CN101472819A - Method for manufacturing yarn barrel and yarn processor - Google Patents

Abstract

A yarn spool production method on a yarn processing machine (1) is disclosed, comprising the following method steps: unspooling at least one filament yarn (5) from a feed spool (4), previously mounted on a feed spool tube holder (3) on the yarn processing machine (1), producing an effect yarn (7), by means of a yarn processing unit (6) on the yarn processing machine (1), from the filament yarn (7) and production of a yarn spool by spooling the effect yarn (7) on a take-up spool (2) on a take-up spool holder (9) on the yarn processing machine (1), with taking up being carried out on a dyeing spool with cross-winding as take-up spool (2).

Description

Yarn bobbin manufacturing method and yarn processing machine

technical field

The invention relates to a method for producing a yarn bobbin and a yarn processing machine for carrying out the method for producing a yarn bobbin. In this yarn bobbin manufacturing method, the following steps are carried out: unwinding at least one filament thread from a yarn supply bobbin prepared on the yarn supply bobbin of the yarn processing machine, passing through the yarn processing unit of the yarn processing machine for Filament yarns are used to make fancy yarns, and bobbins are made by winding the fancy yarns onto twisting bobbins on the creel creel of a yarn processing machine.

Background technique

Among them, for the manufacture of fancy yarns, for example, a crimping process is used or at least one core thread is wrapped with a covering yarn through an air covering nozzle. Thus, fancy yarns are considered to be produced from at least one multifilament yarn by mechanical and/or thermal processing. A yarn processing machine for carrying out the above method has, for example, a false twist texturing unit, an air-jet texturing nozzle or an air covering nozzle as a yarn processing unit. The fancy yarns to be produced are, for example, yarns made of polyamide (PA) such as nylon, yarns made of Hernaqueen fibers (HE) or elastane, ie yarns made of polyurethane , or to multi-component yarns made from different yarns of this type, wherein the polyurethane yarns may be false twisted, that is to say, may be drawn textured yarns (Draw Textured Yarn). The yarns produced in this way are usually further processed in downstream processes, for example usually followed by dyeing of fancy yarns.

)，所述加捻柱收缩到加热器(加捻区域)，由此可实现，长丝线的捻回弹力纱状态在假捻锭子前通过加热和冷却被热定型。然后在假捻锭子后面再次松开加捻。所述纱线由于在捻回弹力纱状态中进行的热定型而具有卷曲的结构。The false twist texturing process is used to make crimped and structured fancy yarns from plastic-like, smooth and smooth multifilament yarns due to their bulky and bulky structures (waves) Organization) and have textile properties. For this purpose, the multifilament yarn (thread) is usually unwound from a feed bobbin, guided over a first delivery roll, heated in a heater (primary heater), cooled in a cooling track, passed through a dummy The twisting spindle and the second delivery roller arranged behind it, a so-called unwind delivery roller, guide it so that it is subsequently wound onto a yarn bobbin. The heater, cooling track and false twist spindle constitute the false twist texturing unit. The purpose of the false twist spindles is to temporarily tighten the multifilament yarn during operation, that is to say to produce the twisting of the multifilament yarn or individual filaments by transmitting an axial torque to the filaments. This brief twisting (twisting back into the spandex state) is called false twist (FD). Twisting columns are formed by said twisting (

), the twisting column shrinks to the heater (twisting zone), which can be realized, and the state of the twisted elastic yarn of the filament is heat-set by heating and cooling before the false twisting spindle. The twist is then loosened again after the false twist spindle. The yarn has a crimped structure due to heat setting performed in the twisted elastic yarn state.

Faster production speeds can be achieved by using frictional false twist spindles as false twist spindles. With such false twist spindles, the filaments are driven directly with the aid of friction surfaces. A higher rotational ratio between the rotation of the disk and the twisting of the filament is achieved due to the smaller diameter of the wire to the spindle, that is to say compared to a disk such as a disk friction device. The triaxial disk friction device is particularly suitable for this purpose. As false twist spindles, friction false twist spindles are therefore mainly used, in particular three-axis disc friction devices and so-called clamp false twist devices, which transmit the torque to the filaments via crossed belts. For example, a kind of disc friction device of this type is disclosed in DE3743708 A1. Disclosed in JP 06184848 A is a clamping false twisting device. Twist distribution by friction enables very high rotational speeds and thus high production speeds.

