JP2001106430A - Fluff control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluff control device capable of stabilizing yarn running between discs from the beginning of running of the yarn. SOLUTION: The yarn Y running between each of the discs 6 is supported by each of yarn supporting levers 14-16 of a yarn supporting guide 3. The yarn Y is thereby stably placed in a center part A between each of the discs 6 from the beginning of running of the yarn Y.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluff control device for a spun yarn in a winder such as an automatic winder.

[0002]

2. Description of the Related Art For example, a yarn supplying bobbin wound with a spun yarn produced by ring spinning is conveyed to an automatic winder (winding machine). In the automatic winder, a large number of yarns are detected while detecting defects of the spun yarn. By splicing the yarn feeding bobbin, it is rewound as a cone or cheese-like package. The rewinding by an automatic winder is a process of applying a tension to a spun yarn unwound from a yarn supplying bobbin and guiding the spun yarn with a large number of yarn guides to form a package. Therefore, each time a spun yarn in which short fibers are twisted passes through a yarn guide or the like, friction occurs, and the fluff existing in the spun yarn of the yarn supplying bobbin before rewinding tends to increase after rewinding.

For this reason, in the rewinding process using a winder such as an automatic winder, a fluff control device is provided in the yarn traveling path to suppress the generation of fluff. As a fluff control device, by spinning a plurality of friction disks, a false twist is applied to a spun yarn running between the respective disks,
There has been proposed a method of performing a fluffing-down treatment by involving fluff in a fiber. This fluff control device applies a false twist at the rotation of each disk and simultaneously sends out a spun yarn, and according to the rotation speed of each disk and the traveling speed of the spun yarn,
It controls the tension of the spun yarn to be wound around the package.

[0004]

However, if the spun yarn is run from the start of rewinding and the disks are simultaneously rotated, the spun yarn may jump out from between the disks. This is because the spun yarn immediately after the start of rewinding has extremely low tension and is moved following the rotation of each disk. Therefore, if the spun yarn jumps out from between the disks, the spun yarn cannot be continuously wound, as well as the fluff binding process.

[0005] It is an object of the present invention to provide a fluff control device capable of stabilizing a yarn traveling between the disks from the start of the yarn traveling.

[0006]

A fluff controller according to the present invention applies false twist to a spun yarn running between the disks and simultaneously applies a feeding force to the yarn by rotating a plurality of disks. It acts on the start of yarn running,
Guide means for holding the yarn at the center between the discs is provided. At the start of the running of the yarn, the yarn running between the disks is stabilized by holding the yarn by the guide means.

In the fluff control device of the present invention (claim 2),
When the tension of the yarn reaches an appropriate value after the start of running of the yarn, the guide means is brought into a non-operation state. When the tension of the yarn reaches an appropriate value, the yarn runs stably between the disks. When the yarn runs stably, the guide means is deactivated and the contact with the yarn is eliminated, thereby preventing excessive damage to the yarn.

[0008] In the fluff control device of the present invention (claim 3),
The guide means pushes the yarn into the center between the disks before the yarn starts running. By pushing the yarn between the discs before the yarn traveling starts, a more stable yarn traveling can be obtained at the start of the yarn traveling. If the disk is rotated at a low speed when the thread is pushed in, the thread breakage during pushing can be prevented. The fluff controller according to claims 1 to 3 is applied to a winding machine that forms a package by winding a spun yarn unwound from a yarn supplying bobbin onto a winding tube that is rotated by a driving unit. . Particularly, when the present invention is applied to an automatic winder having a yarn monitor for detecting a defect of a yarn and a yarn splicing device for automatically splicing a yarn end on a yarn supplying bobbin side and a yarn end on a package side, excellent effects are exhibited. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A fluff controller according to an embodiment of the present invention will be described with reference to FIGS.

