US20200173061A1 - Method and apparatus for producing a yarn - Google Patents

Method and apparatus for producing a yarn Download PDF

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Publication number
US20200173061A1
US20200173061A1 US16/629,542 US201816629542A US2020173061A1 US 20200173061 A1 US20200173061 A1 US 20200173061A1 US 201816629542 A US201816629542 A US 201816629542A US 2020173061 A1 US2020173061 A1 US 2020173061A1
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United States
Prior art keywords
fibers
guide
fiber
guide elements
yarn
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Abandoned
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US16/629,542
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English (en)
Inventor
Robert Daniel Kaminszky
Miguel Magalhaes de sa Alcino
Stéphane Thouvay
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Suedwolle Group GmbH
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Suedwolle & Co KG GmbH
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Publication of US20200173061A1 publication Critical patent/US20200173061A1/en
Assigned to SÜDWOLLE GROUP GMBH reassignment SÜDWOLLE GROUP GMBH MERGER (SEE DOCUMENT FOR DETAILS). Assignors: Südwolle GmbH & Co. KG
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • 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
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D02G3/281—Doubled, plied, or cabled threads using one drawing frame for two slivers and twisting of the slivers to a single yarn, i.e. spin-twisting
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/01—Natural animal fibres, e.g. keratin fibres
    • D10B2211/02—Wool
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • the invention relates to a method and an apparatus for producing a yarn.
  • a known method of producing a yarn formed by spinning at least two individual fibers comprises the following steps: providing at least two individual fibers to be spun to form the yarn to be produced, feeding the at least two provided fibers to a spinning device comprising at least one spindle element via a guide device comprising a plurality of, in particular cylinder-like or cylindrical, guide elements, and spinning the fed fibers in the spinning device, forming the yarn to be produced.
  • the present invention is based on the object of providing an improved method of producing a yarn, in particular with respect to producing a yarn with improved properties.
  • the method described herein generally serves to produce at least one yarn. Naturally, a plurality of yarns can also be produced by the method in a corresponding manner.
  • the method comprises three essential steps, which are explained in more detail below.
  • a first step of the method at least two individual fibers are provided, which are to be spun together to form the yarn to be produced.
  • the fibers can be e.g. staple fibers.
  • the fibers can also be referred to or considered as a roving or pre-yarn. When a “fiber” is mentioned herein, this can therefore also be understood to mean a roving or pre-yarn.
  • the fibers can in each case be provided via a fiber supply unit, such as e.g. a fiber bobbin, from which a fiber to be spun into a yarn within the framework of the method is unwound.
  • the number of fiber supply units is typically determined according to the number of fibers to be spun into a yarn according to the method.
  • the at least two provided fibers are fed to a spinning device comprising at least one spindle element or bobbin element via a guide device comprising a plurality of guide elements.
  • the fibers to be spun into the yarn are thus fed to a spinning device via a guide device.
  • the guide device typically comprises a plurality of guide elements.
  • the guide elements are typically arranged consecutively in the fiber guiding direction, such that a fiber to be guided can be guided from a first guide element to a further guide element arranged downstream thereof in the fiber guiding direction.
  • a first guide element of the guide device in the fiber guiding direction is arranged immediately downstream of the respective fiber supply units in the fiber guiding direction; a last guide element in the fiber guiding direction is arranged immediately upstream of the spinning device in the fiber guiding direction.
  • suitable e.g. plate-like or plate-shaped support elements can be provided, which perform a desired supporting action for the fibers to be guided.
  • Appropriate support elements can also be arranged e.g. between the first guide element and the fiber supply units.
  • Respective guide elements typically have a cylinder-like or cylindrical geometric form or basic shape; the guide elements can therefore be referred to or considered as guide rollers or rolls or cylinders.
  • Respective cylinder-like or cylindrical guide elements are typically mounted rotatably around their axis of symmetry or central axis, such that a guided movement of the fibers to be guided in the direction of the spinning device can be enabled by rotating movements of the guide elements around their respective axis of symmetry or central axis.
  • a plurality of or all the guide elements can be provided with a particular adhesive area or surface, achieved e.g. by rubber coating, which allows a desired guiding of the fibers owing to an adhesive effect exerted on the fibers, i.e. in particular impedes or prevents an undesirable lateral slipping of the fibers in terms of the fiber guiding direction.
  • a spinning of the fibers fed to the spinning device takes place in the spinning device, forming the yarn to be produced.