In addition, yarn processing machines (air texturing machines) for processing filament yarns with air texturing nozzles are known. A jet texturing machine of this type is disclosed in DE 39 09 516 A1. The jet texturing machine is used for stable crimping of smooth and unstructured filaments. Several feed yarns (core yarns) can be processed into textured fancy yarns with output filament yarns (fancy yarns) in this process. In this process the filaments are evenly crimped and if possible arranged around the feed yarn. The corespun can contain different yarns. The filament yarns, ie corespun and core yarns, are fed via output rollers, such as godet rollers, from the air-jet texturing nozzle. After the thread passes through the air-jet texturing nozzle, the finished multi-component fancy yarn, that is, a multi-component yarn, is received by a spool, and the multi-component yarn is wound on the spool. The multicomponent yarns are stretched, consolidated, shrunk and/or softened again prior to winding.

Machines with air-covering nozzles (air-covering machines) are used to stably interconnect filament threads to form multicomponent yarns (air-covering yarns). In this case at least one cored wire as a component is connected to one core wire. The purpose of this process is to achieve as even a weaving knot as possible in the multicomponent thread and to connect the individual components to one another in this way. An example of an air cladding machine is disclosed in US6 405 519 B1. Most of the core threads are yarns containing elastomers. The corespun can contain different yarns. The filaments, ie the respective cores and cores, are fed via output rolls, such as godet rolls, of the air cladding nozzle. After the thread has passed through the air covering nozzle, the finished multi-component fancy yarn, that is, a multi-component yarn, is received by a spool, and the multi-component yarn is wound on the spool. The multicomponent yarns are again consolidated, shrunk and/or softened prior to winding. In the air-clad nozzle, the core wire is joined to the core wire with the aid of an air jet. For this purpose, the air jet is introduced into the air-shrouding nozzle with a jetting direction that is not parallel to the air-shrinking nozzle axis of the air-shrinking nozzle. The air covering nozzle axis of the air covering nozzle is defined by a channel in which the filament thread is guided through the air covering nozzle.

During the winding onto the twist bobbin, a bobbin is produced in known bobbin manufacturing methods, in which the fancy yarn is wound onto a tubular bobbin. The fancy yarn is tightly wound here so that it is tightly wound around the bobbin, where the winding density, ie the weight of the wound yarn per wound yarn volume (yarn package) , that is, the winding density of the yarn package is typically greater than 300 grams per liter (g/l), such as in manufactured false twist textured Hernaquin fiber fancy yarns. This higher winding density is dependent on a higher manufacturing speed of the fancy yarn, for example 500 meters per minute, thus resulting in a relatively greater yarn tension during the manufacturing process, which in turn leads to a larger winding density.

The disadvantage of the yarn bobbin produced in this way is that it is not suitable for direct use for the dyeing of the wound fancy yarn. A major problem in the dyeing process, especially of highly elastic false-twisted textured fancy yarns, is their shrinkage, in which the original volume of the yarn bobbin may shrink to about 40%. Such shrinkage can be caused, for example, by the conventional process temperatures of between 100 and 130 degrees Celsius during dyeing. During dyeing of yarn bobbins with non-elastic, ie stiff bobbins, the inner layer of the bobbins of the yarn bobbins may not shrink. Shrinking takes place on the outer layer of the yarn winding so that the inner layer is compressed. In extreme cases, for example in the case of false twist textured fancy yarns made of PA, the inner layer of the bobbin is completely flattened. This gives rise to the uneven color of the fancy yarn. To avoid this problem the yarn bobbin is rewound on a less thick dyed bobbin wound during dyeing. Also, dyed cheeses do not have stiff bobbins. After winding is complete, the yarn package is pushed down from a bobbin used in winding to obtain said bobbin. Such dyed packages are also known as armhole packages. Such armhole packages are produced by rewinding a relatively thick bobbin onto a dyed cheese, that is to say, by performing an additional winding process. Manufacture of armhole packages on standard rewinders using larger diameter bobbins. About one kilogram of fancy yarn is wound on such bobbins at a winding density of 120 grams per liter. During the manufacture of the armhole package, a rigid bobbin is usually first put on the bobbin holder of a corresponding rewinding device. An elastic stocking is fitted onto this stiff bobbin, with the ends of said stocking inserted into the corresponding ends of the bobbin, so as not to interfere with the end of the winding process. In general, elastic tubular structures can also be used instead of textile stockings, for example cylindrical fabrics or any elastic cylindrical fabrics suitable for stocking replacements, such as plastic mesh. After the dyed package has been wound at a winding density suitable for dyeing, the bobbin is removed from the bobbin holder of the rewinding device together with the stocking and the wound yarn package. The end of the stocking is then pulled from the bobbin and fitted onto the yarn package, and the stiff bobbin is pressed out of the yarn package. The stocking-covered yarn package, that is, the armhole package, is suitable for dyeing because the armhole package is wound at a relatively small density and does not affect the spool if it shrinks. inner layer.

