JPS5932570B2 - Yarn bulking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for increasing the bulk of a yarn, which is an aggregate of a large number of single yarns, by exposing it to the agitation effect of a fluid.

It is a well-known technology to create loops and entanglements in a single yarn through a disturbance action in a fluid turbulence zone, thereby increasing the bulk of the yarn as a whole. There is.

A typical device is, for example, the device described in Japanese Patent Publication No. 38-2828.

In this device, the thread enters the housing member through a pipe-like threading member extending inwardly into the housing member from one end of the device, and the pressurized fluid enters the housing member through a pipe-like threading member extending inwardly into the housing member, and the pressurized fluid It enters the housing member through the inlet and advances while surrounding the threading member until it reaches the fluid disturbance zone.

The outlet end of the housing member is provided with an orifice member having an outlet guide hole through which the entangled thread and the fluid in the disturbance zone are ejected together.

However, this device is not effective for bulking yarn industrially because its bulking capacity is too low.

Therefore, as a device for increasing the bulk of the yarn at high speed by generating a large number of entanglements in the yarn, for example, as described in Japanese Patent Publication No. 44-6158, there is a device that uses the center of the threading member. , a device in which the fluid disturbance chamber is eccentrically arranged,
As described in U.S. Pat. No. 3,545,057, a device has been proposed in which the threading member has an edge to provide a restricted fluid passage at the edge.

However, in the former device, the degree of eccentricity of the centers of the threading member and the fluid disturbance chamber has a very subtle effect on the bulkiness of the obtained bulky yarn, so both must be adjusted to optimal positions. .

However, it takes considerable skill to adjust and assemble the threading member and the fluid agitation chamber to optimal positions, and it is also quite difficult and has the disadvantage that it requires a long time to adjust them.

In addition, when using many of these devices to obtain a large amount of bulky yarn, the bulkiness characteristics of the yarn obtained from each device must be the same. It is necessary to adjust the eccentricity of the yarn in accordance with the bulk characteristics of the yarn, but this adjustment is extremely difficult with the above device.

Furthermore, although the latter device was able to increase the speed of bulking the yarn compared to other devices, the part that forms the uneven flow is located inward from the tip of the pipe-like object (needle), so the uneven flow is The effect may not be sufficient.

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 yarn bulking device that can generate loops in a yarn and impart bulkiness to the yarn at an extremely high speed and with extremely high fluid utilization efficiency compared to conventional devices. There is something to do.

A second object of the present invention is to improve the drawbacks of yarn bulking devices which are directly prior art to the present invention.

In other words, this prior art refers to a portion in which the gap between the outer surface of the threading member and the inner surface of the housing member includes the position of the fluid introduction path provided in the housing member in the constituent elements of the present invention described below. means a yarn bulking device that lacks the requirement of an expanded fluid-filled chamber consisting of an annular space that is larger than the gap in other parts,
This prior art has four parts on the outer periphery of the needle tip, but the position of the recess and the fluid introduction position into the housing member are in a specific relationship, that is, the recess is located on the side where the fluid introduction position is located. Otherwise, there is a drawback that good bulking may not be imparted to the yarn, and the present invention aims to solve this drawback of the prior art.

The present invention for achieving the above-mentioned objects consists of the following configuration.

That is, the present invention provides (A) a threading member configured to pass a thread through a through hole of a pipe-like object from an inlet at one end to an outlet at the other end; (B) a threading member facing the outlet of the threading member; and (C) a thread processing member having a recess located with a gap between the thread passing member and the outlet, a thread communicating with the recess, and a fluid outlet hole, and (C) the thread passing member and the thread processing member. In a thread bulking device including three members, a housing member to which a member is attached and a fluid introduction path is provided, the outer periphery of the threading member on the exit side is in the shape of a tapered truncated cone; A part of the outer periphery is unevenly provided with recesses that are recessed from the outer peripheral surface on the exit side, and the recess of the thread processing member has a tapered part toward the exit hole for the thread and fluid, and An annular fluid-filled chamber is provided in the member in which the gap between the outer surface and the inner surface of the housing member includes the position of the fluid introduction path provided in the housing member, and is larger than the gap in other parts, A gap between a gap Al in a portion including the position of the fluid introduction path and a gap As between the threading member and the housing member between the fluid-filled chamber and the conical space between the threading member and the thread processing member. Ratio Al/As is 1.2 to 3.0
It consists of a yarn bulking device.

