JPH0892826A - Rotary ring for spinning - Google Patents

Abstract

PURPOSE: To provide a rotary ring for spinning enabling to prevent to the utmost a high-frequency vibration of a traveler rotating in high speed along the rotary ring from propagating to the whole rotary ring and obtain several collateral effects. CONSTITUTION: This rotary ring for spinning is assembled by inserting a rotary ring with a clearance through a sliding ring to the inside of a vertically installed ring-like holder and a traveler on the flange part on the top of the rotary ring. At least one cut 2a or a notch is formed along the periphery of the sliding ring. The sliding ring is preferably made of an elastically deformable synthetic resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical ring-shaped holder in which a rotary ring is loosely fitted through a sliding contact ring, and a traveler is loosely fitted in an upper end flange portion of the rotary ring. In this regard, the present invention relates to a rotary ring for spinning, which damps vibrations caused by the turning motion of a traveler as much as possible.

[0002]

2. Description of the Related Art An example of the structure of the above-mentioned spinning ring for spinning (hereinafter referred to simply as "rotary ring") is
It is disclosed in "JP-A-3-8821". Figure 9
The rotary ring 50 of the present invention, whose partial longitudinal section is shown in FIG. 1, is formed as a vertically oriented flat cylinder as a whole. Reference numeral 51 denotes a short cylindrical ring holder that serves as a base portion, and a rotary ring 5 is provided inside the ring holder via a sliding ring 52.
3 is loosely fitted. A traveler 54 is loosely fitted to a flange portion 53a formed on the upper end of the rotating ring 53. The rotating ring 53 has a two-divided structure as shown in the drawing because it is necessary to assemble the sliding contact ring 52. On the lower end side of the rotating ring 53, a skirt-shaped brake shoe 55 made of an elastic material and having a skirt extending around is provided, and a brake ring 56 is mounted on the hem portion of the brake shoe 55. Reference numeral 60 denotes a ring rail to which the rotary ring 50 is attached, which is vertically moved with a predetermined stroke along a spindle (not shown) arranged in a space inside the rotary ring 50 so as to be inserted therethrough. Reference numeral 61 is a stop ring for mounting. The operation of the rotary ring 50 will be briefly described. The spun yarn supplied from above the spindle is fixed to a bobbin mounted on the spindle after the tip of the spun yarn is inserted into the traveler 54. When the spindle is rotated in this state, the traveler 54 swivels along the flange portion 53a and guides the winding on the bobbin while twisting the spun yarn. At the same time, when the ring rail 60 is moved up and down, the spun yarn is wound around the bobbin within a predetermined width range in the axial direction. Then, due to the frictional engagement force generated between the swiveling traveler 54 and the rotating ring 53, the rotating ring 53 is also entrained by the traveler 54 and starts to rotate. As the rotation speed increases, the hem portion of the brake shoe 55 attached to the rotating ring 53 is gradually lifted as indicated by the arrow in FIG. 9, and the brake ring 56 is pressed against the bottom surface of the ring holder 51. by this,
The rotating ring 53 is rotationally braked. Therefore, the rotation peripheral speed of the traveler 54 is suppressed to be equal to or lower than the rotation speed of the spindle, an appropriate tension is applied to the spun yarn, and the bobbin can be wound tightly and evenly.

[0003]

In the above rotary ring 50, high frequency vibration is generated in the traveler 54 that swivels at high speed while slidingly contacting the rotary ring 53. This vibration
It is transmitted to the ring holder 51 via the sliding contact ring 52 and vibrates the entire rotary ring. Then, this overall vibration further amplifies the vibration of the traveler 54. If such vibration occurs, spinning tension,
The balloon tension and the winding tension change, the spun yarn is evenly twisted, the smooth winding of the spun yarn on the bobbin is hindered, and the yarn quality is deteriorated. Moreover, the mechanical fatigue of the rotary ring is accelerated, and its service life is noticeably shortened. Therefore, an object of the present invention is that the high-frequency vibration generated by the traveler turning at high speed along the rotating ring is
It is an object of the present invention to provide a spinning rotary ring which can be prevented from propagating to the whole of the rotary ring as much as possible and can also obtain some additional effects.