  • the spinning of the fibers to form the yarn to be produced typically takes place in a spinning region following the last guide element.
  • the spinning device comprises at least one spindle element or bobbin element, on to which the fibers that have been spun together or the yarn formed by spinning the fibers is/are wound.
  • a spindle element or bobbin element can be a bobbin or cop. The number of spindle elements or bobbin elements or the number of spinning regions resulting therefrom is determined in accordance with the number of yarns to be produced.
  • the at least two fibers to be spun into a yarn are fed to the spinning device not via one (common) guide element but via at least two separate, in particular cylinder-like or cylindrical, guide elements that are arranged such that they are spatially separated from each other in at least one spatial direction.
  • a first fiber to be spun to form the yarn to be produced is fed to the spinning device via a first guide element and a second fiber to be spun with the first fiber to form the yarn to be produced is fed to the spinning device via a second guide element which is arranged such that it is separated from the first guide element in at least one spatial direction.
  • a guide device which comprises at least two separate, in particular cylinder-like or cylindrical, guide elements arranged such that they are spatially separated from each other in at least one spatial direction immediately upstream of the spinning device.
  • the guide device used within the framework of the method thus comprises at least two last guide elements; as will be seen below, these guide elements are typically arranged at the same level in relation to the spinning device, i.e. at the same distance from the spinning device, but laterally offset from each other. It can be seen from the above statements that the at least two fibers are fed to the spinning device via the at least two separate guide elements, arranged such that they are separated from each other in at least one spatial direction, immediately before being brought together at the fiber merging point.
  • the fibers to be spun into a yarn via at least two separate guide elements arranged such that they are spatially separated from each other in at least one spatial direction it is possible to influence, i.e. in particular to increase, the free length of the fibers to be spun into a yarn between leaving the guide device and a fiber merging point at which the fibers are brought together, which has a positive impact on the properties of the yarn that is to be or has been produced.
  • the increase in the free length of the fibers is due to the fact that the fiber merging point, at which the fibers are brought together, is comparatively significantly further away from the last guide elements and thus significantly closer to the spinning device when the fibers are fed via separate guide elements.
  • a corresponding fiber merging point typically represents part of a so-called spinning triangle.
  • the fiber merging point in this case typically forms an apex of the spinning triangle facing the spinning device.
  • the shape of the spinning triangle can therefore also be modified according to the method compared to conventional methods, since the spinning triangle is “stretched” in the fiber guiding direction owing to the aforementioned increase in the free length of the fibers forming the sides of the spinning triangle.
  • the method is based on the finding that, by means of influencing, i.e. in particular increasing, the free length of the fibers to be spun into a yarn between leaving the guide device, i.e. the respective last guide element (from the point of view of the fiber), and the fiber merging point at which the fibers are brought together, certain, in particular mechanical, properties of the yarn that is to be or has been produced can be obtained.
  • the (individual) fibers can already be twisted (considerably) before the fiber merging point, which has a positive effect on the properties of the yarn that is to be or has been produced.
  • neps knocks, burls
  • the yarns produced according to the method accordingly display a (significantly) lower tendency to form neps and (significantly) lower hairiness. Accordingly, yarns with improved properties can be produced by the method.
  • the free length of a respective fiber between the guide device and the merging point can be in a range of e.g. between 4 and 20 cm, in particular in a range of between 7.5 and 15 cm and preferably 10 cm.
  • fiber lengths of at least 4 cm, in particular at least 6 cm particularly advantageous fiber properties can be obtained.
  • upper and lower exceptions to these figures are possible.
  • a spinning device is used of which the spindle element or bobbin element is arranged in alignment with a space formed between the guide elements by the spatially separated arrangement of the guide elements assigned thereto in the fiber guiding direction.
  • the spindle element or bobbin element is accordingly arranged with a lateral offset relative to the guide elements assigned thereto in relation to the fiber guiding direction; in particular the spindle element or bobbin element, although separated from the guide elements in the fiber guiding direction, is arranged centrally between the guide elements assigned thereto.
  • the respective spindle elements or bobbin elements are each arranged in alignment with a space formed between the guide elements respectively assigned thereto by the spatially separated arrangement of the guide elements respectively assigned thereto in the fiber guiding direction.
  • the guide elements are typically arranged at the same level in relation to the spinning device, but laterally offset from each other.
