JP7425815B2 - Yarn manufacturing method - Google Patents

Description

The present invention relates to a method for manufacturing yarn.

Methods for manufacturing yarns are known in principle from the prior art in a wide variety of different embodiments.

A known method for the production of yarns formed by spinning at least two individual fibers, carried out for example as a ring spinning process, comprises the following steps: In order to form the yarn produced, spinning is performed. providing at least two individual fibers of the type provided and at least one spindle element of the provided at least two fibers, in particular using a guiding device comprising a cylindrical or cylindrical guiding element; a step of supplying the fibers to a spinning device provided therein; and a step of spinning the supplied fibers in the spinning device to form a manufactured yarn.

While the corresponding yarn manufacturing methods are better understood with respect to the influence of the yarn properties that can be produced thereby, there is nevertheless a continuous development of methods that allow the production of yarns with improved properties. There is a need to. In particular, means are provided which make it possible to produce yarns with improved properties with respect to the formation of so-called neps (knops, burls), i.e. yarns with a low tendency to form neps or yarns with low fuzz. need to be developed.

The invention relates in particular to the production of threads with improved properties and is based on the object of providing an improved method for producing threads.

This object is achieved by the method according to claim 1. The claims dependent on this claim 1 relate to possible embodiments of this method.

Generally, the methods described herein are useful for producing at least one thread. Naturally, in a corresponding manner, multiple threads can also be produced by the method.

The method comprises three essential steps, which are explained in detail below. In the first step of the method, at least two individual fibers are provided and the fibers are spun together to form the manufactured yarn. These fibers may be staple fibers, for example. These fibers may be referred to or considered roving or pre-yarn. Thus, when "fibers" are referred to herein, it may be understood that the "fibers" mean rovings or preyarns. In any case, these fibers may be supplied using a fiber supply unit, for example a fiber bobbin, from which they are spun into yarn within the framework of the method. The fibers are unraveled. The number of these fiber supply units is usually determined according to the number of fibers spun into yarn by the method.

In a second step of the method, the provided at least two fibers are fed using a guiding device comprising a plurality of guiding elements to a spinning device comprising at least one spindle element or bobbin element. Ru. In the second step of the method, these fibers, which are to be spun into yarn, are therefore fed to the spinning device using a guiding device. This guide device usually comprises a plurality of guide elements. These guiding elements are usually arranged successively in the fiber guiding direction, from a first guiding element to another guiding element arranged downstream of the first guiding element in the fiber guiding direction. This allows the fibers to be guided. A first guiding element of the guiding device in the fiber guiding direction is arranged immediately downstream of the respective fiber supply unit in the fiber guiding direction. The last guiding element in the fiber guiding direction is arranged immediately upstream of the spinning device in the fiber guiding direction. Suitable support elements, e.g. in the form of plates or discs, may be provided between guiding elements which are spaced apart in the guiding direction of the fibres, but which are arranged one after the other in the guiding direction of the fibres, for example in the form of plates or discs; The support element exerts a desired support effect on the guided fibers. Suitable support elements may also be arranged, for example between the first guide element and the fiber supply unit.

Typically, each guide element has a cylindrical or cylindrical geometry or basic shape. These guiding elements may therefore also be referred to or considered as guide rollers or guide rolls or cylinders. Typically, each cylindrical or cylindrical guide element is mounted rotatably about an axis of symmetry or central axis of these guiding elements, about which each of these axes of symmetry or central axis the guiding element rotates. This movement allows a guided movement of the fibers which are guided in the direction of the spinning device.

Individual, several or all guiding elements may be provided with a specific adhesive area or a specific adhesive surface, for example realized by a rubber coating, which adhesive area or adhesive surface is provided for the adhesive effect exerted on the fibers. The adhesive surface enables the desired guidance of the fibers, ie prevents or prevents undesired slippage of the fibers, in particular in the transverse direction, with respect to the direction of guidance of the fibers.

In the third step of the method, the fibers fed to the spinning device are spun in this device to form the manufactured yarn. Typically, the spinning of the fibers to form the yarn to be produced takes place in a spinning area following the last guiding element. The spinning device includes at least one spindle element or bobbin element, on which fibers that are spun together or yarn formed by spinning these fibers are wound. . This spindle element or bobbin element may be a bobbin or a cop. The number of spindle elements or bobbin elements or the number of spinning areas produced by them is determined according to the number of yarns produced.

According to the method, in contrast to conventional methods, one (common) guiding element is not used, but at least two individual, in particular cylindrical or cylindrical, guiding elements are used to carry out the spinning. At least two fibers to be threaded are fed to a spinning device, and the at least two guiding elements are arranged spatially apart from each other in at least one spatial direction. In other words, the first fibers to be spun to form the yarn to be manufactured are fed to the spinning device using the first guiding element and are spun together with the first fibers to form the yarn to be manufactured. A second fiber is fed to the spinning device using a second guide element, which is arranged to be spaced apart from the first guide element in at least one spatial direction.

Therefore, within the framework of the present method, a guiding device is used which comprises at least two individual, in particular cylindrical or cylindrical, guiding elements, which guide elements are located directly upstream of the spinning device and mutually disposed in at least one spatial direction. They are placed so that they are spatially separated from each other. The guide device used within the framework of the method therefore comprises at least two final guide elements. As shown below, these guide elements are usually arranged at the same level with respect to the spinning device, i.e. at the same distance from this spinning device, while being laterally offset from each other. and placed. At least two fibers are fed into the spinning device using at least two separate guiding elements, and the at least two fibers are separated from each other in at least one spatial direction immediately before being brought together at the confluence of the fibers. It can be understood from the above description that the Starting from the guiding device by supplying the fibers to be spun into yarn using at least two individual guiding elements arranged spatially apart from each other in at least one spatial direction. can influence the free length of the fibers that are spun into yarn between the point of confluence of the fibers where they are brought together, i.e. can in particular increase the free length of the fibers; This has a positive effect on the properties of the yarn being produced or the properties of the yarn produced. The increase in the free length of these fibers means that when the fibers are fed using individual guiding elements, the fiber confluence where these fibers are brought together is relatively far away from the final guiding element. This is due to the fact that the confluence point is therefore very close to the spinning device.

Usually, the confluence of corresponding fibers represents part of a so-called spinning triangle. The confluence of the fibers in this case usually forms the apex of the spinning triangle facing the spinning device. Therefore, due to the aforementioned increase in the free length of the fibers forming the sides of this spinning triangle, the spinning triangle is "stretched" in the fiber guiding direction, so that the shape of this spinning triangle is different from that in the conventional method. may be modified according to the method compared with.

The method comprises the steps from leaving the guiding device, i.e. leaving the respective final guiding element (from the fiber point of view), to the fiber confluence where these fibers are brought together and are spun into yarn. By influencing the free length of the fibers, in particular by increasing the free length of the fibers, it is possible to obtain certain properties, in particular mechanical properties, of the yarn produced or of the yarn produced. It is based on the discovery that This results in particular from the fact that, compared to conventional methods, the free length of the fibers that are spun into yarn increases (significantly) before the fiber confluence. The (individual) fibers may already be (significantly) twisted before the fiber confluence, which favorably influences the properties of the yarn produced or the properties of the produced yarn. There is. Studies have shown that with such a method it is possible to reduce, among other things, the formation of so-called neps (knobs, burrs). Therefore, yarns produced according to the present method have a (significantly) lower tendency to form neps and a (significantly) lower hairiness. Thus, yarns with improved properties can be produced by this method.

The free length of each fiber between the guiding device and the confluence point may, for example, range between approximately 4 and 20 cm, in particular between 7.5 and 15 cm, with 10 cm being preferred. . In particular, particularly advantageous fiber properties can be obtained from fiber lengths of at least 4 cm, especially from fiber lengths of at least 6 cm. However, in principle exceptions above and below these numbers are possible.

According to this method, in particular a spinning device is used, in which the spindle or bobbin elements of the spinning device are separated by a spatially separated arrangement of the assigned guiding elements in the fiber guiding direction between these guiding elements. are arranged in alignment with the space formed in the This spindle element or bobbin element is therefore arranged offset transversely to the fiber guiding direction in relation to the assigned guiding element. In particular, this spindle element or bobbin element is spaced apart from the guiding elements in the fiber guiding direction, while being arranged centrally between the guiding elements assigned to it. The same applies to spinning a plurality of yarns each consisting of at least two fibers. In this case, due to the spatially separated arrangement of the respective assigned guiding elements in the direction of fiber guidance, the respective spindle element or bobbin element has a space formed between the respective assigned guiding elements. are arranged in a row.

As mentioned above, the guide elements are usually arranged at the same level with respect to the spinning device, while being laterally offset with respect to each other. Therefore, within the framework of the present method, the fibers may be arranged spatially apart from each other in the spatial direction or transversely to the guidance direction of the fibers, optionally at an angle, and spaced apart from each other in the extending plane. In particular, at least two guide elements are used which are arranged in such a way that they are spaced apart. If guide elements each having a cylindrical or cylindrical basic shape are used, these guide elements are usually arranged coaxially and spatially disposed relative to each other in the direction of the central axis of the respective guide element. placed so that they are separated. arranged spatially apart from each other in the spatial direction, or transversely or obliquely to the guiding direction of the fibers, arranged spatially apart from each other in the extending plane. The two guide elements may be referred to or considered as a pair of guide elements assigned to a particular spindle or bobbin element. The pair of guide elements is used to feed the fibers forming the thread that is wound onto the respective spindle or bobbin element.

The free length between the respective points at which the respective fibers leave the respective guiding element in the direction of the confluence may, for example, be in the range between 4 and 10 cm, in particular in the range between 5 and 9 cm. 6 cm is preferable. However, in principle exceptions above and below these numbers are possible.

arranged spatially apart from each other in the spatial direction, or transversely or obliquely to the guiding direction of the fibers, arranged spatially apart from each other in the extending plane. In addition to the described use of the arrangement of guiding elements, alternatively or additionally, at least in principle, mutually in spatial directions extending parallel to the guiding direction of the fibers or to the plane in which the fibers are guided. It is also possible to use at least two guiding elements arranged spatially apart. Therefore, at least in principle, guide elements may also be used which are arranged offset in the direction of guide of the fibers.

As previously described, these fibers are brought together at the fiber confluence. As also mentioned above, this fiber confluence typically forms the apex of the spinning triangle facing the spinning device. The angle of the spinning triangle in the region of the apex facing the spinning device usually ranges from 0 to 90° or from 1 to 90°. In particular, the angle is less than 90°, especially less than 45°, especially less than 30°. The angle between the at least two fibers after leaving the respective guiding element is therefore usually in the range 0 to 90° or in the range 1 to 90°. In particular, the angle is less than 90°, especially less than 45°, especially less than 30°. Therefore, the angle is usually an acute angle.

