JPS59194976A - Thread absorbing device - Google Patents

Abstract

PURPOSE:To absorb a thread at a high speed with a low noise by forming a fluid spraying section with multiple fine holes in a device spraying a high-pressure fluid to introducibly absorb the thread in accordance with the viscous resistance of the sprayed fluid. CONSTITUTION:A thread passage 7 is provided in the center of a pressurized chamber 6 through which a pressurized liquid is fed by pressure from a fluid passage 5, and multiple fine holes 8 communicated to the pressurized chamber 6 are formed around this thread passage 7. These fine holes 8 are provided so that the pressurized liquid sprayed from here is converged at one point. Accordingly, a thread absorbing device 11 is constituted, thread Y spun out of a mouthpiece 10 is extended, withdrawn and discharged along with the pressurized liquid, and the discharged thread Y is stacked into a bar shape in a collecting section 12, then the fluid is discharged to be separated from the thread Y.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a suction device for a yarn material traveling at high speed.

2. Description of the Related Art Conventionally, yarn suction devices that utilize jetting force of fluid such as air or liquid are known.

However, those that use air have the following drawbacks.

(1) Air is a compressible fluid, and when compressed air is ejected from a suction device, it expands rapidly, causing extremely loud noise and deteriorating the working environment.

(2) Compressed air manufacturing costs are high, and running costs are high.

(3) Since air has a small density and viscosity, the suction energy is small, and a special pressure chamber (for example,
7 33736) is required.

(4) Wet threads adhere to the inner wall of the suction device, reducing suction ability.

FIG. 1 is a longitudinal cross-section of a yarn suction device using liquid disclosed in Japanese Utility Model Publication No. 51-28424, but this device also has the following drawbacks.

(1) The liquid ejecting part 4 formed by the main body 1 and the outer wall of the yarn suction tube 3 is annular, and the liquid ejecting area becomes large and the flow rate becomes large. On the other hand, in order to reduce the flow rate, the annular gap 4 must be made extremely thin, and it is difficult to create identical windows between the inner and outer walls of the annular ring.
Due to machining accuracy, it is difficult to obtain an annular flow with uniform thickness. Furthermore, it is difficult to adjust the annular clearance to a desired size, resulting in a difference between the weights.

(2) Because the liquid spouts out in a thin annular shape,
It is easily affected by the accompanying airflow that enters with the yarn from the yarn suction port 3, and the membrane layer collapses, reducing the suction force and causing suction errors. In order to compensate for this drawback, a liquid introduction pipe is provided in the yarn suction tube in front of the tube 2 to supply a volume of liquid approximately equal to the amount of air sucked in from the yarn suction port 3 to prevent the entrainment of accompanying airflow. However, this method has a practical problem in increasing the flow rate of liquid.

The object of the present invention is to overcome the problems described above and provide a yarn suction device that is capable of high-speed yarn suction at low cost and low noise, can be adjusted to a constant flow rate, and has no difference between spindles. The purpose is to

The present invention is a yarn suction device that jets out high-pressure liquid and suctions the yarn according to the viscous resistance of the jetted fluid, characterized in that the fluid jetting part is formed with a plurality of small holes. It is a yarn suction device.

FIG. 2 shows one embodiment of the present invention. Pressurized liquid is forced into the pressurizing chamber 6 from the fluid passage 5. A yarn passage 7 is provided in the center of the pressure chamber, and a pore 8 communicating with the pressure chamber 6 is formed around the yarn passage.

A plurality of pores 8 are formed to eject pressurized liquid, but the ejected liquid intersects at one point. After passing through the thread passage 7,
It is attracted by the ejected liquid and sent downward. 9 is an O-ring.

FIG. 3 is a schematic diagram showing an embodiment in which the apparatus of the present invention is applied to a high-speed spinning, drawing and collecting method.

In the figure, a yarn Y spun from a spinneret 10 is stretched by a yarn suction device 11 while being oriented.

The yarn is taken up and then discharged together with the pressurized liquid from the yarn suction device. Subsequently, the fluid is collected in the collection section 12 and accumulated in the collection section in the form of a rod, and the fluid is discharged from the side wall and bottom wall of the collection section to separate the threads.

According to the device of the present invention, since the yarn is suctioned with an incompressible fluid (liquid), the noise at the fluid ejecting portion of the yarn suction device is incomparably smaller than when air is used. When water is used as the fluid, for example, it has a viscous force 50 times that of air and a kinetic energy about 100 times, and the suction energy is large, resulting in low running costs.

Furthermore, since the liquid ejection part is formed by a plurality of small holes, it is easy to reduce the ejection area. That is, even if high-pressure liquid is used, the flow rate can be reduced. Furthermore, since the small holes can be made to any desired size, a constant flow rate can be obtained and there is no difference between the weights. Furthermore, since the ejected liquid is in the form of a lump rather than a thin film, the accompanying airflow flows out without breaking the ejected fluid, so there is no possibility of inhalation errors caused by the accompanying airflow mixed into the suction device along with the threads. . Therefore, yarn can be sucked at high speed with low cost and low noise, and high quality yarn can be manufactured.

Example 1 In the yarn suction device shown in Fig. 2, a small hole diameter of 0.4 m,
It was formed with four holes.

Table 1 shows the relationship between yarn speed and tension at liquid pressures of 200 to /crrr'G.

Table 1 Note fl) Flow rate: 4.5 t/mLn (2) Thread: 150D, 30F polyester yarn As can be seen from Table 1, a large tension can be generated with a small flow rate.

Example 2 The following procedure was carried out using the yarn suction device shown in FIG. 2 and the method shown in FIG. 3.

50H of polyester with a discharge rate of 130 f//mLn
It was spun from the spindle of The fluid pressure of the yarn suction device is 200al
i, small hole φ0.4-4 hole, flow rate 4.5 LhnLn
The distance between the cap and the yarn suction device is 1000 square meters. The yarn obtained in this case is as follows.

Distance between deposited metal and thread suction device: 1000m + Fineness: 147
D Strong Crab 412f Strength: 2. y 6 yiti Elongation: 22゜2chi Boiling yield: 0.99 Spinning speed near 930 Awabu ni 9

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional yarn suction device, FIG. 2 is a cross-sectional view of an apparatus for implementing the present invention, and FIG. 3 is an example of a high-speed spinning and drawing method using the device of the present invention. It is a model side view. 1: Yarn suction tube body 2: Liquid introduction tube 3: Yarn suction tube 4: Circular gap 5: Fluid passage 6: Pressure chamber 7: Yarn path 8: Small hole 9: 0 ring 10: Spinning machine 11: Yarn suction Equipment 12: Collection Department Y: Patent Attorney for Yarn Materials Shozo Makishima 1 Figure 1 Figure 2 Figure 3 431

Claims (1)

[Claims] A yarn suction device that jets out high-pressure liquid and suctions a yarn object according to the viscous resistance of the jetted fluid, characterized in that the jetting portion of the fluid is formed by a plurality of small holes.