The apparatus of the present invention will be specifically explained with reference to the attached drawings.

FIG. 1 is a longitudinal cross-sectional view of a typical device according to the present invention, and FIG. 2 is a cross-sectional view taken along the line -■ in FIG.

The device of the invention basically consists of a cylindrical housing member 2
It consists of three members: 1, a threading member (or needle) 22 built into the housing member 21, and a thread processing member 23.

The housing member 21 includes a threading member 22 and a thread processing member 2.
The system passing member 22 is a kind of pipe-like member, and has a length B.
There is a through hole 25 passing through the central axis C portion along the direction, and the structure is such that the thread that is intended for bulk processing passes through the hole 25.

Thus, the threading member 22 has a thread inlet 24 at one end and a thread outlet 26 at the other end.

Although the diameter of the through hole 25 is not particularly limited, it is preferable that the diameter of the outlet 26 is smaller than the diameter of the other portion.

Further, the outer circumferential portion of the threading member 22 on the thread outlet 26 side, and the tip portion of the member 22 (hereinafter referred to as the outer circumference on the outlet side, and a symbol 28 is attached to this) is a portion where the thread passes from the inlet 24 to the outlet 26. Preferably, the surface is tapered in the opposite direction.

Recesses 27 are provided unevenly on the outer periphery 28 on the outlet side.

The recess 27 typically has a semicircular cross section as shown in FIG. 2, and extends unevenly over a portion of the outer periphery 28 of the threading member 22 on the outlet side.

Figure 3 shows an enlarged longitudinal sectional view showing the aspect, and exit 2.
FIG. 4 shows a front view of the threading member 22 viewed from 6 toward the entrance 24.

In addition, the concave portion 27 as shown in FIG. 5 and FIG. 6, FIG. 7 and FIG. 8, and FIG. 9 and FIG. It may be provided unevenly in some parts.

To be more specific, FIGS. 5 and 6 show that the semicircular recess 27 starts from the thick part of the base on the outlet side outer periphery 28 and ends at approximately the center of the outlet side outer periphery 28. The figure and FIG. 8 show an example in which a V-shaped recess 27 penetrates from the thick part at the root of the outer periphery 28 on the outlet side to the narrow part at the tip.
In Figures 9 and 10, a semicircular recess 27 appears.
The one provided approximately in the center of the side outer periphery 28 along the same circumferential direction is shown.

Therefore, in the present invention, the outlet side outer circumference 2 of the threading member 22
8 is “provided with a recessed portion” means that this outlet side outer periphery 28
This means that a notch such as a semicircular groove, a U-shaped groove, or a V-shaped groove is provided in the outer circumference 28.
This means that it can be provided in any part of the throat, in any direction, in any size, and at any depth.

Therefore, for example, as a preferable example, if a part of a threading member where a tapered surface exists is referred to as a tapered part, a groove may pass through the tapered part from a thick part to a thin part, or a groove may pass through only a thick part. Recesses 27 of arbitrary shapes, such as those with open grooves, those with grooves open only in the narrow part, or those without open ends of the groove in both places.
This means that it may be provided on the tapered surface.

However, in the device of the present invention, since the purpose is to cause a flow of a specific fluid in the fluid disturbance chamber described later, it is important to note that a recessed portion must not be provided over the entire outer circumference of the threading member on the exit side. Should.

For example, if the exit side outer periphery has multiple recesses, the outermost ends (two locations) of the recesses and the center point (the thread exit hole It is necessary that the angle formed by the line segment connecting the central axis C) is within 20°, preferably within 90°.