  • at least two guide elements arranged such that they are spatially separated from each other in a spatial direction or plane running transversely, optionally also at an angle, to the fiber guiding direction are used.
  • guide elements each having a cylinder-like or cylindrical basic shape are used, these are typically arranged coaxially and such that they are spatially separated from each other in the direction of their respective central axes.
  • Two guide elements arranged such that they are spatially separated from each other in a spatial direction or plane running transversely or at an angle to the fiber guiding direction can be referred to or considered as a guide element pair assigned to a specific spindle element or bobbin element, via which the fibers forming the yarn to be wound on the respective spindle element or bobbin element are fed.
  • the free length between respective points at which the respective fibers leave the respective guide element in the direction of the or a merging point can be in a range of e.g. between 4 and 10 cm, in particular between 5 and 9 cm and preferably at least approx. 6 cm. In principle, however, upper and lower exceptions to these figures are possible.
  • the fibers are brought together at a fiber merging point.
  • the fiber merging point typically forms an apex of a spinning triangle facing the spinning device.
  • the angle of the spinning triangle in the region of the apex facing the spinning device is typically in a range of between 0 and 90° or 1 and 90°; in particular the angle is less than 90°, in particular less than 45° and in particular less than 30°.
  • the angle between the at least two fibers after leaving the respective guide elements is thus typically in a range of between 0 and 90° or 1 and 90°; in particular the angle is less than 90°, in particular less than 45° and in particular less than 30°. Accordingly, the angle is typically an acute angle.
  • At least three fibers are spun together to form the yarn.
  • the at least three fibers are typically brought together at the fiber merging point. Yarns can therefore be produced from more than two fibers (multi-fiber yarns).
  • the spinning of at least three fibers to form a yarn according to the method can be carried out such that at least two fibers are fed to the spinning device jointly via a first guide element and at least one further fiber is fed via a further guide element arranged such that it is spatially separated from the first guide element in at least one spatial direction or plane. At least two fibers can thus be fed via a first guide element and at least one further fiber via a further guide element.
  • the spinning of at least three fibers to form a yarn according to the method can be achieved such that the at least three fibers are fed to the spinning device via three separate guide elements arranged such that they are separated from each other in at least one spatial direction or plane, wherein at least one first fiber is fed via a first guide element, at least one second fiber is fed via a second guide element arranged such that it is spatially separated from the first guide element in at least one spatial direction or plane, and at least one third fiber is fed via a third guide element arranged such that it is spatially separated from the second guide element in at least one spatial direction or plane.
  • each fiber can also be fed via a separate guide element.
  • At least two fibers and at least one filament which can be a single or multi-filament—are spun together to form the yarn.
  • the at least two fibers and the at least one filament are typically brought together at the fiber merging point.
  • Yarns can therefore be produced from at least two fibers and at least one filament.
  • An appropriate filament can be a continuous filament.
  • An appropriate filament can be made of or can comprise an elastic filament material; a filament can be e.g. a filament of elastane (sometimes referred to commercially as Lycra), polyamide, polyester or polypropylene.
  • the spinning of at least two fibers and at least one filament according to the method can be carried out such that at least two fibers are fed to the spinning device via two separate guide elements arranged such that they are separated from each other in at least one spatial direction or plane, and the at least one filament is fed from a (separate), in particular spool-like or spool-shaped, filament storage unit, such as e.g. a filament bobbin, or via a third guide element which is separate from the two separate guide elements.
  • the at least two fibers are fed to the spinning device with a pre-tension produced by a drafting, in particular a longitudinal drafting, of the fibers.
  • a drafting in particular a longitudinal drafting
  • fed filaments it is possible in this case to implement different drafting regions or zones, i.e. for example a pre-drafting zone and a main drafting zone, in which the fibers and/or filaments are subjected to different degrees of drafting.
  • fibers with identical and non-identical chemical and/or geometric and/or physical, in particular mechanical, properties can be spun together to form the yarn.
  • the fibers spun according to the method, where they are not identical, can therefore differ in at least one chemical property, i.e. in particular in at least one property relating to the chemical properties of the fiber, such as e.g. the chemical composition, and/or in at least one geometric property, i.e. in particular in at least one property relating to the geometry of the fiber, such as e.g. the fiber diameter, and/or in at least one physical, in particular mechanical, property, i.e. in particular in at least one property relating to the physical, in particular mechanical, properties of the fiber, such as e.g. fiber strength.
