JPH049214B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to improvements in yarn fluid treatment devices. [Prior Art] Conventionally, a wide variety of fluid processing devices using fluids such as air have been provided. Typical examples are so-called taslan nozzles and interlaced nozzles, and spun yarn-like processed yarns using these nozzles have been widely introduced in the clothing field as differentiated, high-value-added materials. These taslan-type and interlace-type nozzles generally place the feed yarn under a strongly turbulent flow of fluid to cause opening and entanglement, which additionally produces visual features such as loops and fuzz, which are advantageous. Looking at the structure of the yarn, all of the processed yarns have a structure in which the constituent filaments intertwine in a three-dimensional manner in a complex manner, and exhibit excellent sublimeness and a pulky feel. There is. However, on the other hand, because it has such a structure, it lacks a sense of fullness in texture and tends to have so-called flakiness, and also tends to have the disadvantage of having a whitish appearance and lack of luster. be. On the other hand, although it basically uses air swirling flow instead of turbulent flow, the direction of rotation of the swirling flow is opposite to that of the running yarn, and a large amount of other sheath yarn is supplied from the air injection hole. and form a loop,
JP-A-58-8146 discloses a fluid treatment device in which the loop is wound around a running yarn in multiple layers in an open-end manner to obtain a processed yarn having a real twist in appearance. However, with this device, a slub-like yarn with large unevenness in thickness along the length of the yarn can be obtained;
It has been difficult to obtain a relatively uniform processed yarn with small unevenness in thickness along the length of the yarn. [Object of the Invention] The present invention solves the above-mentioned problems and provides a fluid processing method that can extremely stably produce processed yarn that is rich in gloss, has a less fluffy texture, and is relatively uniform with less yarn unevenness. The purpose is to provide equipment. [Structure of the Invention] The gist of the present invention is to provide a core yarn guide hole having a circular cross-sectional shape and a hole diameter increasing from the inlet side to the outlet side, and a core yarn guide hole that opens tangentially into the core yarn guide hole. a main body portion having a fluid injection hole that extends to the core yarn guide hole, and a sheath yarn supply hole that is combined with the fluid injection hole at a position leading to the core thread guide hole;
The fluid treatment device is characterized by comprising a thread take-out portion having a substantially conical shape and having a thread take-out hole on the central axis, the top of which is oriented in a direction opposite to the direction in which the core thread travels. The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an example of a fluid treatment device according to the present invention, and FIG. 2 is a sectional view taken along the line A-A' in FIG. 1. In FIGS.
B is a yarn take-out part, 1 is a core yarn, 2 is a sheath yarn supply hole, 3 is a fluid injection hole, 4 is a core yarn guide hole, and 5 is a sheath yarn. The reason why the desired processed yarn can be obtained by the apparatus of the present invention is as follows. That is, in the conventional device shown in FIG. 3, the sheath yarn 5' is guided to the core yarn guide hole 4' together with the jetting fluid, and is wound around the core yarn 1' in a loop shape by the swirling flow. However, the entire swirling flow inside the core thread guide hole 4' moves in the opposite direction to the running direction of the core thread 1', and the sheath thread 5' does not necessarily move around the fluid injection hole 3'. thread 1'
The winding does not always occur tightly, but the winding occurs in a wide range up to the vicinity of the entrance of the core yarn guide hole 4'. For this reason,
There is variation in the amount of winding in the longitudinal direction of the core yarn 1', which results in a processed yarn of slab town,
This makes it difficult to obtain processed yarn that is relatively uniform in appearance in the longitudinal direction. In addition, since the vicinity of the entrance of the core thread guide hole 4' is moving away from the fluid injection hole 3', the swirling flow is somewhat weakened, and the winding tends to be relatively loose, and the winding of the core thread 1' It also has the disadvantage that the sheath thread 5' wound around it tends to slip and move. On the other hand, in the device of the present invention, as shown in FIG. 4, the sheath yarn 5 is guided into the core yarn guide hole 4 together with the jetting fluid, but the core yarn guide hole 4 is expanded in the running direction of the core yarn. Therefore, the swirling flow is a swirling flow along the running direction of the core thread 1, and the sheath thread 5 rides on this swirling flow and winds around the core thread 1. In the device of the present invention, since the substantially conical thread take-out part (B) is installed downstream of the main body (A), the loop end of the excess sheath thread 5 is removed by the swirling flow into the core thread guide hole. However, the winding point is limited between the fluid injection hole 3 and the top of the yarn take-out section A. Therefore, variations in the amount of winding of the sheath yarn 5 in the yarn longitudinal direction are suppressed, and a processed yarn having a relatively uniform yarn form in appearance can be obtained. Further, since the winding point is relatively restricted near the fluid injection hole 3 and the winding force is strong, a stable processed yarn with little shearing movement can be obtained. Note that the relative positional relationship between the top of the yarn take-out part A and the fluid injection hole 3 affects processing stability and yarn appearance. That is, when the top of the yarn take-out part B is near the exit of the core yarn guide hole 4, the area where the sheath yarn 5 is wound around the core yarn 1 is wide, and the winding point is likely to fluctuate, causing the winding. However, as the top of the yarn take-out section B is moved upstream of the core yarn 1 and brought closer to the fluid injection hole 3, the sheath yarn 5 is wound. The winding points are regulated and fluctuations in the winding position are reduced, resulting in a uniformly processed yarn with less yarn unevenness. However, if the top of the thread take-out part A is moved beyond the fluid injection hole 3 to the upstream side of the core thread 1, the sheath thread becomes large and is blown out of the device, causing a case. This is not preferable because there is a risk that the thread will break frequently due to getting caught on a guide or the like other than the device. The present invention will be explained in more detail below using Examples. Example 1 Using the processing apparatus shown in FIG. 5 equipped with the fluid processing device shown in FIG. 1, processing was carried out under the following conditions using polyester spun yarn (60 meter count) as the core yarn and triacetate filament B55d/15f as the sheath yarn. . Opening angle of the core thread guide hole θ ₁ = 60° Vertical angle of the thread take-out portion θ ₂ = 60° Distance L between the fluid injection hole and the minimum diameter part of the core thread guide hole =
5mm