The fluff controller 1 shown in FIG. 1 is provided on a winding machine 31A such as an automatic winder, and is used to unwind a yarn spun from a yarn feeding bobbin B and form a package P on a winding tube Bf. A false twist is applied, and at the same time, a feeding force is applied to the spun yarn Y. The winding machine 31A shown in FIG. 1 includes a winding tube Bf for winding the spun yarn Y of the yarn supplying bobbin B,
A drive drum D for rotating the winding tube Bf is provided. When the yarn Y is wound on the winding tube Bf, the package P is formed. When the package P is formed, the driving drum D contacts the package P and rotates the package P. A traverse groove is formed in the drive drum D, and the drive drum D is formed as a traverse drum that also serves as a traverse device. The fluff control device 1 is disposed in a yarn traveling path between a driving drum D for rotating a package P and a yarn supplying bobbin B, and is provided with a false twist device 2, a yarn holding guide 3 functioning as guide means, and a twist stopping device 4. It is composed of

As shown in FIGS. 2 and 3, the false twisting device 2 includes a plurality of (six in the illustrated example) friction disks 6 and three first to third shafts 7 to 9. I have. A plurality of (two) friction disks 6 are provided on each of the first to third shafts 7 to 9. First to third shaft 7
9 are rotatably supported between the block body 10 and the support body 11 and are simultaneously rotated by a drive motor, a belt, and the like (not shown) on the block body 10 side. Also, first to third shafts 7 to
Numeral 9 is provided at each of the vertexes a to c of the equilateral triangle, and the discs 6 having different axes are arranged so as to partially overlap in the radial direction (see FIG. 2). Each of the disks 6 is arranged on the first to third shafts 7 to 9 so as to be sequentially shifted in the axial direction (see FIG. 3). Then, by rotating the first to third shafts 7 to 9 in the same direction, the spun yarn Y is pushed into the central portion A between the disks 6 and bent in a zigzag shape by contact with the disks 6. Twist or false twist of Z twist is applied. or,
At the same time as the false twist, the spun yarn Y is sent out to the package P.
Here, the central portion A is a portion of the disks 6 having different axes that partially overlap in the radial direction of the first to third shafts 7 to 9,
FIG. 2 shows an inner part of intersections d to f between disks 6 of two different axes (see FIG. 2). In addition, 12 and 13
It is a thread guide provided on the block body 10 and the support body 11.

The yarn holding guide 3 is provided in the false twisting device 2 as shown in FIGS.
4 to 16 and a support bracket 17. Each of the yarn holding levers 14 to 16 is supported by a support bracket 17 and extends between the first shaft 7 and the second shaft 8 of the false twisting device 2 (see FIG. 2). In addition, each thread holding lever 14-16
Are arranged at intervals in the axial direction of the first to third shafts 7 to 9 (see FIG. 3). Each thread holding lever 14-1
6, a guide groove 1 for catching and holding the spun yarn Y
9 are provided. The support bracket 17 includes the drive shaft 1
8, the yarn holding levers 14 to 16 are turned by the rotation of the drive shaft 18. And each thread holding lever 1
By rotating 4 to 16 toward the false twisting device 2, the guide grooves 19 of the yarn holding levers 14 to 16 can be used to rotate the levers 14 to 16.
A spun yarn Y located between the false twisting device 16 and the false twisting device 2 is caught and pushed so as to get over the disks 6 of the first shaft 7 and the second shaft 8, and is spun into a central portion A between the disks 6. Thread Y
Hold.

The twisting device 4 is disposed between the false twisting device 2 and the yarn supplying bobbin B, and limits propagation of twist from the twisting device 4 to the yarn supplying bobbin B side. Then, by restricting the twist applied by the false twist device 2 from propagating to the yarn supplying bobbin B side, an effective false twist is applied to the spun yarn Y, and the fluff binding process is performed.

Next, the operation of the fluff controller 1 will be described with reference to FIG. The drive control of the drive drum D and the drive control of the fluff controller 1 (the control of the rotation speed of the disk 6 and the drive control of the thread holding guide 3) are performed by the controller 40.

FIG. 1 shows a state in which the spun yarn Y is wound up, that is, a state in which the yarn Y is connected between the yarn supplying bobbin B and the package P. A description will be given from a state where the yarn Y is not connected, that is, before the winding of the yarn Y is started. Before starting the rewinding of the spun yarn Y, the driving drum D is stopped and the yarn holding guide 3 of the fluff control device 1 is stopped.
Is turned off (see FIG. 2), the spun yarn Y is unwound from the yarn supplying bobbin B, and is passed through the twist stopping device 4 and between the false twisting device 2 and the yarn holding guide 3 so as to be on the drive drum D. To the winding tube Bf. In a state where the yarn Y is connected, the yarn Y is placed between the false twisting device 2 and the yarn holding guide 3 in a non-operating state.
Is located. Then, each disk 6 of the false twisting device 2 is rotated at a low speed in the same direction (（in FIG. 4).
1).

