JPH09263357A - Yarn guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the physical contact of yarn and a guide to avoid a bad effect on the yarn by providing a recessed groove for receiving and guiding the yarn which has air jetting holes for jetting air and floating the yarn from the inner surface thereof. SOLUTION: A recessed groove 11 of a yarn guide is shaped like a letter V in cross section and forms the periphery of a circular member 12. The circular member 12 and a shaft member 13 are integrally formed and the shaft member 13 is fixed to the place where it is used. Many air jetting holes 14,... are made at the bottom of the recessed groove 1 in a radial direction of the circular member 12 such that air is smoothly jetted. The air jetting holes 14,... are made only at the half periphery of the circular member 12 and supplied with compressed air through an air flow hole 15 in the shaft member 13. When the yarn 16 is placed and run in the recessed groove 11, it is floated and guided in a non-contact state by the compressed air jetted form the air jetting holes 14,..., which prevents the damage or the deteriorated quality caused by friction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn guide used in various textile machines and used for guiding a traveling yarn or for directing it in a predetermined direction.

[0002]

Conventionally, a member having a smooth surface made of metal or ceramic has been used as a yarn guide, and the yarn is used so as to run along the surface. Also, a rotatable roller is used,
The yarn is used so that the yarn runs along the surface of the roller while rotating the roller.

Since these yarn guides come into contact with the yarns, even if the surface of the yarn guides is smoothed or a lubricating oil is applied to the yarns, the yarns may be damaged or undergo undesired changes in physical properties. It is impossible to prevent it from happening completely.

It is an object of the present invention to provide a guide for holding a yarn by eliminating physical contact between the yarn and the guide and without adversely affecting the yarn.

[0005]

DISCLOSURE OF THE INVENTION The present invention has a thread having a groove for inserting and guiding a thread and an outlet for jetting gas into the groove to float the thread from the inner surface of the groove. It is an article guide.

The present invention includes the above-described yarn guide having a groove having a V-shaped cross section and an ejection port for ejecting gas vertically from the tip of the bottom of the groove.

The present invention also has a groove having a V-shaped cross-section in the above description, and the gas is ejected from the tip of the bottom of the groove along one side surface of the groove to the ejection port and the other side surface. The jet guides for jetting gas along the yarn guides are arranged alternately in the longitudinal direction of the groove.

The present invention includes the above-described yarn guide in which the ejection port has a shape extending long in the width direction of the groove, and two or more yarns can be separated and passed through the groove.

The present invention further includes, in the above, a yarn guide in which two or more ejection ports are arranged so that the ejected gas intersects in the concave groove and the yarn is floated in the vicinity of the intersecting position. To do.

The present invention includes, in each of the above-mentioned configurations, a yarn guide in which a concave groove is formed on the peripheral surface of a circular member and the circular member is rotatable.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below with reference to the drawings.

1 and 2 show a yarn guide 10 according to the first embodiment of the present invention.

In this yarn guide 10, a groove 11 is formed.
Has a V-shaped cross section and forms a peripheral surface of the circular member 12, and the entire groove 11 extends in a circular shape so as to make one round of the circular member 11. The circular member 12 is formed integrally with the shaft member 13, and the shaft member 13 is fixed to the place of use.

A large number of jet nozzles 14, ... Are provided radially from the center of the circular member 12 so that gas is jetted vertically from the tip of the bottom of the concave groove 11. These spouts 14,
Are arranged only in the upper half of the circular member 12 in FIG. Pressurized air is supplied to these jet outlets 14 through a vent hole 15 passing through the shaft member 13.

Since the yarn guide 10 has the above-mentioned structure, when the yarn 16 is fitted into the groove 11 and is run,
It is floated by the pressurized air ejected from the ejection ports 14, ... And guided in a non-contact state.

FIG. 3 shows a yarn guide 20 according to the second embodiment of the present invention.

In this yarn guide 20, a concave groove 21
Is similar to the yarn guide 10, has a V-shaped cross section, and forms a peripheral surface of a circular member 22. The entire groove 21 extends in a circle so as to go around the circular member 21 once. The circular member 22 is formed integrally with the shaft member 23, and the shaft member 23 is fixed to the place of use.

The jet ports 24, ... Are jet nozzles for jetting gas from the tip of the bottom of the concave groove 21 along one side surface of the concave groove and jet nozzles for jetting gas along the other side surface of the concave groove. A large number are provided radially from the center of the circular member 22 so as to be alternately arranged in the direction. These ejection ports 24, ... Are arranged only in the upper half of the circular member 22. Pressurized air is supplied to these ejection ports 24, ... Through a vent hole 25 passing through the shaft member 23.

Since the yarn guide 20 is constructed as described above, when the yarn 26 is fitted into the groove 21 and is run,
The concave groove 2 is formed by the pressurized air ejected from the ejection ports 24, ....
It is made to float from each side surface of 1 and is guided in a non-contact state. At this time, since the jetted pressurized air flows along each side surface of the concave groove 21, a strong holding force is obtained against shaking of the yarn 26 in the width direction of the concave groove.

