WO2007147426A1

WO2007147426A1 - Yarn spool production method and yarn processing machine

Info

Publication number: WO2007147426A1
Application number: PCT/EP2006/006044
Authority: WO
Inventors: Robin Gutbrod
Original assignee: SSM Schärer Schweiter Mettler AG
Priority date: 2006-06-23
Filing date: 2006-06-23
Publication date: 2007-12-27
Also published as: TW200812896A; EP2035311A1; CN101472819A

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

Garnspulenherstellsqsverfahren and Garnbearbeitunqsmaschine

The invention relates to a yarn package manufacturing process and a yarn processing machine for carrying out the yarn package production process. In the yarn package manufacturing method, the steps of unwinding at least one filament yarn from a supply bobbin provided on a supply bobbin holder of the yarn processing machine, producing a fancy yarn by a yarn processing unit of the yarn processing machine from the filament yarn, and preparing a yarn package by winding the effect yarn onto a takeup spool on a takeup spool holder of the yarn processing machine; carried out. To produce the effect yarn, for example, the texturing or the wrapping of at least one core thread with wrapping threads by means of an air-covering nozzle are used. Thus, fancy yarn is understood as meaning a yarn which is produced by mechanical and / or thermal processing from at least one multifilament yarn. Yarn processing machines for carrying out such methods include, for example, a false-twist texturing unit, an air-texturing nozzle or an air-covering nozzle as a yarn processing unit. The fancy yarns to be produced may be, for example, yarns of polyamide (PA), eg nylon, of henequene (HE) or elastane, ie of yarn of polyurethane, or of multicomponent yarns made of various of these yarns, the PA yarns can be false-wire textured, ie it can be DTY yarns (Draw Textured Yarn). The yarns produced in this way are usually further treated in downstream processes, for example dyeing of the effect yarns is frequently carried out.

The false-twist texturing serves to produce from a plastic-like, flat and smooth multifilament yarn a crimped and structured effect yarn which, due to its voluminous and bulky structure (Bausch), has a textile character. For this purpose, the multifilament yarn (thread) is generally unwound from a supply bobbin, passed through a first delivery mechanism, then heated in a heater (primary heater), cooled on a cooling rail, guided by a swirl transmitter and a second delivery mechanism arranged behind it, a so-called trigger delivery unit. to be subsequently wound up on a yarn package. The heater, the cooling rail and the Swirlers form the false-twist texturing unit. The swirl generator serves to temporarily turn up the multifilament yarn in one operation, ie to produce a twist of the multifilament yarn, or of the individual filament yarns, by transmitting an axial torque to the filament yarns. This temporary twisting (twisted state) is called false-twisted wire (FD). By the rotation, a rotation column is formed, which extends back to the heater (swirl zone), thereby allowing the twisted state of the filament yarns is thermally fixed in front of the swirl generator by heating and cooling. Behind the twist donor, the twist is then resolved again. Due to the thermal fixation in the twisted state, the yarn has the desired crimped structure. Very high production speeds are possible by using a friction twist generator as a swirl generator. In these swirlers, the filament yarn is driven directly by means of friction surfaces. Due to the smaller diameter of the thread compared to the spindle, ie, for example, a disc of a Scheibenfriktionsaggregats, a high transmission ratio between the rotation of the disc and the twisting of the filament yarn is realized. The three-axis disc friction unit is particularly well suited for this purpose. As a swirl generator are therefore mainly friction twist, especially three-axis disk friction units, but also so-called nip twister, which transmit torque by means of crossed belt on the filament yarns used. Such a thing

Disk friction unit is disclosed for example in DE 3743708 Al. A nip twister is shown in JP 06184848 A. The twist distribution By friction allows very high rotational and thus high production speeds.

Further, yarn processing machines for processing filament yarns having an air-texturing nozzle (air-texturing machine) are known. Such an air-texturing machine is disclosed in DE 39 09 516 A1. Air texturing machines are used to consistently curl smooth structureless filament yarns. Several original yarns (core threads) can be processed with filament yarns (effect threads) of different traditions into a textured effect yarn. In this process, the filament yarns are uniformly crimped and, if necessary, arranged around the original yarns. The sheaths may comprise different yarns. The filament yarns, ie the sheath threads and the core thread, are conveyed via delivery mechanisms, e.g. Galetten, fed to a Lufttexturierdüse. After the yarns have passed through the air texturing die, the multi-component multifilament yarn produced, i. a multicomponent yarn, taken from a spool on which the multicomponent yarn is wound. Before winding, the multicomponent yarn can be stretched, fixed, shrunk and / or sharpened again.