[0004]

In order to achieve the above-mentioned object, a spinning rotary ring according to the present invention has a rotating ring 4 inside a vertically arranged ring-shaped holder 1 with a sliding contact ring 2 interposed therebetween. In the case where the traveler 9 is loosely fitted to the flange portion 4a formed at the upper end of the rotating ring, the cut 2a or the notch 2b is provided at at least one position in the circumferential direction of the sliding contact ring 2. It was configured. The sliding contact ring 2 is preferably made of elastically deformable synthetic resin, elastomer or metal.

[0005]

The traveler 9 that guides the winding on the bobbin mounted on the spindle while twisting the spun yarn is
The spun yarn is rotated around the rotating ring 4 at a high speed in response to the turning motion of the spun yarn, and the high frequency vibration is generated in the traveler 9 accordingly. This high-frequency vibration is transmitted to the rotary ring 4 that rotates following by the frictional engagement force generated between the high-frequency wave and the traveler 9,
Further, it is propagated to the ring holder 1 via the sliding contact ring 2 and vibrates the entire rotary ring.
However, since the sliding contact ring 2 of the present invention is made of a material that is elastically deformable and has the cut 2a or the notch 2b at least at one position in the circumferential direction, the rotary ring 4
The vibration of the traveler 9 transmitted to the sliding contact ring 2 via the is effectively damped by the vibrating minute vibration of the sliding contact ring 2 having both the nature and the shape that facilitates vibration,
The vibrational energy propagated through the rotary ring is significantly reduced. Further, in order to ensure the smooth rotation of the rotary ring, the conventional sliding contact ring is required to have high dimensional accuracy with respect to the mounting gap, but the present invention is provided with the cuts 2a and the cutouts 2b in the circumferential direction. Sliding contact ring 2 is rotating ring 4
With respect to the eccentric rotation motion of "coma motion" at the beginning of the rotation, the "relief behavior" is performed, so that the rotation ring 4 can be smoothly and quietly rotated even if the dimensional accuracy of the sliding contact ring 2 is relatively low. In addition, when assembling the rotary ring, a break 2
Since the sliding contact ring 2 provided with a can be expanded considerably in diameter, unlike the conventional one shown in FIG. 9, the rotating ring 4 can be easily assembled without a troublesome division structure.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of the present invention will be described below with reference to the drawings. FIG. 1 shows a partial vertical cross section of the rotary ring A. Reference numeral 1 denotes a flat cylindrical ring holder, which is arranged vertically as shown in the drawing. A mounting groove 1a for mounting the ring holder 1 on the ring rail 60 is provided around the lower portion of the outer peripheral surface of the ring holder 1. A stop ring 61 is fitted in the mounting groove 1a. On the upper part of the inner peripheral surface of the ring holder 1, a step surface 1b forming one half side of the ring housing groove 2a into which the sliding contact ring 2 is loosely fitted.
Is provided. Further, a collar 3 for retaining the sliding contact ring 2 is fitted on the upper portion of the ring holder 1.

Reference numeral 4 is internally fitted to the ring holder 1 via a cylindrical rotating ring and a sliding contact ring 2, and the upper portion thereof projects above the ring holder 1. A flange portion 4a having a T-shaped cross section is provided around the protruding end. On the outer peripheral surface of the rotating ring 4, a ring receiving groove 4b forming the other half side of the ring receiving groove 2a is provided at a position facing the step surface 1b of the ring holder 1. A ring-shaped plate-shaped dust cover 5 is fitted over the ring receiving groove 4b.