FIG. 4 shows a yarn guide 30 according to the third embodiment of the present invention.

In this yarn guide 30, a concave groove 31
Has a trapezoidal cross section and is formed with a peripheral surface of a circular member 32, and the entire groove 31 extends in a circle so as to encircle the circular member 32 once. The circular member 32 is formed integrally with the shaft member 33, and the shaft member 33 is fixed to the place of use.

A large number of ejection ports 34, ... Are provided radially from the center of the circular member 32 so as to eject gas vertically from the bottom of the concave groove 31. These spouts 34, ...
Each has a flat shape with a small thickness and extends in the width direction of the concave groove 31, and is disposed only in the upper half portion of the circular member 32. The jet member 34, ...
Pressurized air is supplied through a vent hole 35 passing through.

Since the yarn guide 30 is constructed as described above, when a plurality of yarns 36, 36 are fitted in the groove 31 in parallel and run, the pressure is ejected from the ejection ports 34, .... The yarns 36, 36 are floated from the bottom of the groove 31 by the air, and are guided in a non-contact state.

FIG. 5 shows a yarn guide 40 according to the fourth embodiment of the present invention.

In this yarn guide 40, the concave groove 41
Has a trapezoidal cross section and forms a peripheral surface of a circular member 42, and the entire groove 41 extends in a circle so as to make one round of the circular member 32. The circular member 42 is formed integrally with a shaft member 43, and the shaft member 43 is rotatably attached to a place of use by a ball bearing or an air bearing (not shown).

A plurality of jet outlets 44, ... Are provided in a radial manner from the center of the circular member 42 so that the gas jetted from the set intersects in the concave groove 41. These spouts 44, ... Are arranged on the entire circumference of the circular member 42. Pressurized air is supplied to these ejection ports 44, ... Through a vent hole 45 passing through the shaft member 43.

Since the yarn guide 40 has the above-described structure, when the yarn 46 is fitted into the groove 41 and is run,
By the pressurized air ejected from the ejection ports 44, ..., It is levitated in the vicinity of the intersecting position of the ejected gas, and in a non-contact state,
You will be guided. At this time, the jetted pressurized air pushes the yarn 46 from two directions, so that a stable and strong holding force can be obtained. Further, when the supply of the pressurized air is stopped or when the yarn 46 is applied with excessive tension, the yarn 46 contacts the groove 41, but the circular member 42 rotates, so that the yarn 46 is large. Damage is prevented.

In each of the above-mentioned embodiments, the concave groove is formed in the circular member, and the overall shape is circular, but it goes without saying that other shapes can be used as long as they do not rotate. . Further, the position, number, and shape of the ejection ports are not limited to those described above, and can be set in various ways.

[0029]

The yarn guide of the present invention, as described above,
Since the yarn is floated by the pressurized gas and guided in a non-contact manner, the yarn is not damaged by friction and its quality is not deteriorated. Further, since the yarn guide itself is not in contact, it has a long life and its material is not limited to conventional hard materials such as ceramics and cemented carbides, and can be any material.

[Brief description of drawings]

FIG. 1 is a side sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along a concave groove of the same form.

FIG. 3 is a side sectional view of a second embodiment of the present invention.

FIG. 4 is a side sectional view of a third embodiment of the present invention.

FIG. 5 is a side sectional view of a fourth embodiment of the present invention.

[Explanation of symbols]

10, 20, 30, 40 ... Thread guides 11, 21, 3
1, 41 ... Recessed groove, 12, 22, 32, 42 ... Circular member,
13, 23, 33, 43 ... Shaft member, 14, 24, 34,
44 ... Jet port, 15, 25, 35, 45 ... Vent hole, 1
6, 26, 36, 46 ... Yarn.

Claims (6)

[Claims] 1. A yarn guide having a groove for inserting and guiding the yarn and an ejection port for ejecting gas into the groove to float the yarn from the inner surface of the groove. 2. The yarn guide according to claim 1, which has a groove having a V-shaped cross section and an ejection port for ejecting gas perpendicularly from the tip of the bottom of the groove. 3. The method according to claim 1, wherein the groove has a V-shaped cross section, and the gas is ejected from the bottom end of the groove along one side surface of the groove along the other side surface. A yarn guide in which ejection ports for ejecting gas are alternately arranged in the longitudinal direction of the groove. 4. The yarn guide according to claim 1, wherein the ejection port has a shape that extends in the width direction of the groove so that two or more yarns can be separated and passed through the groove. 5. The two or more jet outlets according to claim 1,
A yarn guide in which the jetted gas intersects in the groove and floats the yarn near this intersection. 6. The yarn guide according to claim 1, wherein the groove is formed on the peripheral surface of the circular member, and the circular member is rotatable.