Machines with an air-covering nozzle (air-covering machine) are used to connect filament yarns consistently to one another to a multi-component yarn (air-covering yarn). In this case, at least one sheath thread is connected to a core thread as components. The aim of this process is to be as even as possible Link nodes in the multi-component yarn to achieve and so connect the components together. An example of an air-covering machine is disclosed in US 6,405,519 Bl. The core thread is usually an elastomer-containing yarn. The sheaths may comprise different yarns. The filament yarns, ie the sheath threads and the core thread, are fed via delivery mechanisms, eg godets, to an air-covering nozzle. After the multicomponent yarn has passed through the air-covering nozzle, the multicomponent yarn is taken up by a spool on which the multicomponent yarn is wound up. Before winding, the multicomponent yarn can be fixed, shrunk and / or sharpened again. In the air-covering nozzle, the sheaths are connected to the core thread with the help of an air jet. The air jet is guided in the air-covering nozzle with a jet direction that is not parallel to an air-covering nozzle axis of the air-covering nozzle. The air-covering nozzle axis of the air-covering nozzle is defined by a channel in which the filament yarns are passed through the air-covering nozzle.

When winding onto the take-up spool, a yarn spool is produced in the known Garnspulenherstellungsverfahren in which the

Effect yarn is wound on a tubular bobbin tube. The effect yarn is wound up so tightly that it firmly encloses the bobbin tube, wherein coil densities, i. the weight of the wound up yarn

(Package) per volume of the wound yarn, ie the package, of over 300 grams per liter (g / l), e.g. are common in a manufactured false-twist textured HE effect yarn. These high

Coil densities are eg due to the high production speed of the Fancy yarns of eg 500 meters per minute conditionally, resulting in a relatively high yarn tension during the manufacturing process, which in turn leads to a large package density.

A disadvantage of the yarn packages produced in this way is that they are not suitable directly for use for dyeing the wound up fancy yarn. The main problem in dyeing, in particular, highly elastic false-twist texturized fancy yarn is its shrinkage, whereby the original volume of the yarn package may decrease by up to about 40%. This shrinkage is caused, for example, by the usual process temperature of dyeing from 100 to 130 ° Celsius. When dyeing bobbins with an inelastic, ie rigid bobbin tube, the inner layers of the yarn winding of the yarn package can not shrink. The shrinkage takes place in the outer layers of the yarn winding, whereby the inner layers are compressed. In extreme cases, eg with false-twist textured PA yarns, the inner layers of the yarn package are pressed completely flat. This results in an uneven dyeing of the effect yarn. In dyeing plants, the yarn packages are rewound to less densely wound dye packages to avoid these problems. These dyeing coils also have no rigid bobbin tube. The latter is achieved in that the package is pushed down after being wound up by a bobbin case used during winding. Such a dyeing formulation is also referred to as a muff. Such a muff is thus produced by rewinding a relatively dense yarn package onto a dyeing bobbin, ie an additional rewinding process is carried out. Muffs are on standard winders using bobbins with made of larger diameters. Approximately one kg of effect yarn with a package density of approx. 120 grams per liter is wound on these bobbin tubes. In the production of a muff, a rigid bobbin tube is usually first attached to a bobbin holder of a corresponding rewinding device. An elastic stocking is pulled over this rigid bobbin tube, with one end of the stocking being inserted into the respective end of the bobbin tube, so that the ends do not interfere with the winding process. In general, instead of a textile stocking, an elastic cylinder structure, for example a hose or any elastic cylindrical structure, can be used, which is suitable for replacing the stocking, for example a plastic net. After the dyeing bobbin is wound up with a package density suitable for dyeing, the bobbin tube, together with the stocking and the wound package, is taken down from the bobbin holder of the rewinding apparatus. Thereafter, the ends of the stocking are pulled out of the bobbin tube and slipped over the bobbin and the rigid bobbin tube is pushed out of the package. The wrapped by the sock yarn package, so the muff, is suitable for dyeing, since it is wound with relatively low density and the inner layers of the coil winding are not hindered in shrinking.