This means that in the present invention, the recesses are provided unevenly on a part of the outer periphery on the outlet side.

This will be explained as follows using FIG. 11, which shows a projected view of the outer periphery of the threading member 22 on the outlet side in the device of the present invention in which a plurality of recesses 27 are provided.

Now, let us assume that there are two recesses 27, and there are two recesses 27a.
. If we connect them at Y and let the angle between them be θ, then
This θ is set within 120°, preferably within 90°.

Also, when the two recesses 27a and 27b are in contact, the outer edges 27'a and 2γ'b corresponding to 27a and 27b and the central axis C of the threading member are similar to the above.
The above range is defined as the angle θ formed by the straight lines X and Y obtained by connecting the lines X and Y.

When there is only one recess 27 as shown in FIG. 10, the angle θ is determined using the outer edge of the recess 27 as described above.

The reason for specifying θ as described above is that if the concave portions are unevenly distributed in a range where θ is wider than 120°, the number of loops generated in single yarns will be small, and the number of loops generated will be uneven in the length direction of the yarn. This is because the loops are easily entangled, and the loops have a low entangling strength, and when the thread is stretched, the loops disappear or the number of loops decreases.

Therefore, it is necessary to keep θ within 120°.

By unevenly distributing the positions of the four parts within a range of 90 degrees, loops are generated uniformly in the length direction of the yarn, and the shape of the loops, especially those with a small distribution of sizes, are possible, and the desired loop can be formed by setting the conditions. It has the feature that yarns with a size distribution of .

Further, in a preferred embodiment of the device of the present invention, when the outer periphery of the exit side of the threading member forms a tapered surface, the taper angle of the surface is selected in accordance with the apex angle of the fluid disturbance chamber of the thread processing member, which will be described later. It is better.

On the other hand, the threading member 220 is connected to the housing member 21 by, for example, attaching a female thread to the inlet side of the threading member 220 and fitting it to the male thread of the housing member 21. Outer peripheral surface and housing member 21
A fluid-filled chamber 3 is an annular elongated space in the gap between the inner surface of the
0 intervening.

Next is the thread handling member 23, which has a recess facing the outlet of the threading member, and this recess is preferably a tapered recess and has the same taper as the taper at the tip of the threading member. is preferable.

Further, when the threading member and the thread processing member are set in the housing member, an annular gap is formed between the outlet of the threading member and the recess of the thread processing member, and the threading member A gap is also formed between the outlet end of the yarn processing member and the bottom of the recess of the yarn processing member, and this gap becomes the fluid disturbance chamber 31.

In addition, a thread and fluid outlet hole 32 that is open for communication is provided at the bottom of the recess of the thread processing member.

The thread processing member 23 is attached to the housing member 21 by threading the threading member 2.
It is now fixed with a screw from the opposite side where 2 is fixed.

- It is preferable that the relative position of the thread processing member 22 and thread processing member 23 can be adjusted by moving at least one of them.

The fluid disturbance chamber 31 formed between the thread processing member 23 and the threading member 22 is preferably a tapered cone as shown in FIG. 1, and more preferably has an apex angle of 20° to 90°.
It is.

Further, the thread and fluid outlet holes 32 of the thread processing member 23 are preferably cylindrical and/or open-ended, and more preferably have an angle of 0° to 30°.

In addition, "cylindrical shape and tip-opening shape" here means that a tip-opening fluid outlet hole is provided following a cylindrical fluid outlet hole.

Any fluid can be introduced into the fluid-filled chamber 30 described above through a fluid introduction path 29 attached to the middle of the housing member.

Although the size of the housing member 21 and the inner diameter of the fluid introduction path 29 are not particularly limited, dimensions with which the pressure drop within the fluid introduction path is small are preferred.

Further, the inner diameter of the housing member is not particularly limited, but is larger than the outer diameter of the threading member 22.
The above-mentioned fluid-filled chamber 30 needs to be formed between the two.

