CZ2003148A3 - Fancy component yarn containing a continuous component and spun up component, process, and apparatus for making the same - Google Patents

Abstract

The effective composite yarn (3) comprises a continuous yarn component (31), in particular a flexible continuous component, and a spun component (32) spun in the rotor rotor r of the spinning machine of the separate fibers. The yarn component (3) has varying in length over its length, while being cross-sectional the yarn (3) varies along the length of the spun component (32); r the relative position of the continuous component (31) and the spun component (32) in the cross section of the component yarn (3) is along the length of the component yarn (3) variable. The continuous component (31) is formed by two or more linear textile formations.

Description

Technical field

The invention relates to an effect component rotor yarn comprising a continuous component, in particular a resilient continuous component, and a component spun in the rotor of a single fiber rotor spinning machine, the component yarn having a variable thickness over its length.

Further, the invention relates to a method for producing such an effect component rotor yarn on a rotor spinning machine, into the rotor of which a continuous component yarn component and single strands of fiber are fed, from which a spun component is spun, fancy component rotor yarns.

Further, the invention relates to a rotor spinning machine for producing an impressive 15 component rotor yarn, the rotor spinning machine comprising a plurality of side-by-side workstations, each comprising a fiber sliver feed device to the opener device, a fiber feed device to the rotor and a feed device. continuous components to the rotor.

BACKGROUND OF THE INVENTION

According to US 4,218,868, fancy yarn of varying thickness can be produced on a rotor spinning machine by varying the yarn deflection between the take-off rollers and the outlet of the yarn take-off tube from the rotor to change the yarn length between the rotor collecting surface. and, as a result, the yarn draw speed is changed. Depending on the yarn draw-off speed, the thickness of the yarn also varies and the yarn creates strong and weak points.

The disadvantage of this solution is, in particular, the handling of the yarn before the take-off rollers, since there is a serious danger that the yarn breaks instead of changing the draw-off speed.

Furthermore, it is known from US 4,361,007 to manufacture yarns with sharply defined thickened spots. The united fibers are transported from the combing roller to the rotor by means of a suction air flow through a transport channel. In the rotor, the fibers are deposited on the collecting surface and twisted in a known manner into a yarn which is withdrawn from the rotor at a constant pulling speed by the pulling rollers.

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Achieving the desired yarn reinforcement effect is achieved by retaining a portion of the fibers in the fiber transport channel to the rotor and suddenly releasing them. As a result, a larger amount of fibers enter the rotor and produce a yarn of greater thickness. The yarn is again thinned by further partial retention of the filaments. The retention of the fibers is caused, for example, by a program-controlled means, which may be a spring-loaded reciprocating slide, a suitably selected program-controlled pivot means and the like.

The disadvantage is the structural complexity and the fact that the retention means interferes with the flow of the unified fibers fed to the rotor. In fact, the retained and subsequently released fibers are not parallelized upon their entry into the rotor, which is one of the basic conditions of rotor spinning, and therefore, this solution, which is not known to be implemented, would not only have irregularities in the appearance of the yarn, but also in the strength of the yarn and in the interruption of the front yarn due to the supply of unparalleled fibers.

DE 41 24 571 discloses a method for producing fancy yarn containing thick and thin spots on rotor spinning machines, according to which a strand of fibers is fed to an opener device in which it is fed to individual fibers which are fed through a transport channel to a rotating rotor. are collected on its collecting groove, twisted into a yarn which is pulled from the rotor by a pair of take-off rollers and wound on a bobbin. A nozzle for intermittent supply of compressed air opens into the transport duct or into the rotor, the action of which increases or decreases the amount of fiber fibers fed to the rotor for spinning.

From CZ 239510 a rotor spinning device is known, whose sliver feed mechanism comprises two separate feed rollers on a common support shaft and a split feed table. One of the feed rollers is fixedly mounted on the support shaft and serves to supply the basic fiber component and the other is intended to supply the effect fiber component and is displaceably and rotatably mounted on the support shaft. The second feed roller is provided with means for actuating depending on the programmatic choice of feeding the effect component of the fibers.

In addition to the structural complexity, the displaceability of the second feed roller in the fiber sliver or roving feed environment is a drawback, since dust, fiber fragments and debris from the sliver or roving are deposited and consequently equipment failures.

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Equipment for the production of fancy yarn containing strong and weak points, such as AMSLER TEX AG, has achieved industrial use on rotor spinning machines. In this device, the feed roller for feeding the sliver of fibers into the opener device is coupled to a variable speed drive.

Due to the sudden short-term variations in the feed speed of the sliver, a variable amount of sliver is fed to the opener and consequently the opener produces a varying number of singlets, so that the amount of singled fibers fed to the rotor varies, and therefore the yarn thickness.

