JPS6327452B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a technology for preventing wind noise generated as a result of the rotation of tube yarns in spinning machines, particularly ring spinning machines, and reducing power consumption.

<Prior Art> In a ring spinning machine, spun yarn is wound as a yarn layer onto a bobbin fitted into a spindle that rotates at high speed to form a tube yarn. In recent years, as spindle speeds have increased, various problems have arisen due to rotational friction between the tube surface and the surrounding air. One of them is the generation of noise.The wind noise emitted from the spinning room, which accommodates tens of thousands of spindles, worsens the working environment.
Reduces worker efficiency. Furthermore, the accompanying airflow on the surface of the tube causes a large airflow along both sides of the frame of the spinning machine, resulting in the scattering of fluff and a large power loss. Furthermore, due to air resistance, fiber ends protrude from the yarn layer on the surface of the tube yarn, causing fluffing of the yarn, and this fluffing further increases air resistance, creating a vicious cycle.

In order to prevent these drawbacks associated with high-speed rotation of the spindle, for example, in Japanese Patent Application Laid-Open No. 141-1987, the side circumference of the bobbin is surrounded by a cylindrical separator,
A soundproofing device has been proposed in which a ring holder is provided so as to be movable up and down. However, in this device, a cylindrical separator with a height that covers the entire length of the bobbin inserted into the spindle is always attached, which significantly impedes operability during thread splicing, doffing, etc. The means for attaching and supporting the ring becomes complicated and structural problems remain, making it impractical.

<Problems to be Solved by the Invention> According to experiments conducted by the present inventor, the various problems associated with the high-speed rotation of the spindle described above are mainly caused by the tube forming part on the bobbin, and It was found that the influence of the surface was small. That is, it has been found that problems such as noise and power consumption can be almost solved by covering only the large-diameter tube yarn portion where the yarn layer is formed, even if the entire bobbin is not completely covered.

<Means for Solving the Problems> The present invention has been made based on the above-mentioned findings, and provides a bobbin that is fitted onto a spindle that is erected on the axis of the ring by raising and lowering the ring. In a ring-winding spinning machine that guides spun yarn to form a tube yarn, a cylindrical cover surrounding the spindle is provided below the ring so as to be movable up and down together with the ring to cover the circumference of the tube yarn portion of the bobbin. It is characterized by the fact that

The cylindrical cover is provided only below the ring since it is necessary to cover only the already formed tube thread portion.

This cover may be configured in advance as a cylinder having a certain length to match the height of the full yarn, and may be suspended and attached to the lower surface of the ring.

In another embodiment, the cover is made of a stretchable material;
For example, it is composed of a flexible tube or a telescopic cover, and its upper end is attached to the lower part of the ring, and its lower end is attached to a fixed part of the spinning machine such as a spindle rail, and as the ring moves up and down, it expands and contracts while covering the tube and thread. It has been made possible.

The present invention will be explained in more detail below based on preferred embodiments shown in the drawings.

In FIG. 1, a spindle 2 attached to a spindle rail 1 is rotated at high speed by a spindle tape 3. A ring 5 is attached to the ring rail 4 concentrically with the spindle 2,
As the ring rail 4 moves up and down, the spun yarn Y
is guided onto the bobbin 7 fitted into the spindle 2 by the traveler 6 sliding on the ring 5, and the pipe thread 7a
It is formed as A cylindrical cover 8 according to the present invention is installed in a groove provided on the inner peripheral surface of the lower part of the ring 5.
is suspended by elastically engaging a rib 8a provided on its upper part. In addition, 9 and 10 in the figure
show a conventional plate separator and a Snell wire, respectively.

The cylindrical cover 8 is set in advance at a height such that it almost entirely surrounds the tube yarn section B excluding the chase section A of the tube yarn in a full tube state (FIG. 1 shows this state). . At the beginning of tube formation, ring 5
is located below the spindle 2, and accordingly, the cover 8 also extends down to the vicinity of the spindle rail 1, as shown by the imaginary line. In this case, in order to avoid interference with the spindle tape 3, a slit 11 is provided in the lower part of the cover 8 as shown in FIG.

