JP2000178850A - Nozzle for processing yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem on the processing of the nozzle, a problem on a high processing cost, a problem on the difficulty of maintenance, etc., because a channel for jetting a pressured fluid is produced by forming a round or elliptical hole having a very small diameter in the inner side surface of a nozzle. SOLUTION: This nozzle 1 for processing a yarn is formed in a divided type structure comprising a yarn introduction side member 2 and a yarn processing side member 3. Approximately U-shaped air introduction grooves 22 are formed on the inclined end surface 21 of the yarn introduction side member 2. The inclined end surface 21 of the yarn introduction side member 2 is engaged with the inclined end surface 31 of the yarn processing side member 3 in a tightly closed state to form U-shaped openings for jetting air. An approximately conical connection path 20b and an approximately conical inlet path 20c are disposed in the yarn introduction side member 2, and an approximately conical yarn-processing path 30b is disposed in the yarn processing side member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn processing nozzle for producing a loop or entanglement in a filament yarn such as a synthetic fiber by an injection force of a pressurized fluid (compressed air or the like) so as to give the yarn a nobility. Related to the structure.

[0002]

2. Description of the Related Art Conventionally, the injection force of a pressurized fluid has
2. Description of the Related Art A technique has been known in which a synthetic fiber filament forming a yarn has a loop or entanglement, and the yarn has sublimeness. Also known are thread processing nozzles of the so-called Taslan nozzle type and thread processing nozzles of the so-called Heverline nozzle type. The former is excellent in sublimeness, but maintenance such as cleaning of the nozzle part is difficult. Frequently required, the latter has been developed with the aim of further increasing the speed compared to the former, but requires the processing of fine nozzle holes with a diameter of 1 mm or less, and the maintenance cycle is short. Was.

[0003] A technique in which the above-described conventional technique is improved for the purpose of improving bulkiness and maintainability is also known. For example, by making the cross section of the yarn guide path into an elliptical shape, preventing rotation of the yarn in the yarn guide path to enhance sublimeness, or forming the opening through which the yarn is sent out from the nozzle into a trumpet shape. Or improving bulkiness.

[0004]

However, in the above-mentioned prior art, the introduction path for ejecting the pressurized fluid has a configuration in which a round hole or an oblong hole having a very small radius is formed in the wall surface of the nozzle. However, there is a problem that the cost is high, and maintenance is also difficult.

[0005]

The above is the problem to be solved by the present invention. Next, means for solving the problem will be described. That is, a nozzle that produces bulkiness in the yarn by the injection force of the pressurized fluid, wherein the nozzle is of a split type including a yarn introduction side member and a yarn processing portion side member, and the inclination of the yarn introduction side member is A configuration in which a non-circular groove is formed in the end surface, and the inclined end surface of the thread processing portion side member is hermetically engaged with the inclined end surface of the thread introduction side member to form a non-circular air outlet. did.

The yarn introduction side member has a yarn introduction passage at the center thereof, and has a conical entrance portion having a wide entrance side into which the yarn is inserted. It was configured to communicate with the introduction conduit while reducing the diameter toward the inclined end surface side.

Further, the yarn processing section side member has a delivery pipe for thread insertion at the center thereof, and the diameter thereof is increased in a tapered shape following the delivery pipe provided on the inlet side where the thread is inserted. It is configured to communicate with the thread processing path.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of the yarn processing nozzle of the present invention, FIG. 2 is a side sectional view showing a state where the yarn processing nozzle is inserted into a holder, FIG. 3 is a front view of a yarn introduction side member, and FIG. FIG. 5 is a cross-sectional view of the spraying portion, FIG. 5 is a perspective view of a yarn processing nozzle, and FIG. 6 is a diagram illustrating a state in which a sheath yarn and a core yarn are introduced into the yarn processing nozzle.