Within the framework of the method, it is also possible for at least three fibers to be spun together to form a thread. These at least three fibers are typically brought together at a fiber confluence. The yarn may therefore be made from more than two fibers (multi-fiber yarns).

By spinning at least three fibers to form a yarn according to the method, at least two fibers are fed together into the spinning device using a first guiding element and in at least one spatial direction or plane. It can be carried out that at least one further fiber is supplied using a further guiding element arranged spatially apart from the first guiding element. Thus, a first guiding element can be used to supply at least two fibers and a further guiding element can be used to supply at least one further fiber. In this context, it is possible to divide the fibers equally or unevenly into a given number of guiding elements, with an example of a supply of four fibers and an example number of two guiding elements. , two fibers are fed from the first guiding element and two fibers are fed from the second guiding element, or three fibers are fed from the first guiding element, and One fiber is fed from the second guiding element.

Alternatively, according to the method, spinning at least three fibers to form a yarn is accomplished by such that the at least three fibers are fed to the spinning device using three separate guiding elements. The three individual guiding elements may be arranged to be spaced apart from each other in at least one spatial direction or plane, and the at least one first fiber is fed using the first guiding element. , at least one second fiber is provided with a second guiding element arranged spatially spaced from said first guiding element in at least one spatial direction or plane; A third fiber of is provided using a third guide element arranged spatially separated from the second guide element in at least one spatial direction or plane. As a result, each fiber may also be fed using a separate guiding element.

Within the framework of the method, at least two fibers and at least one filament, which may be a single filament or a multifilament, can also be spun together to form a yarn. Typically, these at least two fibers and the at least one filament are brought together at a fiber confluence. The yarn may thus be made from at least two fibers and at least one filament. A suitable filament may be a continuous filament. Suitable filaments may be made of or may include an elastic filament material. The filaments may be elastane (sometimes referred to as Lycra), polyamide, polyester or polypropylene filaments, for example.

Spinning at least two fibers and at least one filament according to the method is carried out by such that the at least two fibers are fed to the spinning device using two separate guiding elements. the two individual guiding elements may be arranged in such a way that they are spaced apart from each other in at least one spatial direction or plane, and the at least one filament is, for example, a filament bobbin, in particular a spool. from a (separate) filament storage unit in shape or spool shape, or the at least one filament is fed by means of a third guiding element which is separate from the two aforementioned individual guiding elements. I try to do that.

Naturally, at least two fibers can be fed into the spinning device with a pretension created by drafting the fibers, in particular by drafting the fibers in the longitudinal direction. The same applies to the supplied filament. Particularly in this case, it is possible to incorporate different traction areas or different traction sections, for example a pre-draft section and a main draft section, in which the fibers and/or filaments are subjected to different degrees of traction. is recieving.

Within the framework of the method, fibers with identical and non-identical chemical and/or geometrical and/or physical properties, in particular mechanical properties, may be spun together to form a yarn. . Therefore, if the fibers are not identical, the fibers spun according to the method have at least one chemical property point, i.e. and/or in at least one geometrical property, i.e. at least one property related in particular to the geometry of the fiber, such as, for example, the diameter of the fiber. and/or may differ in terms of at least one physical property, in particular mechanical property, i.e. in particular in terms of physical properties, in particular mechanical properties, of the fiber, such as, for example, the strength of the fiber. They may differ in at least one property.

At present, in principle, within the framework of the present method, all natural fibers, such as, for example, alpaca fibers, cotton fibers, cashmere fibers, mohair fibers, silk fibers, hemp fibers, wool fibers, in particular new wool fibers, etc. and/or all synthetic fibers, i.e. for example plastic fibers, especially polyamide fibers, polyester fibers, polypropylene fibers, viscose fibers, etc., may be spun together to form the produced yarn. , should be discussed in general. In particular, it is also possible to combine natural and chemical fibers. These fibers may be continuous or staple fibers, depending on availability.

The (individual) fibers may be made of or may comprise at least two chemically and/or geometrically and/or physically different fiber materials. Thus, suitable fibers, also referred to as blended rovings, may for example be made of a first fiber material (roving material) and at least one further fiber material (roving material). good. This first fiber material may be, by way of example, a natural fiber material, such as wool, and the further fiber material may be, for example, a synthetic fiber, such as polyamide, polyester or polypropylene. Good too. As previously mentioned, these fibers may be continuous or staple fibers, depending on availability.

In addition to methods, the present invention also relates to yarns made or being made by the methods described, and to textile products formed using the yarns manufactured by the methods described. or to textile products comprising at least one yarn produced in this way. This textile product may be a semi-finished product (precursor) or a finished product (final product).

The invention furthermore relates to a device for the production of yarns formed by spinning at least two individual fibers according to the method specifically described. Therefore, all statements made in connection with this method apply mutatis mutandis to this apparatus.