Further, it is known on rotor spinning machines to manufacture component yarns comprising a continuous component, in particular a flexible component, and a component spun in a single fiber rotor.

ZCS 218925 B1, CS 221970 B1 and CS 222553 B1 are known yarn components comprising a spun component consisting of a rotor yarn of staple fibers, which is wound in the direction of its twists with one or more continuous components. The continuous components may have a different pitch angle or may be wrapped around a spinning component in a non-uniform helix. The spun component forms the core of the component yarn and has a constant cross-section.

It is an object of the invention to expand the range of rotor component effect yarns to design a manufacturing method and to provide a device for producing such yarns.

SUMMARY OF THE INVENTION

The object of the invention is achieved by an effect component rotor yarn comprising a continuous component according to the invention, characterized in that in the component yarn cross-section the amount of component spun in the single-fiber rotor varies along its length. comprising a continuous component and having at the same time a varying thickness of the spun component, the relative position of the spun component and the spun component in the cross-sectional yarn cross-section being a new generation in the range of known effect component rotor yarns in the case of a resilient continuous component, the appearance of the resultant effect component yarn varies according to the actual tension of the component yarn, which for example • · · · ·

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999 · 99 999 99 99 means that when the elastic continuous component of the spun yarn is changed during spinning, the thickness, the size of the studs and, in particular, the position of the studs on the resulting component yarn change when bonded to the spun component. At the thickened spots of the yarn, the continuous component is placed under less stress, which causes less elasticity of the thickened spots, thereby contributing to the stability of the yarn behavior in the fabric.

According to the invention, the method of producing a fancy component rotor yarn comprising a continuous component according to the invention consists in that during spinning the amount of fiber filaments fed to the rotor suddenly changes, thereby suddenly and significantly changing the thickness of the spun component. other effects on the component yarn, in particular to change the relative position of the continuous component and the spun component in the cross-section of the component yarn, thereby creating an effective component rotor yarn containing strong and weak points and other variable effects due to the variable position yarn.

Suddenly, by varying the thickness of the component yarn due to changes in the weight of the component spun in the unified fiber rotor, the relative proportions change when it is joined with the continuous component into the spun component yarn.

As a result of this change in relative ratios, the relative position changes when the two components are joined, the one component being wrapped with the other and vice versa, thereby creating additional effects on the component yarn which are not achievable with other known methods for producing component effect rotor yarns. This method of producing the component yarn greatly increases the stability of the thickened spots on the yarn due to the uneven distribution of the mass of the continuous component in the resulting yarn.

At the thickened locations, the elastic continuous component is deposited with less bias, thereby storing more mass of the continuous component than would correspond to the linear portion in the yarn.

Further effects on the component yarn, in particular for the resilient continuous component, can be achieved by varying the tension of the continuous component as it is fed into the rotor.

If the variation in the tension of the continuous component is applied alone without a combination with a suddenly variable change in the amount of fiber filaments fed to the rotor, an effect component yarn with smoother effect transitions is produced.

The essence of a rotor spinning machine for producing a fancy component rotor yarn comprising a continuous component and a component spun in an unified fiber rotor is that the fiber sliver feeder is coupled

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4 4 with variable speed drive during spinning. This drive is preferably coupled to a control unit with which the drive of the continuous component feed machine is coupled to control the feed rate of the continuous component during spinning.

Overview of the drawings

Examples of embodiments of a rotor spinning machine for carrying out the method according to the invention and producing an impressive component rotor yarn comprising a continuous component, in particular a flexible component, and a fiber-spun component on a rotor spinning machines are schematically shown in the attached drawing. of a rotor spinning machine for producing a fancy component rotor yarn comprising a continuous component formed by one linear textile formation in FIG.

and FIG. 2 for producing a fancy component rotor yarn in which the continuous component is formed by two linear textile formations.

DETAILED DESCRIPTION OF THE INVENTION

The method according to the invention will be described by way of example of an embodiment of a rotor spinning machine for spinning an effect component rotor yarn, of which only the parts related to the method according to the invention are shown in the accompanying drawings.

The rotor spinning machine comprises a plurality of substantially identical working stations arranged side by side, comprising a spinning unit in which the component yarn is spun from the fibers and the continuous component.

The spinning unit 1 comprises a rotor 2 which is mounted on a hollow shaft 21, 25, which is mounted in the spinning unit 1 in a known manner by means of a roller bearing (not shown). The hollow shaft cavity 21 serves to convey the continuous component 31 of the component yarn 3 to the spinning rotor 2, wherein the continuous component 31 is fed by the known continuous component feeding device 4. The spinning unit 1 further comprises a fiber sliver feeding device 5 which is stored in a magazine 7 located below the spinning unit T The fiber sliver feeding device 5 is connected with a known opener device 8, from which the opener fibers are conveyed to the rotor in a known manner 2 for spinning.

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The fiber feed feeder 5 comprises a driven feed roller 51, to which a pressure member 52 is pressed, which may be a pressure feeder roller, as in the illustrated embodiment, or a known feed table (not shown) or other known member (not shown). The feed strand 6 is gripped between the peripheral surface of the feed roller 51 and the pressing member 52 during feeding. The feed roller 51 is coupled to an individual or central drive 510 with the possibility of rapidly changing rotation speed, for example an AC motor with converter, servomotor, variable torque clutch. . It is therefore able to present to the combing roller 81 of the opener device 8 an almost step-varying amount of fiber sliver 6. Due to the constant rotation speed of the combing roller 81, a variable amount of the filaments 61 are fed to the rotor 2. In the spinning rotor 2, the continuous component 31 is bonded to the spun component 32 formed in the spinning rotor 2. which is withdrawn from the rotor 2 in a known manner, passing through the yarn removal tube 91, is withdrawn by the yarn draw-off device 92 and during the spinning process it is wound at the work station by a winding device 93 onto a bobbin 94.

In the exemplary embodiment shown in FIG. 1, the feed roller 51 of the sliver 5 of the fiber sliver 6 is coupled at each workstation to an individual drive 510 which is coupled to the control unit 10 in particular to control its speed. the speed of the feed rollers 51 changes at all workstations simultaneously.

In the production of the component yarn 3, the continuous component 31 is fed into the spinning rotor in a known manner with a constant voltage and at the same time filaments are fed to the rotor 2 from the opener 8 and deposited in the rotor 2 in a known manner. The two components, the continuous component 31 and the spun component 32, are joined in the rotor 2 to form a component yarn 3, which is withdrawn in a known manner and wound on a bobbin 94.

33 £ 3363 33 £ 3363 ζ 33 £ 3363 ζ £ £ 3363 ζ

The fiber device 6 is fed a fiber strand 6 to a feed device 5 whose feed roller 51 has a sudden variable speed and consequently the fiber device 6 is supplied with a sudden variable amount of fiber strand 6 so that the fiber device produces a suddenly variable amount of fiber fibers 61 over time. With the sudden variation in the amount of filaments 61 fed to the rotor 2, the thickness of the spun component 32 suddenly changes at which the strengths and weaknesses are formed according to the actual amount of filaments 61 supplied. When joining the spun component 32 to the continuous component. 31, the two components are wrapped together

Due to the variable thickness of the spun component 32, the two components 31, 32 are wound irregularly and alternately in the wrapping process, i.e. the spun component 32, for example, winds the continuous component 31, and subsequently winds the continuous component 31. In addition to the strengths and weaknesses due to the varying thickness of the spun component 32, the component yarn 3 also causes additional effects due to the irregularity of the wrapping of the components 31, 32 and their mutual rotation in the wrapping. The component yarn 3 with strong and weak points and other additional effects is shown only schematically in the figure.

In the case of the flexible continuous component 31, another variable may be introduced into the spun component yarn 3, which affects the final appearance of the spun component yarn 3 and adds additional effects. This additional variable is the voltage of the supplied flexible continuous component 31. As the voltage of the continuous component 31 fed to the rotor 2 changes, the interrelated irregularity of the continuous component 31 and the spun component 32 changes further as a result of which the other effects on the the resultant fancy yarn component 3.

Further variations of the effects on the effect component yarn 3 according to the invention are achieved by the regularity of the changes in the feed rate of the fiber strand or the tension of the continuous component 31, respectively the variability of these changes and their mutual variations.

In the embodiment of FIG. 2, the continuous component yarn component 31 is formed from two linear textile formations 311 and 312 which are unwound from spools 313, 314. The spools 313, 314 with a winding of the linear textile formation 311, 312 are deposited on the unwinder 315 which consists of two superposed pairs of mutually coupled cylinders 3151, 3152 and 3153, respectively. F * SS36S £ Z ··· ···

3154, each of which is coupled to a drive 316 of the unwinder 315, which is connected to a control unit 10. The two linear textile formations 311, 312 are fed by a feed tube 317 through a hollow shaft 21 to the rotor 2. The feed tube 317 is formed. a shaped tube which is divided at its inlet end into two inlet portions 3171, 3172, one linear textile formation 311, 312 being introduced into each of them. Flexible yarns or threads, different types and / or yarns may be combined as linear formations, shaped fibers, etc.

The unwinding device 315 may also be formed in another suitable manner, for example, one pair of movement-coupled rolls on which the spools of the winding of the linear textile formations are laid along the length of the machine in succession.