The sliding contact ring 2 of this embodiment shown in FIG.
Is selected from so-called engineering plastics, elastomers or metals, which are elastically deformable, have excellent heat resistance, wear resistance, toughness, etc. and have a low friction coefficient. Then, a cut 2a is provided at one position in the circumferential direction.

At the lower end of the rotary ring 4, six brake elements 6 having the shape shown in FIG. 3 are fitted to the lower end as shown in FIG. 1, and the brake has an L-shaped cross section. The assembly ring 7 is assembled around the outer periphery of the assembly ring 7 at equal intervals. This brake element 6 is a flange portion 7a of the brake assembly ring 7.
One end side of which is pivotally supported by a pivot pin 8 projecting upward, and is pressed against the inner peripheral surface of the ring holder 1 by a centrifugal force generated along with the high speed rotation of the rotary ring 4 to rotate the rotary ring 4. Brake. A traveler 9 is loosely fitted to the flange portion 4a of the rotary ring 4, as shown in FIG.

Next, the operation of the above configuration will be described. When the spun yarn supplied from above the spindle is set on the spinning machine as described above and the spindle is rotated, the rotary ring 4 follows the turning movement of the traveler 9 as described above.
Is also rotated and the brake assembly ring 7 attached to the rotary ring 4
Also rotates with this. Therefore, each brake element 6
As indicated by the broken line in FIG. 1, due to the centrifugal force generated by this rotation, it rotates outwardly around the pivot pin 8 and is pressed against the inner peripheral surface of the ring holder 1 to rotate the rotary ring. Apply rotational braking to 4. This prevents the rotating ring 4 and the traveler 9 from overrunning the spindle.

By the way, since the rotational speed of the spindle is increased to 20,000 RPM or more in order to increase the spinning speed, the speed of the traveler 9 rotating at a high speed while being loosely fitted in the flange portion 4a of the rotating ring 4 is increased. Causes high frequency vibration.
This high frequency vibration is transmitted to the rotary ring 4 and further propagated to the ring holder 1 via the sliding contact ring 2 to vibrate the entire rotary ring A and further amplify the vibration of the traveler 9.

However, since the sliding contact ring 2 is made of a material that can be elastically deformed and has a cut 2a at one position in the circumferential direction, the vibration of the traveler 9 transmitted through the rotary ring 4 is prevented. The sliding contact ring 2, which has both a property and a shape that easily vibrate, is effectively damped by violent microvibration, and the propagation of vibration to the entire rotary ring A is significantly suppressed.

Further, due to the existence of the cut 2a, the sliding contact ring 2 has room for "escape behavior" with respect to the "eccentric motion-like" eccentric rotation motion at the beginning of the rotation of the rotary ring 4. Therefore, even if the dimensional accuracy of the sliding contact ring 2 is relatively low, the rotating ring 4 and the traveler 9 can be smoothly and quietly rotated. In this way, if the rotating ring 4 and the traveler 9 rotate smoothly, even if the spindle is rotated at a higher speed, the spun yarn is twisted and wound onto the bobbin smoothly, and a uniform yarn is obtained. It can be spun at higher speed.

Further, when the rotary ring A is assembled,
Since the diameter of the sliding contact ring 2 provided with the cut 2a can be increased considerably, unlike the conventional one shown in FIG. 8, the rotary ring 4 can be easily assembled without a troublesome division structure.

4, 5 and 6 show different shapes of the cut 2a provided in the sliding contact ring 2. That is, the cut 2a shown in FIG. 4 is formed in a diagonal cut shape, and the cut 2a shown in FIG. 5 is formed in a V cut shape. According to the experimental results, the sliding contact ring 2 provided with the oblique cut-shaped cuts 2a shown in FIG. 4 was more excellent in vibration absorbing effect than the sliding contact ring 2 shown in FIG.
The reason for this is unclear.

The cut 2a of the sliding contact ring 2 shown in FIG. 5 is V-cut, and the cut 2a of the sliding contact ring 2 shown in FIG.
Both sides of a are formed in a staggered shape.

