JPH0892829A - Frizzing of carpet pile yarn and device therefor - Google Patents

Abstract

PURPOSE: To subject carpet pile yarns to efficient and uniform frizzing by making an alternate false twisting in a state of virtually equal yarn length followed by conducting a texturizing operation. CONSTITUTION: Plural pile yarns comprising nylon 6, polyestet or polypropylene fibers are fed in parallel with one another into an alternate false twister which is made up of a fixed guide 8 with plural threading holes 8a arranged circumferentially and a rotary guide 11 and equipped with a guide 9a to control the axial twist tightness for the yarn group between the guides 8 and 11. In this false twister, the pile yarns are alternately false-twisted in a state of virtually equal yarn length for the yarns on twisting side, and subsequently transferred, via a feed roller 12, into a crimper and where the pile yarns are texturized and then subjected to heat-set treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to impart alternate false twist to a yarn for carpet / pile of various fibers in a preceding step of continuous heat setting process, and subsequently to perform freeze imparting by push-type bulking process. Processing method and its device.

[0002]

2. Description of the Related Art Nylon yarn, polyester yarn, polypropylene yarn, wool yarn and the like are used as carpet pile yarns. These yarns are used to improve the texture and feel of the obtained carpet. Freezing is performed so that the pile yarn is crimped so that the piles face different directions.

In the process of manufacturing yarns for carpet piles, a plurality of yarns made of the above-mentioned raw material are alternately false twisted in a state of being aligned and further subjected to bulking (crimping) and then heat setting treatment. It is separated into the original multiple yarns and wound up. This alternate false twisting and bulkiness processing is called "freezing processing" and is an important step in manufacturing a good quality carpet.

For the carpet pile yarn, a plurality of twisted yarns of 2000 to 3500 denier made of the above material, for example, 12 to 24 yarns are lined up, and a false twisting process, which is a pre-process of a freeze imparting process, is carried out. In this false twisting process, alternating twists are continuously applied. Then, the alternately twisted yarns are supplied to a crimper for bulking, and the crimp form is heat set in a heating furnace continuously provided after the crimper, and then separated into individual yarns. And then roll it up with cheese.

[0005]

As described above, various fiber materials are used for the yarn for carpet pile, and the twist structure thereof is mainly one-twisted, two-twisted or ply-twisted. Further, a relatively thick thread having a thickness of 800 denier to 5000 denier is generally used.

A plurality of these relatively thick carpet / pile yarns are aligned and subjected to alternate false twisting, which is a pre-process of the freeze-imparting process. Is an obstacle to the process. In this alternate false twisting process, a plurality of yarns are pulled out from a plurality of packages supported by a creel, and are passed through a guide hole formed in a circumferential shape in a fixed guide, and further provided in a pair with this fixed guide. It is guided to a large number of guide holes provided in the circumference of the rotary guide, and by reciprocally rotating the rotary guide at a predetermined angle, alternate false twist is applied between the fixed guide and the rotary guide, and then supplied to the crimper. And bulky processing is performed.

The yarns are transferred as they are between the creel and the fixed guides, and in the alternate false twisting process, the yarns become substantially parallel when there are many yarns between the fixed guides and the rotating guides. At the other stage, it is transferred in a twisted shape. Then, when a large number of yarn groups are twisted in a loop shape, the yarn groups come into contact with each other and rub against each other, and the yarn layer at the surface layer portion of the yarn group is pulled and disturbed, and further the inner and outer layers are formed. A difference in twist shrinkage occurs. This difference in the twist shrinkage ratio results in a difference in the yarn length of the pile yarns, which causes a change in characteristics between the single yarns forming the same yarn.

As described above, the yarn for carpet pile is crimped after the alternate false twisting process, and after heat setting, it is separated into the original number of yarns and wound into cheese. The yarns are entangled with each other due to the yarn length difference between the inner and outer layers and the yarn length difference between the yarns in the yarn group as described above. If a yarn length difference or irregularity occurs in the alternate false twisting process as described above, this also affects the crimping process, and in the heat set state, the entanglement of the yarns becomes strong, and this is followed by this heat setting. Twisting or thread breakage occurs in the process of separating the original number of yarns into the yarn and winding it into cheese, which causes process troubles.

When yarn breakage or yarn entanglement occurs, it is necessary to stop in order to deal with this, productivity is deteriorated, and when it is stopped naturally, variation in heat setting effect occurs, and pile yarn However, there was a problem that the quality of the product and eventually the carpet became defective. The present invention provides a method for processing a carpet / pile yarn and a device therefor, which solves the problems of the conventional pretreatment process for the carpet / pile yarn, and is excellent in quality and productivity. is there.