In the device according to the present invention, what is more important is the shape of the fluid-filled chamber 30.

Its shape is as follows.

That is, in the device of the present invention, the fluid introduction path 29 provided in the housing member 21 is a gap between the outer surface 33 of the main body portion of the threading member 220 and the inner surface 34 of the housing member 21.
An annular space 30A in which a gap A7 in a portion including the existing position is larger than a gap Ao in other portions,
Between the space 30A and a conical space 36 that is formed between the threading member 22 and the housing member and between the outlet side outer periphery 28 and the wall surface 35 of the thread processing member 23,
It has a contraction chamber 30B which is an annular space having a gap As smaller than the space Al.

In the device of the present invention having the above structure, fluid is supplied from the fluid introduction path 29 to the uzing member 21 and the threading member 2.
The annular space 30A formed by enlarging the fluid-filled chamber 30 and the contraction chamber 3
The yarn is supplied to the fluid stirring chamber 31 through 0B, and after further disturbing the yarn coming out of the yarn outlet 26 of the threading member 21, it is discharged from the outlet hole 32 together with the yarn.

The movement of the fluid near the outer periphery on the outlet side will be described in more detail as follows.

That is, the fluid is collected from the fluid introduction path 29 into the fluid-filled chamber 30 and advances along the outer periphery of the threading member 22, but the side of the recess 27 on the outlet side outer periphery 28 of the threading member 22 is not connected to other parts. The flow rate is relatively high.

Next, the fluid passes through the clearance formed between the wall surface 35 of the conical fluid disturbance chamber 31 and the outlet side outer periphery 28 of the threading member 22, that is, the conical space 36, and is exhausted to the outside of the device through the outlet hole 32. be done.

On the other hand, when the thread is introduced from the inlet 24 of the threading member 220, the suction action of the fluid causes the thread to pass through the hole 2 of the threading member 22.
5 into the fluid agitation chamber 3 from the outlet 26 of the through hole.
1, where it merges with the fluid.

Then, the thread is opened into single threads constituting the thread by the fluid agitation action, receives random torque or vibration, passes through the outlet hole 32 together with the fluid, and is discharged out of the apparatus.

At this time, from the outlet 26 of the threading member 22 to the fluid disturbance chamber 31
The thread that is injected is bent extremely toward the side where the recess 27 of the outer periphery 28 of the exit side of the threading member 22 exists, and is spread, and strong torque and vibration are generated in the thread.

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 these, the outer diameter of the straight part of the threading member 22, the outer diameter of the tip, the apex angle of the exit side outer periphery 28 of the threading member 22 when it has a tapered surface, and the size of the recess 27 provided on the outer periphery. , the apex angle of the fluid disturbance chamber 31 of the yarn processing member 23, the inner diameter of the narrowest part of the outlet hole 32, and the gap ratio (A
The value of l/As) is an important factor, and the fineness is 30 to 300.
When processing polyester multifilament yarn or polyamide multifilament yarn for clothing (D) to make it bulky, the preferred dimensions of each part of the apparatus are, for example, as follows.

Regarding the threading member 22, the outer diameter of the straight part -5 to 20 mmφ The outer diameter of the tip part - 3 to 8 mmφ Vertical angle of the tapered surface
-30 to 80° Size of recess - 0.5 to 3.0 mmφ (in case of one semicircular groove) Vertical angle of fluid disturbance chamber with respect to yarn processing member 23 - 30 to 80° Inner diameter of narrowest part - 10~40mmφ fluid filled chamber 3
0, the gap ratio Al/As=1.2 to 3.0 Next, the present invention will be explained in detail with reference to FIG.

In the device of the present invention, as shown in FIG. 1, by providing a recess 27 on the outlet side outer periphery 28 of the threading member 22, the dynamic pressure of the fluid on one side can be made significantly higher than that on the other side. I can do it.