FIG. 7 shows a sliding contact ring 2 of another embodiment. The difference from the sliding contact ring 2 of FIG.
Are provided in three places. The number of the cuts 2a may be two or four or more.

FIG. 8 shows a sliding contact ring 2 of another embodiment. A feature of this sliding contact ring 2 is that at least a part of one or more cuts 2a is replaced with a cutout 2b. The action of the cutout portion 2b conforms to the cutout 2a.

In the above structure, the object of the present invention can be achieved even if the detailed structure is appropriately changed. For example, the cross-sectional shape of the sliding contact ring 2 is not limited to that shown in the figure, and may be a rectangular shape, a rectangular shape, a circular shape, an elliptical shape, or another cross-sectional shape having a different diameter. The edge of the cut 2a may be rounded.

[0020]

As is apparent from the above description, the spinning rotary ring according to the present invention is made of an elastically deformable material, and has a sliding contact ring provided with a cut or notch at least at one position in the circumferential direction thereof. By incorporating the above, various excellent effects as listed below can be obtained. (A) The vibration of the traveler, which becomes violent in proportion to the increase in the rotation speed of the spindle, is effectively damped by the violent microvibration of the sliding contact ring that has been transmitted through the rotation ring, and the entire rotary ring is attenuated. Propagation of vibration to the ground is significantly suppressed. (B) As a result, even if the spindle is rotated at a higher speed, the spun yarn is smoothly twisted and wound around the bobbin, and a uniform yarn can be spun at a higher speed. (C) Since the sliding contact ring with the cuts has room for “escape behavior” with respect to the “eccentric motion” eccentric rotation motion at the beginning of rotation of the rotating ring, the dimensional accuracy is relatively high. Even if it is low, the rotating ring and traveler can be rotated smoothly and quietly. (D) When assembling the rotary ring, the sliding contact ring provided with the slits can be expanded considerably in diameter, so that unlike the conventional one shown in FIG. 9, the rotating ring does not have to be a troublesome division structure. Easy to assemble.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a sliding contact ring.

FIG. 3 is a perspective view of a brake element of the same.

FIG. 4 shows a second example of a cut provided in the sliding contact ring,
It is a partial perspective view of a sliding contact ring.

FIG. 5 shows a third example of a cut provided in the sliding contact ring,
It is a partial perspective view of a sliding contact ring.

FIG. 6 shows a fourth example of a cut provided in the sliding contact ring,
It is a partial perspective view of a sliding contact ring.

FIG. 7 is a plan view showing another embodiment of the sliding contact ring.

FIG. 8 is a partial perspective view of a sliding contact ring provided with a cutout portion.

FIG. 9 is a partial vertical cross-sectional view showing a conventional example.

[Explanation of symbols]

 A Rotary ring for spinning 1 Ring holder 1a Mounting groove 1b Step surface 2 Sliding ring 2a Cut 2b Notch 3 Color 4 Rotating ring 4a Flange 4b Ring receiving groove 5 Dust cover 6 Brake element 7 Brake assembly ring 8 Pivot pin 9 Traveler 50 Spinning rotary ring 51 Ring holder 52 Sliding contact ring 53 Rotating ring 53a Flange portion 54 Traveler 55 Brake shoe 56 Brake ring 60 Ring rail 61 Stop ring

Claims (2)

[Claims] 1. A rotary ring 4 is loosely fitted inside a vertically arranged ring-shaped holder 1 with a sliding contact ring 2 interposed therebetween.
In the case where the traveler 9 is loosely fitted to the upper end flange portion 4a of the rotating ring, the slit 2a or the notch portion 2b is provided at least at one position in the circumferential direction of the sliding contact ring 2. For rotary ring. 2. The spinning ring for spinning according to claim 1, wherein the sliding contact ring 2 is made of elastically deformable synthetic resin, elastomer or metal.