Contents of the invention

It is therefore the object of the present invention to provide a yarn bobbin manufacturing method and a yarn processing machine for carrying out the yarn bobbin manufacturing method, which avoid the disadvantages of the prior art, especially for fancy yarns. There is no need to rewind the manufactured fancy yarn before dyeing.

This object is achieved by the yarn bobbin manufacturing method and the yarn processing machine of the independent claims. The dependent claims give preferred embodiments of the invention.

In the yarn bobbin manufacturing method according to the present invention, the following process steps are carried out on the yarn processing machine:

- unwinding at least one filament thread from a yarn supply bobbin prepared on a yarn supply bobbin holder of a yarn processing machine,

- the manufacture of filament yarns into fancy yarns by means of a yarn processing unit of a yarn processing machine, and

- manufacture of yarn bobbins by winding said fancy yarn onto twisting bobbins on a twisting creel of a yarn processing machine.

According to the invention, dyeing bobbins with cross-wound threads are wound as twisted bobbins. The fancy yarns made of filament threads are produced on a yarn processing machine and are directly wound up on the dyeing bobbins on the same yarn processing machine, in this way rewinding according to the prior art is omitted. The dyeing bobbins, which have a relatively low winding density, are wound so softly that they can be removed from the bobbin without damaging the yarn package.

The invention is based on the recognition that, while maintaining a high production speed, dyeing packages with cross-winding can be produced directly on a yarn processing machine with a yarn processing unit, wherein the dyeing packages have a sufficiently small diameter for dyeing. winding density. This can save the step of rewinding.

Preferably as a dyeing bobbin, an armhole reel is wound, wherein a bobbin is placed on a twisting creel and over the bobbin is fitted onto an elastic tubular structure, in particular a stocking, in which the fancy yarn Wound on a cylindrical structure. The bobbin is preferably rigid so that it is easy to remove the armhole roll from the bobbin. By pressing the dyeing bobbin as an armhole reel, the yarn package is supported and/or covered by the tubular structure after removal from the bobbin so that the dyeing bobbin can be transported more stably and easily.

The method according to the application is particularly suitable for the production of dyeing packages in which the filament threads are false-twist-textured by means of a yarn processing unit and/or the filament threads are processed into fancy yarns by means of air-covering nozzles or air-jet texturing nozzles.

It is particularly preferred that the winding angle of the dyeing bobbins is preferably set to greater than 18° during winding by means of a yarn laying device upstream of the twisting bobbin holder. The winding density of the twisted bobbin to be wound is mainly determined by the yarn tension of the fancy yarn during winding, the pressing force exerted by the support roller on the twisted bobbin and the winding of the cross-wrapped yarn on the twisted bobbin. angle to determine. A minimal impact on the yarn processing process in the yarn processing unit by reducing the winding density can be achieved by increasing the winding angle. The winding angle is defined here by the angle enclosed between the individual yarn packages of the twisting package and the radial direction of the twisting package. The larger the selected winding line angle, the smaller the winding density under other equal conditions. The result is that at larger winding angles, during the cross-winding of the yarn package, a larger cavity is formed between successive layers of the wound fancy yarn, resulting in a smaller cavity. The winding density of , thus encloses more air between the layers of the wound fancy yarn at larger winding angles than at smaller winding angles. In the case of false twist textured polyamide yarns, the maximum winding density for dyeing does not exceed 300 g/l at typical production speeds of about 500 m/min, starting from a winding angle of 18°.

Preferably, especially in the manufacture of false twist textured polyamide or Hernaquin fiber yarns, the winding density of the dyed package is set between 90 and 300 g/l, preferably between 90 and 150 g/l , so that good dyeing results are obtained, especially considering the uniform dyeing.

The yarn processing machine according to the invention for carrying out the yarn bobbin manufacturing method according to the invention has:

- at least one bobbin holder,

- a yarn processing unit for making fancy yarns from the filaments of the yarn supply bobbins prepared on said yarn supply bobbins, and

- a twist creel for winding said fancy yarn onto twist bobbins.

According to the invention, the yarn processing machine is designed to produce dyeing bobbins with cross-winding as twisted yarn bobbins. In this way, the advantages of the method according to the invention can be realized by the yarn processing machine according to the invention.

