JPH0978368A - Double twister and double twisting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for double twisting of doubled yarn in which the unevenness of twisting or yarn breakage is hardly caused when carrying out the double twisting of the doubled yarn prepared from mutual yarns having different elongations. SOLUTION: This double twister is obtained by installing the first yarn guide part 53 at a position opposite to the lateral face of a yarn feed package P in a flyer 50 of the double twister capable of twisting yarn twice in a process for unwinding the yarn from the yarn feed package P through the flyer 50 freely rotating around a cylindrical unit 22 stood from the center of the yarn feed package P, leading the unwound yarn from the cylindrical unit 22 to a rotating disk 7 arranged under a stationary board 9, passing the yarn along the rotating disk 7 and leading the yarn to an upward balloon guide 39. The resultant doubled yarn is unwound toward a position (point D) located within a width of the yarn feed package P with the flyer 50 so as to be led to the cylindrical unit 22 while applying a tension to the yarn with the flyer 50. Thereby, the separation of the doubled yarn by the slackness and crossing of the unwound yarn on the package end face are eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double twisting machine and a double twisting method, and more particularly to a double twisting machine capable of double twisting mixed yarns having different elongations with less uneven twisting and breakage.

[0002]

2. Description of the Related Art First of all, a double twisting machine is one in which a yarn feeding package is placed on a stationary platen, and a yarn guided downward through a tubular body erected at the center of the yarn supplying package is placed under the stationary platen. The yarn is twisted twice in the process of guiding the yarn to the upper balloon guide along the rotary disc arranged.

A conventional example of such a double twisting machine will be described with reference to FIG. In FIG. 4, a support tube 1 is fixed to a frame 2, and a spindle 4 is rotatably supported by the support tube 1 via a bearing 3. In addition, spindle 4
The warb 5, the yarn storage board 6, and the rotary disk 7 are integrally fixed to the. The belt 16 is in contact with the warb 5, and the rotating disk 7 and the like rotate at high speed. Further, a stationary platen 9 is supported on the spindle 4 via bearings 8, and the stationary platen 9 is maintained in a stationary state by the attraction action of the magnet 10 fixed to the stationary platen 9 and the magnet 12 fixed to the magnet case 11. .

Next, the yarn feeding cover 13 is fixed to the stationary platen 9, and the outer balloon limiting cylinder 14 is fixed to the frame 2. A yarn feeding package P is placed on the stationary platen 9, and a tension device 15 is erected on the stationary platen 9 in the core tube of the yarn feeding package P. That is, the lower tubular body 21 is fitted in the central tubular portion 9 a of the stationary platen 9, and the tension device 15 is inserted in the lower tubular body 21.

A fryer 40 is loosely fitted in the upper cylinder 22 of the tension device 15, and the fryer 40 is fitted with a cap 2.
It is rotatably supported so as to rotate with the yarn unwound on the upper part of the upper part 3. This flyer 40 has a boss 41 and a wire 42
It is the one that is bent and attached in a V shape. As shown in FIG. 6, the tip of the wire 42 is a snell wire 43 for threading. The snell wires 43 are provided at both ends of the wire 42, and the thread is passed through one of the snell wires 43.

The yarn Y unwound from the yarn supplying package P passes through the snell wire 43 of the flyer 40, enters the upper cylinder 22 of the tension device 15, and receives the upper support material 24 and the lower support material 26.
A predetermined tension is applied by the capsule tensor 32 sandwiched by and is guided to the yarn outlet hole 18 through the passage 17 and the bend 17a. Further, it passes between the yarn supply cover 13 and the outer balloon limiting cylinder 14 and is guided to the upper balloon guide 39. At that time, the yarn storage board 6, that is, the rotary disk 7 is rotated by the driving force of the belt 16, and the yarn Y is twisted twice. Flyer 4
0 rotates with the yarn Y unwound from the yarn supplying package P, and the unwinding angle θ is made larger than zero to prevent the unwinding.

By the way, in order that the yarn feeding package P as large as possible can be placed on the stationary platen 9, the snell wire 43 as the first yarn guiding portion of the flyer 40 is positioned above the end face of the yarn feeding package P. ing.
Then, the yarn supplying package P can be thickened to the end of the inner diameter of the yarn supplying cover 13 without being disturbed by the flyer 40.

