JPS6335728B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rectifier for the spindle of an ultra-high-speed ring spinning machine, and more specifically, to a rectifying device for preventing air turbulence from occurring around a tube yarn during spinning. This invention relates to a rectifier for the twisting/winding mechanism of an ultra-high-speed ring spinning machine.

Conventional technology In order to compete with spinning companies in developing countries that depend on low labor wages and to reduce spinning costs by promoting energy conservation, spinning machines such as ring spinning machines have been reducing the diameter of the spindle warp. Various measures have been taken to reduce power consumption, including reducing the weight of spindle drive systems and reducing the frictional resistance of bearing devices. In particular, in ultra-high-speed ring spinning machines equipped with rotating rings whose spindles normally rotate at speeds of 30,000 r/m to 50,000 r/m, the increase in power consumption is particularly noticeable in the high-speed rotation range. In view of the facts, it is desired to further reduce power consumption as well as improve the quality of spun yarn.

Problems to be Solved by the Invention Despite the efforts described above, the reduction in power consumption achieved by improvements to conventional spindle systems is at most a small number compared to the case without these improvements. This is only about a percent, and we are looking forward to the early establishment of more serious energy-saving technology.

The main purpose of the present invention is to solve the above-mentioned problems recognized in the existing energy-saving technology for spinning machines, and to achieve an energy-saving effect that is particularly noticeable in the high-speed rotation region where the spindle rotation speed is 30,000 r/m or more. An object of the present invention is to provide a spindle device for an ultra-high-speed ring spinning machine that can exhibit the following characteristics.

Means for Solving the Problems In view of the above object, the present invention surrounds a winding layer of the pipe yarn between the ring rail and the spindle rail located below the ring rail, thereby increasing the amount of winding of the pipe yarn. The gist of this invention is a rectifying device for the spindle of an ultra-high-speed ring spinning machine, which is equipped with a cylindrical bobbin cover whose bobbin surrounding length gradually increases in accordance with the current.

Function In the spindle device of a conventional ultra-high-speed ring spinning machine, the rotation of the spindle generates opposing air currents between adjacent pipe threads, and due to their interference, turbulent air flows impinge on the surface of the winding layer of the pipe threads. In the present invention,
By arranging a bobbin cover that surrounds the winding layer of the tube thread around the bobbin inserted and supported by the spindle, and the bobbin surrounding length gradually increases as the amount of winding of the tube yarn increases, it is possible to The winding layer of the tube yarn formed on one bobbin is shielded from the turbulent airflow generated by the rotation of other bobbins, and spinning conditions suitable for reducing power consumption in which only rectified airflow acts are created. produce.

Embodiment FIG. 1 is a partial vertical sectional view of a spindle device illustrating a first embodiment of the present invention. As shown in the figure, a rotary ring 3 is rotatably supported on the ring rail 1 via an air bearing 2 in a floating state. In addition, the rotating ring has
A brake device 13 is provided to prevent yarn breakage due to inertia rotation. The yarn 11 sent out from the front roller 8 passes through the snail wire 9, the balloon control ring 10, and the crown 15 provided on the upper part of the spindle body in accordance with a conventional method, reaches the traveler 14, and is wound on the bobbin 6. form 7. Since this operation of forming the yarn winding layer 7 progresses from the lower end of the bobbin 6 fitted and supported by the spindle 12 toward the upper end, the bobbin cover 5 surrounding the yarn winding layer 7 is
Between the ring rail 1 and the spindle rail 4, which are spaced apart as the amount of yarn winding increases, a plurality of winding layers are provided so as to form a space surrounding the yarn winding layer that is substantially cut off from the outside of the system. Cylindrical members 5a, 5b, 5c
... by connecting it to a telescopic structure. The bobbin cover 5 allows the inner circumferential wall surface of the cylindrical member to function as a rectifying surface that faces the surface of the yarn winding layer 7 at a predetermined distance, so that only the airflow rectified on the surface of the yarn winding layer 7 flows. This creates a state of simultaneous flow, and completely blocks the inflow of turbulent air caused by the rotation of the tube winding bobbin fitted into the adjacent spindle.

In this way, the bobbin 6 fitted and supported by the spindle 12 is not affected by adjacent bobbins and only has a rectified airflow throughout the spinning time from the start of winding to the full state. can maintain spinning conditions suitable for reducing power consumption. FIG. 2 is a power consumption reduction rate vs. spindle rotation speed diagram that compares and displays the reduction in power consumption for each spindle rotation speed by employing the device of the present invention. The rate of decrease in power consumption above is
This is calculated based on the case where the bobbin cover 5 is removed. From this illustrative explanation, the rate of reduction in power consumption improves as the spindle rotation speed increases,
For example, when the spindle rotation speed is 35000 r/m, it is understood that the power consumption is reduced by about 33% compared to a conventional spindle device without a bobbin cover.

Although the embodiments of the present invention have been illustrated and described above, the gist of the present invention should not be construed in a limited manner by the description of the above embodiments, and many modifications that fall within the scope of the claims are possible. It can be implemented. For example, instead of the bobbin cover described in the embodiment in which a plurality of cylindrical members are connected in a telescopic structure, the bobbin cover may be manufactured from a tube made of a flexible material and having a bellows-shaped peripheral wall that can be expanded and contracted. It is also possible. Further, if necessary, the bobbin cover 5 can be formed of a plurality of cylindrical members whose diameters gradually increase from the ring rail 1 side toward the spindle rail 4 side.
If desired, the device of the present invention can be installed in a similar manner on a known spinning machine with a fixed ring or an ultra-high-speed ring spinning machine with a direct-drive spindle device directly connected to a motor. Can be done.

Effects of the Invention As can be understood from the above explanation, by attaching a bobbin cover that surrounds the winding layer of the tube yarn to the spindle device of an ultra-high-speed ring spinning machine, power consumption can be reduced on the surface of the winding layer of the tube yarn. A rectified airflow suitable for reducing the amount of air can be made to flow together. According to the invention, the power consumption is therefore significantly reduced compared to conventional spindle arrangements in which turbulence exists between adjacent bobbins. Furthermore, since the fluffing of the yarn is also suppressed by the rectifying action of the bobbin cover, the present invention can also exhibit a remarkable effect on improving the quality of the yarn.

[Brief explanation of the drawing]

FIG. 1 is a partial vertical sectional view of a spindle device illustrating an embodiment of the present invention. Moreover, FIG. 2 is a power consumption reduction rate-spindle rotation speed diagram illustrating the difference in power consumption between the device of the present invention and a conventional spindle device. 1...Ring rail, 2...Air bearing,
3...Rotating ring, 4...Spindle cover, 5
...bobbin cover, 6...bobbin, 7...yarn winding layer.

Claims (1)

[Claims] 1 A cylindrical bobbin cover is arranged between the ring rail and the spindle rail located below the ring rail, which surrounds the winding layer of the yarn and whose bobbin surrounding length gradually increases as the amount of winding of the yarn increases. A rectifier for the spindle of an ultra-high-speed ring spinning machine, which is characterized by the following: