JPH09202527A - Fiber supplying pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the frictional resistance of a fiber to travel in a fiber supplying pipe, so as to stabilize the quality of the fiber, by projectingly providing many coil projecting lines arranged in the longitudinal direction so that the fiber may travel by being brought in intermittent contact with the inner wall surface of a pipe body. SOLUTION: A fiber supplying pipe P is provided with a pipe body 1 in which a fiber passage 3 is formed and a pair of ceramic-made eyelet guides 2 respectively fitted and connected on both ends of the pipe body 1. Many coil projecting lines 4 arranged in the longitudinal direction of the pipe body 1 at the constant interval so that fiber to pass through the pipe body 1 may travel by being brought into intermittent contact with it, and for restraining the contact of the fiber with the inner wall surface 1a are projectingly provided on the inner wall surface 1a of the pipe body 1. In this case, the coil projecting lines are formed into such a shape as to be spirally curved around the axis of the pipe body 1, and continuously connected to one another, and the sectional form of each coil projecting line 4 is formed into a corrugated shape in which the whole is bent into a circular arc shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn supplying pipe for guiding a fiber yarn supplied to a textile machine such as a draw false twisting machine and a circular knitting machine.

[0002]

2. Description of the Related Art When a fiber yarn supplied to a textile machine passes through a yarn supplying pipe, the fiber yarn is contacted with the inner wall surface of the yarn supplying pipe to reduce the frictional resistance received, for example, the inner wall surface is pear-shaped. A yarn feeding pipe formed on the ground is used.

[0003]

The fiber yarn unwound from the yarn supplying bobbin and supplied to the textile machine at a high speed runs at a high speed while ballooning when passing through the yarn supplying pipe. The inner wall surface of the pipe is repeatedly rubbed and subjected to strong frictional resistance, causing feathering and yarn breakage in the fiber yarn. Further, in the synthetic fiber yarn processing step, when the fiber yarn passes through the yarn feeding pipe installed between the yarn feeding bobbin and the delivery roller, the fiber yarn is not applied to the inner wall surface of the yarn feeding pipe. Upon contact, the oil agent applied to the fiber yarn adheres to the inner wall surface of the yarn supplying pipe, and the adhered oil agent hardens and accumulates. Standing, single yarn breakage, abnormal drawing, etc. occur, and the quality of the fiber yarn significantly deteriorates. It is an object of the present invention to reduce the frictional resistance received by a fiber yarn running in a yarn supplying pipe to stabilize the quality of the fiber yarn passing through the yarn supplying pipe.

[0004]

The invention of claim 1 is arranged in the longitudinal direction of the pipe body so that the fiber yarn runs intermittently in contact with the inner wall surface of the pipe body through which the fiber yarn passes. It also has a configuration in which a large number of coil protrusions are provided in a protruding manner.

According to the first aspect of the present invention, when the fiber thread passes through the pipe body, the fiber thread travels by contacting the tops of the coil projections without contacting the inner wall surface of the pipe body. The frictional resistance received by is reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, each of the coil bodies is formed in a spirally curved shape and connected in series.

According to the second aspect of the present invention, when cleaning the inside of the pipe body, the cleaning liquid does not remain in the pipe body and flows out of the pipe body along the coil ridges.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Each coil protrusion is formed in a circular ring shape and arranged in a discontinuous state in the longitudinal direction of a pipe body.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a yarn supplying pipe P that protects and guides the fiber yarns supplied to the textile machine is installed, for example, between the yarn supplying package and the textile machine. When a plurality of yarn supplying pipes P are installed in a bent state, the adjacent yarn supplying pipes P guide the fiber yarn by changing its traveling direction.
Connected by shaped thread elbows.

The yarn feeding pipe P includes a pipe body 1 in which a yarn passage 3 is formed, and a pair of ceramic eyelet guides 2 which are fitted and connected to both ends of the pipe body 1, respectively. I have it. This yarn feed pipe P
Is usually made of a stainless steel seamless tube or an aluminum seamless tube.

On the inner wall surface 1a of the pipe body 1, the fiber yarns Y passing through the inside of the pipe body 1 are arranged at regular intervals in the longitudinal direction of the pipe body 1 so that the fiber yarns Y run intermittently in contact with each other. A large number of coil ridges 4 are provided so as to prevent contact between Y and the inner wall surface 1a of the pipe body 1. Fiber yarn Y
The coil protrusions 4 may be arranged at irregular intervals depending on the nature of the above.

In the present example, each coil ridge 4 is formed in a shape that is spirally curved around the axial center of the pipe body 1 and is connected in a continuous manner. Are formed in a wavy shape curved in an arc shape.

In the pipe body 1, for example, while rotating a raw pipe for a yarn feeding pipe, a rotary blade pressed against the outer peripheral surface of the raw pipe is continuously moved in the axial direction of the raw pipe, and It is produced by a method of forming a continuous coil projection 4 which is curved in a spiral shape in a state of bulging inward from the wall surface 1a, and a continuous groove groove 5 is formed in the outer peripheral surface of the pipe body 1 in a spiral shape. It is recessed.

However, the rotary blade is intermittently pressed against the outer peripheral surface of the rotating raw pipe to intermittently move in the axial direction, and as shown in FIG. 2, it bulges from the inner wall surface 1a of the pipe body 1 and is not axially moved. A plurality of circular ring-shaped coil protrusions 4 arranged in a continuous state may be provided on the inner wall surface 1a of the pipe body 1 so as to project.

The arrangement pitch of the coil protrusions 4, the height from the inner wall surface 1a of the pipe body 1, and the cross-sectional shape are appropriately selected according to the properties of the fiber yarn Y, the yarn speed, and the like.

The inner wall surface 1a of the pipe body 1 may be processed with a fine abrasive so that the inner wall surface 1a becomes a matte surface.

Tables 1, 2 and 3 show two alumina ceramic snell guides 1 each having a yarn guide hole with a diameter of 4 mm.
When 0 and 10 are installed at an interval of 1 m (see FIG. 3), and the fiber yarn Y unwound from the yarn supplying package B passes through the yarn introducing holes of both snell guides 10, the fiber yarn is The yarn tension applied to Y and the conventional type yarn feeding pipe 11 made of an aluminum seamless pipe having an inner diameter of 10 mm, a length of 1 m, and alumina ceramic eyelet guides attached at both ends are installed horizontally (Fig. 4). ), When the fiber yarn Y unwound from the yarn supplying package B passes through the conventional yarn supplying pipe 11, the yarn tension applied to the fiber yarn Y and the inner diameter of 10 mm and the length of 1 m The height of the inner wall surface 1a of the pipe body 1 is about 0.5 mm, and the arrangement pitch is about 15 mm.
The yarn supplying pipe P with coil protrusions of the present invention having the coil protrusions 4 of FIG.
It shows the result of a comparative test with the fiber tension applied to the fiber thread Y when the fiber thread Y unwound from the wire B passes through the inside of the yarn feed pipe P with the coil protrusion.

As the fiber yarn Y, 15d / 5f semi-drawn nylon yarn, 30d / 10f semi-drawn polyester yarn, and 75d / 36
A semi-stretched polyester yarn of f is used, and the yarn speed is 600 m / min, 800 m / min, and 1000 m / min, respectively, and each fiber yarn Y is in the yarn guide hole of the snell guide 10 and the conventional yarn feeding pipe. 11
Inside, each yarn tension immediately after passing through the inside of the yarn feeding pipe P with the coil protrusion was measured.

[0019]

[Table 1]

[0020]

[Table 2]

[0021]

[Table 3]

According to the above-mentioned test results, the yarn tension is highest when two snell guides 10 are used, and the ballooning of the fiber yarn Y unwound from the yarn feeding package B is performed with two snells. It is difficult to reduce by the guide 10, and the air resistance received by the fiber yarn Y due to the ballooning generated between the two snell guides 10 is the fiber yarn when the fiber yarn Y contacts the inner wall surface of the pipe body. It is shown that it is greater than the frictional resistance received by Article Y.

A comparison between the conventional type yarn feeding pipe 11 and the yarn feeding pipe P with coil ridges shows that the yarn feeding pipe with coil ridges generally has a lower yarn tension than the conventional type yarn feeding pipe 11. In the yarn feeding pipe 11, yarn breakage occurs due to excessive yarn tension, but in the yarn feeding pipe P with coil protrusions, the fiber yarn Y
It has been found that the fiber yarn Y runs without being subjected to an abnormal tension such that a yarn breakage occurs, and the fiber yarn Y is not brought into surface contact with the inner wall surface 1a of the pipe body 1 but is brought into point contact with the top of the coil protrusion 4. It has been found that the running is more effective for reducing the yarn tension.

Further, as shown in FIG. 6, a plurality of yarn feeding pipes P-1, respectively connected by yarn guiding elbows E,
P-2, P-3, P-4, and P-5 are bent at right angles and arranged, and the fiber yarn Y unwound from the yarn supply package B is connected to each yarn supply pipe P-1 to P-5. When the yarn is guided to a predetermined position by means of the yarn, the yarn tensions at the outlets of the yarn supplying pipes P-1 to P-5 increase in a geometric progression as the yarn speed, the number of the yarn supplying pipes and the length increase. However, when the yarn supplying pipes P with coil ridges are arranged, the final yarn tension at the exit of the yarn supplying pipe P at the end is the same as when the conventional yarn supplying pipes 11 are arranged in the same state. It can be remarkably reduced as compared with the tension, and the limit yarn speed in the case of arranging the yarn supplying pipes P with coil protrusions is compared with the limit yarn speed in the case of arranging the conventional yarn supplying pipes 11. Can be increased.

According to the above-described embodiment, the fiber yarn Y passing through the pipe body 1 runs intermittently in point contact with the tops of the coil projections 4, and the inner wall surface 1a of the pipe body 1 and the fiber yarns are run. Since the surface contact with Y is prevented by each coil protrusion 4, when the fiber yarn Y passes through the inside of the pipe body 1, the fiber yarn Y
It is possible to reduce the frictional resistance that is exerted on the fiber yarn Y, effectively reduce the tension applied to the fiber yarn Y, and stabilize the quality of the fiber yarn Y that has passed through the pipe body 1.

Therefore, the limit traveling speed when the fiber yarn Y passes through the pipe body 1 can be increased, and the length of the pipe body 1 necessary for guiding the fiber yarn Y can be extended. The fiber yarn Y can be guided to a distant position with stable yarn tension.

Further, since the coil projections 4 are continuous in a threaded shape, the production of the yarn feeding pipe P can be simplified, and at the time of cleaning the inside of the pipe body 1, the cleaning liquid is used. Since it does not remain inside and flows along the coil projections 4 to the outside of the pipe body 1, it is possible to enhance the draining effect of the cleaning liquid.

[0028]

According to the invention of claim 1, the fiber thread passing through the pipe runs intermittently in point contact with the tops of the respective coil projections, and the fiber thread runs between the inner wall surface of the pipe and the fiber thread. Since the surface contact is blocked by each coil protrusion, it is possible to effectively reduce the tension applied to the fiber yarn by reducing the frictional resistance received by the fiber yarn when the fiber yarn passes through the pipe body. It is possible to stabilize the quality of the fiber yarn that has passed through the pipe body.

Therefore, it is possible to increase the limit traveling speed when the fiber yarn passes through the pipe body and to stabilize the fiber yarn by extending the length of the pipe body necessary for guiding the fiber yarn. It is possible to guide to a distant position by the thread tension.

According to the second aspect of the present invention, since each coil ridge is continuous in a threaded shape, it is possible to simplify the production of the yarn feeding pipe, and to wash the inside of the pipe with a washing liquid. Since it does not remain in the pipe body and flows along the coil projections to the outside of the pipe body, the draining effect of the cleaning liquid can be enhanced.

[Brief description of drawings]

FIG. 1 is a side sectional view of a yarn feeding pipe showing an embodiment of the present invention.

FIG. 2 is likewise a side sectional view showing another example of the yarn feeding pipe.

FIG. 3 is a side view illustrating a state in which a fiber yarn is guided by two snell guides.

FIG. 4 is a side view illustrating a state in which a fiber yarn is guided by a conventional yarn feeding pipe.

FIG. 5 is a side view illustrating a state in which a fiber yarn is guided by the yarn feeding pipe of the present invention.

FIG. 6 is a side view illustrating a state in which a plurality of yarn feeding pipes are arranged.

[Explanation of symbols]

 1 Pipe Body 1a Inner Wall Surface 2 Eyelet Guide 3 Thread Passage 4 Coil Projection B B Yarn Supply Package P Yarn Supply Pipe Y Fiber Yarn

Claims (2)

[Claims] 1. A large number of coil protrusions arranged in the longitudinal direction of the pipe body so that the fiber yarn runs intermittently in contact with the inner wall surface of the pipe body through which the fiber yarn passes. A yarn feeding pipe characterized in that 2. The yarn feeding pipe according to claim 1, wherein each of the coil bodies is formed in a spirally curved shape and connected in a series.