[0008]

When the above-mentioned conventional double-twisting machine double-twists a composite yarn having different elongations, for example, a composite yarn of filament and span, a composite yarn of filament and spandex, There was a problem that uneven twisting and yarn breakage occurred frequently. As a result of pursuing this cause, what is supposed to be constantly unwound from the upper end of the side surface of the yarn supplying package P by a short route as shown by the one-dot chain line in FIG. As a result of a route that greatly crosses the end face of P, it was found that uneven twisting and yarn breakage frequently occurred.

The present invention has been made in pursuit of the cause of twist unevenness and yarn breakage that occur in double twisted yarns of mixed yarns having different elongations, and the invention is defined in claims 1 and 2 of the present invention. An object of the invention is to provide a double twisting machine in which uneven twisting and yarn breakage hardly occur. Another object of the present invention is to provide a double-twisting method in which uneven twisting or yarn breakage is less likely to occur when double-twisting mixed yarns having different elongations.

[0010]

In order to achieve the above object, the invention according to claim 1 of the present invention places a yarn feeding package on a stationary plate and stands upright at the center of the yarn feeding package. The yarn is unwound from the yarn supplying package via a flyer rotatable around the tubular body, and the unwound yarn is guided from the tubular body to a rotating disk disposed under the stationary plate,
A double-twisting machine that double-twists the yarn along the rotating disk and guides the yarn to the upper balloon guide.
The flyer has a first yarn guide portion at a position facing a side surface of the yarn supply package.
When the first yarn guide faces the side of the package, the unwound yarn does not cross the end face of the yarn supply package. In addition to the invention of claim 2 and the configuration of the invention of claim 1, the flyer has one or more thread guide portions from the first thread guide to the tubular body. To do. At least one thread guide portion from the first thread guide to the tubular body applies tension to the thread to make it difficult to loosen. Further, the invention according to claim 3 unwinds the composite yarn from a yarn supply package in which a composite yarn of yarns having different elongations is wound, by a flyer which rotates around the yarn supply package. The yarn is guided to a tubular body that stands upright in the center of the yarn supplying package, the yarn is guided along a rotating disk located below the yarn supplying package, and the yarn is twisted twice in the process of guiding the yarn to the balloon guide above. In the double twisted yarn method, the compound yarn is unwound by the flyer toward a position within the width of the yarn supplying package, and the compound yarn is guided to the tubular body while applying tension by the flyer. Characterize. Since the package end faces of the yarns with different elongations are likely to be laterally cut due to slack, the yarns are unwound toward the position within the width of the yarn supplying package to make it difficult to traverse the package end faces. The tension is applied by the flyer to the tubular body while the tension is applied to prevent the loosening.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a sectional view of the double twisting machine, Fig. 2
FIG. 6 is a diagram showing a flyer. The main part different from the conventional example of FIG. 4 is the shape of the fryer. Since other parts are the same as those in FIG. 4, the same reference numerals are given and the description thereof is omitted.

In FIG. 1, a gap ε is provided between the yarn feeding cover 13 and the side surface of the yarn feeding package P.
The flyer 50 is entering inside. The detailed structure of the fryer 50 is shown in FIG. 2A is a front view of the fryer 50, FIG. 2B is a side view of the fryer 50, and FIG. 2C is a top view of the fryer 50.

In FIG. 2, the flyer 50 is a boss 5.
1 and a bending plate 52 fitted and fixed to the boss 51
And the first thread guide portion 5 attached to the plate 52
3, the second yarn guide portion 54 and the third yarn guide portion 55, and the counterweight 56 also fastened to the plate 52.
It consists of

The plate 52 includes a first horizontal arm 57 and a second horizontal arm 57.
The horizontal arm 58, the diagonal arm 59, and the vertical arm 60 are formed so as to be continuous. The boss 51 is fitted into a hole located in the middle of the first horizontal arm 57 and the second horizontal arm 58 and fixed by a bolt. The first thread guide portion 5 is provided on the lower side of the vertical arm 60.
3 is attached, the second yarn guide portion 54 is attached to the upper side of the vertical arm 60, and the third yarn guide portion 55 is attached to the outer end of the second horizontal arm 58. A counterweight 56 is fixed to the outer end of the first horizontal arm 57 with a bolt.

