JPS5936006B2 - Method for manufacturing bulky processed yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing bulky processed yarn using a 5-axis circumscribed friction twisting device, in which the characteristics of the friction twisting device are changed for each unit, and the characteristics of the friction twisting device are changed for each unit. A special bulky textured yarn is produced by combining one of the two yarns obtained with one of the two yarns obtained by the temporary twisting device of the adjacent unit. The present invention provides a method.

It is known, for example, in Japanese Patent Publication No. 49-8825, to obtain a textured yarn with a good texture or a textured yarn with a unique texture by combining two different custom-made textured yarns.

However, in the above-mentioned conventional technique (in this case, processed yarns with different characteristics are individually manufactured and then combined), which poses a problem of poor productivity.

For example, as shown in Japanese Patent Publication No. 49-1267, there is also known a temporary twisting technique in which two yarns are processed in one unit, but in this method 1, a temporary twisting device is not used. It is necessary to equip two weights, which complicates the device.

For this reason, it is unavoidable to expand the floor area of the entire temporary twisting machine, increase equipment costs, and complicate operation, which causes an increase in costs. As a result of research to solve the problem, a 5-axis external frictional twisting device was completed, and the present invention utilizes this device.

That is, in the present invention, at least one friction disk can be mounted on five axes that rotate once in the same direction, four of which form the four vertices of a quadrilateral, and the other one which rotates once in the same direction. , and one set of three axes consists of an axis placed within the quadrilateral and two axes placed at two adjacent vertices. Axis group 1 of each set
Here, from any one axis to the adjacent axis, clockwise,
Alternatively, the friction disks are overlapped one by one in a spiral staircase pattern counterclockwise, and both of the two sets of shafts are arranged so that the friction disks in contact with the yarn are In a temporary twisting machine equipped with a 5-axis circumscribed friction temporary twisting device for each weight, which consists of one L unit installed in the same direction as the helical direction of the order and the rotating direction of the friction disk, the friction circle of the friction temporary twisting device is At least one of the friction property conditions consisting of the number of plates, diameter, thickness, material, surface roughness, distance between coaxial friction disks, and distance between axes is alternately changed for each unit. The settings are made in advance, and in one unit, a total of 2 sets of shafts (1 set including the above 3 shafts), 1 thread for each set, and 2 threads in total are fed and temporarily twisted, and each Of the 2 yarns that have been temporarily twisted in the unit, 1 yarn is combined with 1 yarn that has been temporarily twisted in the adjacent weight unit,
This is a method of winding up one bulky processed yarn per spindle.

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

Figure 1 shows 5 units consisting of a new unit used in the present invention.
FIG. 2 is a side view showing a main part of an example of a shaft circumscribing friction disk type temporary twisting device, and FIG. 2 is a plan view thereof.

Rotatably supported axes A and B in the device.

D and E are placed at each vertex of the quadrilateral, and one axis C within the quadrilateral
is located.

Each shaft has two friction disks (al, a2.
b□, b2. C11, C2°dl, d2. el, C2)
is attached to constitute one unit of temporary twisting device.

These friction disks are connected to a pair of adjacent axes C, D.

Looking at E, e1 → d1 → C0 → e2 → d2 → c2
They are stacked in a clockwise direction in a spiral staircase pattern so that they overlap each other in this order.

Similarly, in one set of axes A, B, and C, b1 → c1 → a
They are stacked clockwise in the order of 1→b2→c2→a2 in a spiral staircase pattern so that they overlap with each other.

In other words, each friction disk is mounted in such a way that its position becomes higher in the clockwise direction in a group of axes consisting of two sets of adjacent three axes A, B, C and C, D, E. There is.

When the five axes of the temporary twisting device shown in FIGS. 1 and 2 are rotated l in the counterclockwise direction (arrow in the figure), the yarn Y1 first comes into contact with the friction disk c2, then comes into contact with d2je2, and then returns to C.
The threads are brought into contact in the order of I 7 dl 161, subjected to frictional twisting, heated in the Z direction, and become twisted yarn having torque in the Z direction.

Similarly, the yarn Y2 is connected to the friction disk a2. c2. b2. a0. c.
1. It is heated in the Z direction in contact with bl and becomes a temporarily twisted yarn having a torque in the Z direction.

FIG. 3 is a plan view of another example of a five-axis circumscribed friction temporary twisting device in which the way the friction disks are assembled is changed.

In this device, the friction disk is connected to a pair of adjacent axes C9D.
, E in the order of d1 → e1 → c1 → d2 → e2 → c2, so that they overlap each other and become higher in the counterclockwise direction in a stepwise manner.

Another set of adjacent axis groups A and B. C1 is a1 → c
In the order of 1→b, →a2→c2→b2, the heights are increased by 1 in a counterclockwise direction in a spiral staircase pattern so as to overlap each other.

Then, as shown in FIG. 3, when each shaft of the five-axis temporary twisting device with additional friction disks is rotated in the clockwise direction (arrows in the figure), the yarn Y1 is moved to the friction disk c2. e2. d2c1. e1.
It contacts in the order of dl and undergoes frictional twisting and is heated in the S direction.
This results in a temporarily twisted yarn that has directional torque.

Similarly, yarn Y2 has friction disks b2, C2ja2yblj
The c1jal is heated in the S direction in the order of 1, and becomes a temporarily twisted yarn having a torque in the S direction.

The material constituting the contact surface of the friction disk can be rubber-based (urethane rubber, etc.) or non-rubber-based (ceramic-based, etc.).

Next, the present invention for manufacturing bulky processed yarn using a temporary twisting machine equipped with a five-axis circumscribed friction temporary twisting device for each weight will be explained with reference to FIG. 4.

In FIG. 4, the threads pulled out from the thread packages 1, 1' are sent to the sending rollers 2, 2, with 2 threads per spindle as a set.
’ power).

The yarn is temporarily twisted by a 5-axis external friction twisting device 5, 5'l having different frictional characteristics, and is then twisted by a contact type heating plate which is a heat treatment device 3, 3' for fixing the twist. The twist is fixed.

Here, 4 and 4' are presser pins for bringing the yarn into sufficient contact with the hot plate, and 10 is a guide.

In addition, in the present invention, a series of processes from the delivery port to the heat treatment device for fixing the twist, the external friction temporary twisting device, and the winding device 1 that constitute the temporary twisting machine are called a weight, and the temporary twisting device is called a weight. The yarns 6, 7, 8, and 9 are combined with adjacent yarns.

In other words, the thread 7 is interlaced with the thread 8 of the adjacent weight, and similarly, the first thread 6 is the thread shown by the dotted line on the left weight, and the thread 9 is the thread shown by the dotted line on the right weight. The threads are combined with each other.

In order to obtain the desired yarn form and physical properties, the thus-paired yarn passes through a single yarn entangling device 13 and a heat treatment device 14, and then is taken to a winding device 16, where it is processed substantially per 1 strand of weight (unit). 1
It is wound up as the thread of a book.

Note that 11 is a focusing guide, 12 is a 2nd roller, and 15 is a 3rd roller.

In FIG. 4, the 5-axis external friction temporary twisting device 5.5' rotates the rotational direction of the friction disk and the friction disk so as to give temporary twists (S twist and Z twist) in mutually opposite directions. The order of addition of the two axes to the five axes may be set to be reversed, or may be set to give temporary twists in the same direction (S twist or Z twist) to each other.

As described above, an important feature of the present invention is that the friction characteristics of the 5-axis external friction temporary twisting device are alternately changed for each unit.b5, conditions for this friction characteristic and specific means thereof An example is as follows.

■ Change the number of friction discs (for example, device 5 has 9 discs x 2
set, and device 5' is equipped with 2 sets of 6 sheets).

■ Change the diameter of the friction disk (for example, device 5 rubs 50φ and device 5' rubs 48φf).

■ Change the thickness of the friction disk (for example, device 5 has a thickness of 7 m).
m, and the device 5' is 4).

■ Change the distance between the friction disks of the circle and the shaft (e.g. device 5
is the friction disk distance 1. Omrn and device 5' is 0.5
mm).

(2) Change the distance between the five axes (for example, the distance between the axes for device 5 is 40 nm, and for device 5' it is 387 nm).

■ Change the material of the friction disk (for example, device 5 is made of rubber and device 5' is made of ceramic).

■ Change the surface roughness of the friction disk (for example, device 5 uses a disk with high roughness, device DA uses a disk with low roughness)
.

Any one or more of the conditions (1) to (2) exemplified above may be selected, and in this way, a bulky textured yarn having special crimp characteristics based on the difference in friction characteristics can be obtained.