The invention has for its object to provide a Garnspulenausstellungsverfahren and a yarn processing machine for

Implementation of the yarn package manufacturing process, which avoid the disadvantages of the prior art, in particular no rewinding of the produced fancy yarn is necessary before its dyeing.

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

In the yarn package manufacturing method of the present invention, the following process steps are performed on a yarn processing machine:

Unwinding at least one filament yarn from a supply spool held on a supply bobbin case holder of the yarn processing machine, producing a fancy yarn by a yarn processing unit of the yarn processing machine from the filament yarn, and

- Producing a yarn package by winding the effect yarn on a take-up reel on a take-up reel holder of the yarn processing machine. According to the invention as a take-up spool with a dyeing spool

Spool wound up. Thus, on the yarn processing machine, the effect yarn is produced from the filament yarn and the dyeing package is wound directly on the same yarn processing machine, whereby the rewinding according to the prior art is omitted. The dyeing coil is wound up so softly with a relatively small package density that the bobbin can be removed from a bobbin tube without damaging the bobbin. The invention is based on the finding that, while maintaining a high production speed, a dyeing bobbin with cross winding can be produced directly on a yarn processing machine with a yarn processing unit, the dye bobbin having a sufficiently low bobbin density for dyeing. As a result, the rewinding can be omitted.

Preferably, a muff is wound as a dyeing bobbin, wherein a bobbin tube is slipped onto the receiving coil holder, and an elastic cylinder structure, in particular a stocking, is wound onto the bobbin tube and the effect yarn is wound onto the cylindrical structure. The bobbin tube is preferably rigid, which simplifies removal of the muff from the bobbin tube. Due to the characteristic of the dyeing bobbin as a muff, the bobbin is supported and / or enveloped after removal from the bobbin tube by the cylindrical structure, as a result of which the dyeing bobbin is more stable and easier to transport.

The method according to the invention is particularly suitable for producing dye packages, wherein the filament yarn is false-twisted by means of the yarn processing unit and / or the filament yarns are processed into the effect yarn by means of an air-covering nozzle or an air-texturing nozzle.

Particularly preferably, the yarn take-up angle of the dyeing bobbin is preferred by means of a yarn laying device in front of the take-up bobbin holder set to greater than 18 ° during winding. The package density of a take-up spool to be wound up is determined essentially by the yarn tension of the effect yarn during winding, a contact pressure of a back-up roll on the take-up spool and the thread take-up angle of the cross winding on the take-up spool. The least influence on the yarn processing process in the

Garnbearbeitungseinheit by reducing the coil density can be achieved by increasing the Fadenaufspulwinkels. The Fadenaufspulwinkel is defined by the enclosed between the individual thread windings on the take-up spool and the radial direction of the take-up spool angle. The larger the thread take-up angle is selected, the lower the package density will be under otherwise identical conditions. The latter follows from the fact that at a larger Fadenaufspulwinkel larger cavities are included in the cross winding of the thread windings between successive layers of the wound up fancy yarn, which is trapped between the layers of the wound fancy yarn at larger Fadenaufspulwinkeln more air than at smaller Fadenaufspulwinkeln. In the case of false-twist textured PA yarn, a maximum package density of 300 g / l for dyeing is undershot at a conventional production rate of about 500 m / min from a yarn take-up angle of 18 °.

The coil density of the dyeing bobbin is preferably set to between 90 and 300 g / l, preferably 90 to 150 g / l, especially in the case of false-twist texturized PA or HE yarn, which leads to good dyeing results, in particular with regard to uniform dyeing. A yarn processing machine according to the invention for carrying out the yarn package production method according to the invention comprises:

at least one supply bobbin case holder, a yarn processing unit for producing a fancy yarn from a filament yarn of a supply bobbin kept ready on the supply bobbin case holder, and

- A pickup coil holder for winding the effect yarn on a take-up spool. According to the invention, the yarn processing machine is designed to produce a dyeing coil with a cross winding as a take-up spool. Thereby, the advantages of the method according to the invention can be achieved with the yarn processing machine according to the invention.

To produce a muff, a bobbin tube is attached to the bobbin holder in the yarn processing machine according to the invention, wherein an elastic cylinder structure, in particular a stocking, is wound onto the bobbin tube and wherein the yarn processing machine is arranged to wind up the effect yarn onto the cylinder structure.