  • all the natural fibers i.e. for example alpaca fibers, cotton fibers, cashmere fibers, mohair fibers, silk fibers, linen fibers, wool fibers, in particular new wool fibers, and/or artificial (synthetic) fibers, i.e. for example plastic fibers, in particular polyamide fibers, polyester fibers, polypropylene fibers, viscose fibers, can be spun together to form the yarn to be produced.
  • synthetic fibers i.e. for example plastic fibers, in particular polyamide fibers, polyester fibers, polypropylene fibers, viscose fibers
  • the fibers can be continuous or staple fibers, depending on availability.
  • An (individual) fiber can also be made of or comprise at least two chemically and/or geometrically and/or physically different fiber materials.
  • An appropriate fiber accordingly also to be referred to as a blended fiber (blended roving), can accordingly be made e.g. of a first fiber material (roving material) and at least one further fiber material (roving material).
  • a first fiber material can be e.g. a natural fiber material, such as e.g. wool, and a further fiber material can be e.g. an artificial (synthetic) fiber material, such as e.g. polyamide, polyester or polypropylene.
  • the fibers can, as mentioned, be continuous or staple fibers, depending on availability.
  • the invention also relates to a yarn that is or has been produced by the described method, and to a textile product that is formed using a yarn produced by the described method or comprises at least one such yarn.
  • the textile product can be a semi-finished product (precursor) or a finished product (end product).
  • the invention furthermore relates to an apparatus for producing a yarn formed by spinning at least two individual fibers, in particular by a method as described. All the statements made in connection with the method therefore apply mutatis mutandis to the apparatus.
  • the apparatus comprises as essential components a guide device comprising a plurality of, in particular cylinder-like or cylindrical, guide elements, which is configured to guide a number of fibers to a spinning device arranged downstream thereof in the fiber guiding direction, and a spinning device arranged downstream of the guide device in the fiber guiding direction comprising at least one spindle element or bobbin element mounted rotatably around a spindle or bobbin axis, which is configured to spin together at least two of these fibers fed via the guide device, forming a yarn.
  • a guide device comprising a plurality of, in particular cylinder-like or cylindrical, guide elements, which is configured to guide a number of fibers to a spinning device arranged downstream thereof in the fiber guiding direction, and a spinning device arranged downstream of the guide device in the fiber guiding direction comprising at least one spindle element or bobbin element mounted rotatably around a spindle or bobbin axis, which is configured to spin together at least two of these fibers fed via the guide
  • the apparatus is distinguished by the fact that the guide device comprises at least two separate, in particular cylinder-like or cylindrical, guide elements arranged such that they are spatially separated from each other in at least one spatial direction or plane, via which the at least two fibers can be fed or are fed to the spinning device.
  • the guide device thus comprises at least two separate, in particular cylinder-like or cylindrical, guide elements arranged such that they are spatially separated from each other in at least one spatial direction or plane.
  • the guide device therefore comprises at least two last guide elements, which are typically arranged at the same level in relation to the spinning device but laterally offset from each other.
  • the apparatus can be formed as or can comprise e.g. a ring spinning machine or apparatus.
  • the spindle element or bobbin element of the spinning device is in particular arranged in alignment with a space formed between the guide elements by the spatially separated arrangement of the guide elements assigned thereto in the fiber guiding direction.
  • a respective spindle element or bobbin element of the spinning device is accordingly arranged with a lateral offset relative to the guide elements assigned thereto in relation to the fiber guiding direction; in particular, the spindle element or bobbin element, although separated from the guide elements in the fiber guiding direction, is arranged centrally between the guide elements assigned thereto.
  • the respective spindle elements or bobbin elements are each arranged in alignment with a space formed between the guide elements respectively assigned thereto by the spatially separated arrangement of the guide elements respectively assigned thereto in the fiber guiding direction.
  • the guide elements are in particular arranged at the same level in relation to the spinning device, but laterally offset from each other.
  • the apparatus therefore comprises in particular at least two guide elements arranged such that they are spatially separated from each other in a spatial direction or plane running transversely, optionally also at an angle, to the fiber guiding direction.
  • the apparatus comprises guide elements having a cylinder-like or cylindrical basic shape in each case, these are typically arranged coaxially and such that they are spatially separated from each other in the direction of their respective central axes.
  • Two guide elements arranged such that they are spatially separated from each other in a spatial direction or plane running transversely or at an angle to the fiber guiding direction can be referred to or considered as a guide element pair assigned to a specific spindle element or bobbin element, via which the fibers forming the yarn to be wound on the respective spindle element or bobbin element can be fed.
