JPS62167180A - High speed winding of multispindles - Google Patents

Abstract

PURPOSE:To reduce the difference of tension among threads and the defective convergence of them, by providing 2 or more guides between a final roller and traverse hooks and making the angled at which threads enter from the roller to a 1st guide equal to or less than a particular value so that a 2nd guide is used as a traversing fulcrum. CONSTITUTION:Threads Y1-Y4 supplied from a final roller 1 having a circum ferential speed greater than 3,000m/min is separated at a point P and the group of these threads are guided to the thread guides 3-6 of a 1st guide holder 2, respectively. An angle theta1 of the threads with respect to a perpendicular line to a roller shaft from the point P is formed and the angle theta1 is kept to a value equal to or less than 9 deg. as an entering angled. Next, the group of the threads Y1-Y4 are guided to the thread guides 8-11 of a 2nd guide holder 7 and the thread guides 8-11 serve as a traversing fulcrum for winding to packages. In addition, an angle of threads theta2 with respect to a perpendicular line of the guides 3-6 is formed. It is desirable that the angle theta2 is smaller although it does not effect the convergence of the threads, and the angle is equal or less than 20 deg. and preferably equal or less than 16 deg.. Then, respective threads are wound by packages 12-15.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for winding synthetic fiber yarn into cheese at high speed, and more specifically, at a high speed of 3000 m/min or more. This invention relates to a multi-spindle winding method with four or more spindles.

(Prior Art) Conventionally, when winding undrawn yarn, no guide was used between the final roller and the traverse footer, and the yarn separation point of the roller was used as the traversing fulcrum. This is because the winding speed was low and there were almost no problems with winding.

However, in recent years, a high-speed wine goo has been developed, and the speed of spinning synthetic fiber yarn has been increased, and along with this, direct spinning and high-speed spinning technology have progressed.

In this high-speed winding, if there are only one or two threads to be wound per winder, the angle θI (traverse angle) of entry into the winding groove from the thread separation point of the roller can be small, and there are almost no problems with winding. It did not occur.゛If we consider the case of one thread in particular, the point at which the thread separates from the roller is
It served as the central fulcrum for traversing, and it was sufficient to have at most one guide between the roller and the wine goo. However, in multi-yarn yarn winding, especially in multi-spindle winding with 4 or more spindles, in which 4 or more yarns are wound in one wine goose, the point at which the yarn leaves the roller cannot be used as the fulcrum for traversing, and a yarn guide is used. It is necessary to guide the thread by using the traversing point and set up a traversing fulcrum at the center point of the wine goo's traverse. In this case, if the angle θ3 at which the yarn enters the traverse support point and the roller yarn separation point is too large, the yarn separation point from the roller will become unstable due to the winding tension of the yarn. Conversely, in order to reduce θ, it is necessary to increase the distance from the roller to the traversing fulcrum, which has the disadvantage of being disadvantageous to the device. In particular, if a traverse length exceeding 12 times the traverse length can be obtained, the angle θ1 can be made relatively small and no major problems will occur.

(Objective of the Invention) An object of the present invention is to stabilize yarn separation on the final roller when winding four or more multi-filar threads at high speed, and to obtain a package with a good winding appearance.

Still another object of the present invention is to unify the winding tension between a plurality of threads to stabilize the winding.

(Structure of the Invention) According to the present invention, a multi-spindle winding system winds synthetic fiber yarn into 4 or more taps in a cheese shape at a speed of 3000 m/min or more, and a winding process from a final roller to a winding traverse footer is employed. In a winding method in which the traverse length is less than or equal to 12 times the traverse length, at least first and second guides are provided between the final roller and the traverse hook, with the A multi-spindle high-speed winding method is provided, which is characterized in that the yarn entry angle θ1 is maintained at 9 degrees or less, and further, the second guide is used as a fulcrum for traverse winding.

(Explanation with drawings) The present invention will be explained with reference to the drawings.

In Figure 1, the final 0-'y-1 (3000m/
Yarn Y1, which is fed and taken out from
Y2, Y3 and Y4 The yarn separates at point P on the roller. The yarn groups Y1, Y2, Y3 and Y4 are respectively guided by yarn guides 3.4.5.6 installed in the first guide holder 2. Here, from the point P, an angle θI (FIG. 2) of the yarn is formed with respect to the vertical line to the roller axis, and this θ is defined as the entry angle in the present invention. and,
In the present invention, this θ1 is set to 9° or less, especially the outer yarn Y1,
Y4 is intentionally held below 9°.

Next, the yarn groups Y9, Y2, Y3 and Y4 are connected to the second yarn guide 8.9.10 installed in the second guide holder 7.
．． 11, respectively. Thread guide here 8.
-11 serves as a traversing fulcrum for winding onto the puff cage.

Moreover, an angle θ2 of the thread is formed with respect to the vertical line from the first guides 3 to 6.

This angle θ2 has almost no effect on the convergence of the yarn.

