JPS6040534B2 - Yarn fluid treatment device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a yarn fluid treatment device.

More specifically, the present invention relates to a yarn fluid treatment device capable of imparting high cross-height to filament yarns with a small amount of pressurized fluid consumption. When a filament yarn is run under a predetermined tension while jetting pressurized fluid into a yarn processing area where the yarn path is surrounded by walls and closed at the front and back, the filament yarn is East-centeredness is given.

Therefore, this yarn fluid treatment device has come to be widely used in the industry as an efficient means to replace the means for imparting convergence by twisting. However, since the above-mentioned yarn fluid processing device consumes a large amount of pressurized fluid (compressed air), a major problem is how to impart high entanglement with as little pressurized fluid consumption as possible. 1st
The figure shows a cross section of a typical conventional yarn fluid treatment device.
is configured to open □.

However, in this device, when the compressed air injected from the compressed air injection hole 2 collides with the inner wall surface of the yarn processing area 1, since the inner wall surface is a curved surface, the amounts R and L of the compressed air divided to the left and right become unbalanced, and the yarn Rotation around the center of the ball is applied to generate false twisting. Therefore, there is a problem that entanglement is not efficiently imparted to the yarn considering the amount of compressed air consumed. In order to solve the above-mentioned problems, a yarn fluid treatment device as shown in FIG. 2 was proposed. In this device, the yarn processing area 1 has a substantially semicircular cross section, and the impact surface of the jet from the compressed air injection hole 2 is formed in a plane perpendicular to the axis of the compressed air injection hole. As a result, the air jets injected from the compressed air injection hole 2 are almost balanced after colliding with the inner surface of the yarn processing area 1, so the problem of false twisting has been solved, but the yarn processing area 1 is semicircular. Because it is a cross-section, the opening movement of the threads, which is a prerequisite for interlacing formation, is restricted, and it has been found that the shokku is not yet fully utilized for interlacing. SUMMARY OF THE INVENTION An object of the present invention is to provide a yarn fluid treatment device that solves the problems of the conventional devices as described above and can provide a high degree of entanglement with a small amount of pressurized fluid consumption.

A yarn fluid treatment device of the present invention that achieves the above object has a peripheral surface surrounding an axis, an entrance and exit for the yarn is provided in the axial direction, and a pressurized fluid injection hole is closed in the peripheral surface. In the yarn fluid treatment device, a cross section of the circumferential surface perpendicular to the yarn path direction is formed from an arcuate surface exceeding a semicircle and a plane that connects both ends of the arcuate surface directly or through another surface. is,
The injection hole for the pressurized fluid is arranged so as to inject the pressurized fluid toward the plane, and the hole diameter of the fluid injection hole is d, the diameter of the circumferential surface is D, and the length of the plane is Let's see. , when the length of the perpendicular line drawn from the center of the circular arc to the plane is 2, then 2 is d/2 or more, and 2 is D/10 or more. It is something.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically explained below using embodiments shown in the drawings.

FIG. 3 shows a basic example of the internal structure of the yarn fluid treatment device of the present invention.

In FIG. 3, 1 is a yarn processing area, and 2 is a pressurized fluid injection hole.

The yarn processing area 1 forms a yarn path that penetrates in the front and back directions of the paper, and its inner wall surface is formed of a circumferential surface 101 and a flat surface 102. The circumferential surface 101 has an arc of a semicircle or more in a cross section perpendicular to the yarn path direction,
On the other hand, the plane 102 is on the side facing the injection hole 2 and is placed in a relationship substantially orthogonal to the axis of the injection hole 2. Further, the length of the plane 102 in a cross section perpendicular to the yarn path direction is set to be smaller than the diameter D of the circumferential surface 101. The lower limit of the length of the plane 102 in a cross section perpendicular to the yarn path direction is about 1/2 of the diameter d of the injection hole. In other words, d/
2 or more. In addition, the upper limit of the length is the length where when a perpendicular line is drawn from the center of the arc to the plane and the length of the perpendicular line is 2, 2 is equivalent to D no 10 or more. shall be. According to the fluid processing device configured as described above, the pressurized fluid that collides with the plane 102 of the yarn processing area 1 from the injection hole 2 is separated into equal amounts R and L on the left and right sides because the collision surface is a perpendicular plane. Therefore, no false twist is applied to the yarn. Moreover, since the yarn processing area 1 has a cross-sectional shape close to a circle exceeding a semicircle, when the yarn is processed by the pressurized fluid, it is difficult to swell into a cone shape (paper bell shape) within the yarn processing area 1. The weaving motion is no longer constrained, and therefore efficient interlacing occurs based on the unconstrained twilling motion. FIG. 4 is a cross-sectional view showing an example of a yarn fluid treatment device incorporating the basic structure of the present invention shown in FIG. 3, and FIG. 5 is a perspective view showing both parts of the device separated. be.

