JPH071075U - Fluff suppressor - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a fluff suppressing device capable of obtaining a spun yarn having substantially no fluff. [Structure] It is possible to feed a yarn while nipping the yarn with a belt that runs crossing the yarn running direction and a rotating disk that has a rotation surface inclined with respect to the belt surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fluff suppressing device which is a spun yarn processing device.

[0002]

[Prior art]

 Conventionally, in an air spinning machine, after a sliver supplied from a can is drafted by a drafting device composed of three or more draft roller pairs, the inside of an air spinning nozzle generating a swirling airflow by compressed air injection is drafted. By passing it through false twisting, a bundled spun yarn that is twisted due to the presence of wound fibers on the surface layer of parallel core fibers is manufactured. On the surface of such spun yarn, a part of the end of the wound fiber is loosened to form a large number of fluff and becomes a cloudy yarn, which has a considerable influence on the quality of the spun yarn.

[0003]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a fluff suppressing device capable of obtaining a spun yarn having substantially no fluff.

[0004]

[Means for Solving the Problems]

 It is possible to feed the yarn while nipping the yarn with a belt that runs crossing the yarn running direction and a rotating disk that has a rotation surface inclined with respect to the belt surface.

[0005]

[Action]

 When the spun yarn is introduced between the belt and the rotating disc and is sent while being nipped by them, the frictional force acting on the spun yarn in mutually different directions in the belt running direction and the tangential direction of the rotation of the rotating disc The friction force on the spun yarn imparts false twisting and rubbing action to the spun yarn, and the fluff on the surface of the spun yarn is wound around the yarn itself and suppressed.

[0006]

【Example】

 Examples will be described with reference to the drawings.

FIG. 1 shows a spinning machine 2 equipped with a fluff suppressing device 1 of the present invention. In the figure, the spinning machine 2 includes a back roller pair 4a, a third roller pair 4b, a middle roller pair 4c on which an apron belt e is mounted, and a front roller pair 4d, which is a four-wire draft device 4, an air spinning device 5, and a nip roller. 6a, the delivery roller 6, the fluff suppressing device 1, the slack tube 7, the yarn clearer 8 for detecting yarn defects, and the winding device 9 arranged in series from the upstream side to the downstream side. In FIG. 1, only one unit is shown.

The fluff suppressing device 1 is arranged on the downstream side of the delivery roller 6 and is orbitally driven over the entire length in the longitudinal direction of the machine base. The fluff suppressing device 1 is mainly composed of a belt 11 and a rotating disk 12 which are provided in common to each spinning unit. Reference numeral 13 is a yarn guide member that guides the spun yarn Y to the fluff suppressing device, and 14 is a second delivery roller that sends the spun yarn Y that has passed through the fluff suppressing device 1 to the downstream side.

As shown in FIG. 2, the rotating disk 12 is formed by fixing a nip member 17 to the lower surface of a circular substrate 16 integrally provided at the tip of the rotating shaft 15. The nip member 17 secures a gripping force using an elastic material such as rubber, and is formed in an annular shape along the peripheral edge of the lower surface of the base plate 16 in the illustrated example, but has a circular shape similar to that of the substrate 16. It's okay.

The rotating shaft 15 is rotatably supported by a support member (not shown) with a slight inclination from the direction perpendicular to the surface of the belt 11 to the right side in the drawing, which is the running direction of the belt 11. . In this state, the rotating disk 13 is slightly inclined with respect to the surface of the belt 11 at the same inclination angle θ as the above-mentioned inclination angle, and the rotating disk 13 is attached to the surface of the belt 11 at the end of the rotating disk 12 on the belt 11 running method side. Are in contact. The contact portions are the hatched arcuate portions T1 and T2 in FIGS.

A pulley 18 is fixed to the other end of the rotary shaft 15, and a drive transmission belt 20 is mounted between the pulley 18 and a pulley 19 fixed to the drive shaft of the motor M. The rotating disk 12 is driven and rotated by the rotation of the motor M in the timekeeping direction in FIGS. 1, 3 and 4.

In the second embodiment shown in FIG. 4, the center of rotation C2 of the rotary disk 12 is provided on the center line of the belt 11 in the width direction, but as in the first embodiment shown in FIG. It is also effective to provide the rotation center C1 of 13 on the yarn introduction side with respect to the center of the belt 11 in the width direction.

The yarn guide member 13 is arranged on the right side of the yarn path on the yarn introduction side of the fluff suppressing device 1 in the figure, and the spun yarn Y is flown in the right direction, which is the traveling direction of the belt 11, to contact the rotating disk 12. The spun yarn Y is prevented from deviating from the portions T1 and T2.

Next, the operation will be described based on examples.

In FIG. 1, the sliver S supplied from the can 3 is drafted by the drafting device 4, then false twisted by the pneumatic spinning device 5, and delivered as spun yarn Y by the delivery roller 6. At this time, many fluffs are formed on the surface of the spun yarn Y by the action of the whirling air current during spinning.

Then, the spun yarn Y delivered from the delivery roller 6 is guided by the yarn guide member 14 and introduced between the belt 11 of the fluff suppressing device 1 and the rotary disk 12. Then, the spun yarn Y is sent in the traveling direction of the belt 11, and the belt 11 and the rotating disk 12 are separated by the belt 11 and the nip point n1 (n2) at the trailing edge of the contact portion T1 (T2) between the belt 11 and the rotating disk 12. After being nipped and passing through the nip point n1 (n2), it is taken up in the winding direction of the winding device 9 on the downstream side.

At this time, at the nip point n1 (n2), the spun yarn Y has a frictional force Fv1 (Fv2) of the belt 11 in the traveling direction of the belt 11 and a tangential direction of rotation of the rotating disc 13 by the rotating disc 12. And the frictional force Fd1 (Fd2) is acting. These frictional forces Fv1 (Fv2) and Fd1 (Fd2) are fed to the spun yarn Y in the resultant force F1 (F2) direction and counterclockwise in FIG. 2 centered on the resultant force F1 (F2) direction. Torque is generated, which imparts false twisting and rubbing action to the spun yarn Y, and fluff on the surface of the spun yarn Y is wound around the yarn itself and suppressed by the false twisting and rubbing action.

In the first embodiment shown in FIG. 3, the alternating angle α 1 of the direction vector between the frictional force Fv1 by the belt 11 and the frictional force Fd1 by the rotating disk 12 at the nip point n1 is 120 °, and the nip point is n °. The peripheral speed of the rotating disk 12 at n1 is set equal to the running speed of the belt 11.

Further, in the second embodiment shown in FIG. 4, the alternate angle α2 of the direction vector between the frictional force Fv2 by the belt 11 and the frictional force Fd2 by the rotating disk 12 is 90 °, and in this case, spinning The yarn Y is delivered along the rotation direction of the rotary disk 12.

In the fluff suppressing device 1 of the embodiment of the present invention, the belt 11 is run at a right angle to the yarn running direction, and the belt 11 is made common to each spinning unit over the entire length in the machine longitudinal direction. By providing the belt 11, the driving yarn of the belt 11 can be simplified and the number of parts can be reduced, and the durability of the belt 11 can be improved by securing a sufficient circumference of the belt 11. Of course, it is also possible to make the yarn run obliquely with respect to the yarn running direction, or to individually provide each spinning unit.

Specific experimental data for fluff suppression based on the first embodiment is shown in FIG. 5 below.

FIG. 5 shows the running speed of the belt 11 of the fluff suppressing device 1 when spinning a mixed yarn of Ne30 with 50% polyester and 50% cotton at a spinning speed of 157 m / min and a winding speed of 155.5 m / min. It is a graph which shows the relationship with the number of fluffs of spun yarn Y. The number of fluffs is the total number of fluffs having a length of 0.5 mm or more per 10 m of spun yarn.

From the experimental results, the fluff number of the spun yarn processed by the fluff suppressing device 1 is about 16% to 23% of the 3472 fluff of the spun yarn which is spun under the same conditions and is not subjected to fluff suppression. It is in a substantially fluff-free state, and further, fluff tends to decrease as the traveling speed of the belt 11 increases.

In the above embodiment, the fluff suppressing device 1 of the present invention is applied to the spinning machine 2 provided with the air spinning device 5, but the present invention is not limited to this. It should be added that it can be applied to various textile machines such as spinning machines, winders, etc. where fluff suppression is effective.

[0025]

[Effect of device]

 The fluff suppressing device of the present invention nips the yarn by using the belt that crosses the yarn traveling direction as described above and the rotating disk that is provided with the rotation surface inclined with respect to the belt surface. Since it is possible to deliver the spun yarn, it is possible to impart false twisting and rubbing action to the spun yarn, and to suppress the fluff on the spun yarn surface by winding it around the yarn itself to obtain a spun yarn that is substantially fluff-free, It has excellent friction properties, and the structure can be simplified to reduce the number of parts.

[Brief description of drawings]

FIG. 1 is a perspective view showing a spinning machine equipped with a fluff suppressing device according to an embodiment of the present invention.

FIG. 2 is a front sectional view showing a spinning machine equipped with a fluff suppressing device according to an embodiment of the present invention.

FIG. 3 is a schematic plan view showing a fluff suppressing device according to a first embodiment of the present invention.

FIG. 4 is a schematic plan view showing a fluff suppressing device according to a second embodiment of the present invention.

FIG. 5 is a graph showing the relationship between belt speed and the number of fluffs.

[Explanation of symbols]

 1 fluff suppressing device 2 spinning machine 11 belt 12 rotating disk n1, n2 nip point Y spun yarn

Claims (1)

[Scope of utility model registration request] 1. A yarn that can be sent while nipping a yarn by a belt that runs in a direction crossing the yarn running direction and a rotating disk that has a rotation surface inclined with respect to the belt surface. Fluff suppressor.