The production device comprises, as essential components, a guiding device having a plurality of guiding elements, in particular cylindrical or cylindrical, and at least one spindle element or a spinning device comprising a bobbin element, the guiding device configured to guide a number of fibers to a spinning device arranged downstream of the guiding device in the fiber guiding direction, the spinning device comprising a bobbin element or a bobbin element is mounted rotatably about a spindle axis or a bobbin axis such that the spinning device spins together at least two of these fibers fed using the guide device to form a yarn; It is composed of

The manufacturing device is characterized in that the guiding device comprises at least two individual, in particular cylindrical or cylindrical, guiding elements which are spatially separated from each other in at least one spatial direction or plane. It is distinguished by the fact that it is arranged and that with said guide element at least two fibers can be fed into the spinning device or are fed into the spinning device. This guide device thus comprises at least two individual, in particular cylindrical or cylindrical, guide elements arranged spatially apart from each other in at least one spatial direction or plane. As a result, this guiding device comprises at least two last guiding elements, which are normally arranged at the same level with respect to the spinning device, but which are laterally offset from one another.

The production device may be designed, for example, as a ring spinning frame or a ring spinning device or may include a ring spinning frame or a ring spinning device.

The spindle element or bobbin element of the spinning device is preferably arranged in alignment with the space created between the guiding elements by the spatially separated arrangement of the guiding elements assigned to the guiding direction of the fibers. The respective spindle element or bobbin element of this spinning device is therefore arranged laterally offset with respect to the assigned guiding element with respect to the guiding direction of the fibers. In particular, the spindle element or bobbin element is spaced apart from the guiding elements in the fiber guiding direction, while being centrally arranged between the guiding elements assigned to them. The same applies to spinning multiple yarns each from at least two fibers. In this case, each spindle element or bobbin element, due to the spatially separated arrangement of the respective assigned guiding elements in the direction of fiber guidance, respectively fills the space formed between the respective assigned guiding elements. arranged in alignment.

In this way, as already mentioned above in connection with the method, the free length of the fibers to be spun into yarn is increased between leaving the guiding device and the fiber confluence where the fibers are brought together. This has a positive influence on the properties of the yarn produced or the properties of the yarn produced. The production apparatus can therefore be used to produce yarns with improved properties.

As mentioned above, these guide elements are arranged in particular at the same level with respect to the spinning device, while being laterally offset with respect to each other. As a result, the production apparatus preferably comprises at least two guiding elements which are arranged spatially apart from each other in the spatial direction or transversely to the guiding direction of the fibers. , optionally obliquely, are arranged spatially separated from each other in the plane in which they extend. In any case, if the manufacturing apparatus comprises guide elements having a cylindrical or cylindrical basic shape, these guide elements are usually arranged coaxially and in the direction of the central axis of the respective guide element. , are arranged so as to be spatially separated from each other. arranged to be spatially separated from each other in the spatial direction, or transversely or obliquely to the guiding direction of the fibers, and arranged spatially separated from each other in the extending plane. The two guiding elements may be referred to or considered as a pair of guiding elements assigned to a particular spindle element or bobbin element. The pair of guide elements may be used to feed the fibers forming the thread that is wound onto the respective spindle or bobbin element.

Alternatively or additionally, at least two fibers are arranged spatially separated from each other in a spatial direction extending parallel to the guiding direction of the fiber or to the plane in which the fiber is being guided, at least in principle. It is also possible for the manufacturing device to have two guiding elements. It is therefore possible, at least in principle, for the production device to also include guiding elements arranged so as to be offset in the guiding direction of the fibers.

The production device may include a traction device, which is configured for traction of the fibers fed to the spinning device, in particular for longitudinal traction of the fibers. This traction device may be functionally and/or structurally integrated into the guide device. With this traction device it is possible to incorporate different traction areas or different traction sections, for example a pre-draft section and a main draft section, in which the fibers are subjected to different degrees of traction. .

The invention is explained in more detail using exemplary embodiments in the drawings. The drawing shows:
1 is a schematic diagram of a yarn manufacturing apparatus according to an exemplary embodiment; FIG. 1 is a schematic diagram of a yarn manufacturing apparatus according to an exemplary embodiment; FIG. 2 is an enlarged view of detail III shown in FIG. 1; FIG. 3 is an enlarged view of detail IV shown in FIG. 2; FIG.

FIG. 1 shows a schematic diagram of an apparatus 1 for producing a yarn 3 formed by spinning at least two individual fibers 2a, 2b, according to an exemplary embodiment. FIG. 1 shows a schematic plan view of a manufacturing apparatus 1. As shown in FIG. FIG. 3 shows an enlarged view of detail III shown in FIG.

The manufacturing device 1, which is designed for example as a ring spinning frame or is equipped with a ring spinning frame, has the following components: at least two fiber feed units 4a, 4b, indicated by the arrow P. A guide device 5 disposed downstream in the fiber guide direction P, and a spinning device 6 disposed downstream of the guide device 5 in the fiber guide direction P. The functional complementarity of the aforementioned components of the manufacturing device 1 will be explained in more detail below.

The fibers 2a, 2b that are spun into a yarn 3 within the framework of the method are unwound by means of a fiber supply unit 4a, 4b, which may for example be a fiber bobbin, to separate the individual fibers that are spun together to form the yarn 3. Fibers 2a and 2b are supplied. The fibers 2a, 2b may also be referred to or considered as rovings or preyarns. In this exemplary embodiment, only two fiber supply units 4a, 4b are shown, just as an example. However, the principles described below may optionally be extended to more than two fiber supply units 4a, 4b and thus to more than two fibers 2a, 2b. The number of fiber supply units 4a, 4b is determined according to the number of fibers 2a, 2b spun into yarn 3 by the method.

