JPH01104840A - Rotating ring for spinning - Google Patents

Abstract

PURPOSE:To prevent deflection of a rotating body or 'MISO' (fermented bean paste) braying rotation, by play fitting an annular slide ring of rhombic cross section between a V-groove on the inner peripheral surface of a holder and a V-groove on the outer peripheral surface of the ring rotating body. CONSTITUTION:An annular slide ring 8 is play fitted between a V-groove 11 of a holder 7 and a V-groove 10 of a ring rotating body 1 through a fine gap to constitute a bearing mechanism. When the ring rotating body is rotated at a low speed, the lower slope of the V-groove 11 is brought into slide contact with the lower slope on the outer periphery of the slide ring and the upper slope of the V-groove 10 is brought into slide contact with upper slope on the inner periphery of the slide ring. When the ring rotating body is rotated at a high speed, the upper slope of the V-groove 11 is brought into slide contact with the upper slope on the outer periphery of the slide ring and the lower slope of the V-groove 10 is brought into slide contact with the lower slope on the inner periphery of the slide ring.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a rotating ring for spinning, and in particular to a passive rotating ring in which a ring rotating body rotates by applying torque to the sliding dust alF resistance of a rotating traveler. Regarding.

[Conventional technology and its problems]

In a passive rotating ring in which a ring rotating body rotates using the sliding friction resistance of a traveler as torque, a bearing mechanism that rotatably supports the ring rotating body is, for example, disclosed in Japanese Patent Publication No. 54-15.
No. 934 or JP-A-58-156037.

In these conventional bearing mechanisms, all of the sliding friction caused by the rotation of the ring rotating body is received by the bearing part of the fixed holder.
0ORP M spindle rotation is medium ball (30~80%
), in the case of a yarn type capable of spinning 16,000 PPM, the rotation of the ring rotating body basically changes according to changes in the rotation of the spindle, while the bearing part of the holder is fixed. Even in a simple comparison, the relative friction speed ratio is 13:16 (-100: 123), but the rotational torque applied to the ring rotating body is proportional to the product of the friction pressure of the traveler and the spinning tension, and the ring rotating body is proportional to the spindle rotation. As the speed increases, the speed increases by drawing an ``rJ curve''.

In other words, the ring rotating body rotates at variable speeds in response to increases and decreases in rotational torque due to changes in the horizontal component of the centrifugal force applied to the traveler weight and the upward lifting component of the spinning tension, but the holder is not fixed to a ring rail or the like. Since the speed is zero regardless of the speed change of the ring rotating body, if the frictional resistance value between the ring rotating body and the bearing part of the holder exceeds the rotational torque of the ring rotating body, the ring rotating body does not rotate.

That is, the smaller the product of the friction coefficient of the bearing and the weight of the ring rotating body, the lower the torque the ring rotating body rotates. If the spinning tension limit (approximately 40 g for 60 count yarn made of 100% cotton or acrylic) is exceeded, the yarn will break, so the rotational frictional resistance of the ring rotating body as a load on the traveler cannot exceed this limit, that is. The rotation increase limit of the ring rotating body is determined by the frictional resistance of the shaft bearing in the passive rotating ring.

On the other hand, as is known from Japanese Patent Publication No. 54-13528, in a bearing mechanism using pneumatic pressure, the ring rotating body becomes an air bearing and does not come into contact with the holder, and the frictional resistance approaches zero, so the ring rotating body due to inertia The rotation speed of the traveler rapidly increases to the same speed as that of the traveler, and the balloon control function based on spinning tension is lost. It is not possible to absorb fluctuations in the spinning tension corresponding to changes in the position of the spinning balls leading to the tube, and for this reason, if the ring rotating body moves at the same speed as the traveler, there will be problems such as wrinkles, fluffing, and other deterioration of yarn quality. there were. In addition, there were difficulties in implementation due to the cost of separate power sources such as an air compressor as the air power source required for the air bearing mechanism, equipment costs such as piping to the spinning machine, and workability such as air pressure adjustment.