First, the overall configuration will be described. As shown in FIG. 1, the yarn processing nozzle 1 of the present invention
And a thread processing unit side member 3. The yarn introduction side member 2 is located forward (see FIGS. 1 and 2) in FIGS.
On the left is the front. The same applies hereinafter) to the tip 2
a, an intermediate portion 2b, and a locking portion 2c are connected in series, each having a substantially cylindrical shape, and a distal end portion 2a, an intermediate portion 2b,
The diameter increases in the order of the locking portion 2c, and the front end of the distal end portion 2a has an inclined end surface 21 formed in a substantially conical shape. In addition, the joining portion between the distal end portion 2a and the intermediate portion 2b is formed in a conical shape.

In addition, a thread insertion hole 20 is formed in the center of the thread introduction side member 2 so as to extend over the distal end portion 2a, the intermediate portion 2b, and the locking portion 2c. The thread insertion hole 20 is configured such that the introduction pipe 20a, the connection path 20b, and the entrance path 20c communicate with each other from the front, and the substantially cylindrical introduction pipe 20a located near the front end 2a is on the front end side of the inclined end face 21. And the rear of the introduction pipe 20a communicates with the connection path 20b,
b is a conical shape whose radius increases rearward, and the rear of the connection path 20b communicates with the entrance path 20c near the rear position of the intermediate portion 2b, and the entrance path 20c further increases in radius toward the rear. In the shape, the rear end penetrates the rear end of the yarn introduction side member 2 and forms an entrance 20i by the connecting path 20b and the entrance path 20c.

In the present invention, FIGS.
As shown in the figure, a plurality of (three in this embodiment) air introduction grooves 22 are provided on the inclined end surface 21 of the tip end portion 2a.
・ Is provided. As shown in FIG. 3 (FIG. 3 is a front view of the distal end portion 2a, and the intermediate portion 2b and the locking portion 2c are not shown), the air introduction grooves 22, 22.
a are provided radially at substantially equal intervals on the inclined end face 21 of FIG. 2A, and communicate with the front end of the introduction pipe 20a at the center thereof. Also, as shown in FIG. 4, the air introduction grooves 22 are formed in the wall surface of the inclined end face 21 so as to have a substantially U-shaped cross section.

On the other hand, the yarn processing side member 3 has a processing portion 3a,
It is composed of a locking portion 3b. The processing portion 3a has a substantially cylindrical shape, the rear end side of which is formed in a conical shape having a smaller radius toward the rear, and subsequently has an inclined end face 31 on the inner side of the processing portion 3a toward the front side. And receiving part 3
The inclined end face 31 is formed so as to match the shape of the inclined end face 21 of the leading end 2a of the yarn introduction side member 2 described above, and the tip end 2a of the thread introduction side member 2 is subjected to thread processing. When fitted to the receiving part 32 of the part side member 3, it can be sealed.

A thread insertion hole 30 is formed in the center of the thread processing portion side member 3. The thread insertion hole 30 is configured so that a delivery pipe 30a and a thread processing path 30b communicate with each other from the rear. The delivery pipe 30a penetrates the front end side of the inclined end surface 31, and the front of the delivery pipe 30a is a thread. In communication with the processing path 30b, the yarn processing path 30b has a tapered shape whose radius increases toward the front, and the front end penetrates the front end of the yarn processing section side member 3.

The assembly structure of the yarn introduction side member 2 and the yarn processing section side member 3 configured as described above will be described with reference to FIG. In FIG. 2, the holder 4 has a substantially cylindrical space provided therein, and the thread processing portion side member 3 is inserted from the front side thereof. An O-ring 42 is buried in the inner wall surface of the holder 4, and the thread processing portion side member 3 is fitted to a position regulated by the locking portion 3b while receiving a sufficient resistance. You. Then, a flange 7 is covered from the front side of the thread processing portion side member 3, and a screw and a pin 9 (not shown)
Fix with.

The thread introduction side member 2 is inserted from the rear side of the holder 4, and an O-ring 42 is also embedded in the inner wall of the holder 4 on the rear side. 2
When the thread is inserted, sufficient resistance is given, and the inclined end face 21 of the distal end portion 2a of the thread introduction side member 2 is pushed by the fixing cap 5 so as to be in tight contact with the inclined end face 31 of the thread processing section side member 3. Fixed. In addition, as this fixing method,
It may be screwed as shown in the figure,
You may make it fix using a set screw. Also,
The space 40 in the holder 4 shown in FIG. 2 is sealed by the O-rings 42.