[0010]

[Means for Solving the Problems] A method for processing a yarn for a carpet pile according to the present invention for achieving the above object is to align a plurality of yarns for a carpet pile to provide alternate false twists. Further, in the method of performing freeze imparting processing by bulking, it is characterized in that the yarns on the upstream twisting side of the alternate false twisting step are performed in a state where a yarn length difference does not substantially occur.

The carpet / pile yarn processing device is a false twisting device used in a process of aligning a plurality of carpet / pile yarns to give alternate false twists, and further performing a freeze giving process by bulking. In the device, the false twisting device is composed of a fixed guide and a rotating guide, and is provided with a twisting restriction guide in the axial direction of the yarn group between the guides.

In the twist tightening regulation guide, a large number of yarns cause a difference in the twisting shrinkage ratio of the inner and outer layer yarns during the twisting action, or entanglement occurs due to movement within the interlayer layers.
It is a member for preventing strong sliding contact, and is composed of a rod-shaped body extending in the axial direction of the yarn group twisted between the fixed guide and the rotary guide for applying the alternate false twist. The twist restriction guide is fixed to either a fixed guide or a rotary guide.

This twisting restriction guide has a function of guiding a plurality of yarns in a dispersed state by contacting and guiding the yarns without gathering them. This twist regulation guide is made of a material and shape with as little frictional resistance as possible, and the material used for various thread guides is good, and the shape is cylindrical or circular at the contact part with the yarn. Columnar ones are preferably used.

[0014]

[Operation] A twisting regulation guide provided in the axial direction of a large number of yarn groups between a fixed guide and a rotating guide that constitute the false twisting device, without twisting the yarn groups in a twisted state Since it is guided, there is little difference in yarn length, and since the yarns do not contact each other strongly and rub, there is no yarn breakage or entanglement, and the crimper and heat set following the alternate false twisting process. The subsequent separation of the yarn becomes easy.

[0015]

EXAMPLES Next, examples of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an outline of a manufacturing process of a carpet / pile yarn, and FIG. 2 is a plan view thereof, showing a plurality of carpet / pile yarns 2 mounted on the creel 1, for example, 12 to 24 yarns. Are simultaneously drawn out, false twisted and crimped by a freeze imparting device 3 for pre-processing, and further heat-set by a heat treatment device 4, and then in a yarn separation zone 5 having a length of about 10 to 20 meters. 1
This is separated into one yarn and wound up in the form of cheese by the winding device 6. The processing speed of these series is about 100 to 400 m / min.

FIG. 3 is a view showing a freeze applicator, and the false twisting process is drawn in the state of the yarn in the conventional process for convenience of explanation. The carpet pile yarn 2 drawn out from the creel 1 is guided in a state where it is separated into individual yarns by a comb-shaped guide 7, and if necessary, a hole 8a for passing the yarn 2 through the guides 7a, 7b is formed into a circle. Fixed guides 8 arranged in a circle
And is further guided to a rotation guide 11 provided subsequent to the fixed guide 8. This rotation guide 11 has holes 11c through which the yarn 2 is inserted and is arranged circumferentially, and is provided with a gear 11a, which is reciprocally driven by the half-moon gear 10 via an intermediate gear 11b. By rotating the half-moon gear 10 back and forth as shown by an arrow, the rotation guide 11
A reciprocating rotary motion of about 360 ° is applied to the yarn 2a between the fixed guide 8 and the rotating guide 11 to give a forward and reverse twist. Needless to say, the twisting direction is opposite between the inlet side and the outlet side of the rotation guide 11, and the yarn containing the alternate twist twisted on the outlet side is supplied to the subsequent crimper.

The yarn 2 alternately false-twisted by the rotation guide 11 as described above is supplied to the pressure box 13 by the feed roller 12 which constitutes the crimping device C, and is added to the outlet side of the pressure box 13. Pressure processing is performed while adjusting the pressing force of the pressure plate 13a with the pressure adjusting weight 14, and the pressure processing is discharged from the terminal end of the pressure box 13 and is supplied to the heat treatment apparatus 4 by the conveyor 16 via the shooter 15. The carpet pile yarn 2 thus freeze-processed by the freeze applying device 3 is heat set to a predetermined shape by the heat treatment device 4.

Next, the structure of the false twisting device, which is a pre-process of the freeze applicator according to the present invention, will be described. FIG. 4 shows a first embodiment of the present invention, in which a plate-like fixed guide 8 shown in FIG. 5 is fixed to the front of a supporting body 21 by a bracket 20, and the supporting body 21 has a gear 11a. A cylindrical rotating body 11d is supported by a bearing 22, and the rotation guide 11 is attached to the front part of the rotating body 11d.
This rotation guide 11 has a guide hole 11c as shown in FIG.
Are arranged in a circle.