The guide device 5 is configured to guide the supplied fibers 2a, 2b to a spinning device 6, and the spinning device 6 is arranged downstream of the guide device 5 in the fiber guiding direction P. For this purpose, the guiding device 5 comprises a plurality (in each exemplary embodiment shown in the figures, five by way of example) of guiding elements 5a to 5e arranged in succession in the guiding direction P of the fibers. , allowing the guided fibers 2a, 2b to be guided from the first guiding element 5a to further guiding elements 5b to 5e arranged downstream thereof in the fiber guiding direction P. A first guide element 5a in the fiber guide direction P is arranged immediately downstream of the respective fiber supply unit 4a, 4b in the fiber guide direction P, and a last guide element 5d, 5e in the fiber guide direction P It is arranged immediately upstream of the spinning device 6 in the fiber guiding direction P. Suitable support elements 7, for example plate-shaped or disk-shaped, are provided between guide elements 5a to 5e which are spaced apart in the fiber guiding direction P and which are arranged one after the other (immediately) in the fiber guiding direction. The supporting element 7 exerts the desired supporting effect on the guided fibers 2a, 2b. In the exemplary embodiment shown in the figures, a suitable support element 7 is arranged, by way of example, between the first guide element 5a and the fiber supply unit 4a, 4b.

Each guide element 5a-5e has a cylindrical or cylindrical geometry or basic shape. These guide elements 5a to 5e may therefore be referred to or considered as guide rollers or guide rolls or cylinders. These guide elements 5a to 5e are mounted rotatably around a symmetry axis or central axis of the guide elements 5a to 5e, and the guide elements 5a to 5e rotate around each of these symmetry axes or central axes. This movement allows a guided movement of the fibers which are guided in the direction of the spinning device.

Each, several or all guiding elements 5a to 5e may be provided with a specific adhesive area or a specific adhesive surface (not shown), for example realized by a rubber coating, which allows the fibers 2a, 2b to Due to the adhesive effect exerted, the adhesive area or adhesive surface allows a desirable guidance of the fibers 2a, 2b, i.e. with respect to the guidance direction P of the fibers, in particular an unfavorable lateral direction of the fibers 2a, 2b. Prevents or prevents slipping.

Furthermore, in the exemplary embodiments shown in FIGS. 1 and 3 - although the same applies to the exemplary embodiments shown in FIGS. 2 and 4 - an unspecified traction device (optional) traction elements (capacitors) 8a, 8b, 9a, 9b are shown. As a result, the fibers 2a, 2b can be fed to the spinning device 6 with a pretension created by the traction of the fibers 2a, 2b, in particular by the longitudinal traction of the fibers 2a, 2b. In this case, with the different traction elements 8a, 8b, 9a, 9b it is possible to incorporate different traction areas or different traction sections, for example a pre-draft section and a main draft section, in which traction areas or traction sections The fibers 2a, 2b are subjected to different degrees of traction. These traction elements 8a, 8b, 9a, 9b may be traction elements that have been structurally modified in particular for the method described herein, and which meet the requirements of the method described herein. This makes it possible to guide or pull the fibers 2a, 2b as shown in FIG.

The spinning device 6 is configured to spin together the fibers 2a, 2b supplied using the guide device 5 to form the yarn 3. For this purpose, the spinning device 6 is provided with a spindle or bobbin element 10 which is rotatably mounted around a spindle axis or a bobbin axis (not shown) and The thread 3 may be wound onto a spindle element or a bobbin element. In the exemplary embodiment shown in the figures, a thread guide or thread monitoring device 16 is provided upstream of the spindle element or bobbin element 10 .

As can be understood using these drawings, in the present manufacturing apparatus 1, the guiding device 5 includes at least two individual guiding elements 5d, 5e, and the guiding elements 5d, 5e are spaced apart from each other in at least one spatial direction. It is distinguished by the fact that with said guiding elements 5d, 5e at least two fibers 2a, 2b can be fed to the spinning device 6 or can be fed to the spinning device 6. Ru. It can be seen that these guiding elements 5d, 5e are the last guiding elements 5d, 5e before the spinning device 6 in the fiber guiding direction P. These last guide elements 5d, 5e are arranged at the same level with respect to the spinning device 6, while being laterally offset with respect to each other (see especially FIG. 3).

Using the manufacturing apparatus 1 shown in these figures, it is possible to realize a method for manufacturing a yarn 3 having improved yarn properties, which is formed by spinning two fibers 2a, 2b. Exemplary embodiments of such methods are described in more detail below.

In a first step of the method, the individual fibers 2a, 2b, which are spun together to form the yarn 3 to be manufactured, are fed using a fiber feeding unit 4a, 4b.

In a second step of the method, the fed fibers 2a, 2b are fed to a spinning device 6 using a guiding device 5.

In the third step of the method, the fibers 2a, 2b fed to the spinning device 6 are spun in the spinning device 6 to form the yarn 3 produced. Spinning of the fibers 2a, 2b takes place in a spinning region 11 next to the last guide elements 5d, 5e. The produced thread 3 is wound onto a spindle or bobbin element 10.

According to the method, two fibers 2a, 2b to be spun into a yarn 3 are fed to a spinning device 6 using two individual guide elements 5d, 5e. , 5e are arranged so as to be spatially separated from each other in the spatial direction. These figures show that the first fibers 2a to be spun to form the yarn 3 are fed into the spinning device 6 using the first guiding element 5d and together with the first fibers 2a to form the yarn 3. The second fiber 2b to be spun is fed to the spinning device 6 using a second guide element 5e, which is arranged so as to be separated from the first guide element 5d. It is shown that.