In order to solve this problem, as shown in FIG. We have proposed a passive rotating ring having a bearing mechanism that is loosely fitted between the holder 24 and the holder 24. According to this, the slide ring 27 rotates at a speed lower than the rotation speed of the ring rotating body 21, the relative speeds between the ring rotating body and the slide ring, and between the slide ring and the holder are halved, and the frictional resistance is reduced. Decrease spinning speed by 20-50%
It was possible to raise it.

However, in the passive rotating ring shown in FIG. 4, since the inner circumferential surface of the slide ring 27 is parallel to the axis, the radius between the inner circumferential surface of the slide ring 27 and the U-shaped groove 28 formed on the outer circumferential surface of the ring rotating body ze1 is If the play in the direction becomes too large due to variations in accuracy or loosening of the fitting part, the ring rotating body 21 may run out, and if it becomes too small, the ring rotating body 2 may lose the play.
The ring rotating body 21 rotates integrally with the ring rotating body 21 due to the vertical play due to the difference between the width of the U-shaped groove 28 of the ring rotating body 21 and the thickness of the slide ring 27. It is easy to cause horizontal waving or sliding rotation due to the movement of the lifting force point, and during sliding rotation,
Two sides e, f or e, g of the U-shaped groove 28 of the ring rotating body 21 and one side of the upper and lower sides of the 7-shaped groove of the holder 25 or i
Since there is a total of three surfaces in contact, the frictional resistance is large and it is difficult for the ring rotating body to move smoothly at low torque.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a rotating ring for spinning that prevents the ring rotating body from running out or slipping, and has a bearing mechanism that does not become an air bearing.

[Means to solve the problem]

In view of the above-mentioned problems, the present invention provides a rotating ring for spinning comprising a holder and a ring rotating body rotatably supported by the holder via a bearing mechanism, in which the inner circumferential surface of the holder and the ring Approximately V on the outer peripheral surface of the rotating body
An annular slide ring, in which V-shaped grooves are formed, is made of a sliding material, has a diamond-shaped cross section, and has an outer circumferential surface and an inner circumferential surface each having an inclination angle with respect to the axis of the holder. (2) The ring is loosely fitted with a small gap between the groove and the V groove of the ring rotating body, and the bearing mechanism is constituted by the 6V groove and the slide ring.

[For production]

The slide ring is rotatable relative to the ring rotating body and the holder, and rotates at a rotational speed lower than the rotational speed of the ring rotating body. When the ring rotating body rotates at low speed because the spinning tension is smaller than the weight of the ring rotating body and the rotating torque of the traveler is also small, the lower slope of the V-groove of the holder, the upper slope of the outer circumference of the slide ring, and the outer circumferential upper slope of the slide ring When the upper slope of the inner periphery and the lower slope of the groove of the ring rotating body are in sliding contact with each other, the spinning lifting tension exceeds the weight of the ring rotating body, and high torque is applied to the ring rotating body, the ring rotating body rotates at high speed. The lower slope of the V-groove of the holder and the upper slope of the outer periphery of the slide ring, and the upper slope of the inner periphery of the slide ring and the lower slope of the V-groove of the ring rotating body are in sliding contact, respectively.

【Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a ring rotating body 1 has a lower rotor 3 fitted into a flange rotor 2 having a ring flange portion 2a on which a traveler 34 slides and rotates, and the lower rotor 3 is made of an elastic body such as synthetic rubber. A buffer engagement member 4 integrally formed with a reinforcing metal ring 5 is press-fitted. A fitting groove 6 is formed on the inner circumferential surface of the flange rotor 2, and an annular protrusion 3a formed on the outer periphery of the upper end of the lower rotor 3 fits into this fitting groove 6. The rotor 2 and the lower rotor 3 are integrated and are prevented from being removed without using a special tool.

The upper end of the lower rotor 3 is provided with radial grooves 3b at a plurality of locations in the circumferential direction to facilitate fitting of the annular projection 3a into the fitting groove 6.

A brake shoe 4a that deforms outward and upward by centrifugal force is provided at the lower end of the buffer engagement member 4.

After the holder 7 is fitted into the mounting hole 35a of the ring rail 35, a stop ring 36 is fitted into the mounting circumferential groove 7a and is fixed.

In addition, 12 is a dust cover, 31 is a bobbin, 32 is a tube yarn, 33 is a spun yarn, and 34 is a traveler.