In this state, by turning each of the yarn holding levers 14 to 16 of the yarn holding guide 3, each of the guide grooves 1 is rotated.
9, the spun yarn Y is caught and pushed so as to get over the disks 6 of the first and second shafts 7 and 8, and the first to third shafts 7 are moved.
8 is held at the center A between the disks 6 (（in FIG. 4).
2, see FIG. 2). The spun yarn Y is brought into contact with each of the disks 6 in a zigzag manner by being pushed between the disks 6, and is rotated by the low-speed rotation of each of the disks 6.
Receiving the feeding force from each disk 6, the contact resistance with each disk 6 is reduced.

Subsequently, the drive drum D is rotated to unwind and run the spun yarn Y from the yarn supplying bobbin B, thereby starting the rewinding of the spun yarn Y. The rotation speed of the drive drum D is
It rises with a steep linear gradient to make it the rewinding speed. Further, the rotation speed of each disk 6 is increased with a gentler linear gradient than the rotation speed of the drive drum D (♯ in FIG. 4).
3). Then, the spun yarn Y travels from the yarn feeding bobbin B in the twist preventing device 4 and between the respective disks 6 of the false twist device 4,
It is rewound as a package P on a take-up tube Bf rotated by the drive drum D. By making the drive drum D a traverse drum, the spun yarn Y is rewound around the winding tube Bf while traversing.

At this time, since the contact resistance between the spun yarn Y and each disk 6 is reduced by the low-speed rotation of each disk 6, even if the spun yarn Y starts running, each disk 6
Is suppressed low, and is smoothly fed to the winding tube Bf. Thereby, the yarn breakage of the spun yarn Y at the start of rewinding can be reduced. In particular, in the case of the thin spun yarn Y, yarn breakage is likely to occur due to the tension applied at the start of traveling and the tension increase due to the resistance between the disks 6, but the yarn breakage can be reduced by rotating each disk 6 at low speed.

When the spun yarn Y travels between the disks 6 of the false twisting device 2, the yarn holding guide 3 is held by the yarn holding levers 14 to 16 to ensure stable running, and The false twist is performed by the rotation of the disk 6. At this time, the propagation of twist to the yarn supplying bobbin B side is regulated by the twist preventing device 4, so that the spun yarn Y is subjected to an effective false twist. As a result, the fluff of the spun yarn Y is caught in the fiber, and the fluff binding processing is performed.

The spun yarn Y is sent out to the package P by the rotation of each disk 6 at the same time as the false twist, and is rewound as the package P while maintaining the tension at an appropriate value (# 4 in FIG. 4). The tension of the spun yarn Y is
And the running speed of the spun yarn Y based on the rotation speed of the drive drum D. That is, it is caused by the amount of the spun yarn Y sent out by the rotation of the disk 6 and the unwound amount of the spun yarn Y by the rotation of the drive drum D.
The traveling speed of the spun yarn Y will be described as the number of rotations of the drive drum D. First, the driving drum D with respect to the rotation speed of the disk 6
When the rotation speed difference between the rotation speeds becomes relatively large, the spun yarn Y
Since the unwinding amount of the spun yarn Y is larger than the feeding amount of the spun yarn Y, the spun yarn Y is tensioned between the false twisting device 2 and the package P, and the tension is increased. Further, when the difference between the rotational speeds of the two is relatively small, the amount of the spun yarn Y to be sent out is relatively large, so that the spun yarn Y is relaxed between the false twisting device 2 and the package P, and the tension is reduced. Decrease. For this reason, at the start of winding, the rotation speed of each disk 6 is increased with a gentle linear gradient, and the rotation speed of the drive drum D is increased with a sharp linear gradient, so that the difference between these rotation speeds is rapidly increased. Thus, the tension of the spun yarn Y is rapidly increased.

Subsequently, when the spun yarn Y unwound as the package P reaches an appropriate tension value, the rising gradient of the rotation speed of each disk 6 changes so as to become a steep linear gradient. Thus, from the start of the running of the spun yarn Y, the rotation speed of each disk 6 is increased along with the increase in the rotation speed of the drive drum D, so that the tension of the spun yarn Y quickly becomes an appropriate value. By keeping the difference between the two rotation speeds constant, the tension of the spun yarn Y is maintained at an appropriate value. Also, by applying appropriate tension,
The spun yarn Y overcomes the rotational force of each disk 6 and travels stably between the disks 6.
The protrusion from the central portion A between them is eliminated.