Therefore, within the framework of the method, a guide device is used which comprises at least two individual guide elements 5d, 5e, which guide elements 5d, 5e are located spatially relative to each other in the spatial direction immediately before the spinning device 6. placed so that they are separated. As mentioned above, these guide elements 5d, 5e are arranged at the same level with respect to the spinning device 6, i.e. at the same distance from this spinning device 6, while at the same time laterally opposite each other. It is shifted and placed. As mentioned above, the guiding elements 5d, 5e have a cylindrical or cylindrical geometry or basic shape, so that in the exemplary embodiments shown in these figures these guiding elements 5d, 5e have a cylindrical or cylindrical geometry or basic shape. coaxially arranged and spatially separated from each other in the direction of the central axis of the respective guiding elements 5d, 5e, thus in a spatial direction extending transverse to the guiding direction P of the fibers in a parallel arrangement. , are arranged so as to be spatially separated from each other. In a spatial direction extending transversely to the fiber guiding direction P, two guiding elements 5d, 5e arranged spatially apart from each other provide a pair of guiding elements 5d, 5e assigned to a particular spindle element or bobbin element 10. It may also be referred to or considered a guiding element. With the aid of this pair of guiding elements, the fibers 2a, 2b forming the thread 3 which are wound around the respective spindle or bobbin element 10 are fed.

The guiding device 5 is operated by feeding the fibers 2a, 2b to be spun together into a yarn 3 using two guiding elements 5d, 5e arranged spatially apart from each other in the spatial direction. Between the start and the fiber confluence 12 where the fibers 2a, 2b are brought together, it is possible to influence the free length L of the fibers 2a, 2b that are spun into yarn, that is, in particular The free length L of the yarns 2a and 2b can be increased, which has a favorable effect on the characteristics of the yarn 3 to be manufactured or the characteristics of the yarn 3 that has been manufactured. The increased free length L of these fibers 2a, 2b means that the fiber confluence 12 is further away from the final guiding element 5d, 5e compared to the conventional method, so that This is due to the fact that the fiber confluence 12 is very close to the spinning device 6.

This fiber confluence point 12 represents part of a so-called spinning triangle. This fiber confluence 12 forms the vertex of the spinning triangle facing the spinning device 6. Therefore, since the free length L of the fibers 2a, 2b forming the side surfaces of this spinning triangle increases as described above, the spinning triangle is "stretched" in the fiber guiding direction P. The shape of may be modified according to a method compared to conventional methods.

The angle α of the spinning triangle in the region of the apex facing the spinning device 6 is less than 90°, in particular less than 45°, in particular less than 30°. The angle between the fibers 2a, 2b after leaving the guide elements 5d, 5e is therefore less than 90°, in particular less than 45°, in particular less than 30°. Therefore, the angle is an acute angle.

This method is carried out by influencing the free length L of the fibers 2a, 2b to be spun from the time of departure from the guide device 5, that is, from the final guide elements 5d, 5e, to the confluence point 12 of the fibers. , in particular based on the discovery that by increasing the free length L of the fibers 2a, 2b, certain properties, in particular mechanical properties, of the yarn 3 to be produced or of the yarn 3 produced can be obtained. ing. This results in particular from the fact that, compared to conventional methods, the free length L of the fibers 2a, 2b to be spun increases (significantly) before the confluence of the fibers. The (individual) fibers 2a, 2b may already be (significantly) twisted before the fiber merging point 12, which may affect the properties of the thread 3 produced or the properties of the produced thread 3. has a positive impact on

The free length L of each fiber 2a, 2b between the guide device 5 and the fiber confluence 12 where the fibers 2a, 2b are brought together may range, for example, between 4 and 20 cm, in particular It may range between 7.5 and 15 cm, with 10 cm being preferred.

The free length L' between the respective points 14, 15 where the fibers 2a, 2b depart from the respective guiding elements 5d, 5e in the direction of the fiber confluence 12 is, for example, in the range between 4 and 10 cm. In particular, it may range between 5 and 9 cm, with 6 cm being preferred.

A spinning device 6 according to the method is used, in which the spindle element or bobbin element 10 of the spinning device 6 is separated by a spatially separated arrangement of the guiding elements 5d, 5e assigned to the guiding direction P of the fibers. It can be understood with the aid of these figures that the guide elements 5d, 5e are arranged in alignment with the space 13 formed between the guide elements 5d, 5e. This spindle element or bobbin element 10 is therefore arranged laterally offset (with respect to the fiber guiding direction P) in relation to the guiding elements 5d, 5e assigned to them. In particular, this spindle element or bobbin element 10 is arranged centrally between the guiding elements assigned to it, while being spaced apart from the guiding elements in the fiber guiding direction.

Finally, while in principle a further fiber (dashed line) could also be guided using the respective last guiding element 5d, 5e, this further fiber (dashed line) could also be guided by another spindle or bobbin element (not shown). That is, it is normally fed to a further spindle element or bobbin element arranged parallel to the aforementioned spindle element or bobbin element 10, i.e. to a further spinning area of the spinning device 6, as indicated by the dashed line in FIG. indicated by the fibers of This also applies to the other spinning area, from which the fibers to be spun into yarn 3 are fed using separated guiding elements, as in these figures.

FIG. 2 shows a schematic diagram of a device 1 for producing a yarn 3 formed by spinning at least two individual fibers 2a, 2b, according to a further exemplary embodiment. FIG. 2 shows a schematic plan view of the manufacturing apparatus 1. As shown in FIG. FIG. 4 shows an enlarged view of detail IV shown in FIG.

2 and 4 that it is also possible within the framework of the method for at least three fibers 2a to 2c to be spun together to form a thread 3. These at least three fibers 2a to 2c are brought together at a fiber confluence 12. As a result, the yarn 3 can be manufactured from more than two fibers 2a to 2c (multifilament yarn).

As shown in FIGS. 2 and 4, according to the method, by spinning at least three fibers 2a to 2c to form a thread 3, at least two fibers 2a, 2c are attached to the first guiding element 5d. at least one further fiber 2b is supplied together with the spinning device using a further guiding element 5e which is arranged spatially spaced apart from the first guiding element in the spatial direction. may be executed as follows. Thus, at least two fibers 2a, 2c may be fed using the first guiding element 5d, and at least one further fiber 2b may be fed using the further guiding element 5e. In this connection, the fibers 2a to 2c can be divided evenly or unevenly into a predetermined number of guiding elements. In the case of a supply of four fibers as additionally shown in FIG. 4 (the fourth fiber is shown in dashed lines) and an exemplary number of two guiding elements 5d, 5e, two of fibers may be fed from the first guiding element 5d and two fibers may be fed from the second guiding element 5e, or three fibers may be fed from the first guiding element 5d, and One fiber may be fed from the second guiding element 5e.

Alternatively, although not shown, by spinning at least three fibers 2a-2c according to the method, the at least three fibers 2a-2c are fed to the spinning device 6 using three separate guiding elements. In some cases, at least one first fiber 2a is fed using a first guiding element and at least one second fiber 2b is spaced from said first guiding element in at least one spatial direction. supplying the at least one third fiber 2c with a second guiding element arranged so as to be spatially separated from the second guiding element in at least one spatial direction; Providing with a third guiding element arranged in the third guiding element ensures that the three individual guiding elements are arranged so as to be spaced apart from each other in at least one spatial direction. As a result, each fiber 2a-2c may also be fed using a separate guiding element.

Finally, it is shown in FIG. 4 that within the framework of the method at least two fibers 2a to 2c and at least one filament 17 can also be spun together to form a thread 3. These at least two fibers 2a to 2c and this at least one filament 17 are brought together at a fiber confluence point 12. As a result, yarn 3 can be produced from at least two fibers 2a to 2c and at least one filament 17.

According to the method, spinning at least two fibers 2a-2c and at least one filament 17 is achieved by spinning said at least two fibers 2a-2c using two separate guide elements 5d, 5e in a spinning device. 6, said two individual guiding elements 5d, 5e being arranged spaced apart from each other in at least one spatial direction, said at least one filament 17 is supplied, for example, from a particularly spool-shaped or spool-shaped filament storage unit 18, such as a filament bobbin, or the at least one filament is supplied from the two individual guide elements 5d, 5e mentioned above. A third, remote guide element is used to provide the feed.

Although not shown, as an alternative or in addition to the described arrangement of the guiding elements 5d, 5e such that they are spatially separated from each other in a spatial direction extending transverse to the guiding direction P of the fibers. It is also possible, at least in principle, to use at least two guiding elements 5d, 5e which are arranged spatially apart from each other in a spatial direction parallel to the fiber guiding direction P. Consequently, at least in principle, guide elements 5d, 5e which are arranged offset in the fiber guiding direction P may be used.

Within the framework of the method, fibers 2a, 2b with identical and non-identical chemical and/or geometrical and/or physical properties, in particular mechanical properties, are spun together to form a yarn 3. You may.

Within the framework of this method, all natural fibers, i.e. alpaca fibers, cotton fibers, cashmere fibers, mohair fibers, silk fibers, hemp fibers, wool fibers, in particular virgin wool fibers, etc., and/or all chemical Fibers (synthetic fibers), eg plastic fibers, especially polyamide fibers, polyester fibers, polypropylene fibers, viscose fibers, etc., may be spun together to form the manufactured yarn. In particular, it is also possible to combine natural fiber(s) and synthetic fiber(s). These fibers may be continuous or staple fibers, depending on availability.

The (individual) fibers 2a, 2b may also be made of or comprise at least two chemically and/or geometrically and/or physically different fiber materials. good. The corresponding fibers 2a, 2b, also referred to as blended rovings, therefore also include, for example, a first fiber material (roving material) and at least one further fiber material (roving material). ) may be created.

