JPH0120252B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a control device for a rotating ring used in an ultra-high-speed ring spinning machine, and more specifically, the present invention relates to a control device for controlling a rotating ring used in an ultra-high-speed ring spinning machine, and more specifically, the present invention relates to a control device for controlling a rotating ring used in an ultra-high-speed ring spinning machine. The present invention relates to a control device for smoothly stopping the vehicle.

[Conventional technology]

A rotating ring that rotates the ring in synchronization with a spindle has been proposed as a means for increasing the spinning speed of a ring spinning machine. This rotating ring reduces the relative speed between the traveler and the rotating ring during spinning, and can reduce burnout and scattering of the traveler due to increased frictional resistance, as well as yarn breakage caused by these obstacles. Therefore, compared to a spinning frame equipped with a conventional fixed ring, it is possible to rotate the spindle at a significantly higher speed, and it is possible to exhibit remarkable effects in improving productivity and reducing manufacturing costs.

[Problem that the invention seeks to solve]

However, when the above-mentioned rotating ring is used, when the spindle is stopped, the spindle stops relatively quickly due to the frictional resistance acting between it and the bearing member, whereas the rotating ring is supported in a floating state by the air bearing, in particular. The rotating ring has a smaller frictional resistance than the former, and the rotating ring tends to continue rotating due to inertia even after the spindle has stopped. This state is shown by the solid line in FIG. 9a.

As a result, the spun yarn wound on the spindle, which has already reached the stopped state, is unwound and wound around a traveler or the like, which hinders the doffing operation.

Therefore, it is necessary to stop the inertial rotation of the rotary ring before the rotational speed of the spindle falls below a predetermined value, and various types of braking devices have been proposed for this purpose. However, conventional braking devices have a complicated structure.
Moreover, this is a mechanical braking method using a brake shoe, and it is difficult to maintain the braking start timing and braking force at stable conditions over a long period of time. Moreover, sudden braking is often applied, causing problems such as the traveling posture of the traveler becoming unstable and thread breakage occurring.

In view of this, an object of the present invention is to provide a rotary ring braking device using hydraulic braking that can solve the above-mentioned problems when braking a rotary ring.

[Means for solving problems]

The present invention for achieving the above object will be explained using FIGS. 1 to 5 corresponding to the first embodiment. The rotating ring braking device 20 of the present invention includes a rotating ring 1 that includes a rotating member 2 having a ring body 4 and a support member 3 that rotatably supports the rotating member 2. The rotating ring braking device 20 is installed vertically below the rotating member. The brake ring 21 is provided with a brake ring 21 and an oil tank 22 into which the brake ring is inserted, and the rotation of the brake ring 21 is controlled by the hydraulic pressure in the oil tank 22.

[Effect]

When the spindle is stopped, the brake ring is immersed in oil in the oil tank, so that the rotating member is stopped with a smooth deceleration curve without causing a shock due to the hydraulic pressure received from the oil.

〔Example〕

1 to 5 show a first embodiment. The rotating ring 1 consists of a rotating member 2 and a support member 3 that supports the rotating member 2. The rotating member 2 includes a ring body 4, an intermediate ring 5 supporting the ring body 4, and a lower ring 6 attached to the lower part of the intermediate ring 5. The support member 3 comprises an annular housing 8 opposite the intermediate ring 5 and supporting an air carrying ring 7, the annular housing 8 being attached to a ring rail 9. The air carrying ring 7 is molded from a porous, air-permeable sintered metal material, and the housing 8 is provided with air introduction holes 10 that communicate with the air carrying ring 7. 11 and 12 are upper and lower flanges provided on the rotating member 2 to face the upper and lower surfaces of the air carrying ring 7, and these upper and lower flanges and the intermediate ring 5 have minute gaps with respect to the air carrying ring 7, and The rotating member 2 is supported in a floating state by the air blown out from the ring 7.

Reference numeral 13 denotes a pressure reducing valve communicating with the air introduction hole 10, which lowers the pressure air supplied from the pressure air supply pipe 14 to a predetermined pressure and supplies it to the air carrying ring 7.

The rotary ring braking device 20 includes a cylindrical brake ring 21 hanging from the lower ring 6, and an oil tank 22 into which the brake ring 21 is inserted. The oil tank 22 is attached to a mounting flange 23 connected to the ring rail 9, and the high viscosity brake oil OL is transferred to the oil tank 22 through a switching valve 24.
It is supplied and discharged within.

The brake ring 21 forms a rotation resistance means 25 for applying resistance to the brake oil in the oil tank during rotation. As this rotational resistance means, the inner and outer surfaces of the brake ring may be roughened, and the illustrated example shows serrations formed at right angles to the rotational direction.

In the above configuration, the switching valve 24 is normally operated to discharge the brake oil OL in the oil tank.
As a result, in normal spinning work, the rotating member 2
rotates as the traveler travels due to frictional force with the traveler (not shown) attached to the ring body 4.

Next, when the spindle is stopped when the pipe is full, the switching valve 24 is rotated in conjunction with this, and the brake oil OL is supplied into the oil tank 22 to immerse the brake ring 21. This causes brake ring 2
1 is subjected to a braking force, which is proportional to the rotational speed of the brake ring and the height of the immersion. Therefore, oil tank 2
As the oil level in 2 increases, the braking force increases and the rotating member 2 stops, and the rotating member uses hydraulic braking, unlike conventional mechanical braking such as a brake shoe, and therefore causes a shock. Without this, the traveler is not affected by ring braking. This braking procedure is shown in FIG. 9b. That is, when the present invention is used, a smooth descending line is formed, unlike the rapid deceleration using the mechanical method shown in FIG.

6 and 7 show modified examples of the rotation resistance means formed on the brake ring. The rotation resistance means 30 in FIG. 6 has a brake ring 31 with a pointed triangular cross section. As the oil level rises, the immersion area of the resistance means 30 increases in a geometric progression, making it possible to make the speed drop line steeper. In the figure, 32 is a serration formed on both the inside and outside surfaces.

The rotation resistance means 35 shown in FIG. 7 is formed by attaching serrations 37 to the inner and outer surfaces of a brake ring 36 and forming tooth profiles 38 at the lower end.

Next, FIG. 8 shows a second embodiment. The rotating ring braking device 40 of this embodiment consists of a brake ring 41 provided at the lower part of the rotating member 2 of the rotating ring 1 and an oil tank 42 that can be raised and lowered, similar to the previous example.
There is always a certain amount of brake oil OL in the oil tank 42.
It is stored below the brake ring 41 at all times, and when braking it is raised and the brake ring 4
1 is immersed in brake oil.

Reference numeral 43 denotes a lever for raising and lowering the oil tank, which is connected to a suitable raising and lowering drive means (not shown). The rest of the structure is the same as that of the previous example, and the same parts are given the same reference numerals and explanations will be omitted.

Although each of the above embodiments shows an example in which the brake ring has a single cylindrical shape, the brake ring is not necessarily limited to this, and for example, a large number of blade-shaped brake rings may be arranged on the circumference. Of course, other changes may be made without departing from the spirit of the present invention.

〔Effect of the invention〕

According to the present invention, the brake ring is attached to the rotating member having the ring body, and the brake ring is braked by the hydraulic pressure against the brake oil in the oil tank, so that there is no shock during braking and the brake ring is smooth. A smooth deceleration curve is formed, and there is no sudden change in the increase or decrease in friction with the traveler, and therefore no thread breakage occurs. Further, the device of the present invention has a simple overall structure, has no parts that cause wear during use, and has the advantage of being able to maintain stable braking performance over a long period of time.

[Brief explanation of drawings]

1 to 5 relate to the first embodiment; FIG. 1 is a longitudinal sectional view of the whole, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along the line - in FIG. 1, and FIG. 4 is a front view of the rotating member, FIG. 5 is an enlarged sectional view taken along the line - in FIG. 4, FIGS. 6 and 7 are explanatory diagrams of modified examples of the brake ring, and FIG. It is a front view. Further, FIG. 9 is a rotation speed vs. inertia rotation time diagram illustrating braking characteristics, in which FIG. 9a relates to a conventional braking device and FIG. 9b relates to the device of the present invention. 1 is a rotating ring, 2 is a rotating member, 3 is a support member, 4 is a ring body, 20, 40 are rotating ring braking devices, 21, 31, 36, 41 are brake rings, 22, 42 are oil tanks, OL is brake oil It is.

Claims (1)

[Scope of Claims] 1. A rotating ring consisting of a rotating member having a ring body and a support member that rotatably supports the rotating member, including a brake ring hanging below the rotating member, and the brake ring. 1. A rotary ring braking device comprising: an oil tank into which a brake ring is inserted, and whose rotation relative to a brake ring is controlled by hydraulic pressure in the oil tank. 2. The rotating ring braking device according to claim 1, wherein the oil level height in the oil tank in which the brake ring is immersed can be adjusted. 3. The rotating ring braking device according to claims 1 and 2, wherein the brake ring is provided with rotational resistance means for increasing rotational resistance against oil in the oil tank.