JPH076275U - Fluff suppressor - Google Patents

Abstract

(57) [Summary] [Object] To obtain a fluff suppressing device capable of obtaining a spun yarn having substantially no fluff. A roller is provided with a flange on at least one side of a peripheral surface, and a nip roller that is pressed against the roller peripheral surface to rotate, and a portion where the inner surface of the flange and a side surface of the nip overlap is a nip portion, and In the nip portion, the inner surface of the flange and the side surface of the nip roller had a cross-sectional shape in which the inner surface of the flange contacted each other while being asymptotic to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

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

[0002]

[Prior art]

 Conventionally, in an air spinning machine, after a sliver supplied from a can is drafted by a draft device composed of three or more draft roller pairs, a series of swirling airflows generated by compressed air injection in opposite directions are generated. False-twisted by passing through the first and second air-spinning nozzles that are arranged in the above, and the bundled spun yarn is in a false-twisted state due to the presence of the wound fiber on the surface layer of the parallel core fiber. Are manufactured. On the surface of such spun yarn, a part of the end of the wound fiber is released to form a large amount of fluff and become a cloudy yarn, which has a considerable influence on the quality of the spun yarn.

[0003]

[Problems to be solved by the device]

 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]

 A roller having a flange on at least one side of the peripheral surface, and a nip roller that is pressed against the roller peripheral surface to rotate, and a portion where the inner side surface of the flange and the side surface of the nip roller overlap is a nip portion, and the nip portion is In the above, the inner surface of the flange and the side surface of the nip roller have a cross-sectional shape in which the inner surface of the flange is in abutting contact with each other while approaching each other.

[0005]

[Action]

 The nip roller is pressed against the peripheral surface of the driving roller and is driven to rotate. When the spun yarn is sent by being nipped at the nip portion where the side face of the nip roller and the inner face of the flange of the drive roller are in asymptotic contact, the spun yarn is given a rubbing action, which causes fluff on the yarn surface. Is suppressed from wrapping around the thread itself.

[0006]

【Example】

 An example of the embodiment will be described with reference to the drawings.

FIG. 1 shows a spinning machine 2 provided with a fluff suppressing device 1 of the present invention. In the figure, a 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. A large number of spinning units arranged in series in the longitudinal direction of the machine are provided with the delivery roller 6 in pressure contact with the nip roller 6a 6, 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. 1 unit is shown in FIG.

The fluff suppressing device 1 is provided on the downstream side of the delivery roller 6 of the spinning machine 2. The fluff suppressing device 1 will be described below with reference to the drawings.

2 and 3, the fluff suppressing device 1 is mainly composed of a roller 11 and a nip roller 21. The roller 11 is provided with flanges 13 and 14 on both sides of the peripheral surface 12, and the inner side surfaces 15 and 16 of the flanges 13 and 14 and the peripheral surface 12 are continuous with each other by a smooth curved surface so as to have a U-shaped cross section. Forming surface 17.

Further, the roller 11 is formed of, for example, an elastic material such as rubber, and is reinforced by externally fitting the roller 11 to a metal core body 18 so as to be integrated. Then, the core body 18 is fixed to the rotary shaft 19 by a bolt 18b screwed to a flange portion 18a provided at one end of the core body 18, and the rotary shaft 19 is driven and rotated by a drive source (not shown). The roller 11 is driven and rotated.

The nip roller 21 is formed into a circular arc-like smooth curved surface that is substantially the same in cross section as the engaging surface 17 of the roller 11 from the outer peripheral surface 22 to the side surfaces 23 and 24. It is formed of an elastic material of and is externally fitted to and supported by the metal core body 25. Then, the core body 25 is provided on the machine frame so as to be swingable, and is provided at a tip end of a support arm 26 which is urged downward in FIG. Is rotatably supported via a bearing 28. As a result, the nip roller 21 presses the outer peripheral surface 22 against the peripheral surface 12 of the roller 11, and is rotated by the rotation of the roller 11.