Preferably, the bobbin tube on which the dyeing bobbin is wound, an outer diameter between 75 and 180 mm. As a result, the inner diameter of the bobbin of the dyeing bobbin is determined accordingly. Since the dyeing bobbins, respectively the muffs, are attached to a spindle during dyeing, the inner diameter of the bobbin of the dyeing bobbin must be sufficiently large, so that sufficient Space for shrinking between bobbin inside and spindle during dyeing remains.

In a 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 texturing nozzle.

If a thread laying device is arranged with means for adjusting a Fadenverlegewinkels the take-up reel in front of the receiving spool holder, can without affecting the

Garnbearbeitungsprozesses, in particular its process speed, the coil density can be reduced by increasing the Fadenverlegewinkels so that a dyeing spool is wound with a sufficiently low coil density. In addition, it is advantageous if the yarn processing machine comprises means for adjusting the yarn tension of the effect yarn, e.g. a delivery mechanism, has at its winding and / or that a contact roller and means for adjusting a contact force of the take-up spool are arranged on the contact roller to the contact roller. As a result, the coil density of the aufzuspulenden Färbespule be directly influenced.

If a plurality of effect yarns or dye packages are simultaneously produced in a yarn processing machine according to the invention and thus a plurality of receiving coil holders are present, it is advantageous if the receiving coil holders each have a single spindle drive. Then parameters of the aufzuspulenden on the respective receiving coil holder dyeing coil, in particular their coil density, individually be set. Alternatively, it is also possible to provide a so-called shaft drive of the receiving coil holder in such a yarn processing machine. In this case, several of the pickup coils are driven simultaneously via a shaft, which at the expense of the flexibility of the parameters of the individual dyeing coils leads to a lower aparativen expenditure.

The invention will be explained in more detail using an exemplary embodiment with reference to the drawings.

Figure 1 shows a yarn processing machine according to the invention schematically.

Figures 2a to 2d show how a muff is removed from the take-up reel of the yarn processing machine according to the invention.

The figures of the drawings show the subject matter of the invention in a highly schematic manner and are not to scale. The individual components of the article according to the invention are shown so that their structure can be well shown.

FIG. 1 schematically shows a yarn processing machine 1 according to the invention. The yarn processing machine 1 is designed for carrying out the yarn package production method according to the invention, that is to say for producing a dyeing package with a cross winding as the take-up spool 2. From a ready on a supply bobbin case holder 3 held supply spool 4, a filament yarn 5 in a yarn processing unit 6, for example, a false twist texturing unit, processed into a fancy yarn 7. The effect yarn 7 is wound in the same yarn processing machine 1 directly on a dyeing spool with cross winding as take-up spool 2, wherein the take-up spool 2 is mounted in a take-up spool holder 9 of the yarn processing machine 1, wherein the rotation of the take-up spool 2 for winding the effect yarn 7 preferably via a not shown Motor is driven directly. The pickup coil holder 9 thereby has a single spindle drive. As a dyeing bobbin a muff is wound up. For this purpose, a bobbin tube IO is attached to the receiving coil holder 9 and the bobbin tube 10 is a stocking 11, pulled up as an elastic cylinder structure. The effect yarn 7 is wound on the cylinder structure, whereby the bobbin 12 of the dyeing bobbin is produced. By means of a yarn laying device 14 on the take-up reel holder 9, the yarn take-up angle of the dyeing bobbin is preferably set to greater than 18 ° during winding. This is done by a thread guide 15 of the thread laying device 14 depending on the

Production speed and the desired Fadenaufspulwinkel is reciprocated according to the double arrow 17 shown.

FIGS. 2a to 2d show how a muff 20 is removed from the take-up spool of the yarn processing machine according to the invention. FIG. 2 a shows the dyeing bobbin removed from the take-up spool holder, wherein the bobbin tube 10 is still arranged inside the yarn package 12 and the ends 21 of FIG the bobbin 10 pulled stocking 11 are still arranged in the bobbin 10.

In Figure 2b, the dyeing bobbin is shown after the ends 21 of the

Stocking 11 were pulled out of the bobbin tube 10 and slipped over the bobbin 12.