The first yarn guide portion 53 has a hole 53a facing the side surface of the yarn supplying package and a guide plate 53b. The yarn withdrawn while being rubbed by the hole 53a changes its direction by about 90 ° upward along the guide plate 53b. The second yarn guide portion 54 is formed of a plate against which the yarn rubs. The yarn from the first yarn guide portion 53 is rubbed by the plate of the second yarn guide portion 54, and the direction of the yarn is changed toward the third yarn guide portion 55 from vertical to oblique. The third yarn guide portion 55 has a hole 55a, and while being rubbed by the hole 55a, the yarn slightly bends to the top of the cylinder (not shown) and changes its direction.

Returning to FIG. 1, the yarn from the yarn supplying package P to the top of the upper cylinder 22 is A at the top of the upper cylinder 22.
Point, point B of the third yarn guide portion 55, and the second yarn guide portion 5
The direction is changed while being rubbed at the four points, point C of point 4 and point D of the first thread guide portion 53.

A friction member 6 is provided on the lower surface of the fryer 50.
1 is attached, and the portion of the friction member 61 is rotatably mounted on the plate portion 62 fitted in the upper tubular body 22. The amount of force required to rotate the fryer 50 can be adjusted by the weight 63 placed on the boss 51. Further, the center of gravity of the fryer 50 is located exactly at the boss 51 portion, and a counterweight 56 having an appropriate weight is fixed by bolts so that the fryer 50 can rotate smoothly. A fryer 40 having a simple shape as shown in FIG.
In that case, it is possible to make the shape symmetrical with respect to the left and right sides and balance the shapes. However, the fryer 50 having a complicated shape as shown in FIG.
In this case, when the shape is symmetrical with respect to the left and right, the whole becomes heavier and the structure becomes more complicated.

In the double twisting machine having the above-described structure, the yarn unwound from the yarn supplying package P is drawn toward the point D of the first yarn guide portion 53 facing the side surface of the yarn supplying package P. Therefore, there is no possibility that the unwound yarn will cross the upper end surface of the yarn supplying package P regardless of the property of the yarn.

At the point D of the first guide portion 53, about 90 °
Since the yarn only changes direction, tension is applied to the yarn. Similarly, since the yarn is pressed against the plate and rubbed at the point C of the second guide portion 54, tension is applied to the yarn. Similarly, since the yarn is pressed against the peripheral surface of the hole and rubbed at the point B of the third guide portion 55, tension is applied to the yarn. Next,
At the point A on the top of the upper tubular body 22, when the yarn turns over 270 ° and is introduced into the upper tubular body 22, tension is applied to the yarn. Note that the flyer 50 rotates around the upper cylindrical body 22 together with the unwinding of the yarn, but the rotation resistance of the flyer 50 can be adjusted by the weight 63.
That is, if the weight 63 is increased, it becomes difficult for the fryer 50 to rotate, and the tension applied after the point D increases.

Thus, the predetermined tension is sequentially applied to the yarn unwound from the yarn supplying package P (point D → point C → point B → point A).
If the structure is such that it can be added, the unwound thread or the upper cylinder 22
There is no slack in reaching. In particular, in the case of a compound yarn in which yarns made of different materials are combined and the elongations of the yarns are different from each other, when the yarns start to loosen due to the influence of a balloon or the like, the two yarns are separated and cause twist unevenness. However, after the yarn is unwound from the yarn supplying package P, the compound yarn is not separated by sequentially applying tension before reaching the upper cylinder. When a predetermined tension can be applied from point D → point C → point B → point A, the tension device 15 is not necessary.
Therefore, in order not to operate the tension device 15,
The capsule is pulled out.

When the double twisting machine having the above-mentioned structure is applied to the double twisting method of the yarn supplying package P in which the compound yarns having different elongations are wound, its advantages become clear. Since the yarns have different elongations, the yarns forming the compound yarn may be separated due to the burrn from the yarn supplying package P to the cylindrical body, and one yarn may be loosened. When such looseness occurs, it becomes easy to cross the upper end surface of the yarn supplying package P. However, due to the first yarn guide portion 53 of the fryer 50,
In addition to unwinding the compound yarn toward the position (point D) within the width of the yarn supplying package P, the first, second and third yarn guide portions 53, 54, 55 of the flyer 50 further
The tension is sequentially applied to the upper tubular body 22 so that the loosening is less likely to occur. Therefore, even in the case of a double-twisted yarn, which is a composite yarn of yarns having different elongations, uneven twisting and yarn breakage hardly occur.