[Table] In all of the processed yarns obtained, there is almost no shearing movement of the sheath yarn, and the yarn is tightly wrapped.As shown in the table above, the yarn form is similar to that between the fluid injection hole and the top of the yarn handling section. By changing the distance, it can be changed arbitrarily from a slab style to a straight style. Example 2 Using the same equipment as used in Example 1, polyester filament SD75d/36f,
Triacetate filament B55d as sheath yarn
Processing was carried out under the following conditions using f. First feed roll circumferential speed = 40 m/min Second feed roll circumferential speed = 600 m/min Delivery roll circumferential speed = 40 m/min Air injection pressure = 1.5 Kg/cm ² Distance l between fluid injection hole and top of yarn take-out section = 1.5 cm The obtained processed yarn was a yarn in which the sheath yarn was wound around the core yarn in a real twist, and was rich in luster, had a less fluffy texture, and had a relatively uniform shape.

[Brief explanation of drawings]

FIG. 1 is a vertical side view showing an example of a fluid treatment device according to the present invention, FIG. 2 is a cross-sectional view taken along the line A-A' in FIG. An explanatory diagram, FIG. 4 is an explanatory diagram showing the state of processing yarn formed by the apparatus of the present invention, and FIG. 5 is a side view of the entire processing apparatus incorporating the apparatus of the present invention, and FIGS.
In Fig. 5, 1 and 1' are the core yarn, 2 is the sheath yarn supply hole, 3 and 3' are the fluid injection holes, 4 and 4' are the core yarn guide holes, 5 and 5' are the sheath yarn, and 6 is the sheath yarn. 1st feed roll,
7 is a second feed roll, 8 is a fluid treatment device, 9
1 is a telly roll, 10 is a winding roll, A is a main body part, and B is a thread take-out part.

Claims (1)

[Claims] 1. A core yarn guide hole whose cross-sectional shape is circular and whose diameter increases from the inlet side to the outlet side, a fluid injection hole that opens tangentially into the core yarn guide hole, and a core yarn guide hole. A main body part having a sheath yarn supply hole that is combined with a fluid injection hole at a position up to the main body part, and a main body part on the central axis that is located downstream of the main body part and whose top part is oriented in the opposite direction to the core yarn traveling direction. 1. A fluid treatment device comprising: a thread take-out portion having a substantially conical shape having a thread take-out hole;