Since the air introduction grooves 22 are provided on the inclined end surface 21 of the yarn introducing side member 2 as described above, the drawing is performed in a state where the inclined end surfaces 21 and 31 are in close contact with each other. 2 serves to communicate between the space 40 shown in FIG. 2 and the introduction pipeline 20a (or the delivery pipeline 30a), and forms an air outlet. As described above, the air ejection port (ejection hole) of the yarn processing nozzle of the present invention only needs to form a substantially U-shaped groove on the inclined surface of one of the two divided members. The step of forming a hole having a very small diameter in the member is not required, and the finishing of the inner surface of the U-shaped groove is easy, and the cost can be reduced. In addition, if the yarn introduction side member 2 is removed from the yarn processing section side member 3, the maintainability is excellent, and the air outlet can always be maintained in a good state. In this embodiment, the air introduction grooves 22 are provided on the yarn introduction side member 2, but may be provided on the yarn processing section side member 3. In the present embodiment, good results were obtained by using the air introduction groove 22 as a substantially U-shaped groove. However, the shape of the groove is not limited to this. For example, a rectangular or V-shaped groove may be used. However, the same effect can be obtained, and the finishing can be easily performed, and the cost can be reduced.

A fixing cap 5 is mounted from the rear side of the yarn introduction side member 2, and a guide 6 is mounted at a central portion in a radial direction of the fixing cap 5. An introduction hole 6a is provided at the center of the direction.
a, the thread insertion hole 20 is configured to communicate outward. The fixed cap 5 is provided with a plurality of drainage holes 5a that communicate the yarn insertion hole 20 with the outside. A guide member 8 is rotatably supported on a pin 9 for fixing the flange 7.

In the yarn processing nozzle of the present invention configured as described above, a filament yarn such as a synthetic fiber is fed from the introduction hole 6a of the guide 6 to the yarn insertion hole 20 of the yarn introduction side member 2. At this time, as shown in FIG.
Inside, a sheath yarn 50 and a core yarn 51 are introduced. The core yarn 51 is sent in a state containing water.

Then, pressurized fluid is rushed from the air introduction pipe 41 of the holder 4 shown in FIG. Then, via the space 40 in the holder 4, the pressurized fluid flows into the air introduction grooves (air outlets) 22.
Through the inside, and the introduction conduit 20a (or the delivery conduit 30a)
Squirted into. At this time, the sheath yarn 50 and the core yarn 51 which are fed into the yarn insertion hole 20 in the rear yarn introduction side member 2 by a feed roller or the like (not shown) are discharged from the introduction conduit 20a by the pressurized fluid to be ejected. It passes through the delivery pipe 30a and is vigorously fed into the front yarn processing path 30b.

The sheath yarn 50 and the core yarn 51 sent out from the delivery pipe 30a to the yarn processing path 30b are loosened in the yarn processing path 30b by the jetting force of the pressurized fluid. Exercise vigorously, entanglements and loops of filaments are formed, increase bulkiness, and
Both yarns 50 and 51 are intertwined to form one yarn and the yarn processing path 3
It is sent out from 0b. The pressurized fluid generally uses compressed air, but it is also possible to use a pressurized fluid containing water or the like.

As described above, since the substantially conical thread processing path 30b is connected to the front of the delivery pipe 30a, the pressurized fluid compressed and jetted at high speed in the delivery pipe 30a In the processing path 30b, it flows out at a stretch in the direction in which the radius increases, and the yarns 50 and 51 are effectively entangled to form a loop, so that it is possible to sufficiently add bulkiness. This also makes it possible to add bulkiness by reducing the amount of the pressurized fluid to be injected as compared with the conventional case, and to reduce the operating cost.

A part of the pressurized fluid ejected from the air introduction grooves 22 flows backward into the thread insertion hole 20 of the thread introduction side member. As described above, in the yarn processing nozzle 1 of the present invention, since the yarn insertion hole 20 of the yarn introduction side member 2 has a conical shape having a gradually increasing radius with the connecting path 20b and the inlet path 20c, The flow path of the pressurized fluid to be discharged is sufficiently ensured, and the dust and the dust accumulated in the thread insertion hole 20 and the moisture and the like contained in the core thread 51 are discharged backward, so that the thread insertion hole 20 The effect of cleaning the inside is exhibited, the frequency of maintenance of the yarn introduction side member 2 can be reduced, and an excellent effect is exhibited also in the durability of the constituent members.