In addition, when a large number of spindles are arranged in Fig. 4, one of the two yarns to be temporarily twisted by the leftmost and rightmost weights.
The yarn does not have the other yarn 05 to be doubled, and the relationship between the number of spindles U and the number of winding devices n is n = U -1, but in this case, there is essentially one yarn per spindle after doubling. This does not preclude the requirement that processed yarn can be wrapped.

In the present invention, it is more preferable that the following conditions be satisfied between the total yarn fineness (D) and the number of filaments ('J).

D≧100 N>30 By performing a temporary twisting process within a range that satisfies the above conditions, it is possible to significantly reduce the occurrence of fuzz and obtain a yarn with good crimp characteristics.

The more detailed implementation conditions of the present invention, the fibers that can be processed, etc. are as follows (b5), but are not limited to these.

(A) The applicable yarns and their combination supply system are yarns made of thermoplastic polymers such as polyamides, polyesters, polyacrylics, and polyolefins.

In this case, the combination of two yarns to be combined is not only a combination of yarns with the same polymer and the same characteristics, but also a combination of two yarns with different characteristics such as polymer cross-sectional shape, dyeability, intrinsic viscosity, degree of orientation, etc. is also possible.

(B) Applicable Yarn Forms and Implementation Methods A) The drawn yarn of the above-mentioned thermoplastic synthetic fiber is subjected to a temporary twisting process using the apparatus and method described above, and then the yarn is doubled.

The undrawn yarn or pre-oriented yarn (highly oriented undrawn yarn: POY) of the above-mentioned thermoplastic synthetic fiber can be temporarily twisted using the equipment and method described above, either sequentially after drawing or simultaneously with drawing. After processing, the threads are doubled.

(The mouth process method is more preferable.) (C) Machining speed: 1 q+T (B) 1 bite is 200 m7
It is preferred to carry out at a speed of at least 300 m/min, preferably at least 300 m/min.

Since the yarn before doubling can be processed with a small fineness,
It is also suitable for high-speed machining due to its heat-fixing effect.

(D) Thread piling method There are several possible piling methods for plucking two yarns from the tentative twisting devices of adjacent weights, as shown in FIG. 5.

Both can be adopted.

(E) In order to improve the bundling property of a yarn obtained by piling two intertwined single yarns, it is possible to apply a single curl between the single yarns using a converging means such as an air jet nozzle to the yarn after the doubling. It is even more effective.

(F) Heat treatment after yarn splicing 2 yarns Heat treatment of the yarn after yarn splicing mainly to eliminate torque and stretch blows will have an even greater effect (h5).

Note that the single yarn entanglement treatment may be performed on only one layer or both layers.

Further, the order may be either single yarn entanglement treatment followed by heat treatment or vice versa.

The present invention uses a 5-axis external friction temporary twisting device, and is configured so that the conditions of the temporary twisting means, that is, the friction disk, are alternately changed for each temporary twisting device. be effective.

(1) Since a compact frictional twisting device is used, there is no need to increase the distance between the weights of the temporary twisting device, and the equipment cost is low.

(2) Since one processed yarn can be obtained with one unit (one spindle) after yarn doubling, the productivity is twice that of the conventional yarn doubling method, which significantly improves efficiency and reduces costs.

(3) Since the friction characteristics of the 5-axis temporary twisting device are changed, the processing conditions (e.g., stretching ratio, friction body rotation speed, processing speed, etc.) are kept the same, and the desired special crimp is produced from the same type of supply system. It is possible to obtain a processed yarn with characteristics.

Furthermore, since the temporary twisting device has a simple configuration, it is easy to manufacture, maintain, and maintain the device.

(4) Particular feature 1 In the first aspect of the present invention, the following desired bulky textured yarn with various changes is obtained by changing the conditions of friction properties.

(a) Highly bulky, temporarily twisted yarn with a mixture of filaments with different crimped forms (b) Specially processed yarn with fuzz and the strength of a processed yarn comparable to that of filament ()) Discontinuously Special processed yarn with strong cohesiveness The above-mentioned unique bulky processed yarn is used to alternately change the friction characteristics of the 5-axis circumscribed friction temporary twisting device installed in the temporary twisting machine shown in Fig. 4 for each unit. obtained by

The means and effects are as described above, but for example, even if the rotational speed of the friction disks is the same, the surface speed is different from each other, and the surface friction force is different. Depending on the absolute value of the speed and surface friction force, the above-mentioned three kinds of specially processed yarns 1) and 3 can be obtained according to one's wishes.

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

Example l 288D-48 spun at a take-up speed of 3000 ryt/min
The polyethylene terephthalate highly oriented undrawn yarn of F is used as the fourth
It is supplied to the temporary twisting machine shown in the figure, and subjected to one temporary twisting process at the same time as stretching under the conditions shown in Table 1 (in both cases, after S combing, the fifth
According to method 1 shown in the figure, two yarns were combined and wound into one processed yarn without performing single yarn interlacing treatment or heat treatment.

By setting the rotational speed of the friction disk in the following three ways, three types of special bulky yarns as shown in Table 2 were obtained.

Example 2 Same conditions as Example 1 (conditions in Table 2 are /161 and flat 2)
After temporary twisting and doubling, the single yarn interlacing process (
The film was subjected to heat treatment (FIG. 4, 13), s and heat treatment (FIG. 4, 14) and wound up.

The single yarn entanglement and heat treatment conditions are as follows.

Single yarn entanglement conditions Air injection nozzle method % type % Heat treatment equipment length 1.2 m (hollow heater) Temperature
180°C Overfeed rate 12% Both of the two types of processed yarns obtained were bulky processed yarns with good bundling properties.

Example 3 A highly oriented undrawn polyethylene terephthalate yarn of 288D-48F spun at a drawing speed of 3000 m/min was fed to one tentative twisting machine shown in FIG. After twisting, the fifth
The two yarns were combined using method 1 in the figure, and the single yarns were intertwined and then wound.

As shown in Table 3, the disk characteristics were changed once for each unit, and at the same time, the twist direction was also changed, and yarn was obtained at a disk rotation speed of 4300 rl"'.

The specially processed yarn was a mixture of the finely crimped yarn obtained in device 5 and the coarsely crimped yarn obtained in device 5', and had good bundling properties and low torque.

As a result of making knitted fabrics using this yarn, it has a large sense of fullness,
A product h3 with a soft surface touch and a good texture was obtained.

[Brief explanation of drawings]

Fig. 1 is a side view showing the essential parts of an example of a 5-axis circumscribed friction temporary twisting device used in the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is a different one in which the friction disk assembly is changed. A plan view of a 5-axis circumscribed plate weaving device, FIG. 4 is a front view showing the overall configuration of an example of the device for carrying out the present invention, and FIG. It is. A, B, C, D, E・----uniaxial, al
, a2. bl, b2゜C1) C2+d1+d2t el
, C2""" friction disk, 1-, 1'... thread package, 2.2'-... delivery roller, 3,3
'・・・Heat treatment equipment for twist fixation, 4,4...
...Press pin, 5.5'...5-axis external friction temporary twisting device, 6,7゜8.9...Thread, 10...
...Guide, 11...Focusing guide, 12.
...2nd roller, 13...Single yarn interlacing device, 14...Heat treatment device, 15...3
rd roller, 16... winding device.

Claims (1)

[Claims] 1 At least one friction disk can be attached to the five axes that rotate in the same direction, forming four vertices of four quadrilaterals, and the other one is located one position within the quadrilateral. Of the two groups of axes, one set consists of three axes, each consisting of an axis placed in the quadrilateral and two axes placed in two adjacent vertices. For each set of axis group 1,
From any one axis, adjacent shafts are rotated clockwise or counterclockwise sequentially in a spiral staircase pattern, one friction disk at a time, overlapping each other, and both sets of shafts are rotated one by one.
This is a 5-axis circumscribed friction temporary made of one unit installed in the same direction as the helical direction of the friction disks in contact with the yarn and the rotational direction of the friction disks when viewed from the yarn traveling direction. In a temporary twisting machine equipped with one twisting device per spindle, the number, diameter, thickness, material, surface roughness, and distance between coaxial friction disks of the friction disk of the friction temporary twisting device and the distance between the five axes. At least one condition of the friction characteristics consisting of the distance is set alternately for each unit, and one unit has a total of two sets of axes, one set of the three axes. Group 1,
A total of two yarns, one yarn for each set, are fed and pre-twisted, and one of the two yarns pre-twisted in each unit is temporarily twisted in an adjacent weight unit. A method for producing a bulky textured yarn, which comprises combining yarns and winding the bulky textured yarn into one bulky textured yarn substantially per 1 weight.