Referring also to FIG. 2, on the outer peripheral surface of the ring rotating body 1 and the inner peripheral surface of the holder 7, there are V-shaped grooves 10 consisting of a lower slope 10a and a lower slope tab, and a lower slope 11a and a lower slope. 1
A V-shaped V-groove 11 consisting of V-shaped grooves 10 and 1b is formed, and a slide ring 8 is loosely fitted into these V-grooves 10.11.

The slide ring 8 is made of a sliding material having a low coefficient of friction, wear resistance, and conductivity, such as carbon fiber-containing tetrafluoride resin,
Or, it is made of engineering plastic such as polyamide-imide, and has a diamond-shaped cross section and has outer peripheral slopes 9a, 9.
b and inner peripheral slope 9c.

9d are flexible annular bodies each having an inclination angle of about 45 degrees with respect to the axis. Slide ring 8 and each slope 10a, 10b, Ila, 1 of each V groove 10.11
1b, there are micro gaps a, b, c, d
Therefore, the slide ring 8 can be rotated relative to both the ring rotating body l and the holder 7, and the bearing mechanism G can be installed here.
is configured.

That is, the ring rotating body 1 is rotatably supported by the holder 7 via the bearing mechanism G composed of the grooves 10 and 11 and the slide ring 8.

゛In assembling the bearing mechanism G, first, with the slide ring 8 bent inward, press the
° Fitting into the groove 11 Next, the lower rotor 3 is fitted into the flange rotor 2 with the slide ring 8 in between, thereby integrally forming the ring rotating body l.
The slide ring 8 is fitted into the V-groove 10 of the ring rotating body 1.

After that, the ring rotating body l and the holder 7 are rubbed together under pressure with the slide ring 8 sandwiched between them to generate frictional heat on the surface of the slide ring 8, thereby smoothing the surface of the slide ring 8 and Next, the buffer engagement member 4 and the metal ring 5 integrated therewith by simultaneous molding are fitted into the lower opening 3.

Next, the operation of the rotating spinning ring configured as described above will be explained.

When the ring rotating body 1 is stopped or the rotation speed is low, the ring rotating body 1 and the slide ring 8 are pressed downward by their weight, and the V of the holder 7
The lower slope 11b of the groove 11, the lower outer peripheral slope 9b of the slide ring 8, and the upper inner peripheral slope 9c of the slide ring 8
and the upper slope 10a of the groove 10 of the ring rotating body 1 come into sliding contact with each other, and as the tension of the spun yarn 33 increases, the ring rotating body 1 rotates at high speed, and the upward lifting force increases, the holder 7 ■The upper slope 11a of the groove 11, the upper outer peripheral slope 9a of the slide ring 8, the lower inner peripheral slope 9d of the slide ring 8, and the V-groove 10 of the ring rotating body 1
are in sliding contact with the lower slopes 10b, respectively.

In any of these cases, the ring rotating body 1 is indirectly supported in contact with the holder 7 via the slide ring 8, so that unnecessary play does not occur, and the bearing mechanism G does not change to an air bearing. At the same time, a centripetal force is exerted by the tapered surface having an inclination angle with respect to the axis, and the ring rotating body 1 rotates stably without causing runout or horizontal undulating rotation. Moreover, slide ring 8
rotates at a speed lower than the rotational speed of the ring rotating body 1 due to moderately low frictional resistance, and the relative speeds of the ring rotating body 1, slide ring 8, and holder 7 at their respective contact surfaces become small, and the frictional resistance remains and ring rotating body 1
rotates smoothly.

In a free state when the ring rotating body 1 is stationary, the brake shoes 4a are in a non-contact state with an appropriate gap between them and the lower end surface 7b of the holder 7, but when rotating, the brake shoes 4a are in a horizontal state due to centrifugal force. It deforms upward as it moves, and gradually lifts from the state shown by the solid line to the state shown by the chain line in FIG. If the ring rotating body l reaches an excessively high speed, the brake shoe 4
a comes into contact with the lower end surface 7b of the holder 7, and the contact pressure exerts a force to pull down the ring rotating body 1,
A braking force due to friction is generated at the contact surface between the brake shoe 4a and the holder 7, and this prevents the ring rotating body 1 from reaching the same speed as the traveler 34, thereby preventing excessive speed increase.

The dust cover 12 prevents cotton dust and other fine particles from being removed from the bearing mechanism G.
Prevent them from falling into the interior. Even if a fine object enters the bearing mechanism G, if the volume of the fine object is larger than the minute gap of the bearing mechanism G, the coffee mill or flat belt is It is discharged outward from the gap between the upper and lower ends of the ring rotating body l, which has a large diameter, on the principle of paired pulleys.

Since the holder 7 is an integral piece, it is easy to increase the accuracy of the groove 11, and the accuracy does not change due to the rotation or vibration of the ring rotating body 1, compared to known methods such as press-fitting, in which the upper and lower parts are assembled. It will not be damaged. Also,
Integrating the upper and lower water seat rings eliminates the need for high-precision machining required for assembling two parts, and significantly reduces manufacturing costs by reducing the number of parts and processing and assembly man-hours.

FIG. 3 is a partial sectional view of a ring rotating body 1a according to another embodiment.

In FIG. 3, a female thread 16a is formed on the inner peripheral surface of the lower end of the flange rotor 13, and a male thread 16a is formed on the outer periphery of the upper end of the lower rotor 14.
b is screwed to an appropriate position, thereby integrating the flange rotor 13 and the lower rotor 14. Note that 15 is a disc spring for preventing loosening, and the lower end surface of the lower rotor 14 is provided with a cut groove (not shown) into which a tool is inserted to screw the lower rotor 14.

When assembling this ring rotating body 1a, after applying an adhesive (for example, Sealock MEC or LockTie 1-) to the female thread 16a and the outer thread 16b to prevent them from loosening, insert the slide ring 8, and then The lower rotor 14 is rotated using a suitable tool to form minute gaps a and b between the V-groove lO and the slide ring 8.

Adjust C (see Figure 2) to the optimum size.

In this way, when the flange rotor 13 and the lower rotor 14 are integrated by screw connection, minute gaps a, b, c
, the rotation I2 of the ring rotating body 1a! It can be finely adjusted to the optimum condition according to friction resistance, etc.

Therefore, for a large number of rotating rings for spinning, the processing tolerances of each part are absorbed and micro-gaps a are created for each product.

It is possible to eliminate variations in b and c and adjust them so that they are properly uniform.

In the above-described embodiment, the slide ring 8 has a square rhombus shape with four equal internal angles, but the slide ring 8 does not have to have a square shape.

〔Effect of the invention〕

According to the present invention, the frictional resistance is low, and the ring rotating body rotates even with light spinning tension and small torque. Also, even at low and high speed rotations, the ring rotating body is prevented from wobbling or slipping, and stable rotation is achieved. In addition to being able to obtain
It can be provided at low cost.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention, in which FIG. 1 is a front sectional view of a rotating ring for spinning, FIG. 2 is an enlarged view of the bearing mechanism of the rotating ring for spinning in FIG. 1, and FIG. The figure is a partial cross-sectional view showing another embodiment of the ring rotating body, and FIG. 4 is a partial cross-sectional view of a conventional spinning ring. 1.1a...Ring rotating body, 7...Holder, 8.
...Slide ring, 9a, 9b...Outer peripheral slope, 9c
. 9d...Inner peripheral slope, 10.11...V groove, 10a.
...Upper slope (outer slope), 10b...Lower slope (outer slope), lla...Upper slope (inner slope), llb...
Lower slope (inner peripheral slope), G... Bearing mechanism. Applicant Hiroshi Yamaguchi Applicant Thu
Hiro Mura Agent Patent Attorney Kubo
Yukio Yuki

Claims (1)

[Claims] (1) In a rotating ring for spinning comprising a holder and a ring rotating body rotatably supported by the holder via a bearing mechanism, the inner circumferential surface of the holder and the outer circumferential surface of the ring rotating body are The annular slide ring is formed with substantially V-shaped V grooves, is made of a sliding material, has a diamond-shaped cross section, and has an outer circumferential surface and an inner circumferential surface each having an inclination angle with respect to the axis. For spinning, characterized in that the V-groove of the holder and the V-groove of the ring rotating body are loosely fitted with a small gap between them, and the bearing mechanism is constituted by these V-grooves and the slide ring. rotating ring.