Next, another embodiment will be described with reference to FIG. The difference from FIG. 1 is that the second yarn guide portion is omitted and only the first yarn guide portion 53 and the third yarn guide portion 55 are provided. In this case, the yarn from the first yarn guide portion 53 to the third yarn guide portion 55 tends to have the shortest distance, and thus tends to have the yarn path indicated by a in the figure. Therefore,
The vertical arm 60 and the diagonal arm 59 have a long hole 64 formed therein, and the thread passes through the space of the long hole 64. Since the winding diameter is large when the yarn supply package P starts to be unwound, the yarn from the first yarn guide portion 53 to the third yarn guide portion 55 hits the end of the yarn supply package P like the yarn path of b. However, there is no problem because the yarn path b is bent to some extent.

When the yarn is thick and is not easily influenced by the balloon, the yarn guide portion from the first yarn guide portion 53 to the upper cylindrical body 22 can be omitted. For example, 150
For denier or more, the one in FIG. 3 or the one in which the third yarn guide portion 53 is further omitted can be used. However, since the tension applied to the yarn is insufficient, the tension device 15
The capsule 32 is operated so that a predetermined tension is applied as the thread passes through the capsule 32.

[0024]

As described above, the invention according to claim 1 of the present invention uses the flyer for unwinding the yarn from the yarn guide facing the side surface of the yarn supplying package.
The unwound yarn does not traverse the package end face, and twist unevenness and yarn breakage due to the yarn traversing at the package end face can be prevented.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the yarn up to the unwound rear cylinder is not loosened, the yarn balloon is suppressed, A textured yarn of stable quality can be obtained.

According to the third aspect of the present invention, when the double twisted textured yarn is obtained from the yarn supplying package in which the compound yarns of different elongations are wound, the double twisted yarns are combined toward the position within the width of the yarn supplying package. Since the yarn is unwound and guided to the tubular body while applying tension by the flyer, slack in the compound yarn is unlikely to occur,
Since it does not traverse the package end face, it is possible to prevent twist unevenness and yarn breakage in the compound yarn that frequently occurs by the normal double twisting method.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a double twisting machine of the present invention.

FIG. 2 is a diagram showing a fryer.

FIG. 3 is a sectional view of another double twisting machine of the present invention.

FIG. 4 is a cross-sectional view of a conventional double twisting machine.

FIG. 5 is a top view of a conventional fryer.

[Explanation of symbols]

 7 Rotating Disc 9 Stationary Plate 22 Upper Cylindrical Body (Cylinder) 50 Flyer 53 First Thread Guide (First Thread Guide) 54 Second Thread Guide 55 Third Thread Guide

Claims (3)

[Claims] 1. A yarn feeding package is placed on a stationary platen, and the yarn is unwound from the yarn feeding package via a flyer rotatable around a cylindrical body provided upright at the center of the yarn feeding package,
The unwound yarn is guided from the cylindrical body to the rotating disc disposed under the stationary plate, the yarn is guided along the rotating disc, and twisted twice in the process of guiding the yarn to the upper balloon guide. A double twisting machine, wherein the flyer has a first yarn guide portion at a position facing a side surface of the yarn supplying package. 2. The double twisting machine according to claim 1, wherein the flyer has one or more yarn guide portions from the first yarn guide to the tubular body. 3. A yarn supplying package, in which a yarn having different elongations is wound, is unwound by a flyer that rotates around the yarn supplying package, and the untwisted compound yarn is fed. Lead to a cylindrical body standing upright in the center of the
A double-twisting method of twisting twice in the process of guiding the compounding yarn to the upper balloon guide, wherein the compounding yarn is unwound toward a position within the width of the yarn supplying package by the flyer, and the flyer is used. A double-twisting method, characterized in that it is guided to the tubular body while applying tension.