However, in order to minimize the frictional force caused by the running of the yarn, it is desirable that the angle θ2 is small, and is preferably 20 degrees or less.
Preferably it is 16 degrees or less. Next, each yarn is wound into a package 12.13.14.15 (Function of the invention) The present invention is capable of winding four or more multifilaments of polyester, polyamide, etc. at a high speed of 3000 m/min or more. When winding around the same cheese, the yarn separation point from the final roller is stabilized to wind a package without defects such as loops without impairing the yarn convergence, and to reduce the yarn tension between the wound yarns. The objective is to obtain a package with a small difference (difference in winding tension) and a good winding shape. Winding speed 3000m/
If the speed is less than 1 minute, it is disadvantageous in terms of productivity and there is no practical advantage.If the speed is relatively low, the winding appearance of the package is good and there is almost no need for improvement regarding winding.

On the other hand, when winding at 3000 m/min or more with 4 or more combs, the entrance angle θ1 to the first guide can be set to 0 to 3 degrees for the inner filament YY and Y4, and the winding problem is solved. I hardly live there. However, the filamentous Y, , Y
, if the first thread guide 3.6 is not provided, the angle θ of entry into the first guide will become large. As a result, the yarn separation point P fluctuates, which results in fluctuations in the winding tension, resulting in poor convergence (loop) and poor winding appearance of the package.

FIG. 2 shows a model diagram in which the point at which the yarn separates from the roller becomes unstable. When θ1 exceeds 9 degrees, the tension of the thread causes the thread separation point P to move to P' and return to P, repeating the vibration.
This causes tension fluctuations and loops.

(Effects of the Invention) As described above, the present invention uses at least two yarn guides between the roller and the winding wine guide, thereby making it possible to reduce the difference in yarn tension between each yarn, and furthermore, to improve the concentration of the yarn. It can also prevent sexual defects. In particular, in order to make the angle θ less than 9 degrees with one thread guide, it is necessary to increase the distance between the roller and the wine goo, which is disadvantageous in terms of equipment, but the method of the present invention allows for a compact equipment. It becomes possible to do this.

(Example) The present invention will be explained below using examples.

The fineness of the winding yarn is 70 denier and the number of filaments is 34.
The yarn of f i 1 was wound by the method shown in FIG. 1 at the final roller speed shown in Table 1. The winding tension was adjusted by the winding speed and was set to approximately 6.5 g. The position of the first guide holder is installed 30 an below the yarn separation point of the final roller, and the entry angle θ to the first guide here (Fig. 2) is determined by the installation of the yarn guides 3 to 6 depending on the location. Changed.

Here, the loop is a single thread protruding from the package surface;
Those with a height of lf1 or more and a length of 2111 or more are counted, and 15 or more are considered defective. Further, the bulge amount was expressed as a value (fi) obtained by subtracting the traverse stroke length from the maximum winding width of the puff cage. A bulge amount of 10 m or more was judged as defective.

Furthermore, the winding tension was measured between the first guide holder and the second guide holder.

, (Next summer, blank space below) Table 1 (Note) Winding amount: 7 kg As shown in Table 1, when winding at low speed (2800 m/min), there is no first thread guide and θ is large. However, there are relatively few loops in the wound package. However, as shown in Comparative Example 2.4, when the speed increases, the point at which the yarn separates from the roller becomes unstable as shown in Figure 2, and the winding tension also fluctuates greatly, resulting in frequent loops. At the same time, the amount of bulge also increases.

In this respect, in Examples 1 and 2, when the first yarn guide is used and the swing angle θ1 is set to 8 degrees or less, the loop decreases and the bulge amount also decreases. However, in Comparative Example 3, even if the first guide is used, if the traverse angle θ1 is as large as 9.5 degrees, loops still occur frequently.

Embodiment 3.4 is an example in which the speed is further increased, but if the angle θ is made small, the occurrence of loops and bulges can be prevented, and a package with a good appearance when rolled can be obtained.

The high-speed winding method according to the present invention may be direct winding in which spinning is followed by stretching, or it may be a so-called POY method in which spinning is performed at high speed and then winding as is.

[Brief explanation of drawings]

FIG. 1 is a route diagram of the winding method of the present invention, and FIG. 2 is a model diagram showing the state in which the yarn is separated from the roller. 1... Final roller, Y+, Yz, Y:+, Y4 river... Yarn, 2...
...First thread guide holder, 3.4.5.6...
...First guide, 7...Second guide holder, 8.9.10.11...Second guide (JiJ
(i swing fulcrum), θ1... Angle of entry of the thread from the final roller to the first guide P... Thread separation point.

Claims (1)

[Claims] (1) A multi-spindle winding method that winds synthetic fiber yarn into 4 cups or more in a cheese shape at a speed of 3000 m/min or more, and the traverse length from the final roller to the winding traverse hook is 12 times the traverse length. In a winding method in which the winding speed is less than 9 times, at least first and second guides are provided between the final roller and the traverse hook, and in this case, the entrance angle θ_1 of the outer yarn entering the first guide from the final roller is 9.
A multi-spindle high-speed winding method characterized by maintaining the winding angle at or below the angle of rotation, and further using a second guide as a fulcrum for traversing the winding.