In FIGS. 4 and 5, the device is composed of a pair of left and right housing members 3 and 4 facing each other,
Both housing members 3 and 4 are fixed together with bolts 5.

One housing member 4 is provided with an injection hole 2, and the other housing member 3 is provided with a thread treatment area 1. A pressurized fluid conductor 2' that communicates with the injection hole 2 is provided on the circumferential surface 101 side of the yarn processing area 1, and its rut line is coaxial with the mariline of the injection hole 2, and the rut line is coaxial with the mariline of the injection hole 2, and It is substantially orthogonal to the plane 102 located on the side. The housing member 3 further has a thread guide slit 6 vertically passing through it along its longitudinal direction on the circumferential surface 101 side of the thread processing area 1, and this thread guide slit 6 also allows the pressurized fluid conductor 2' to pass through the housing member 3. It penetrates to include the axis. A second thread guiding slit 7, which is connected to the outside, is further connected to the rear end of the thread guiding slit 6. In the above device, the yarn guide slit 6 for threading is arranged parallel to the injection direction of the injection hole 2 to prevent the yarn from flying out from inside the yarn processing area 1 due to the jet flow from the injection hole 2. It is something to do.

However, this yarn guiding slit 6 has a minimum gap necessary and sufficient for threading, and only the part corresponding to the injection hole 2 is configured as a pressurized fluid conductor 2' with a wide opening. Dissipation of the pressurized fluid from the slit 6 is small, and in addition to the effect of the basic configuration of the yarn processing area described above, the pressurized fluid utilization rate is increased. 6 and 7 show a portion of the housing member of an apparatus according to another embodiment of the invention.

It is extremely difficult in terms of processing technology to directly process the yarn processing area 1, which is composed of the circumferential surface 101 and the flat surface 102, into a housing member. This embodiment solves the problem in processing technology, and as shown in the figure, after drilling a circular cross-sectional hole in the housing member 3, a part of the side surface of the circular cross-sectional hole is removed. The circumferential surface 101 of the thread processing area 1 is formed by grinding until the surface 102 is ground, and then the flat block 3a forming the flat surface 102 is assembled to the portion removed by the grinding. With such a configuration, processing of the yarn processing area 1 can be performed extremely easily. FIG. 8 shows still another embodiment of the present invention.

In this embodiment, a circumferential surface 101 which is the basic configuration of the present invention
A yarn processing area 1 consisting of a flat surface 102 and an injection hole 2 that closes to the yarn processing area 1 are incorporated into one housing 30.

6 is a thread guiding slit for threading.

In the above embodiment as well, the portion of the plane 102 can be formed into another flat block 3a if necessary. FIG. 9 shows still another embodiment of the present invention, which is based on the basic device shown in FIG. 8 and has been improved in terms of ease of processing.

As shown in the figure, the yarn processing area 1 is constituted by a combination of two recesses machined in two housing members 30b and 30c, and has a circumferential surface 101 which is a basic element in the yarn processing area of the present invention. and form a plane 102. A housing section 40 is provided with a pressurized fluid introduction path 8, and is fixed together with the housing members 30b and 30c by bolts 5.

FIG. 10 shows still another embodiment of the present invention,
This is a modification of the device shown in FIG.

In this embodiment, in addition to the circumferential surface 101 and the flat surface 102, the inner wall surface constituting the yarn processing area 1 includes the flat surface 102.
Another plane 10 on which the bales are applied from the side so as to be almost orthogonal to
I am trying to set up 3. By bringing the plane 103 into contact with the plane 102 perpendicularly from the side, the threads interlocking in parallel from side to side on the plane 102 are caught in the gap created between the joint surfaces of the two housing members 30b and 30c. It is possible to prevent this from occurring. In the above embodiment, the plane 103 is substantially perpendicular to the plane 102 from the side, but in order to prevent the yarn from getting caught in the gap, the angle formed on the yarn processing area side is made to be an obtuse angle. There is no problem in doing so. In addition, in the embodiment shown in FIGS. 9 and 10, the inner wall surface 10 of the yarn processing area 1
1, 102, 103, the housing member 30b
, 30c are provided so that they can be separated, so when these are separated, the inner wall surfaces can be treated as the outer surfaces of 30b and 30c.

Therefore, it has the advantage that processing, surface finishing, inspection, etc. can be performed easily. According to the above-described yarn fluid processing device according to the present invention, the pressurized fluid that collides with the plane 102 of the yarn processing area 1 from the injection hole 2 as described above is equally divided to the left and right, so that it is not processed in the yarn processing area. No false twist is applied to the yarn.