  • the apparatus comprises at least two guide elements arranged such that they are spatially separated from each other in a spatial direction running parallel to the fiber guiding direction or plane.
  • the apparatus [can] also comprise guide elements arranged such that they are offset in the fiber guiding direction.
  • the apparatus can comprise a drafting device, which is configured for the drafting, in particular longitudinal drafting, of the fibers fed to the spinning device.
  • the drafting device can be functionally and/or structurally integrated in the guide device.
  • different drafting regions or zones i.e. for example a pre-drafting zone and a main drafting zone, can be implemented, in which the fibers are drafted to different degrees.
  • FIGS. 1, 2 schematic diagrams of an apparatus for producing a yarn according to an exemplary embodiment
  • FIG. 3 an enlarged view of the detail III shown in FIG. 1 .
  • FIG. 4 an enlarged view of the detail IV shown in FIG. 2 .
  • FIG. 1 shows a schematic diagram of an apparatus 1 for producing a yarn 3 formed by spinning at least two individual fibers 2 a, 2 b according to an exemplary embodiment.
  • FIG. 1 represents a schematic top view of the apparatus 1 .
  • FIG. 3 shows an enlarged view of the detail III shown in FIG. 1 .
  • the apparatus 1 formed as or comprising e.g. a ring spinning machine comprises the following components: at least two fiber supply units 4 a, 4 b, a guide device 5 arranged downstream thereof in the fiber guiding direction indicated by the arrow P and a spinning device 6 arranged downstream of the guide device 5 in the fiber guiding direction.
  • the functional interaction of the aforesaid components of the apparatus 1 will be explained in more detail below:
  • the fiber supply units 4 a, 4 b which can be e.g. fiber bobbins, from which the fibers 2 a, 2 b to be spun into a yarn 3 within the framework of the method are unwound, the individual fibers 2 a, 2 b to be spun together to form the yarn 3 to be produced are provided.
  • the fibers 2 a, 2 b can also be referred to or considered as a roving or pre-yarn.
  • only two fiber supply units 4 a, 4 b are shown; however, the principle described below can be extended at will to more than two fiber supply units 4 a, 4 b and thus more than two fibers 2 a, 2 b.
  • the number of the fiber supply units 4 a, 4 b is determined according to the number of the fibers 2 a, 2 b to be spun into a yarn 3 according to the method.
  • the guide device 5 is configured to guide the provided fibers 2 a, 2 b to the spinning device 6 which is arranged downstream thereof in the fiber guiding direction.
  • the guide device 5 comprises a plurality of—five by way of example in each of the exemplary embodiments shown in the figures—guide elements 5 a - 5 e arranged consecutively in the fiber guiding direction, such that the fibers 2 a, 2 b to be guided can be guided from a first guide element 5 a to the further guide elements 5 b - 5 e arranged downstream thereof in the fiber guiding direction.
  • the first guide element 5 a in the fiber guiding direction is arranged immediately downstream of the respective fiber supply units 4 a, 4 b in the fiber guiding direction, and the last guide elements 5 d, 5 e in the fiber guiding direction are arranged immediately upstream of the spinning device 6 in the fiber guiding direction.
  • the last guide elements 5 d, 5 e in the fiber guiding direction are arranged immediately upstream of the spinning device 6 in the fiber guiding direction.
  • suitable, e.g. plate-like or plate-shaped, support elements 7 can be provided, which perform a desired supporting action for the fibers 2 a, 2 b to be guided.
  • an appropriate support element 7 is arranged by way of example between the first guide element 5 a and the fiber supply units 4 a, 4 b.
  • the guide elements 5 a - 5 e each have a cylinder-like or cylindrical geometric form or basic shape; the guide elements 5 a - 5 e can thus be referred to or considered as guide rollers or rolls or cylinders.
  • the guide elements 5 a - 5 e are each mounted rotatably around their axis of symmetry or central axis, such that a guided movement of the fibers 2 a, 2 b to be guided towards the spinning device 6 can be enabled by rotating movements of the guide elements 5 a - 5 e around their respective axis of symmetry or central axis.
  • a plurality of or all the guide elements 5 a - 5 e can be provided with a particular adhesive area or surface (not shown), achieved e.g. by a rubber coating, which allows a desired guiding of the fibers 2 a, 2 b owing to an adhesive effect exerted on the fibers 2 a, 2 b, i.e. in particular impeding or preventing an undesirable lateral slipping of the fibers 2 a, 2 b in terms of the fiber guiding direction.
  • FIGS. 1, 3 furthermore—the same applies to the exemplary embodiment shown in FIGS. 2, 4 —(optional) drafting elements (condensers) 8 a, 8 b, 9 a, 9 b of an unspecified drafting device are illustrated.
  • the fibers 2 a, 2 b can therefore be fed to the spinning device 6 with a pre-tension generated by a drafting, in particular longitudinal drafting, of the fibers 2 a, 2 b.
  • the drafting elements 8 a, 8 b, 9 a, 9 b can be drafting elements that have been structurally modified especially for the method described herein, which allow a guiding or drafting of the fibers 2 a, 2 b as required for the method described herein.
  • the spinning device 6 is configured to spin together the fibers 2 a, 2 b fed thereto via the guide device 5 , forming a yarn 3 .
  • the spinning device 6 comprises a spindle element or bobbin element 10 mounted rotatably around a spindle or bobbin axis (not shown), on which the yarn 3 can be wound.
  • a thread guide or monitor 16 is provided upstream of the spindle element or bobbin element 10 in the exemplary embodiments shown in the figures.
  • the apparatus 1 is distinguished by the fact that the guide device 5 comprises at least two separate guide elements 5 d, 5 e arranged such that they are spatially separated from each other in at least one spatial direction, via which the fibers 2 a, 2 b can be fed or are fed to the spinning device 6 .
  • the guide elements 5 d, 5 e are the last guide elements 5 d, 5 e before the spinning device 6 in the fiber guiding direction.
  • the guide elements 5 d, 5 e are arranged at the same level in relation to the spinning device 6 , but laterally offset from each other (see in particular FIG. 3 ).
  • a method of producing a yarn 3 having improved yarn properties formed by spinning two fibers 2 a, 2 b can be implemented.
  • An exemplary embodiment of such a method is described in more detail below.
  • the individual fibers 2 a, 2 b to be spun together to form the yarn 3 to be produced are provided via the fiber supply units 4 a, 4 b.
  • the provided fibers 2 a, 2 b are fed to the spinning device 6 via the guide device 5 .
  • the fibers 2 a, 2 b fed to the spinning device 6 are spun in the spinning device 6 , forming the yarn 3 to be produced.
  • the spinning of the fibers 2 a, 2 b takes place in a spinning region 11 following the last guide elements 5 d, 5 e.
  • the produced yarn 3 is wound on to the spindle element or bobbin element 10 .
  • the fibers 2 a, 2 b to be spun into a yarn 3 are fed to the spinning device 6 via two separate guide elements 5 d, 5 e arranged such that they are spatially separated from each other in a spatial direction.
  • the figures show that a first fiber 2 a to be spun to form the yarn 3 is fed to the spinning device 6 via a first guide element 5 d and a second fiber 2 b to be spun with the first fiber 2 b to form the yarn 3 is fed to the spinning device 6 via a second guide element 5 e arranged such that it is separated from the first guide element 5 d.
  • a guide device 5 which comprises at least two separate guide elements 5 d, 5 e arranged such that they are spatially separated from each other in a spatial direction immediately before the spinning device 6 .
  • the guide elements 5 d, 5 e are, as mentioned, arranged at the same level in relation to the spinning device 6 , i.e. at the same distance from the spinning device 6 , but laterally offset from each other.
  • the guide elements 5 d, 5 e have a cylinder-like or cylindrical geometric form or basic shape, in the exemplary embodiments shown in the figures they are arranged coaxially and such that they are spatially separated from each other in the direction of their respective central axes and thus separated from each other in a spatial direction running transverse to the fiber guiding direction in a parallel arrangement.
  • Two guide elements 5 d, 5 e arranged such that they are spatially separated from each other in a spatial direction running transverse to the fiber guiding direction can be referred to or considered as a guide element pair assigned to a particular spindle element or bobbin element 10 , via which the fibers 2 a, 2 b forming the yarn 3 to be wound on the respective spindle element or bobbin element 10 are fed.
  • the fiber merging point 12 represents part of a so-called spinning triangle.
  • the fiber merging point 12 forms an apex of the spinning triangle facing the spinning device 6 .
