JPS60218260A - Yarn feeding roller - Google Patents

Abstract

PURPOSE:To obtain a good package by forming a plurality of ventilating holes passing through the inside and the outside of a yarn feeding roller in the circumferential direction in the yarn contact part of said roller and improving the yarn separation from the surface of the roller and facilitating the taking-up with a small tension. CONSTITUTION:The yarn Y spinned-out from a spinning nozzle 1 is taken-up into a taking-up apparatus, passing through a yarn feeding roller 4 through a yarn distributing guide 2. Said yarn feeding roller 4 is fixed through a spacer 7 onto a shaft 6 rotatably supported onto a frame 3. A plurality of ventilating holes (h) penetrating through the inside and the outside of the roller 4 are formed in the circumferential direction on the outer periphery of the yarn feeding roller 4. Therefore, when the yarn feeding roller 4 revolves, an air-flow flows towards outside from the inside of the roller 4, passing through the ventilating holes (h) and acts from under the contact-traveling yarn Y, and the yarn separation from the surface of the roller 4 is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a yarn feeding roller for spun yarn.

(B) Conventional technology The yarn feed roller closest to the winding device used when winding the spun yarn acts to block tension fluctuations in the wound yarn and ensure stable winding. It is something to do. Conventionally,
The surface of this thread feed roller is mirror finished. However, as the processing speed of yarn increases, it has become extremely difficult to wind yarn stably and with low tension due to the accompanying airflow accompanying the rotation of the yarn feed roller.

For example, if the processing speed of the traveling yarn between the yarn feeding roller and the winding device decreases, the yarn will not easily separate from the yarn feeding roller, the yarn will be caught by the yarn feeding roller, and yarn breakage will occur. . On the other hand, winding with high tension has the disadvantage that unevenness of the wound package, thread dropout, uneven dyeing, etc. may occur.

(c) Problems to be Solved by the Invention The purpose of the present invention is to solve the above-mentioned conventional problems, and to provide stable yarn feeding with low tension even during high-speed winding. It is an object of the present invention to provide a yarn feeding roller which is capable of winding high-quality yarn with less yarn breakage due to reverse winding on the yarn feeding roller.

(d) Means for Solving the Problems The configuration of the present invention for achieving the above-mentioned object is such that, in the yarn feeding roller that transports the yarn while contacting the peripheral surface thereof, at the yarn contacting portion or in the vicinity thereof, The yarn feeding row is characterized in that a plurality of ventilation holes are provided in the circumferential direction of the yarn feeding roller, passing through the inside and outside of the roller.

(E) Function and Examples An example of the yarn feed roller according to the present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a front view of a yarn take-up device to which a yarn feed roller according to the present invention is applied, and FIG. 2 is a side view of FIG. 1. Moreover, FIG. 3 is a front view showing one embodiment of the yarn feeding roller according to the present invention, and FIG. 4 is a sectional view of FIG. 3.

In FIG. 1, the yarn Y spun from the spinneret 1 is
The yarn passes through a guide 2, passes through a yarn feed roller 4, and is wound up by a winding device 5.

The yarn feed roller 4 is fixed to a shaft 6 rotatably supported by the frame 3 via a spacer 7 (see FIGS. 3 and 4), and is rotated together with the shaft 6 and spacer 7 by a motor (not shown).

As shown in FIGS. 3 and 4, a plurality of ventilation holes are provided in the circumferential direction on the outer periphery of the yarn feeding roller 4, passing through the inside and outside of the yarn feeding roller. The yarn Y runs on or near the above-mentioned ventilation hole. The yarn feed roller 4 is formed into a hollow cylindrical shape, but one side surface is open. When the yarn feed roller 4 rotates, the air on the side surface of the yarn feed roller 4 is thrown outward by centrifugal force. This airflow flows from the inside of the yarn feeding roller to the outside through the ventilation holes provided on the outer periphery of the yarn feeding roller, and acts from directly below the yarn Y that is running in contact with it, or from below in the vicinity thereof. This also improves the separation of the yarn from the surface of the yarn feed roller. Note that the ventilation hole is preferably provided on an extension of the inner side surface of the yarn feed roller. Furthermore, by adjusting the length of the spacer 7, in the case of multi-filament threading, the interval between adjacent thread feed rollers can be changed as desired.

