialer direction of the device 1 both from the inner wall of the passage of the input channel segment 3 and from the inner wall 7 of the passage of the opening channel segment 6 to the opposite outer wall of the core element 8 and thereby forms a ramp 17 for the sliver to be fed to the core element 8.
  • the ramp 17 consequently connects the surface side of the inner wall of the input channel segment 3 with the surface side of the outer wall of the core element 8 along the guide direction, whereby a defined guide surface section 18 is provided for the sliver to be broken along the guide direction.
  • the guide surface section 18 is designed flat along the guide direction and concave transversely thereto and has a slope angle in the guide direction which is 5 ° greater than the slope angle of the surface section of the outer wall of the core element 8 adjoining the guide surface section 18.
  • the spinning device 2 preferably has a sensor system for monitoring, for example, the sliver feed, the fiber singling process, the spinning process and / or the thread withdrawal from the spinning device 2.
  • the sensor system is arranged at suitable locations on the device 1 and / or the spinning segment 13 in or on the corresponding first or second hollow body section.
  • the section of the spinning device 2, which is to be monitored comprises annular channel portion, be formed transparent.
  • the sensor system can be arranged outside the spinning device 2, as a result of which the sensor system can be provided in a cost-effective and simplified manner.
  • an exemplary embodiment comprises a “and / or” link between a first feature and a second feature, this is to be understood in such a way that the exemplary embodiment according to one embodiment has both the first feature and the second feature and, according to a further embodiment, either only the first Feature or only the second feature.

Landscapes

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

Abstract

L'invention concerne un dispositif (1) pour individualiser des fibres d'une extrémité de ruban de fibres fourni, et un dispositif de filage (2) comprenant un tel dispositif (1). Le dispositif (1) comprend une première section de corps creux, à laquelle peut être appliquée une pression et qui comprend un segment de canal d'entrée (3) destiné à recevoir et guider une extrémité de ruban de fibres acheminé conjointement avec un fluide dans la direction d'un segment de canal de démêlage (6) disposé en aval de celui-ci, et le segment de canal de démêlage (6), qui communique avec le segment de canal d'entrée (3) et qui est disposé en aval de celui-ci, pour démêler l'extrémité de ruban de fibre acheminé conjointement avec le fluide en fibres individuelles. Le segment de canal de démêlage (6) forme un canal annulaire (10) qui communique avec le segment de canal d'entrée (3). Le canal annulaire (10) comporte une entrée de canal (11) ayant une première largeur de passage et une sortie de canal (12) à une certaine distance de celle-ci et ayant une deuxième largeur de passage. Dans une section qui s'étend de la première largeur de passage à une largeur de passage centrale d'un centre de canal disposé entre l'entrée de canal (11) et la sortie de canal (12), la largeur de passage du canal annulaire (10) s'effile constamment ou en sections, de sorte que la largeur de passage centrale est inférieure à la première largeur de passage.
EP21715794.0A 2020-03-25 2021-03-23 Dispositif d'individualisation de fibres, et dispositif de filage comprenant un tel dispositif Pending EP4127283A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020108257.6A DE102020108257A1 (de) 2020-03-25 2020-03-25 Vorrichtung zur Faservereinzelung und Spinneinrichtung umfassend eine solche Vorrichtung
PCT/EP2021/057376 WO2021191184A1 (fr) 2020-03-25 2021-03-23 Dispositif d'individualisation de fibres, et dispositif de filage comprenant un tel dispositif

Publications (1)

Publication Number Publication Date
EP4127283A1 true EP4127283A1 (fr) 2023-02-08

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ID=75339681

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Application Number Title Priority Date Filing Date
EP21715794.0A Pending EP4127283A1 (fr) 2020-03-25 2021-03-23 Dispositif d'individualisation de fibres, et dispositif de filage comprenant un tel dispositif

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Country Link
US (1) US20230115870A1 (fr)
EP (1) EP4127283A1 (fr)
JP (1) JP2023518576A (fr)
CN (1) CN115335559A (fr)
DE (1) DE102020108257A1 (fr)
WO (1) WO2021191184A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020133359A1 (de) * 2020-12-14 2022-06-15 Saurer Spinning Solutions Gmbh & Co. Kg Multifunktionsdüse für eine Spinnmaschine