Moreover, since the yarn processing area 1 has a circumferential surface 101 that exceeds a semicircle in cross section in the yarn path direction, it has a shape close to a circle, so that the yarn is not swollen into a cone shape due to fluid treatment. When performing an open twill movement, the movement is no longer restricted by the inner wall surface. Therefore, due to the unrestricted interlocking of the threads, the threads are efficiently entangled even with a small consumption of pressurized fluid. Example 1 A polyethylene terephthalate processed yarn of 15% D-48 was treated with pressurized fluid using the conventional yarn fluid treatment device shown in FIGS. 1 and 2 and the yarn fluid treatment device according to the present invention shown in FIG. 4, respectively. Entanglement treatment was performed using compressed air, and the degree of entanglement (CF value) after the treatment was measured.

In the apparatus of the present invention shown in FIG. 4, the diameter D of the yarn processing area is set to 2.4, the diameter d of the fluid injection hole is set to 1.2, and the 2 almost D/5
And so. The feed rate during processing is the same for each device.
The relaxation rate was set to 0. Further, the CF value was measured using an automatic entanglement tester manufactured by Rossield. As shown in FIG. 11, the results are curve 1 for the device of the present invention in FIG. 4, curve 0 for the conventional device in FIG. 1, and curve m for the conventional device in FIG. Therefore, it can be seen that when processing with the apparatus of the present invention, a high degree of intersection (CF value) can be obtained even though the amount of compressed air is small. Example 2 A polyethylene terephthalate processed yarn of 7 mark-3 matrix was processed using the yarn fluid treatment apparatus according to the present invention shown in FIG. , pressure 2
The entangling process was performed at 80 h/min using k9/ground (G) compressed air as pressurized fluid, and the degree of entanglement (CF value) after the process.
was measured.

In addition, the diameter D of the thread processing area was set to 2.4 mm, and the diameter d of the fluid injection hole was set to 1.2 mm. As shown in Fig. 12, the results showed that the degree of entanglement was higher than d/2 in the final stage, and higher than D/10 in the second stage.

Example 3 FIG. 13 shows the results of measurements made under the same conditions as Example 2, except that the pressure of compressed air was 3k9/ground (G).

As in Example 2, the degree of entanglement showed high values, with d/2 or higher for first and second, and D/10 or higher for second. Example 4 FIG. 14 shows the results of measurement under the same conditions as in Example 1, except that the diameter D of the yarn processing area was set to the 2.8 side and the diameter d of the fluid injection hole was set to the 1.2 side.

As in Examples 2 and 3, the degree of entanglement is d/2 or more,
〆2 showed a high value at D/10 or higher.

[Brief explanation of drawings]

FIGS. 1 and 2 are cross-sectional views of essential parts of a conventional device, respectively. Fig. 3 is a cross-sectional view of the main parts of the device of the present invention, Fig. 4 is a cross-sectional view of the device equipped with the rhombus section taken along the line W-W in Fig. 5, and Fig. FIG. 6 is a perspective view of main components according to another embodiment of the present invention, FIG. 7 is a cross-sectional view of the skin in FIG. 6, and FIGS. 8 to 10 are respectively FIG. 11, which is a cross-sectional view showing still another embodiment of the device of the present invention, is a relationship diagram showing the relationship between the CF value and the compressed air consumption amount. FIG. 12, FIG. 13, and FIG. 14 are relationship diagrams between the plane length of the yarn processing area (Part 2) and the degree of entanglement. 1... Thread processing area, 101... Circumferential surface, 102... Plane, 2... Injection hole, 3, 4,
30, 30b, 30c...Housing member, 6
... Thread guiding slit. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14

Claims (1)

[Scope of Claims] 1. A yarn fluid processing device having a circumferential surface surrounding an axis, an inlet/outlet for the yarn being provided in the axial direction, and a pressurized fluid injection hole opened in the circumferential surface, A cross section of the circumferential surface perpendicular to the yarn path direction is formed of an arcuate surface exceeding a semicircle and a plane connecting both ends of the arcuate surface directly or through another surface, and the pressurized fluid is ejected. A hole is opened in the arcuate surface in a relationship to inject pressurized fluid toward the plane, and the hole diameter of the fluid injection hole is d, the diameter of the circumferential surface is D, the length of the plane is l_1, and the diameter of the arc is d. If the length of a perpendicular line drawn from the center to the plane is l_2, then l_
1 is d/2 or more, and l_2 is D/10 or more. 2. The yarn fluid treatment device according to claim 1, wherein a yarn threading slit is provided on a peripheral surface other than the plane.