At the center of the guide hole 8a provided in the fixed guide 8, a "twist narrowing regulation guide 9a" having a circular cross section and a rod shape, which is particularly applied in the present invention, is provided extending to the vicinity of the rotation guide 11. Cages with alternate false twists
Rotating guide 1 while pile yarn 2 slides on its surface
I'm trying to guide me out to 1. Further, the yarn 2 that is false twisted is formed on the exit side of the yarn 2 of the support 21.
A guide 23 for guiding the sheet is provided extending to the pressing portion of the feed roller 12. In this embodiment, a plate-shaped guide 2 having a frustoconical guide hole for smoothly supplying the yarn 2 to the front of the rotation guide 11.
5 is provided.

FIG. 7 shows a false twisting device in which the twisting restriction guide 9b is a rod-shaped body having a gentle conical or tapered shape, and is a modification of the twisting restriction guide 9a in FIG. Also, FIG. 8 shows two flanges 2 in the middle part.
4 shows a false twisting device provided with a twist tightening regulation guide 9c in which 4, 24a are arranged at intervals. This flange 2
It is preferable that the upstream side flange 24 has a large diameter and the downstream side flange 24a has a small diameter according to the movement state of the yarn 2 so that the yarn can be guided most easily.

FIG. 9 shows a modification of the twisting restriction guide 9c shown in FIG. 8. The length of the rod-shaped restriction guide 9d is shorter than that of the above embodiment, and a flange 24b is provided at the intermediate position. It is a thing. 4 to 9 show the false twisting device in which the twist tightening control guides 9a to 9d are provided on the fixed guide 8 side, but in the embodiment shown in FIG. 10, the twist tightening control guide 9e provided on the rotary guide 11 side is used. Shows.

The twisting restriction guides 9a to 9e are provided to prevent the yarns 2 from slidably contacting each other and becoming entangled with each other, and a metal rod or a ceramic rod, or a metal rod whose surface is coated with ceramics. For example, those that do not have a bad influence even when the yarn 2 comes into contact with the surface thereof are used.
The smaller the distance between the rotation guide 11 and the inlet of the twisting restriction guide 9, the better, and the range of about 3 to 5 mm is preferable.

Next, the freeze applying step according to the present invention and the freeze applying step according to the conventional method will be described in comparison.
11 and 12 are explanatory views showing the state of the yarn 2 of the false twisting device constituting the freeze applicator of the present invention, and FIGS. 13 to 15 are explanatory diagrams showing the false twisting state of the conventional device. 13 shows the fixed guide 8
The yarn 2 transferred between A and the rotation guide 11A is shown. In this state, the yarns 2 are transferred in a conical shape between the fixed guide 8A and the rotation guide 11A. In the twisted state, as shown in FIG. 14, the yarns 2 are twisted like ropes and come into contact with each other to form a filled twisted yarn state in which they are entangled with each other as shown in FIG.

As described above, when the yarns 2 are in the filled twisted yarn state, a yarn length difference occurs due to a difference in the twist shrinkage ratio between the inner and outer layers of the bundle of the falsely twisted yarns, which causes a difference in the speed of the supplied yarns. As a result of the entanglement of the yarns, a part that is strongly entangled may be generated, or a cutting yarn may be generated in some cases. In the present invention, as shown in FIG. 11, since the twist narrowing restriction guide 9 is provided at the portion where the twist is applied to the thread 2, the thread 2 is regulated in the false twist step as shown in FIG. Circularly distributed around the guide 9. This state is shown in Figure 1.
As can be understood by comparing with the twisted state of the conventional device shown in FIG. 4 and FIG. 15, the plurality of yarns 2 are twisted without being entangled and filled.

Therefore, the yarns 2 are simultaneously shrunk with the same length as the yarns are twisted, and no yarn length difference occurs between the individual yarns 2. Further, since the yarns are not in the entangled filling state as shown in FIG. 15 and are twisted in the state arranged as shown in FIG. 12, the entangled state does not occur. For various carpet and pile yarns,
The data of the number of operation stoppages due to yarn breakage during freeze imparting processing by the method of the present invention and the conventional method are as follows, and it was confirmed that the present invention is superior to the conventional method in any case. did it.