[0023]

The yarn processing nozzle of the present invention is constructed as described above, and has the following effects. That is, a nozzle that produces bulkiness in the yarn by the injection force of the pressurized fluid, wherein the nozzle is of a split type including a yarn introduction side member and a yarn processing portion side member, and the inclination of the yarn introduction side member is A non-circular groove is formed on the formed end surface, and the inclined end surface of the thread processing portion side member is hermetically engaged with the inclined end surface of the yarn introduction side member to form a non-circular air outlet. Because of this configuration, it is only necessary to form, for example, a substantially U-shaped groove on the inclined surface of one of the two divided members. In addition to being unnecessary, finishing the inner surface of the U-shaped groove is easy, and cost reduction can be realized. In addition, if the yarn introduction side member is detached from the yarn processing section side member, the maintainability is excellent, and the air outlet can always be maintained in a good state.

The yarn introduction side member has a yarn introduction passage at the center thereof, and has a conical entrance portion having a wide entrance side into which the yarn is inserted. Since it is configured to communicate with the introduction pipe while reducing the diameter toward the inclined end face side, a sufficient flow path of the pressurized fluid flowing backward in the yarn introduction side member is secured, and dust accumulated in the flow path is reduced. Dust,
Since the water and the like contained in the yarn to be introduced are discharged backward, a cleaning effect in the flow path is exerted, the frequency of maintenance of the yarn introduction side member is reduced, and the durability of the constituent members is also reduced. It has an excellent effect.

Further, the yarn processing section side member has a delivery pipe for thread insertion at the center thereof, and the diameter thereof is increased in a tapered shape following the delivery pipe provided on the entrance side where the thread is inserted. The pressurized fluid compressed and jetted at a high speed in the delivery pipe flows out in a direction in which the radius expands at a stretch in the thread processing path, and effectively entangles the filament. Since a loop was formed, it was possible to sufficiently add bulkiness.

[Brief description of the drawings]

FIG. 1 is a side view of a yarn processing nozzle of the present invention.

FIG. 2 is a side sectional view showing a state in which a thread processing nozzle is inserted into a holder.

FIG. 3 is a front view of a yarn introduction side member.

FIG. 4 is a sectional view of an air blowing section.

FIG. 5 is a perspective view of a yarn processing nozzle.

FIG. 6 is a diagram showing a state in which a sheath yarn and a core yarn are introduced into a yarn processing nozzle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thread processing nozzle 2 Thread introduction side member 3 Thread processing part side member 20 Thread insertion hole 20a Introduction pipe 20b Connection path 20c Inlet path 20i Inlet part 22 Air introduction groove (U-shaped) 30 Thread insertion path 30a Delivery pipe 30b machining path

Claims (3)

[Claims] 1. A nozzle for generating bulkiness in a yarn by the jetting force of a pressurized fluid, wherein the nozzle is of a split type comprising a yarn introduction side member and a yarn processing section side member. A non-circular groove is formed in the inclined end surface of the thread processing portion side member, and the inclined end surface of the thread processing portion side member is engaged with the inclined end surface of the thread introduction side member in a sealed manner to form a non-circular air outlet. A yarn processing nozzle having a configuration. 2. The yarn introduction side member has a yarn introduction passage at a central portion thereof, and has a conical entrance portion in which an entrance side into which a yarn is inserted is widened. 2. The yarn processing nozzle according to claim 1, wherein said nozzle is configured to communicate with said introduction pipe while reducing its diameter toward the inclined end face side. 3. The yarn processing section side member has a delivery pipe for thread insertion at the center thereof, and the diameter thereof is increased in a tapered shape following the delivery pipe provided on the entrance side where the thread is inserted. 3. The yarn processing nozzle according to claim 2, wherein the yarn processing path communicates.