After the running of the spun yarn Y is stabilized, the spun yarn Y is released by turning each of the yarn holding levers 14 to 16 of the yarn holding guide 3 away from the false twisting device 2 (FIG. 4). # 6, see FIG. 2). By controlling the number of rotations of each disk 6 and the number of rotations of the drive drum D to a constant number of times during rewinding, the spinning yarn unwound from the yarn supplying bobbin B while maintaining the tension of the spun yarn Y at an appropriate value. The yarn Y is subjected to a fluff binding treatment, and the spun yarn Y is rewound as a package P.

In the fluff controller 1 of the embodiment, the spun yarn Y
At the start of the traveling of the yarn, the respective yarn holding levers 14 of the yarn holding guide 3
To 16 to hold the spun yarn Y,
It is possible to stabilize the spun yarn Y traveling between the discs and restrict the spun yarns from jumping out from between the discs 6. Therefore, the spun yarn Y can be continuously rewound as well as the fluff binding process. Further, after the running of the spun yarn Y is stabilized by an appropriate tension, the holding of the spun yarn Y by the yarn holding guide 3 is released, so that excessive damage to the spun yarn Y can be prevented. Then, before the running of the spun yarn Y, the spun yarn Y is pushed between the disks 6 by the yarn holding guide 3 and held, whereby
The spun yarn Y can be run more stably at the start of running.

The fluff controller 1 of the embodiment may be provided with a gripping member 5 for bending the spun yarn Y (see FIG. 1). The gripping member 5 is disposed between the false twisting device 2 and the twist stopping device 4 and grips and bends the spun yarn Y before traveling between the disks 6 by opening and closing the two gripping plates 20. is there. Then, after the running of the spun yarn Y is started by the rotation of the drive drum D, the gripping member 5 grips and bends the spun yarn Y, so that the tension on the spun yarn Y is more rapidly increased to an appropriate value (FIG. 4 $ 8). with this,
The spun yarn Y can be stably run between the disks 6, and the spun yarn Y does not jump out of the center A between the disks 6. The holding by the holding member 5 is released when the tension of the spun yarn Y reaches an appropriate value.

Next, an example in which the fluff controller 1 is applied to an automatic winder as a winding machine will be described with reference to FIGS.

The automatic winder 31 shown in FIG. 5 and FIG.
A multiplicity of winding units 32 are arranged side by side, and each winding unit 32 includes the fluff control device 1 shown in FIGS.
In each winding unit 32, a spun yarn Y unwound from the yarn supplying bobbin B is supplied to a balloon breaker (not shown), a fluff control device 1, a waxing device 34, and a slab catcher 36 for detecting a defect of the spun yarn Y. Through the winding tube Bf rotated by the traverse drum D to rewind the package P. 35 is a yarn trap. The yarn trap 35 gives a suction effect to the spun yarn Y between the waxing device 34 and the slab catcher 36 during standby, and also provides the yarn feeding bobbin B of the false twisting device 2 at splicing after yarn breakage.
It also has a function of a relay pipe for introducing the yarn end sucked and captured on the side into the yarn joining device 33. A suction mouth 37 guides the yarn end on the package P side to the yarn joining device 33.

The yarn holding guide 3 of the fluff controller 1
Each of the winding units 32 is turned by a cam mechanism that drives the devices 33, 34, 35, and the like. This thread holding guide 3
In a series of operations performed before the rotation of the traverse drum D by the cam mechanism, the spun yarn Y
Press in between and hold. After the rotation of the traverse drum D is started, the series of operations by the cam function is completed.
Secure using urging means such as an electromagnet.

