JPS595690B2 - Device to bulk up yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for bulking yarn by exposing it to the agitation action of a fluid.

BACKGROUND ART It is a well-known technique to increase the bulk of a yarn by creating loops or entanglements in the turbulent region of fluid, and many methods and devices for this purpose have been proposed.

A typical device is, for example, a cylindrical device through which thread and fluid pass simultaneously.

Generally, the thread enters the housing from one end of the device through a centrally located needle-like threader, and the pressurized fluid enters the housing at right angles to the housing through an inlet approximately centered in the housing. It enters the housing, moves forward while wrapping the threading portion from all sides, and reaches the fluid disturbance chamber.

At the outlet end of the housing there is a thread treatment section through which the thread and fluid passes to treat the ejected thread with the fluid and generate a large number of loops.

Such conventional devices have the disadvantage that the speed at which a large number of loops are generated and the bulk is increased is too low for the devices to be adopted on an industrial scale.

Conventionally, as a device to compensate for this drawback, for example, a device that makes the threading part and the fluid disturbance chamber eccentric, or a device that makes the threading part eccentric (one dollar)
Devices have been proposed that include a rim and a restricted fluid passage at the rim.

However, with the former device that eccentrically sets the threading part and the fluid disturbance chamber, the adjustment of the degree of eccentricity is extremely delicate, and the range of optimal positions for the positional relationship between the threading part and the fluid disturbance chamber is narrow, and it is difficult to assemble them at the optimal position. The drawback is that it is difficult to adjust and requires a long time to adjust.

In addition, the latter device in which a restricted fluid passage is provided at the edge of the needle has the disadvantage that only the side of the needle tip where the restricted fluid passage is provided is subject to significant wear due to thread processing.

The present invention aims to solve all of these drawbacks of conventional devices.

That is, the first object of the present invention is to provide a bulking device that can generate loops in a yarn and impart bulkiness to it at an extremely high speed and with extremely high fluid utilization efficiency than conventional devices. It is in.

A second object of the present invention is to provide a device in which the assembly work can be completed extremely easily when the parts are assembled to form a completed device.

Furthermore, a third object of the present invention is to provide a highly durable device that, even if the tip of the threading section is worn out through use, the threading section can be rotated to renew the threading section one after another. It's about doing.

This objective is achieved by employing a device consisting of first-order elements.

That is, the yarn processing portion has an outlet hole for the yarn and the fluid and a tapered portion tapered toward the outlet hole, the tip is located in a space surrounded by the taper portion, and the distal end extends to one end of the housing. It consists of three parts: a threading part having a hole drilled from the tip to the end, and a housing that encloses the thread processing part and the threading part and has a fluid inlet on the side surface, and the tapered part and a fluid disturbance chamber and a housing formed at the tip of the threading portion.

A wall formed with unevenly distributed at least one small hole connecting compartments of a fluid-filled chamber formed on a side surface of the threading portion is provided between the housing and the threading portion without contacting the threading portion. The object of the present invention can be achieved by providing a device that has the following features.

Although the apparatus of the present invention will be described with reference to the accompanying drawings, the apparatus of the present invention is not limited thereto.

FIG. 1 is a longitudinal sectional view of the device of the invention. In FIG. 1, the yarn handling portion 11 is enclosed at one end of the housing 12, and includes an outlet hole 13 for yarn and fluid and an outlet hole 13 for the yarn and fluid.
It has a tapered portion 14 that tapers toward the end.

The threading portion 15 is contained in the housing 12, has a distal end 16 located within a space surrounded by the tapered portion 14, has a distal end extending to one end of the housing 12, and is perforated from the distal end 16 to the distal end 17. It has a hole 18, with a yarn outlet 19 near the tip 16 and a yarn entrance 20 near the end 17.

21 and 22 are the thread processing section 11 and the threading section 15, respectively.
It is a set screw for fixing.

The fluid passes from the fluid volume 23 through a fluid-filled chamber 24 formed by the sides of the threading portion 12 and the threading portion 15, and then into a fluid turbulence chamber 28 formed by the tapered portion 14 and the tip 16 of the threading portion 15. Wall 27 provided in housing 12
After disturbing the thread that is guided through both the J-tL 25 formed in , are discharged from the device through the thread and fluid outlet hole 13.

The method of supplying fluid from the fluid-filled chamber 24 to the fluid disturbance chamber 28 can be better understood by referring to a cross-sectional view taken along line A--A in FIG. 1, that is, FIG. 2.

Fluid is injected from the fluid-filled chamber 24 toward the fluid disturbance chamber 28 through both the small hole 25 in the wall 2T provided in the housing 12 and the small gap 26 between the wall 27 and the threading portion 15.

The fluid injected toward the fluid agitation chamber 28 spreads the yarn coming out of the threading section 15 from the hole 18 through the yarn outlet 19 into individual single yarns by the agitation action of the fluid, and generates random torque or vibration. is applied to convey the thread out of the device through the thread and fluid exit hole 13.

At this time, the thread injects fluid toward the fluid disturbance chamber 28 due to the action of the fluid in the fluid disturbance chamber.

J-JL25 is bent extremely to the side where it is present, and the fibers are opened.
Moreover, torque and vibration are generated in the thread.

Therefore, the end 16 of the threading portion 15 on the side where the thread is extremely bent is likely to be worn out due to friction with the thread.

Next, the present invention will be explained in detail with reference to FIG.

In the apparatus of the present invention, as shown in the drawings, J-)
L 25 balances the amount of fluid jetted both from one side of the threading part 15 and from the small gap 26 between the threading part 15 and the wall 27 in the lower part of the fluid disturbance chamber 28, and the thread Machining speed can be significantly increased.

In addition, the bias of the injection of fluid into the fluid disturbance chamber 28 is caused by lJ'
- Since it is regulated by the position where fL25 is drilled,
Threading section 15 and thread processing section 11. In particular, the fluid disturbance chamber 28
Their optimum positions can be easily set without having to make delicate adjustments to the positional relationship.

Furthermore, as mentioned above, the end 16 of the threading section 15 is prone to wear on the side of the small hole 25, but if the wear progresses to an extreme degree and it becomes unusable, loosen the stopper 22 and rotate the threading section 15 at an angle of 300 to 45 degrees. If you rotate it, the threading part 15 that has not yet worn out will be on the dfL 25 side where fluid will spout out.
Since the leading edge of the device is updated, the device of the present invention can be used again.

The length of the threading portion 15 and the diameter of the hole 18 drilled in the center are not particularly limited, and the outer diameter of the tip 16 is preferably as small as possible, and the tip portion is tapered as shown in Fig. 1. It could be something.

Straight is preferable.

The apex angle of the tapered portion 14 of the yarn processing portion 11 is preferably 3
0° to 90°, and the yarn and fluid outlet holes 13 of the yarn processing portion 11 are preferably cylindrical or open-ended, and in the case of open-ended, the apex angle is preferably 0° to 30°.
It is.

Although the size of the housing 12 and the diameter of the fluid inlet 23 are not particularly limited, dimensions with which the pressure drop at the fluid inlet 23 is small are preferred.

Also, the shape of the small hole 25 formed in the wall 2γ. Although the number of small holes 25 is not particularly limited, the positions where the small holes 25 are formed need to be unevenly distributed on one side with respect to the threading portion 15.

, J4L25, the maximum angle formed by the line segment connecting the center of the /to hole 25 (the center of the cross section) and the central axis of the threading portion 15 at the exit surface of each wall is 120°.
It needs to be within 9o0, preferably within 9o0.

In Figure 3, there are three 1J4L 25 (how many 25a are these)
, 25b, 25c) of the present device of the present invention.
Although a cross section is shown in FIG.
Let θ be the angle formed by the straight lines X and Y connecting each of ′c, then this θ should be within 120°, preferably within 90°.

As a result of detailed study by the present inventors, it was found that if the exits of 1/2 inch are unevenly distributed in a range where θ is wider than 1200, the amount of loops generated is small, and the amount of loops generated is uneven in the length direction of the yarn. Easy to occur.

In addition, since the loop entanglement strength is low and stretching the thread reduces the number of loops or loops, θ must be within 120°.

By the way, if the exits of the JfL are unevenly distributed within the range of 900 mm, loops will occur uniformly in the length direction of the yarn, and the shape of the loops, especially those with a small size distribution, will be possible.
It has the feature that yarn with a desired loop size distribution can be obtained by setting conditions.