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1500931A (en) * 1922-02-23 1924-07-08 James P Hooper Mfg Company Centrifugal spinneret
US3424359A (en) * 1967-07-17 1969-01-28 Leesona Corp Yarn handling apparatus
US3604194A (en) 1968-01-30 1971-09-14 Toray Industries Fiber supply method and apparatus in an open-end spinning system utilizing airflow and centrifugal force
DE2614442C2 (de) * 1976-02-14 1994-05-19 Goetzfried Geb Wieland Franzis Vorrichtung zum pneumatischen Falschdrallspinnen eines Fadens
US4457130A (en) * 1981-10-13 1984-07-03 Murata Kikai Kabushiki Kaisha Air spinning nozzle unit
US4437302A (en) * 1982-01-20 1984-03-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho False twisting air nozzle
IN166161B (fr) * 1985-06-07 1990-03-24 Alan Nicholas Jacobsen
JPH04118466U (ja) * 1991-04-03 1992-10-22 村田機械株式会社 紡績装置
JP2616428B2 (ja) * 1994-01-25 1997-06-04 村田機械株式会社 紡績機の糸継ぎ方法
JP2708000B2 (ja) * 1995-02-10 1998-02-04 村田機械株式会社 紡績装置
US6679044B2 (en) * 2000-12-22 2004-01-20 Maschinenfabrik Rieter Ag Pneumatic spinning apparatus
EP1284312B1 (fr) * 2001-08-17 2005-09-14 Maschinenfabrik Rieter Ag Dispositif pour réaliser un fil
CN1882728B (zh) * 2003-09-12 2010-09-01 里特机械公司 并条-头道粗纱联合机和用于从纤维组中制造粗纱的方法
EP1584715A1 (fr) 2004-04-07 2005-10-12 Maschinenfabrik Rieter Ag Procédé pour fabriquer un fil dans un métier à filer à vortex d'air
DE102005022187A1 (de) * 2005-05-13 2006-11-16 Saurer Gmbh & Co. Kg Anspinnverfahren an einer Luftspinnmaschine sowie Spinnvorrichtung und Luftspinnmaschine
DE102007006674A1 (de) * 2007-02-10 2008-08-14 Oerlikon Textile Gmbh & Co. Kg Luftspinnvorrichtung
DE102008006379A1 (de) * 2008-01-29 2009-07-30 Oerlikon Textile Gmbh & Co. Kg Luftspinnvorrichtung
DE102008050071A1 (de) 2008-10-01 2010-04-08 Oerlikon Textile Gmbh & Co. Kg Offenend-Rotorspinnvorrichtung
DE102009034206A1 (de) * 2009-07-17 2011-01-27 Maschinenfabrik Rieter Ag Bauteil für eine Luftdüsenspinnvorrichtung
CH706923A1 (de) * 2012-09-07 2014-03-14 Rieter Ag Maschf Spinnstelle einer Luftspinnmaschine.
CH708620A1 (de) * 2013-09-30 2015-03-31 Rieter Ag Maschf Faserführungselement für eine Spinndüse einer Luftspinnmaschine sowie damit ausgestattete Spinnstelle.
CN103603095B (zh) * 2013-11-11 2015-12-09 东华大学 一种喷气涡流纺纱装置中气流喷射孔的配置结构
CH709615A1 (de) * 2014-05-13 2015-11-13 Rieter Ag Maschf Spinnstelle einer Luftspinnmaschine sowie Betrieb einer solchen.
DE102015120437A1 (de) * 2015-11-25 2017-06-01 Maschinenfabrik Rieter Ag Luftspinnmaschine sowie Verfahren zum Betrieb derselben
ITUA20163006A1 (it) * 2016-04-29 2017-10-29 Savio Macch Tessili Spa Dispositivo di filatura di tipo air-jet
CH712489A1 (de) * 2016-05-26 2017-11-30 Rieter Ag Maschf Garnbildungselement für eine Vorspinnmaschine sowie damit ausgerüstete Vorspinnmaschine.
IT201600070676A1 (it) * 2016-07-07 2018-01-07 Savio Macch Tessili Spa Dispositivo di filatura di tipo air-jet
DE102017115939A1 (de) * 2017-07-14 2019-01-17 Saurer Spinning Solutions Gmbh & Co. Kg Verfahren zum Betreiben einer Luftspinnvorrichtung, Fadenleitkanal und Luftspinnmaschine umfassend einen solchen Fadenleitkanal

Also Published As

Publication number Publication date
CN115335559A (zh) 2022-11-11
WO2021191184A1 (fr) 2021-09-30
DE102020108257A1 (de) 2021-09-30
US20230115870A1 (en) 2023-04-13
JP2023518576A (ja) 2023-05-02

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