After the yarn feeding bobbin B is exchanged, or after the yarn Y is forcibly cut by the yarn defect detection of the slab catcher 36, and the yarn splicing is performed, before the winding of the yarns by each winding unit 32 is started, the temporary Each disc 6 of the twisting device 2 is rotated at a low speed, and the spun yarn Y is pushed between the discs 6 by the thread holding guide 3 to be held at a central portion A between the discs 6 (see FIG. 2). Subsequently, when the traverse drum D of each winding unit 32 is rotated to start the rewinding of the spun yarn Y, the spun yarn Y unwound from the yarn supplying bobbin B is moved when traveling through the fluff binding device 1. While the running is stabilized by the holding guide 3, the disks 6 are falsely twisted by the rotation of the disks 6 to perform the fluff binding process. At the same time, each disk 6
By adjusting the rotation speed of the traverse drum D and the rotation speed of the traverse drum D, the tension of the spun yarn Y is rapidly increased to an appropriate value, and the running of the spun yarn Y is stabilized. In addition, by gripping and bending the spun yarn Y by the gripping member 5, the tension of the spun yarn Y is rapidly increased to an appropriate position (see FIG. 4). Then, when the tension of the spun yarn Y reaches an appropriate value, the holding of the spun yarn Y by the yarn holding guide 3 and the holding of the spun yarn Y by the holding member 5 are released. At the same time, by adjusting the number of rotations of each disk 6 and the number of rotations of the traversing drum D, while maintaining the tension of the spun yarn Y at an appropriate value, the number of rotations of both the yarns is set as a constant number of rewinding, The spun yarn Y is rewound as a package P while being traversed by the traverse drum D.

As a result, the fluff control device 1 of the present invention
Even when applied to an automatic winder 31 which is a winding machine, the spinning yarn Y is held by the yarn holding guide 3, and the spinning speed is rapidly increased to an appropriate value by the rotation speed of the disk 6 and the rotation speed of the traverse drum D. Due to the tension of the yarn Y, when the yarn running of the spun yarn Y starts, the spun yarn Y can run stably between the disks 6, so that the spun yarn Y does not jump out from between the disks 6.

Also, before the running of the spun yarn Y, the yarn holding guide pushes the spun yarn Y into the center portion A between the disks 6 rotating at a low speed, so that the contact resistance of the disk 6 at the time of pushing the yarn is reduced. Therefore, it is possible to prevent the yarn from being broken when the yarn is pushed. By starting the running of the spun yarn Y in this state, the spun yarn Y can be stably run, and the spun yarn Y can be prevented from being cut due to contact resistance with each disk 6. The drive control of the traverse drum D, the rotation speed control of the disk 6 of the fluff control device 1, and the drive control of the cam mechanism are performed by the controller 40. The above-described example shows an example in which the fluff control device 1 is used as a fluff binding device (fluff suppressing device). However, the present invention is also applied to a fluff generating device that roughens the surface of the disk 6 and generates fluff. good.

[0031]

According to the fluff control device of the present invention (claim 1), the yarn traveling between the disks is stabilized by holding the yarn at the center between the disks by the guide means at the start of the yarn traveling. By doing so, it is possible to restrict jumping out from between the disks. Therefore, not only the fluff control processing but also the yarn rewinding can be performed continuously.

In the fluff control device of the present invention (claim 2),
After the running of the yarn is stabilized by appropriate tension, the holding of the yarn by the guide means is released, so that the fluff control process and the rewinding can be performed without excessively damaging the yarn.

In the fluff control device of the present invention (claim 3),
Before the running of the yarn, the yarn is pushed into the center between the discs by the guide means and held, so that the running of the yarn is further stabilized at the start of the running of the yarn.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fluff control device of the present invention.

FIG. 2 is a view taken in the direction of arrows EE in FIG. 1;

FIG. 3 is a view on arrow FF of FIG. 1;

FIG. 4 is a time chart for explaining the operation of the fluff control device of the present invention.

FIG. 5 is a schematic diagram showing a winding unit of an automatic winder to which the fluff control device of the present invention is applied.

FIG. 6 is a side view showing a winding unit of an automatic winder to which the fluff control device of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuzz control device 2 False twisting device 3 Yarn holding guide (guide means) 4 Twist stop device 5 Gripping member 6 Friction disk 7 First shaft 8 Second shaft 9 Third shaft 14-16 Thread holding lever Y Spun yarn

Claims (3)

[Claims] 1. A fluff control device for applying false twist to a spun yarn running between the respective disks by rotation of a plurality of disks and simultaneously applying a feeding force to the yarn. And a guide means for holding the yarn at a central portion between the disks. 2. The apparatus according to claim 1, wherein the guide means is in a non-operating state for releasing the holding of the thread when the tension of the thread reaches an appropriate value after the running of the thread starts. Fluff control device. 3. The fluff control according to claim 1, wherein the guide means pushes the yarn into a center portion between the disks before the yarn starts running. apparatus.