JPH01221509A - Yarn guard of blended yarn with heterogeneous shrinkage - Google Patents

Abstract

PURPOSE:To provide the title yarn guard so designed that when two kinds of yarns produced by spinning and drawing with two spindles of machines respectively are to be doubled and wound, the yarn guard in each spindle is made with an air sucker, whereas the yarn guard on the doubling section and winder with a water sucker, thereby ensuring the yarn guard to be performed. CONSTITUTION:When two kinds of yarns A, B produced by spinning and drawing with two spindles of machines respectively are to be doubled and wound, the yarn ground of the yarn B from the spinning section to the drawing section in the spindle B is carried out using an air sucker followed by delivering said yarn B to a water sucker. Thence, the yarn guard of the yarn A from the spinning section to the drawing section in the spindle A is carried out using an air sucker followed by delivering the yarn A to said water sucker. The both yarns A and B are then put to yarn guard on a yarn doubling section (e.g., an interlacing device) 20 and winders 21-23 while being suctioned into the water sucker.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for threading when producing a differentially shrinkable mixed fiber yarn using two adjacent spindles and drawing devices.

[Conventional technology]

In recent years, various methods have been proposed for continuously obtaining differentially contracted mixed fiber yarns using a single spinning and drawing device. For example, in the 1970s
Japanese Patent No. 32574 discloses that by using a device as shown in FIG. 7, different shrinkage mixed fiber yarns can be continuously obtained from the same die pack 50. That is, in this method, filaments discharged from the cap pack 50 are divided into two groups 51° and 51', one of the yarns 51 is superstretched, and then heat treated to form yarns having a predetermined water conduction shrinkage rate. A is obtained, and the other yarn 51' is drawn and heat treated to obtain a yarn B having smaller residual shrinkage than the yarn A. Then, the yarns A and B are guided 52
After passing the thread through and doubling, it is wound up into a package 53. When using such a device, it is not clear how the thread is threaded, but looking at the parts that are not specifically mentioned, the thread is threaded sequentially along the running route using an air sucker, as in the normal case. It is presumed that he is making a bet.

That is, threading along the running route to obtain yarn A is carried out using air sucker ■, threading is carried out along the running route to obtain thread B using air sucker ■, and from air sucker ■ to ■ or air sucker ■. It is presumed that one of the yarns is passed from to (■) and both yarns are combined and sucked into one air sucker, and in this state, the threading after the yarn doubling process is carried out.

In the embodiment disclosed in the above publication, the winding speed of the yarn is low, about 1000 to 1500 m/min, and at this speed, the yarn can be transferred sufficiently from air sucker to air sucker. it is conceivable that.

[Problem that the invention seeks to solve]

By the way, the present inventors divided the filaments discharged from the same nozzle pack into two groups and gave each group heat shrinkage characteristics under different conditions to obtain differentially shrinkable mixed fiber yarns. We have developed a method for manufacturing mixed fiber yarns with different shrinkage, in which the yarn obtained from the spindle bag of each spindle is given heat-shrinkage characteristics under different conditions using an attached device, and then the two yarns are combined and wound continuously. . In this way, by changing the type of molten polyester introduced into each spindle and the discharge conditions, a wide variety of combinations of differently shrinkable yarns can be created.

However, it has been found that there are points that need to be further improved in the manufacturing method of this new differentially shrinkable mixed fiber yarn. That is, when using the above device, threading is carried out from stage 4 Q OOm
It is preferable to set the winding speed to a high winding speed of /win or higher; however, if the winding speed is set at such a high speed, high tension is applied to the yarn. Even if you try to thread one of the threads, the suction force of the air sucker is weak and the thread cannot be passed properly, making it impossible to thread the thread into the winder.

Therefore, it is sometimes possible to adopt a method of threading by slowing down the rotation of each roll and gradually increasing the rotation.
If this method is adopted, production efficiency will deteriorate, so it is not a good idea. Therefore, it is desired to develop a method for threading that can sufficiently transfer the thread even under high-speed winding conditions of 4000 n/min or higher.