FIG. 5 is a front view showing another embodiment of the yarn feeding roller according to the present invention, and FIG. 6 is a sectional view of FIG. 5.

Moreover, FIG. 7 is a sectional view of a yarn feeding roller showing still another embodiment of the present invention.

In FIG. 5, a tube 8 for blowing out compressed air from a ventilation hole provided on the outer periphery of the yarn feeding roller is arranged inside the yarn feeding roller, and the yarn feeding roller rotates in the direction of the arrow. The yarn Y runs on the yarn feed roller. By blowing out compressed air from the duplex 8 toward the ventilation holes, the effect of separating the wound yarn from the yarn feeding roller is further improved. The direction in which the compressed air is blown is preferably near point P in the figure, which is the position where the yarn leaves the surface of the yarn feed roller.

The tip of the tube 8 is preferably formed into a thin nozzle-like hole in order to reduce air consumption.

Further, as shown in FIG. 7, the yarn feeding roller 4 may be provided with ventilation holes corresponding to multiple threads on the outer peripheral surface.

In the above embodiment, the yarn feeding roller is arranged below the winding device, but the present invention is not limited to this, and it may be arranged above the winding device.

FIG. 8 is a front view of another yarn take-up device to which the yarn feed roller according to the present invention is applied, and FIG. 9 is a side view of FIGS. 5-8.

In FIG. 8, the yarn Y spun from the spinneret 1 is
The yarn passes through the guide 2, the godet roller 10, the yarn feed roller 4, the yarn regulation guide 2a, the traverse fulcrum guide 9, and is wound up by the winding device 5. In this embodiment, the yarn feed roller 4 is provided above the winding device 5.

It goes without saying that the yarn feeding roller of the present invention is not only applied to a yarn feeding roller to a winding device, but also applicable to a process in which the yarn is run under low tension.

A) Effects of the Invention The present invention described in detail above achieves the following excellent effects by employing the above configuration.

That is, the yarn feeding roller according to the present invention can: (1) feed the yarn by causing an air flow generated by centrifugal force due to the rotation of the yarn feeding roller to act through ventilation holes provided in the circumferential direction on the outer periphery of the yarn feeding roller; The yarn separation between the roller surface and the yarn running on the roller surface is improved, low tension winding is facilitated, and -0- a good package can be obtained.

■ Air is actively blown out in the outer radial direction from the ventilation holes of the yarn feed roller to improve separation between the surface of the yarn feed roller and the yarn running on it, and to achieve low tension winding. It's easier and you can get a better package.

[Brief explanation of drawings]

FIG. 1 is a front view of a yarn take-up device to which a yarn feed roller according to the present invention is applied, and FIG. 2 is a side view of FIG. 1. Moreover, FIG. 3 is a front view showing one embodiment of the yarn feeding roller according to the present invention, and FIG. 4 is a sectional view of FIG. 3. 5 is a front view showing another 1M embodiment of the yarn feeding roller according to the present invention, and FIG. 6 is a sectional view of FIG. 5. FIG. 7 is a sectional view of a yarn feeding roller showing still another embodiment of the present invention. FIG. 8 is a front view of another yarn take-up device to which the yarn feed roller according to the present invention is applied, and FIG. 9 is a side view of FIG. 8. 1: Spinneret 2: Light guide 2a: Yarn regulation guide 3: Frame 4.4a, 4h: Yarn feed roller 5: Winding device 6: Shaft 7: Spacer 8: Tube 9: Traverse fulcrum guide 10: Godet roller Y: Yarn 11 ventilation hole P: Air blowing position Patent applicant Toshi Co., Ltd. - RiIA - Figure 9

Claims (1)

[Claims] A yarn feeding roller that transfers yarn by contacting its circumferential surface is provided with a plurality of ventilation holes passing through the inside and outside of the roller in the circumferential direction of the yarn feeding roller at or near the yarn contacting part. A thread feed roller featuring: