JPS5932569B2 - Device to bulk up yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for increasing the bulk of 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 technique to increase the bulk of a yarn by creating loops or entanglements in a single yarn through a disturbance action in a fluid turbulence zone, and many methods and devices for this purpose have been proposed so far.

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.

An orifice member is provided at the exit I' end of the housing member and has an outlet hole through which the entangled thread and fluid are ejected together in the disturbance zone.

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 is provided with a rim to provide a restricted fluid passage at the rim.

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 a large number of devices to obtain a large amount of bulky yarn, the bulkiness characteristics of the yarn obtained from each device must be equal. It is necessary to adjust the eccentricity of the yarn in accordance with the bulk characteristics of the yarn, but this adjustment is very 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 drifted flow is located inward from the tip of the pipe-like object. In some cases, it may not be sufficient due to the drift effect.

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.

Furthermore, a second object of the present invention is to provide an apparatus in which the assembly work can be completed extremely easily when assembling each member to form a yarn bulking apparatus.

These objects of the present invention are: (B) a threading member configured to pass a thread through a through hole of a prisoner pipe-like object from an entrance at one end toward an outlet at the other end; (B) an outlet of the threading member; (C) a thread processing member having a recess located opposite to the outlet with a gap between the thread processing member and the thread outlet, and a thread and fluid outlet hole that communicates with the recess; In an apparatus for bulking a thread, which includes three members, a housing member to which a thread processing member is attached, an outer periphery of the threading member on the exit side has a tapered truncated conical shape, and a part of the outer periphery on the exit side This is achieved by providing a device in which recesses recessed from the outer circumferential surface of the outlet side are unevenly distributed, and further the recesses of the yarn processing member have a tapered part toward the exit hole for the yarn and fluid to increase the bulk of the yarn. be done.

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 present invention basically consists of a circular 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.
3 and functions to maintain both in a fixed relative position.

The threading member 22 is a kind of pipe-like member, and has a through hole 25 passing through it at the center axis C along its length, through which the thread to be bulked is passed. ing.

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.

In the outlet side outer periphery 28, recesses 2γ are unevenly provided.

The shape of the recess 2γ typically has a semicircular cross section as shown in FIG. .

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, Figures 5 and 6, Figures 7 and 8, as well as Figures 9 and 1, which are shown in the same relationship as Figures 3 and 4.
The recessed portions 2T as shown in FIG.

To be more specific, FIGS. 5 and 6 show that the semicircular recess 2γ, which starts from the thick part at the root of the outlet outer periphery 28 and ends at approximately the center of the outlet outer periphery 28, is The figure and FIG. 8 show an example in which a ■-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.
9 and 10 show a semicircular recess 21 provided along the circumferential direction at approximately the center of the outer periphery 28 on the exit side.

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 cutout such as a semicircular groove, a U-shaped groove, or a ■-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, as a preferable example, if a threading member with a tapered surface is referred to as a tapered member,
A tapered member with a groove penetrating from the thick part to the thin part, a groove or an opening only on the thick part side,
This means that any recess 21 may be provided on the tapered surface, such as one in which the groove is open only in the narrow part, or one in which there is no open end of the groove in the image part.

However, in the device of the present invention, since the device causes a flow of a specific fluid in the fluid disturbance chamber described later, the four sections should not be provided over the entire outer circumference of the threader 1 to the exit side of the member. This should be kept in mind.

For example, if the exit side outer periphery has multiple recesses, the outermost ends (two locations) of the four parts 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 120°, 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 exit side in the device of the present invention in which a plurality of recesses 21 are provided.

Now, if there are two concave portions 27, [~, 21
a, 2γb, and the outer edges of each are 27'a and 227'b, and these and the central axis C of the threading member (therefore, this is also the central axis of the outlet 26) are connected to a straight line X. If they are connected by Y and the angle they form is θ, then θ should be within 120°, preferably within 90°.

Also, when the two recesses 2γa and 27b are in contact, the outer edges 27'a and 27'b corresponding to 2γa and 27b and the central axis 26 of the threading member
The above range is defined as the angle θ formed by the straight line X and Y obtained by connecting the lines X and Y.

When there is only one recess 2γ 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 above is that if the recesses are unevenly distributed over a range wider than θ or 120°, the amount of loops generated in single yarns will be small, and the amount of loops generated will be uneven in the length direction of the yarn. This is because the loops tend to form easily, and the strength of the loops being entangled is low, and when the thread is stretched, the loops disappear or the number of loops decreases.

Therefore, θ needs to be within 120°.

By the way, if the positions of the four parts are unevenly distributed within a range of 900 degrees, loops will occur uniformly in the length direction of the yarn, and the shape of the loops, especially those with a small distribution of sizes, can be created, and the desired shape can be obtained by setting the conditions. It has the advantage of producing yarn with a distribution of loop sizes.

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's beautiful.

On the other hand, the threading member 22 inserts the thread into the housing member 21 by, for example, attaching a female thread thereto and fitting it to the male thread of the housing member 21. The passage member 22 is attached so that a fluid-filled chamber 30, which is an annular space, is interposed between the outer circumferential surface of the passage member 22 and the inner surface of the housing member 21.

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 tip of the threading member. It is preferable to have

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 recessed portion of the thread processing member, and the threading member A space is also formed between the exposed end of the yarn processing member and the bottom of the recess of the yarn processing member, and the structure is selected so that this space 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.
2 is fixed with a screw from the opposite side.

Preferably, the relative positions of the threading member 22 and the thread processing member 23 can be adjusted by moving at least one of them.

The fluid disturbance chamber 31 formed between the yarn 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 degrees to 9 degrees.
It is 0°.

Furthermore, the thread and fluid outlet holes 32 of the thread processing member 23 are preferably circular and/or open-ended, and more preferably have an apex angle of 00 to 30 degrees.

In this case, "cylindrical and open-end" means that a cylindrical fluid outlet hole is followed by an open-open fluid outlet hole.

Any fluid can be introduced into the fluid-filled chamber 30 described above through a fluid introduction pipe 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 pipe 29 are not particularly limited, dimensions that cause a small pressure drop within the fluid introduction pipe 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.
It is necessary to form the above-mentioned fluid-filled chamber 30 between the two.

In the device of the present invention having the above structure, fluid is supplied from the fluid introduction pipe 29 to the housing member 21 and the threading member 22.
The thread enters the fluid-filled chamber 30 formed during the process, is then supplied to the fluid disturbance chamber 31 through the fluid-filled chamber 30, and is further disturbed after coming out from the thread outlet 26 of the threading member 21. 32 and is discharged from the device together with the thread.

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 tube 29 into the fluid-filled chamber 30 and advances along the outer periphery of the threading member 22, or the side of the recess 27 on the outlet-side outer periphery 28 of the threading member 22 is transferred to other parts. The flow rate is higher in comparison.

Next, the fluid passes through the clearance formed between the wall of the conical fluid disturbance chamber 31 and the outlet side outer periphery 2B of the threading member 22, and is exhausted out of the apparatus through the outlet hole 32.

On the other hand, when the thread is introduced from the inlet 24 of the threading member 22, the suction action of the fluid causes the thread to pass through the through 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 injected into the thread is bent extremely toward the side where the four portions 21 of the outer periphery 28 on the exit side of the threading member 22 are present, 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 include the amount and speed of the fluid, the speed at which the yarn is processed, the type of fiber,! It depends on the vfti, and the dimensions of each part of the device are most important.

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 outlet side outer circumference 28 of the threading member 22 when it forms a tapered surface, and the size of the recess 2γ provided on the outer circumference. , and the fluid disturbance chamber 31 of the yarn processing member 23
The apex angle of and the inner diameter of the narrowest part of the outlet hole 32 are important factors, and when processing polyester multifilament yarn or polyamide multifilament yarn for clothing with a fineness of 30 to 300D to make it bulky, the preferred dimensions of each part of the device are as follows. For example:

Regarding the threading member 22, the outer diameter of the straight part is -5 to 20 mmφ. (In case of 1 piece) Vertical angle of fluid disturbance chamber with respect to yarn processing member 23 -30 to 80° Inner diameter of narrowest part -1.0 to 4.0 φ Next, the first
The present invention will be explained in detail using the drawings.

In the device of the present invention, as shown in FIG. 1, by providing a recess 21 on the outer periphery 28 of the threading member 22 on the outlet side, 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 21 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 vibrations generated in the thread are significantly stronger.

Particularly, when the fluid introduction pipe 29 is provided within the angle θ on the same side of the outlet side outer periphery 28 as the recess 27 is provided, the degree of deviation of the fluid jet is greatest.

The apparatus of the present invention can be used to add loops to spun yarns made of filaments or staples made of any natural, recycled, semi-synthetic 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 using the device of the invention, yarn is over-fed to the threading member, the rate of over-feed depending on the %a of yarn being forced down 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. Figure 3 is a longitudinal cross-section of the end of the threading member, showing a configuration in which a typical shaped recess is provided on the outer periphery of the threading member, and Figure 4 is a view of it from the outlet side to the inlet side. FIG. Figures 5, 1, and 9 are drawings showing other aspects of the recess provided on the outer periphery of the exit side, and Figures 6, 8, and 10 are views from the population side in each appendix. This is a side view of each. 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...Exit side outer periphery, 29... Fluid introduction pipe, 30...Fluid filled chamber, 31...Fluid disturbance chamber, 32...
... Lead-out hole.

Claims (1)

[Claims] 1(A) A threading member configured to pass a thread through a through hole of a pipe-like object from an entrance at one end to an exit at the other end;
(B) a thread processing member having a recess facing the outlet of the threading member and having a gap between the threading member and the thread and a fluid outlet hole communicating with the recess;
and (C) a thread bulking device including three members, a housing member to which the threading member and the thread processing member are attached, wherein the outer periphery of the exit side of the threading member is in the shape of a tapered truncated cone. and providing unevenly distributed recesses recessed from the outlet side outer circumferential surface in a part of the outlet side outer circumference,
The apparatus for bulking a yarn further characterized in that four parts of the yarn processing member have tapered portions that taper toward the exit hole for the yarn and fluid.