This invention was made in view of the above circumstances, and
The object of the present invention is to provide a method for threading a differentially shrinkable mixed fiber yarn that can be sufficiently passed even under high-speed winding conditions of 000 m/min or higher.

[Means for solving problems]

In order to achieve the above object, the method for threading a differentially shrinkable mixed fiber yarn of the present invention is such that when producing a differentially shrinkable mixed fiber yarn at high speed using two adjacent spinning and drawing devices, one of the yarns is spun and drawn. After threading the yarn from the spinning section to the drawing section of the device using an air sucker, the yarn is transferred to the water sucker, and then the yarn from the spinning section to the drawing section of the other spinning/drawing device is transferred. After threading the thread with an air sucker, the thread is also transferred to the water sucker and the two are doubled, and the threading at the thread winding section is carried out with the water sucker.

[Effect]

That is, according to the method for threading the differentially shrinkable blended yarn of the present invention, threading of each yarn A and B before doubling is carried out by a conventional air sucker, and then the yarn is sequentially passed to a water sucker. By carrying out threading after gold threading while both threads are combined and suctioned by a water sucker, threading can be carried out easily while maintaining the rotation of the roll at a high speed of 4000 n/win or more.

Next, the present invention will be explained in detail based on examples.

〔Example〕

FIG. 1 shows a spinning and drawing apparatus for producing differentially shrinkable mixed fiber yarn, which is the object of the present invention. This device is equipped with two spinning and drawing devices used in the conventional spindle type.
, a stretching section 2 , and a doubling and winding section 3 . Two adjacent spindles in the spinning section 1 are each equipped with a spinneret 5.
, 5a, cooling device 6.6a, oiling roll 7.7a
is provided. On the other hand, in the stretching section 2, four godet rollers 11, 12, 13, and 14 are arranged as shown in the figure. The first godet roller 11 located on the leftmost side in the figure takes over the yarn A discharged from the spinneret 5, and the third godet roller 13 takes over the yarn A discharged from the spinneret 5.
The yarn B discharged from a is taken up.

The yarn A taken up by the first godet roller is stretched while being wound around the second godet roller 12, passes over the fourth godet roller 14, and reaches the gold thread section 3. In addition, the third godet roller 13
The yarn B taken off is stretched while being wound around the fourth godet roller 14 to reach the yarn doubling section 3. In addition, Godet roller 11.12.13.14
have separate rolls lla and 1 in their vicinity, respectively.
2a, 13a, and 14a are provided, and the threads A and B are connected to godet rollers 11, 12, and 13°1 in each case.
4 and a separate crawl space 11a installed near it,
12a, 13a, and 14a are alternately run so that it can be wound multiple times between them.

In the doubling and winding section 3, 20 is an interlace nozzle, and the yarns A and B that have passed through the fourth godet roller 14 enter the second nozzle 20 in a state where they are overlapped one by one.
Here, the fibers are exposed to turbulence to form entanglements and become mixed yarns.

21 is a friction roller, and the mixed fiber yarn passing through the interlace nozzle 20 is transferred to the friction roller 21.
The package 22 is wound onto the bobbin 23 by the rotation of the package 22 .

Threading in the above-mentioned spinning and drawing apparatus can be performed, for example, as follows. That is, first, the above-mentioned device is operated to start spinning, and the yarn B that has fallen from the spinneret 5a of the spinning section 1 is sucked and held by the air sucker 30, and then
Separate roll 1 after hanging it on Godet roller 13
3a and the godet roller 13 alternately so that a predetermined number of turns are wound between the two. Next, this thread B is the fourth thread.
and the godet roller 14, and in the same manner as above, a predetermined number of turns are wound between the separate roll 14a and the godet roller 14. Then, the thread B is extended downward from the fourth godet roller 14 and transferred from the air sucker 30 to the water sucker 31. Next, the yarn A that has fallen from the spinneret 5 of the spinning section 1 is sucked and held by the air sucker 30', and then transferred to the first godet roller 11.
After that, it is applied alternately to the separate roller lla and the godet roller 11 so that a predetermined number of turns are wound between them. Next, this yarn is wound around the second godet roller 12, and wound a predetermined number of turns between the separate roll 12a and the godet roller 12 in the same manner as described above.