As a result, the thread coming out of the outlet 26 of the threading member 22 is bent extremely toward the side where the recess exists and is opened, and strong torque and vibration are generated in the thread.

In addition, since the uneven injection of the fluid into the fluid disturbance chamber 31 is regulated by the recess 27 located on the outlet side outer periphery 28 of the threading member 22, the delicate positional relationship between the threading member 22 and the thread processing member 23 may be prevented. The optimum position for both can be easily set without any adjustment.

Furthermore, since the unevenness of the injection of the fluid into the fluid disturbance chamber 31 is regulated by the recess 27 located on the outlet side outer periphery 28 of the threading member 22 closest to the fluid disturbance chamber 31, the injection of the fluid is restricted. The degree of deviation is large, and as a result, the torque and vibration generated in the thread are extremely strong.

If the enlarged annular space 30A is not present, in order to perform a better bulking process, the position of the fluid introduction path 29 and the position where the recess 27 is provided in the outlet side outer periphery 28 should be on the same side. However, in the device of the present invention, since the enlarged annular space 30A is provided, the deviation of the fluid jet can be greatly increased without being restricted by the positional relationship between the fluid introduction path 29 and the recess 27. Therefore, it can be said that the bulk characteristics of the obtained yarn are almost uniformly excellent without being particularly restricted by these positional relationships.

The apparatus of the present invention can be used to add loops to spun yarns made of filaments or stables made of any natural fibers, regenerated fibers, semi-synthetic fibers, or synthetic fibers and to bulk them up.

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, saturated steam, or superheated steam, but is not limited thereto.

When used in the device of the invention, thread is over-fed to the threading member, the rate of over-feed depending on the properties of the thread to be processed and the quality of the product obtained.

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

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a typical device of the present invention, and FIG. 2 is a cross-sectional view taken along the line -■ in FIG. FIG. 3 is a longitudinal cross-sectional view of the end of the threading member, and is a cross-sectional view showing a mode in which a typical-shaped recess is provided on the outer periphery of the threading member, and FIG. FIG. FIG. 5, FIG. 7, and FIG. 9 are drawings showing other aspects of the four parts provided on the outer periphery of the outlet side. FIG. 6, FIG. 8, and FIG. 10 are side views of each of the above figures as seen from the entrance side. FIG. 11 is a side view similar to the above when two recesses are provided on the outer periphery of the outlet side which is a tapered surface. 21...Housing member, 22...Threading member, 23...Thread processing member, 24...
...Inlet, 25...Through hole, 26...Outlet, 27...Recess, 28...Outer circumference on outlet side, 2
9... Fluid introduction path, 30... Curved fluid filling chamber, 3
1...Fluid agitation chamber, 32...Introduction hole,
Ao. Al, As...Gap.

Claims (1)

[Claims] 1 (A) A threading member configured to pass a thread through a through hole of a vibrator from an entrance at one end to an exit at the other end; (B) a threading member that faces the outlet of the threading member; A thread processing member having a recess located with a gap between the outlet and the thread and a fluid outlet hole communicating with the recess, and (C) the threading member and the thread processing member are attached. In a thread bulking device including three members, a housing member provided with a fluid introduction passage and a housing member, the outer periphery of the threading member on the exit side is in the shape of a tapered truncated cone, and a part of the outer periphery on the exit side is provided. A concave portion recessed from the outer circumferential surface on the exit side is unevenly distributed, and the concave portion of the thread processing member has a tapered part tapered toward the exit hole for the thread and fluid, and the outer surface of the thread passing member and the An annular fluid-filled chamber is provided in a portion where the gap with the inner surface of the housing member includes the position of the fluid introduction path provided in the housing member, the gap being larger than the gap in other portions,
A gap A between the threading member and the housing member between the gap Al in the portion including the position of the fluid introduction path and the conical space between the fluid-filled chamber and the threading member and the thread processing member.
A yarn bulking device characterized in that the gap ratio Al/As is 12 to 30.