A) Alternate false twisting is performed by using two ply-twisted structures in which two 1050 denier nylon-6 yarns are twisted with a lower twist of 200 and an upper twist of 200 (t / m) as a supply yarn. Comparing the number of operation stoppages due to yarn entanglement or yarn breakage when processing yarns per ton by the applied freezing process, the number is 1.0 in the conventional method, whereas the present invention is 0. The numbers were 2 and 1/5.

B) Freezing with alternate false-twist processing using two 1000-denier polyester yarns with a ply-twisted structure with a ply-twisted 200 and a ply-twisted 200 (t / m) as a supply yarn. Comparing the number of operation stoppages due to yarn entanglement and yarn breakage when processing yarns per ton by processing, it was 0.3 times in the present invention, compared with 1.5 times in the conventional method. Met.

C) Two 2,000 denier polypropylene yarns were twisted with a lower twist 170 and an upper twist 170 (t / m) to form a ply-twisted structure, which was used as a supply yarn and subjected to alternate false twisting. Comparing the number of operation stoppages due to yarn entanglement or yarn breakage when processing yarns per ton by freeze imparting processing, it was 5.0 times in the conventional method, but 0.8 times in the present invention. there were.

[0029]

INDUSTRIAL APPLICABILITY According to the present invention, a plurality of carpet / pile yarns that are continuously running are aligned to give alternate false twists in the pre-process of continuously heat-setting the carpet / pile yarns, thereby providing bulkiness. In the method of performing freeze imparting processing by processing, there are a method and an apparatus therefor in which the yarns on the upstream twisting side of the false twisting step do not substantially cause a yarn length difference, and the following effects can be obtained. .

During false twisting and twisting, a large number of yarns are twisted in a state of being distributed around the twisting restriction guide, so that a plurality of yarns are twisted and contracted with a uniform length, It was possible to process with no difference in yarn length. Therefore, the entanglement between the yarns is small, the yarn breakage and the entanglement of the strength are small when the yarns are separated into the individual yarns after the heat setting after the freeze imparting process, and the opportunity to stop the operation of the device is significantly reduced. When the chances of stopping the operation of the freeze application processing device were reduced, it was possible to efficiently manufacture products of uniform quality, and it was possible to manufacture high-quality carpet / pile yarns.

[Brief description of drawings]

FIG. 1 is a side view showing an entire continuous setter of carpet pile yarns.

FIG. 2 is a plan view showing an entire continuous setter of carpet pile yarns.

FIG. 3 is an explanatory diagram of a freeze imparting processing step.

FIG. 4 is a side sectional view showing a main part of a false twisting device.

FIG. 5 is a front view of a fixed guide.

FIG. 6 is a front view of a rotation guide.

FIG. 7 is a side sectional view showing a main part of a false twisting device.

FIG. 8 is a side sectional view showing a main part of the false twisting device.

FIG. 9 is a side sectional view showing a main part of a false twisting device.

FIG. 10 is a side sectional view showing a main part of a false twisting device.

FIG. 11 is an explanatory diagram showing twisting behavior of the false twisting device of the present invention.

FIG. 12 is a cross-sectional view showing a yarn group around a twisting restriction guide.

FIG. 13 is an explanatory diagram showing twisting behavior of a conventional false twisting device.

FIG. 14 is an explanatory diagram showing a twisting behavior of a conventional false twisting device.

FIG. 15 is a cross-sectional view showing a twisting behavior of a conventional false twisting device.

[Explanation of symbols]

1 Creel 2 Carpet / pile yarn 3
Freezing device 4 Heat treatment device 5 Yarn separation zone 6 Winding device 11 Rotating guide 11c Guide hole 11d Rotating body 12 Feed roller 13 Pressing box 13
a Pressure plate 14 Pressure adjusting weight 15 Shooter 16
Conveyor 20 Bracket 21 Support 22 Bearing 2
3 guide 24 flange

Claims (2)

[Claims] 1. A pre-process for continuously heat-setting a carpet / pile yarn, a plurality of continuously running carpet / pile yarns are aligned to give alternate false twist, and subsequently bulky. In the method of performing a freezing process by processing, the yarn for the twisting side in the alternate false-twisting process is performed in a state in which a yarn length difference does not substantially occur, and the carpet-pile yarn freezing process is performed. Method. 2. The carpet / pile yarns are continuously heat-set in the preceding step, and a plurality of carpet / pile yarns that are continuously running are aligned to give alternate false twist, and subsequently bulky. In the alternate false twisting device used in the process of performing freeze imparting processing, this alternate false twisting device is composed of a fixed guide and a rotating guide, and a twist narrowing regulation guide is provided in the axial direction of the yarn group between the guides. Equipment to freeze and install carpet and pile yarns.