While the outer peripheral surface 22 of the nip roller 21 is in pressure contact with the outer peripheral surface 12 of the roller 11, the engaging surface 17 of the roller 11 is substantially engaged with the outer peripheral surface 22 of the nip roller 21. A small wedge-shaped gap 30 (31), which is a nip portion, is formed between the flange inner surface 15 (16) and the side surface 23 (24) of the nip roller 21, and the side surface 23 (24) is the inner surface 15 (16). ) On the inner peripheral side of the inner side surface 15 (16) while gradually approaching.

Further, 32 and 33 are yarn guide members for inserting the spun yarn Y into the wedge-shaped small gap 30 which is a nip portion.

Next, the operation will be described based on examples.

In FIG. 1, the sliver S supplied from the can 3 is drafted in the drafting device 4, then false twisted in the air spinning device 5, and delivered as spun yarn Y from the delivery roller 6. In this state, many fluffs are formed on the surface of the spun yarn Y due to the action of the swirling airflow during spinning.

Then, in the fluff suppressing device 1, it is guided by the yarn guide member 32 and introduced into the wedge-shaped small gap 30 which is a nip portion between the inner flange surface 15 of the roller 11 and the side surface 23 of the nip roller 21. When the spun yarn Y is nipped between the inner side surface 15 and the side surface 23, a rubbing action is given, and the relative movement directions a and b of the inner side surface 15 and the side surface 23 before and after the nip portion n are changed. Accordingly, the spun yarn Y is provided with a slight false twist that is different in direction from each other before and after the nip portion n, whereby the fluff on the surface of the spun yarn Y is wound around the yarn itself and suppressed. The spun yarn Y having substantially no fluff is delivered from the yarn guide member 33, and is wound around the package P while being pressed by the winding drum 9b while traversing the traverse guide 9a in the winding device 9.

In the above process, the nip pressure at the time of suppressing the fluff is determined by the interval and the introduction position of the wedge-shaped small gap 30 between the inner flange surface 15 of the roller 11 and the side surface 23 of the nip roller 21. In the fluff suppressing device 1 of the example, the flanges 13 and 14 are provided on both sides of the roller 11, and the shape of the nip roller 21 is symmetrical so that the positional relationship between the nip roller 21 and the roller 11 is always kept constant. The pressure is constant.

Although the roller 11 provided with the flange 13 (14) is the driving side in the above-described embodiment, the nip roller 21 may be the driving side. Instead of providing the yarn guide members 32 and 33, the spun yarn Y may be introduced into the nip portion n of the fluff suppressing device 1 by a yarn guide of the delivery roller 6 or the yarn clearer 8. It is also possible to supplement the nip pressure of the spun yarn Y by introducing the spun yarn Y so that it is bent at the nipple portion n of the roller 11 provided with the flange 13 (14) of the fluff suppressing device 1. is there.

[0019]

[Effect of device]

 As described above, the false twisting device of the present invention comprises a roller having a flange on at least one of the peripheral surfaces, and a nip roller that is pressed against the roller peripheral surface to rotate, and the inner surface of the flange and the side surface of the nip roller overlap each other. Since the portion is a nip portion and the inner side surface of the flange and the side surface of the nip roller in the nip portion have a cross-sectional shape that abuts each other on the inner peripheral side of the flange while approaching each other, the spun yarn is nipped at a predetermined nip pressure. While delivering, the fluff on the surface of the spun yarn is prevented from being wrapped around the yarn itself by imparting a fine false twist and rubbing action to the spun yarn, and it is possible to obtain a spun yarn having substantially no fluff. .

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing a spinning machine equipped with the fluff suppressing device of the present invention.

FIG. 3 is a sectional view taken along the line XX-X ′ of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fluff suppressing device 2 Spinning machine 11 Roller 12 Circumferential surface 13,14 Flange 15,16 Inner side surface 21 Nip roller 22 Outer peripheral surface 23,24 Side surface 30,31 Small gap n Nip part Y Spun yarn

Claims (1)

[Scope of utility model registration request] 1. A roller having a flange on at least one of its peripheral surfaces, and a nip roller that is pressed against the roller peripheral surface to rotate, and a portion where the inner surface of the flange and the side surface of the nip roller overlap each other is a nip portion, and A fluff suppressing device having a cross-sectional shape in which the inner surface of the flange and the side surface of the nip roller in the nip portion are in abutting contact with each other on the inner peripheral side of the flange.