  • the shape of the spinning triangle can therefore also be modified according to the method, compared to conventional methods, since the spinning triangle is “stretched” in the fiber guiding direction owing to the aforementioned increasing of the free length L of the fibers 2 a, 2 b, forming the sides of the spinning triangle.
  • the angle ⁇ of the spinning triangle in the region of the apex facing the spinning device 6 is less than 90°, in particular less than 45° and in particular less than 30°. Accordingly, the angle a between the fibers 2 a, 2 b after leaving the guide elements 5 d, 5 e is less than 90°, in particular less than 45° and in particular less than 30°.
  • the angle ⁇ is accordingly an acute angle.
  • the method is based on the finding that, by influencing, i.e. in particular increasing, the free length L of the fibers 2 a, 2 b to be spun between leaving the guide device 5 , i.e. the last guide elements 5 d, 5 e, and the fiber merging point 12 , specific, in particular mechanical, properties of the yarn 3 that is to be or has been produced can be obtained.
  • This results in particular from the fact that the free length L of the fibers 2 a, 2 b to be spun is increased (significantly) before the fiber merging point 12 compared to conventional methods.
  • the (individual) fibers 2 a, 2 b can already be twisted (considerably) before the fiber merging point 12 , which has a positive impact on the properties of the yarn 3 that is to be or has been produced.
  • the free length L of a respective fiber 2 a, 2 b between the guide device 5 and the merging point 12 at which the fibers 2 a, 2 b are brought together can be e.g. in a range of between 4 and 20 cm, in particular in a range of between 7.5 and 15 cm and preferably 10 cm.
  • the free length L′ between respective points 14 , 15 at which the fibers 2 a, 2 b leave the respective guide element 5 d, 5 e in the direction of the merging point 12 can be e.g. in a range of between 4 and 10 cm, in particular between 5 and 9 cm and preferably at least approx. 6 cm.
  • a spinning device 6 is used according to the method, of which the spindle element or bobbin element 10 is arranged in alignment with a space 13 formed between the guide elements 5 d, 5 e by the spatially separated arrangement of the guide elements 5 d, 5 e assigned thereto in the fiber guiding direction.
  • the spindle element or bobbin element 10 is accordingly laterally offset (in relation to the fiber guiding direction) relative to the guide elements 5 d, 5 e assigned thereto; in particular, the spindle element or bobbin element 10 , although separated from the guide elements 5 d, 5 e in the fiber guiding direction, is arranged centrally between the guide elements 5 d, 5 e assigned thereto.
  • FIG. 3 finally, it is indicated by dashed fibers that, in principle, further fibers (dashed) can also be guided via a respective last guide element 5 d, 5 e, but these are fed to another spindle element or bobbin element (not shown), i.e. typically a further spindle element or bobbin element arranged parallel to the spindle element or bobbin element 10 , i.e. to another spinning region, of the spinning device 6 . It also applies to this other spinning region that the fibers to be spun there into a yarn 3 are fed via separate guide elements in the same way as in the figures.
  • FIG. 2 shows a schematic diagram of an apparatus 1 for producing a yarn 3 formed by spinning at least two individual fibers 2 a, 2 b according to a further exemplary embodiment.
  • FIG. 2 represents a schematic top view of the apparatus 1 .
  • FIG. 4 shows an enlarged illustration of the detail IV shown in FIG. 2 .
  • At least three fibers 2 a - 2 c are spun together to form the yarn 3 .
  • the at least three fibers 2 a - 2 c are brought together at the fiber merging point 12 .
  • Yarns 3 can therefore be produced from more than two fibers 2 a - 2 c (multi-fiber yarns).
  • the spinning of at least three fibers 2 a - 2 c to form a yarn 3 can, as shown in FIGS. 2, 4 , be implemented such that at least two fibers 2 a, 2 c are fed to the spinning device 6 jointly via a first guide element 5 d and at least one further fiber 2 b is fed via a further guide element 5 e arranged such that it is spatially separated from the first guide element 5 d in a spatial direction. At least two fibers 2 a, 2 c can thus be fed via a first guide element 5 d and at least one further fiber 2 b via a further guide element 5 e. In this context, even or uneven divisions of fibers 2 a - 2 c over a given number of guide elements are possible.
  • two fibers can be fed via a first guide element 5 d and two fibers via a second guide element 5 e or three fibers via a first guide element 5 d and one fiber via a second guide element 5 e.