As the tube yarn 7a grows, the cover 8 gradually moves upward along with the ring 5, and as is clear from the figure, the tube section B is always kept surrounded by the cover 8. Therefore, collision of airflow with adjacent weights is prevented, and the pulling out of fibers from the tube surface due to airflow turbulence and power loss due to turbulence are drastically reduced. Wind noise is also reduced due to the sound insulating effect of the cover.

Furthermore, since the chase portion A where the spun yarn is continued to be wound is exposed to the outside as before, the yarn splicing operation can be carried out without any problems, and there is no need to modify the doffing operation.

<Example> Figures 3A and 3B show another example of the present invention. According to this, instead of the fixed length cover 8 in the above-described embodiment, a telescoping cover 18 made of a flexible tube is provided.
is used. The cover 18 has its upper end secured to the lower part of the ring 5, and its lower end secured to a base 12 fixed to a stationary part of the machine base such as the spindle rail 1. It is necessary that the length of the flexible pipe is set to have a sufficient length so that it does not fully extend even when the ring 5 rises to the highest position (Fig. 3A). It is clear that with this configuration, the cover 18 expands and contracts as the ring 5 moves up and down, completely surrounding the tube section B. In this embodiment, it is not necessary to consider the problem of interference between the cover 18 and the spindle tape 3 (FIG. 3B).

FIG. 4 shows a modification of the above-described embodiment, in which a telescopic cover 28 is used in place of the flexible tube, but its action and function are the same.

Further, in the embodiment shown in FIG. 1, a slit 11 is provided in the cover 8 to avoid interference between the spindle tape 3 and the cover 8 at the initial stage of forming the tube. 7 may be set longer than normal so that the lower end of the cover 8 does not come into contact with the spindle tape 3 even when the ring 5 is at the lowest position.

<Effects of the Invention> As detailed above, according to the present invention, the tube yarn on the spindle is always surrounded by a cover during yarn spinning, so wind noise is blocked and airflow between adjacent spindles is prevented. Collisions between the two are avoided and rotational resistance of the tube and yarn is drastically reduced, thereby preventing yarn fuzz and loss of power. Also, the chase part is always open, so you can join the threads,
It does not impair operability during doffing work.

[Brief explanation of the drawing]

FIG. 1 is a schematic side sectional view of one embodiment of the present invention, and FIG.
The figure is also a perspective view of the cylindrical cover, Nos. 3A and B.
4 are schematic side sectional views of other embodiments of the present invention. 1...Spindle rail, 2...Spindle, 3...
Spindle tape, 4... Ring rail, 5... Ring, 6... Traveler, 7... Bobbin, 7a... Tube thread,
8, 18, 28...Cover.

Claims (1)

[Scope of Claims] 1. A ring-winding type spinning machine that forms a pipe yarn by guiding spun yarn to a bobbin fitted onto a spindle that is set up on the axis of the ring by raising and lowering the ring. A separator for a spinning machine, characterized in that a cylindrical cover surrounding the spindle is provided below the ring so as to be movable up and down together with the ring to cover the periphery of the tube yarn portion of the bobbin. 2. Claim 1, wherein the cylindrical cover has a certain height, has a slit in the side wall to avoid interference with the spindle drive tape, and is suspended on the lower surface of the ring. Separators listed in section. 3. A special feature according to claim 1, characterized in that the cylindrical cover is configured to be expandable and contractible in the height direction, and its upper end is attached to the lower part of the ring, and the lower end is attached to a fixed part of the spinning machine. separated separator. 4. The separator according to claim 3, wherein the cylindrical cover is constituted by a flexible tube. 5. The separator according to claim 3, wherein the cylindrical cover is a telescopic cover.