The continuous component 31 may also comprise a plurality of linear textile formations, the number of which, however, is limited by the real possibilities of their placement near each work station of the rotor spinning machine and the real possibilities of their transport to the rotor 2, i. in particular, the diameter of the cavity of the hollow shaft 21 and the resulting inner diameter of the feed tube 317, which must allow all linear textile formations to pass into the rotor 2.

The feed tube 317 may be formed with a single entry portion for all linear textile formations or with a number of entry portions corresponding to the number of linear textile feeds to be fed. The feed tube 317 may also, in another embodiment (not shown), be a separate feed tube for each linear textile formation being fed, the feed tubes being joined to a common straight portion passing through the hollow shaft cavity into the rotor.

At the same time, the rotor spinning machine is equipped with means (not shown) for monitoring the presence of each of the linear textile structures fed to the spinning rotor 2 and means for monitoring the presence of the spun component 32 and the linear textile formations in the yarn 3. spinning at the workstation in the absence of any of the components of the fancy component rotor yarn.

Claims (9)

PATENT REQUIREMENTS • 9 999 • 9 9 9 9 9 9 9 9 fcfcfcfcfcfc ps336scz *: An effective component rotor yarn comprising a continuous component, in particular a flexible continuous component, and a spun component spun in a rotor rotor. 5, characterized in that the amount of spun component (32) spun in the spun rotor (2) varies along the length of the component yarn (3), wherein the position of the continuous component (31) and spun relative to each other. The component (32) in the cross-section of the component yarn (3) is variable. Effective component rotor yarn according to claim 1, characterized in that: 10, the continuous component (31) is formed by at least two linear textile formations. Effective component rotor yarn according to claim 2, characterized in that at least one linear textile formation is elastic. 4. A method for producing a fancy component rotor yarn comprising a continuous component, in particular a flexible continuous component, and a spun component, spun component. 15 in a single-fiber rotor, on a rotor spinning machine, into the rotor of which a continuous component yarn component and single-strand fibers are fed, from which the spun component is spun, which in the rotor joins the continuous component into an effective component rotor yarn; characterized in that the amount of fiber filaments (61) fed to the rotor (2) is varied, 20, the thickness of the spun component (32) varies in length, which, when coupled to the continuous component (31) in the rotor (2), results in further effects on the effect component rotor yarn (3), in particular changes in relative position of the continuous component (31). a component (32) in cross-section of the effect component rotor yarn (3), thereby forming an effect component rotor yarn (3) containing strong and weak points and other 25 variable effects due to the variable position of the continuous component (31) and the spun component (32) in the cross section of the effect component yarn (3). Method according to claim 4, characterized in that during the spinning the voltage of the continuous component (31) to be fed is randomly or periodically changed, thereby causing further effects on the resulting effect component yarn (3). 30 6. A rotor spinning machine for producing a fancy component rotor yarn comprising a continuous component, in particular a flexible continuous component, and a component spun in a single fiber rotor, wherein the rotor spinning machine comprises a plurality of side-by-side working stations, each of which · 9 9 9 9;;;;;;;;;;;;; 9; :: pss36scz; Comprises a fiber sliver feed device to the opener device, a fiber feed device to the rotor, and a continuous component feed device to the rotor, characterized in that the sliver feed device (5) ( 6) the fibers are coupled to a suddenly variable speed drive (510). 5 Rotor spinning machine according to claim 6, characterized in that the drive (510) with a sudden variable speed is coupled to the control unit (10), the drive of the feed device (4) of the continuous component (31) for controlling the feed rate the components (31) during spinning. A rotor spinning machine for producing a fancy component rotor yarn 10 comprising a continuous component formed by at least two linear textile formations, at least one of which may be resilient, the rotor spinning machine comprising a plurality of side-by-side workstations each comprising a sliver feeder to the union assembly, a device for conveying the unified fibers to the rotor, and means for feeding at least two 15. A continuous-component linear textile formation into a rotor, characterized in that the fiber sliver feed device (5) is coupled to a variable speed drive (510) and means for supplying at least two continuous-component linear textile structures (31). ) the component yarns (3) into the spinning rotor (2) comprise separate components (31) for each linear textile formation of the continuous component (31) Unwinding device with forced drive. A rotor spinning machine for producing a fancy component rotor yarn comprising a continuous component formed by at least two linear textile formations, at least one of which may be flexible, the rotor spinning machine comprising a plurality of side-by-side working stations, each of which 25 comprises a fiber sliver feed device to the union assembly, a fiber feed device to the rotor and means for feeding at least two linear textile formations forming a continuous component to the rotor, characterized in that the fiber sliver feed device (5) is coupled to a variable speed drive 1510) and means for supplying at least two linear ones The 30 textile formations of the continuous component (31) of the composite yarn (3) into the spinning rotor (2) comprise a force-driven unwinding device common to at least two linear textile formations of the continuous component (31).