Claims (6)

A method for producing a yarn (3) formed by spinning at least two individual fibers (2a to 2c), the fibers comprising staple fibers, comprising:
- providing said at least two individual fibers (2a-2c) to be spun to form said yarn (3) produced;
- using a guiding device (5) comprising a plurality of cylindrical or cylindrical guiding elements (5a to 5e) to guide the provided at least two said fibers (2a to 2c) to at least one spindle element; or feeding a spinning device (6) comprising a bobbin element (10), at least two said fibers (2a, 2b) using at least two individual said guiding elements (5d, 5e). ) is supplied to the spinning device (6), at least two of the guide elements (5d, 5e) are arranged so as to be spatially separated from each other in at least one spatial direction, and at least two of the the guiding element (5d, 5e) being the last guiding element before the spinning device (6);
- A method comprising the step of spinning the supplied fibers (2a, 2b) in the spinning device (6) to form the manufactured yarn (3),
at least two of the guide elements (5d, 5e) are coaxially arranged so as to be spatially separated from each other in the direction of the central axis of each of the at least two guide elements (5d, 5e);
at least two said fibers (2a, 2b) are brought together at a fiber confluence (12) after leaving at least two said guiding elements (5d, 5e);
the fiber confluence (12) forms the apex of a spinning triangle facing the spinning device (6);
the angle (α) of the spinning triangle in the region of the apex facing the spinning device (6) is 90° or less;
The free length (L) of each of the at least two fibers (2a, 2b) between the at least two guide elements (5d, 5e) and the fiber confluence (12) is between 4 and 20 cm. is within the range of
feeding at least two of the fibers (2a, 2b) to the spinning device (6) in a state where a pretension force is generated by pulling the fibers;
Freedom between the respective points (14, 15) at which at least two said fibers (2a, 2b) leave at least two said guiding elements (5d, 5e) in the direction of the confluence (12) of said fibers The length (L') is in the range of 4 to 10 cm,
at least three said fibers (2a-2c) are spun together to form a yarn (3);
at least two said fibers (2a, 2c) are fed together to a spinning device using a first guiding element (5d);
at least one further said fiber (2b) is fed with a further guiding element (5e) arranged spatially apart from said first guiding element (5d) in at least one spatial direction;
A method characterized in that said first guiding element (5d) and said further guiding element (5e) are the last guiding elements before said spinning device (6) . Said spinning device (6) is used, the spindle element or bobbin element (10) of said spinning device (6) being arranged in a spatial direction of at least two said guiding elements (5d, 5e) assigned in the guiding direction of the fibers. 2. A method according to claim 1, characterized in that the guide elements (5d, 5e) are arranged in alignment with a space formed between at least two guide elements (5d, 5e) by a spaced apart arrangement. Method according to claim 1 or 2, characterized in that the angle (α) of the spinning triangle in the region of the apex facing the spinning device (6) is less than or equal to 45°. Method according to any one of the preceding claims, characterized in that the free length (L) of the at least two fibers (2a, 2b ) ranges between 7.5 and 15 cm. At least three said fibers (2a-2c) are fed to said spinning device (6) using three individual cylindrical or cylindrical guiding elements, the three individual said guiding elements comprising at least one arranged so as to be spaced apart from each other in the spatial direction,
At least one first fiber (2a) is fed with a first guiding element, and at least one second fiber (2b) is spaced from said first guiding element in at least one spatial direction. the at least one third fiber (2c) being spatially spaced apart from said second guiding element in at least one spatial direction; a third guiding element arranged to
Method according to claim 1 , characterized in that the first guide element, the second guide element and the third guide element are the last guide elements before the spinning device (6). . A method for producing a yarn (3) formed by spinning at least two individual fibers (2a to 2c), the fibers comprising staple fibers, comprising:
- providing said at least two individual fibers (2a-2c) to be spun to form said yarn (3) produced;
- using a guiding device (5) comprising a plurality of cylindrical or cylindrical guiding elements (5a to 5e) to guide the provided at least two said fibers (2a to 2c) to at least one spindle element; or feeding a spinning device (6) comprising a bobbin element (10), at least two said fibers (2a, 2b) using at least two individual said guiding elements (5d, 5e). ) is supplied to the spinning device (6), at least two of the guide elements (5d, 5e) are arranged so as to be spatially separated from each other in at least one spatial direction, and at least two of the the guiding element (5d, 5e) being the last guiding element before the spinning device (6);
- A method comprising the step of spinning the supplied fibers (2a, 2b) in the spinning device (6) to form the manufactured yarn (3),
at least two of the guide elements (5d, 5e) are coaxially arranged so as to be spatially separated from each other in the direction of the central axis of each of the at least two guide elements (5d, 5e);
at least two said fibers (2a, 2b) are brought together at a fiber confluence (12) after leaving at least two said guiding elements (5d, 5e);
the fiber confluence (12) forms the apex of a spinning triangle facing the spinning device (6);
the angle (α) of the spinning triangle in the region of the apex facing the spinning device (6) is 90° or less;
The free length (L) of each of the at least two fibers (2a, 2b) between the at least two guide elements (5d, 5e) and the fiber confluence (12) is between 4 and 20 cm. is within the range of
feeding at least two of the fibers (2a, 2b) to the spinning device (6) in a state where a pretension force is generated by pulling the fibers;
Freedom between the respective points (14, 15) at which at least two said fibers (2a, 2b) leave at least two said guiding elements (5d, 5e) in the direction of the confluence (12) of said fibers The length (L') is in the range between 4 and 10 cm,
at least two said fibers (2a, 2b) and at least one filament (17) are spun together to form a yarn (3);
At least two said fibers (2a, 2b) are fed to said spinning device (6) using two individual cylindrical or cylindrical guiding elements (5d, 5e), two individual said guiding elements (5d, 5e) are arranged so as to be separated from each other in at least one spatial direction,
a third guiding element in which at least one said filament (17) is supplied from a filament storage unit (18) or at least one said filament is separate from two individual said guiding elements (5d, 5e); supplied using
A method characterized in that the two individual guide elements (5d, 5e) and the third guide element are the last guide elements before the spinning device (6) .

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