Then, this yarn A is stretched in the horizontal direction and passed over the fourth godet roller 14, and then stretched downward and transferred to the water sucker 31. In this manner, threading from the doubling yarn winding section 3 onward is performed with the two types of yarns being suctioned and held simultaneously by the water sucker 31.

The above-mentioned threading is schematically shown in FIGS. 2 to 5. FIG. 2 shows a state in which the yarn B is threaded with the air sucker 30. Then, by bringing the suction port of the water sucker 31 (indicated by the - dotted chain line) close to the yarn B held in the air sucker 30, the yarn B that has been sucked into the air sucker 30 is transferred to the water sucker 31. (Figure 3). This utilizes the characteristic that the suction force of the water sucker 31 is significantly larger than the suction force of the air sucker 30. Next, as shown in FIG. 4, the yarn A is threaded using an air sucker 30'. When the yarn A held by the air sucker 30' is brought into contact with the suction port of the water sucker 31 as shown by the arrow, the suction force of the water sucker 31 causes the yarn A to also be brought into contact with the water sucker 31. It is aspirated (Figure 5). Therefore, the above water sucker 31
At the suction port, yarn A and yarn B are held in a doubled state. In this state, threading is completed by passing the thread through the interlace nozzle 20 of the above-mentioned device (see FIG. 1) and winding it onto the bobbin 23. In the above embodiment, the same air suckers 30 and 30' may be used continuously, or the two air suckers may be used alternately.

The water sucker 31 used in the above embodiment is shown in FIG. In the figure, 40 is a suction nozzle, 41 is a high-pressure water injection hose, and its right end 41a is a water supply source (not shown).
connected to. The water flows as shown by the arrow in the figure, and the yarn is sucked in by the suction force of the water jet at the suction port 40a at the tip of the suction nozzle 40. The thread is suction port 4
The water is sucked into 0a, moved by the water, moves inside the hose 42, and enters a storage tank (not shown).

The water soccer 31 above is the air soccer 30.3.
It has the excellent property of being able to apply high tension to the yarn with low energy consumption compared to 0', and when the rotation speed of each roll of the device is maintained at a high speed of 4000 m/min or more, It is possible to easily transfer the yarn B from the air sucker 30 to the water sucker 31, and further transfer the yarn A from the air sucker 30 while the yarn B is being sucked. The suction nozzle 40 of the water sucker 31 used in the present invention is preferably made of a low-friction material.

〔Effect of the invention〕

As described above, according to the method for threading the differentially shrinkable mixed fiber yarn of the present invention, the rotational speed of each roll of the device is set at 4000 m/+
Since threading can be easily carried out while maintaining a high speed of 100 mm or higher, the yarn can be run at high speed from the threading stage, making it possible to efficiently produce differential shrinkage mixed fiber yarn. This effect is achieved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of a differential shrinkage mixed yarn manufacturing apparatus to which the present invention is applied, and FIGS. 2, 3, 4, and 5 are schematic diagrams illustrating the threading order of the present invention. explanatory diagram,
FIG. 6 is a plan view showing the configuration of a water sucker used in the present invention, and FIG. 7 is an explanatory diagram showing the configuration of a conventional differential shrinkage mixed yarn manufacturing apparatus. DESCRIPTION OF SYMBOLS 1... Spinning section 2... Stretching section 3... Doubling yarn winding section First godet roller...11 Second godet roller...12 Third godet roller...13 Fourth godet roller...・14 Air soccer...3
0.30' Water Soccer 31 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] (1) When producing differentially shrinkable mixed fiber yarn at high speed using two adjacent spinning/drawing devices, the yarns from the spinning section to the drawing section of one of the spinning/drawing devices are threaded using an air sucker. After that, the yarn is transferred to the water suction car, and then the yarn from the spinning section to the drawing section of the other spinning/drawing device is threaded using an air sucker, and then the yarn is transferred to the water suction car. Then tie the two together,
A method for threading a differentially shrinkable mixed fiber yarn, characterized in that threading in the doubling yarn winding section is carried out using the water sucker described above.