Also, the cross-sectional area of /J4L25 formed in the wall 27 (if there are multiple of them, the sum of their cross-sectional areas) is 0.5 to 9 of the smallest cross-sectional area of the thread and fluid outlet hole 13.
Preferably, it is twice as large.

On the other hand, the cross-sectional area of the small gap 26 between the wall 27 and the threading portion 150 is 0.0% of the cross-sectional area of the lJ dimension L25 formed on the wall 27.
It is preferable that it is 3 to 3 times.

The apparatus of the present invention can be used to add loops to a spun yarn made of filaments or stable made of any natural fiber, regenerated fiber, semi-synthetic fiber, or synthetic fiber to make it bulky.

Furthermore, the device of the present invention can be used regardless of the cross-sectional shape of the single fiber or the fineness of the single fiber, and can be used without being limited to the fineness of the filament yarn or the count of the spun yarn.

The fluid used in the apparatus of the present invention is generally air or saturated steam or superheated steam, but is not limited thereto.

When using the device of the invention, the overfeed rate for overfeeding yarn into the threading section 15 depends on the characteristics of the yarn being processed and the quality of the product obtained.

When bulkiness is imparted by combining two or more types of yarns, processing can also be carried out by supplying an excess of the remaining number of yarns to an arbitrary number of yarns.

The morphology and various properties of the yarn produced by the apparatus of the invention also depend on the amount and speed of the fluid, the speed at which the yarn is processed, the type of fiber, and the properties, but the dimensions of the various parts of the apparatus are of paramount importance. .

Among them, the cross-sectional area of the small hole 25 formed in the wall, the small gap between the wall and the threading part, the outer diameter of the tip of the threading part, the apex angle and size of the tapered part, and the exit of the thread and fluid. The cross-sectional area of the pores is an important factor.

The present invention will be described in detail below with reference to Examples.

Example 1 The outer diameter of the tip of the threading part is 5rrrInφ, the diameter of the tip of the threading hole in the threading part is 0.8mφ, the diameter of the tip of the tapered part is 1.8ranφ, and the apex angle of the tapered part is 6o0°. The opening angle of the fluid outlet hole is 10°, the diameter of the small hole that supplies the fluid to the disturbance chamber is 3.5 rranφ, and the inner diameter of the housing forming the wall is 6Mφ. A polyester filament yarn of 150 denier and 60 filaments was processed using the same equipment to produce a bulky yarn with a large number of loops.

At this time, compressed air of 5.0 to 7/cd-G was used as the fluid, and water was sufficiently applied to the filament yarn for 350 m.
The filament yarn was fed into the device at a speed of 270 m/min and removed from the device at a speed of 270 m/min.

In this way, we continued to manufacture bulky filament yarn, and after about 1.5 months, the tip of the threaded part.
Supply fluid to the agitation chamber.

The side where the J-TL was punched was worn out, and the filament got caught in the scratches, making it impossible to process, so the threading part was rotated 40 degrees to avoid using the worn part, and production was restarted.

Repeat this. It was possible to manufacture the product using the same device for 13.5 months until the tip of the threading part wore out completely and became unusable.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the device of the present invention, and FIG.
It is an AA sectional view of the figure. FIG. 3 is a sectional view taken along the line A-A of the device according to the present invention in which three holes are present. 11... Thread processing part, 12... Housing, 15...
... Threading portion, 24... Fluid-filled chamber, 25... Small hole, 26... Slit, 27... Wall, 28... Fluid stirring chamber.

Claims (1)

[Claims] 1. A yarn processing portion having an exit hole for the yarn and fluid and a tapered portion tapering toward the exit hole, the tip thereof being located in a space surrounded by the tapered portion, and the distal end extending to one end of the housing. It consists of three parts: a threading part with a hole drilled from the tip to the end, and a housing that encloses the thread processing part and the threading part and has a fluid inlet on the side surface, and the tapered part and the housing A wall formed by unevenly distributed at least one "/" dimension connecting both chambers, a fluid disturbance chamber formed at the tip of the threading part and a fluid-filled chamber formed by the housing and the side surface of the threading part. A device for increasing the bulk of a thread, characterized in that it is provided between a housing and a threading section without contacting the threading section.