  • the spinning of at least three fibers 2 a - 2 c according to the method could alternatively also be implemented such that the at least three fibers 2 a - 2 c are fed to the spinning device 6 via three separate guide elements, arranged such that they are separated from each other in at least one spatial direction, by feeding at least one first fiber 2 a via a first guide element, at least one second fiber 2 b via a second guide element arranged such that it is spatially separated from the first guide element in at least one spatial direction and at least one third fiber 2 c via a third guide element arranged such that it is spatially separated from the second guide element in at least one spatial direction.
  • Each fiber 2 a - 2 c can thus also be fed via a separate guide element.
  • FIG. 4 it is indicated that it is also possible within the framework of the method that at least two fibers 2 a - 2 c and at least one filament 17 are spun together to form the yarn 3 .
  • the at least two fibers 2 a - 2 c and the at least one filament 17 are brought together at the fiber merging point 12 .
  • Yarns 3 can therefore be produced from at least two fibers 2 a - 2 c and at least one filament 17 .
  • the spinning of at least two fibers 2 a - 2 c and at least one filament 17 according to the method can be implemented such that at least two fibers 2 a - 2 c are fed to the spinning device 6 via two separate guide elements 5 d, 5 e, arranged such that they are separated from each other in a spatial direction and the at least one filament 17 is fed from a filament storage unit 18 , in particular a spool-like or spool-shaped filament storage unit 18 , such as e.g. a filament bobbin, or via a third guide element separate from the two separate guide elements 5 d, 5 e.
  • a filament storage unit 18 in particular a spool-like or spool-shaped filament storage unit 18 , such as e.g. a filament bobbin, or via a third guide element separate from the two separate guide elements 5 d, 5 e.
  • guide elements 5 d, 5 e such that they are spatially separated from each other in a spatial direction running transverse to the fiber guiding direction
  • at least two guide elements 5 d, 5 e arranged such that they are spatially separated from each other in a spatial direction running parallel to the fiber guiding direction are used.
  • guide elements 5 d, 5 e arranged such that they are offset in the fiber guiding direction can also be used.
  • fibers 2 a, 2 b with identical and non-identical chemical and/or geometric and/or physical, in particular mechanical, properties can be spun together to form the yarn 3 .
  • all the natural fibers i.e. for example alpaca fibers, cotton fibers, cashmere fibers, mohair fibers, silk fibers, linen fibers, wool fibers, in particular new wool fibers, and/or artificial (synthetic) fibers, i.e. for example plastic fibers, in particular polyamide fibers, polyester fibers, polypropylene fibers or viscose fibers, can be spun together to form the yarn to be produced.
  • blends of (individual or a plurality of) natural and (individual or a plurality of) artificial fibers are also possible.
  • the fibers can be continuous or staple fibers, depending on availability.
  • An (individual) fiber 2 a, 2 b can also be made of or comprise at least two chemically and/or geometrically and/or physically different fiber materials.
  • a corresponding fiber 2 a, 2 b accordingly also to be referred to as a blended fiber (blended roving), can accordingly be made of e.g. a first fiber material (roving material) and at least one further fiber material (roving material).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US16/629,542 2017-10-23 2018-09-25 Method and apparatus for producing a yarn Abandoned US20200173061A1 (en)

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DE102017124659.2A DE102017124659B3 (de) 2017-10-23 2017-10-23 Verfahren und Vorrichtung zur Herstellung eines Garns
DE102017124659.2 2017-10-23
PCT/EP2018/075968 WO2019081144A1 (de) 2017-10-23 2018-09-25 Verfahren und vorrichtung zur herstellung eines garns

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CN111032935B (zh) 2022-10-11
DE102017124659B3 (de) 2019-02-07
BR112020000237A2 (pt) 2020-07-07
PT3701070T (pt) 2023-11-17
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DK3701070T3 (da) 2023-11-06
MX2020000210A (es) 2020-07-22
CL2020000008A1 (es) 2020-07-24
EP3701070A1 (de) 2020-09-02
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AU2018356200A1 (en) 2020-01-16
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CN111032935A (zh) 2020-04-17
ES2963158T3 (es) 2024-03-25
RU2750553C2 (ru) 2021-06-29
ZA201908405B (en) 2023-10-25
KR20200040698A (ko) 2020-04-20
LT3701070T (lt) 2023-11-27
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PL3701070T3 (pl) 2024-02-19
JP2022071040A (ja) 2022-05-13

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