In Figure 2c, the dyeing bobbin is shown, while the rigid bobbin tube

10 is pressed out of the package 12, which is symbolized by an arrow 22.

In FIG. 2d, the package 12 wrapped by the stocking 11 of the dyeing bobbin, that is to say the muff 20, is shown.

A yarn package manufacturing method is proposed on a

Yarn processing machine 1 with the method steps - unwinding at least one filament yarn 5 from one on one

Bobbin tube holder 3 of the yarn processing machine 1 ready held bobbin 4,

Manufacture of a fancy yarn 7 by a yarn processing unit 6 of the yarn processing machine 1 from the filament yarn 7, and manufacture a yarn package by winding the effect yarn 7 onto a yarn package

Take-up spool 2 on a take-up spool holder 9 of

Yarn processing machine 1, wherein as a take-up spool 2, a dyeing spool is wound with cross-winding. The invention is not limited to the embodiments given above. Rather, a number of variants are conceivable, which make use of the features of the invention even with fundamentally different type of execution.

Claims

claims

A yarn package manufacturing method on a yarn processing machine (1) comprising the method steps

- Unwinding at least one filament yarn (5) from a supply bobbin (4) held ready on a supply bobbin sleeve holder (3) of the yarn processing machine (1),

- Producing a fancy yarn (7) by a yarn processing unit (6) of the yarn processing machine (1) of the filament yarn (5), and

- Producing a yarn package by winding the Effektgams (7) on a take-up spool (2) on a take-up spool holder (9) of the yarn processing machine (1), characterized in that as a take-up spool (2) a dyeing spool is wound with cross-winding.

2. Garnspulenherstellungsverfahren according to claim 1, characterized in that as Färbespule a muff (20) is wound, wherein on the Aufnahmespulenhalter (9) a bobbin tube (10) is fitted, and on the bobbin tube (10) has an elastic cylinder structure, in particular a stocking (11), and wherein the effect yarn (7) is wound on the cylinder structure.

3. Garnspulenherstellungsverfahren according to at least one of claims 1 to 2, characterized in that by means of the yarn processing unit (6) the filament yarn (5) is false-wire texturing and / or the Filamentgame by means of a

Air-Covering nozzle or a Lufttexturierdüse be processed to the effect yarn.

4. Garnspulenherstellungsverfahren according to at least one of claims 1 to 3, characterized in that by means of a thread laying device (14) before the take-up spool holder (9) the Fadenaufspulwinkel the dyeing spool is preferably set to greater than 18 ° when winding.

5. Garnspulenherstellungsverfahren according to at least one of claims 1 to 4, characterized in that the coil density of the dyeing bobbin to between 90 and 300 g / l, preferably 90 to 150 g / l, is set.

6. yarn processing machine for carrying out the yarn package manufacturing method according to at least one of the preceding claims with - at least one supply bobbin case holder (3),

- a yarn processing unit (6) for producing a fancy yarn (7) from a filament yarn (5) one on the Bobbin case holder (3) ready held bobbin (4), and

- A take-up spool holder (9) for winding the effect yarn (7) on a take-up spool (2), characterized in that the yarn processing machine (1) for producing a dyeing spool with cross-winding as a take-up spool (2) is arranged.

7. yarn processing machine according to claim 6, characterized in that on the Aufnahmespulenhalter (9) a bobbin tube (10) is attached, wherein on the bobbin tube (10) an elastic cylinder structure, in particular a stocking (11) is mounted, and wherein the yarn processing machine ( 1) is arranged for winding up the effect yarn (7) on the cylinder structure.

8. yarn processing machine according to claim 7, characterized in that the bobbin tube (10) has an outer diameter between 75 and 180 mm.

9. 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 a Lufttexturierdüse.

10. Yarn processing machine according to at least one of claims 6 to 9, characterized in that the yarn processing machine (1) has means for adjusting the thread tension of the effect yarn (7) during its winding and / or that on the receiving coil holder (9) has a pressure roller and means for adjustment a contact force of the take-up spool (2) are arranged on the pressure roller and / or that in front of the take-up spool holder (9) a thread-laying device (14) with means for adjusting a thread-laying angle of the

Pickup coil (2) is arranged.

11. Yarn processing machine according to at least one of claims 6 to 10, characterized in that the receiving coil holder (9) has a single spindle drive.