For the production of armhole packages, a bobbin is placed on the twisting creel on the yarn processing machine according to the invention, wherein an elastic tubular structure, in particular a stocking, is put on the bobbin and The yarn processing machine is configured for winding fancy yarn onto a tubular structure.

Preferably, said bobbin, onto which the dyeing bobbin is wound, has an outer diameter of between 75 and 180 mm. In this way, the inner diameter of the yarn package of the dyeing package is determined accordingly. Because the dyeing bobbin, or the armhole package, is set on a spindle during dyeing, the inner diameter of the yarn package of the dyeing bobbin must be large enough to accommodate the gap between the inside of the yarn package and the spindle during dyeing. Shrink to reserve enough space.

In the case of the yarn processing machine according to the invention, the yarn processing unit preferably has a false twist texturing unit or an air covering nozzle or an air jet texturing nozzle.

If a yarn laying device is arranged in front of the twisting creel, which has a mechanism for adjusting the yarn laying angle of the twisting bobbin, then regardless of the yarn processing technology, especially its processing speed, the winding density depends on the yarn The laying angle decreases with increasing laying angle, so that the dyeing bobbins are wound with a sufficiently low winding density. It is also advantageous if the yarn processing machine has means for adjusting the yarn tension of the fancy yarn during winding of the fancy yarn, for example a delivery roller, and/or is arranged on the twisting creel A hold-down roller and a mechanism for adjusting the hold-down force of the twisted bobbin on said hold-down roller. This can directly influence the winding density of the dye package to be wound.

If a plurality of fancy yarns or dye packages are produced simultaneously on the yarn processing machine according to the invention and a plurality of twisting creels are provided, it is advantageous if each twisting creel has an individual spindle drive. This makes it possible to individually adjust the parameters of the twist bobbins to be wound on each twist creel, in particular their winding density. Optionally, a so-called shaft drive can also be assigned to the twisting creels on such a yarn processing machine. In this case, several of the twisting bobbins are simultaneously driven by the shaft, which results in a small equipment outlay with regard to the cost of parameter flexibility of the individual dyeing bobbins.

Description of drawings

The invention is explained in detail below by means of an exemplary embodiment with reference to the drawings.

Fig. 1 is a schematic diagram of a yarn processing machine according to the invention.

2a to 2d show how to remove the armhole package from the yarn processing machine according to the invention.

The representations in the figures show the subject matter according to the invention in schematic form and are not to scale. The individual components of the subject matter according to the invention are shown in such a way that their structure can be better illustrated.

Detailed ways

FIG. 1 shows a schematic illustration of a yarn processing machine 1 according to the invention. The yarn processing machine 1 is used for carrying out the method according to the invention for the production of yarn bobbins, ie for the production of dyeing bobbins with cross-winding as twisted yarn bobbins 2 . The filament yarn 5 is processed in a yarn processing unit 6 , for example in a false twist texturing unit, from a yarn supply bobbin 4 prepared on the yarn supply bobbin creel 3 into a fancy yarn 7 . The fancy yarn 7 is wound directly onto a dyeing bobbin with cross-winding as a twisting bobbin 2 on the same yarn processing machine 1, wherein the twisting bobbin 2 is supported on the yarn processing machine 1, wherein the rotation of the twisting bobbin 2 for winding the fancy yarn 7 is preferably directly driven via a motor not shown. The twisting creel 9 thus has a single spindle drive. Wind an armhole package as a dyeing bobbin. For this, a bobbin 10 is slipped onto the twisting creel 9 and a stocking 11 is slipped on the bobbin 10 as an elastic tubular structure. Said fancy yarn 7 is wound on a cylindrical structure so that a yarn package 12 of a dyeing bobbin is produced. By means of the yarn laying device 14 on the twisting creel 9, the winding angle of the dyeing bobbin is adjusted to preferably greater than 18° during the winding process. This is achieved by the fact that the thread guide plate 15 of the thread laying device 14 is moved back and forth along the indicated double arrow 17 as a function of the production speed and the predetermined winding angle.

2a to 2d show how the armhole package 20 is removed from the twisting bobbin of the yarn processing machine according to the invention. Figure 2a shows a dyeing bobbin removed from a twisting creel, with the bobbin 10 still positioned inside the yarn package 12 and the end 21 of the stocking 11 pulled through the bobbin 10 still positioned inside the bobbin 10 .

FIG. 2 b shows the dyeing bobbin after the end 21 of the stocking 11 has been pulled out of the bobbin 10 and put over the yarn package 12 .

FIG. 2 c shows the dyeing bobbin during the process in which the rigid bobbin 10 is pressed out from the yarn package 12 , indicated by the arrow 22 .

FIG. 2 d shows the yarn package 12 , ie the armhole package 20 , of the dyeing bobbin wrapped by the stocking 11 .

The proposed method of manufacturing a bobbin on the yarn processing machine 1 is as follows:

- unwinding at least one filament thread 5 from the yarn supply bobbin 4 prepared on the yarn supply bobbin 3 of the yarn processing machine 1 .

- the fancy yarn 7 is produced from the filament thread 7 by the yarn processing unit 6 of the yarn processing machine 1, and

- manufacture of yarn bobbins by winding said fancy yarn 7 onto a twisting bobbin 2 on a twisting creel 9 of a yarn processing machine 1,

Among them, as the twisted yarn bobbin 2, a dyeing bobbin with cross-winding is wound.

The invention is not limited to the presently given examples. Instead, multiple variants are conceivable, which also use the features of the invention in fundamentally different types of embodiment.

Claims (11)

1. A yarn bobbin manufacturing method on a yarn processing machine (1), has the following steps: - unwinding at least one filament thread (5) from the yarn feed bobbin (4) prepared on the yarn feed bobbin holder (3) of the yarn processing machine (1), - manufacture fancy yarns (7) from said filaments (5) by means of said yarn processing unit (6) of said yarn processing machine (1), and - manufacture of yarn bobbins by winding said fancy yarn (7) onto a twist bobbin (2) on a twist creel (9) of said yarn processing machine (1), It is characterized in that, The dyed bobbins with cross-winding are wound as twisted bobbins (2). 2. The yarn manufacturing method according to claim 1, characterized in that an armhole package (20) is wound as a dyeing bobbin, wherein a bobbin (10) is placed on the twisting bobbin ( 9), and put an elastic tubular structure, in particular a stocking (11), onto said bobbin (10), wherein said fancy yarn (7) is wound onto said bobbin shape structure. 3. The yarn production method according to at least one of claims 1 to 2, characterized in that the filament yarn (5) is false twisted by means of the yarn processing unit (6) and/or is deformed by means of air Cover nozzles or air texturing nozzles process the filaments into fancy yarns. 4. The yarn production method according to at least one of claims 1 to 3, characterized in that, during the winding process, a yarn laying device (14) in front of the twisting creel (9) is used The winding angle of the dyeing bobbin is adjusted to be preferably greater than 18°. 5. The yarn production method according to at least one of claims 1 to 4, characterized in that the winding density of the dyeing package is set between 90 and 300 g/l, preferably between 90 and 150 g / L between. 6. A yarn processing machine for carrying out the yarn production method according to at least one of the preceding claims, having - at least one bobbin holder (3), - a yarn processing unit (6) for making fancy yarns (7) from the filaments (5) of the yarn supply bobbins (4) prepared on the yarn supply bobbins (3), and - a twist creel (9) for winding the fancy yarn (7) onto the twist bobbins (2), It is characterized in that, The yarn processing machine (1) is configured for producing a dyeing bobbin with cross-winding as a twisting bobbin (2). 7. The yarn processing machine according to claim 6, characterized in that a bobbin (10) is put on the twisting creel (9), wherein an elastic tubular structure, especially a stocking (11) is slipped onto said bobbin (10) and said yarn processing machine (1) is arranged for winding said fancy yarn (7) onto said cylindrical structure. 8. The yarn processing machine according to claim 7, characterized in that the bobbin (10) has an outer diameter of between 75 and 180 mm. 9. The yarn processing machine according to at least one of claims 6 to 8, characterized in that the yarn processing unit (6) has a false twist texturing unit or an air covering nozzle or an air jet texturing nozzle. 10. The yarn processing machine according to at least one of claims 6 to 9, characterized in that the yarn processing machine (1) has a device for adjusting the yarn during winding of the fancy yarn (7). A mechanism of thread tension, and/or a pressing roller is arranged on the twisting creel (9) and a mechanism for setting the pressing force of the twisting bobbin (2) on the pressing roller, and/or Or a yarn laying device (14) is arranged before the twisting creel (9), and the yarn laying device has a mechanism for adjusting the yarn laying angle of the twisting bobbin (2). 11. Yarn processing machine according to at least one of claims 6 to 10, characterized in that the twisting creel (9) has a single spindle drive.

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