JPH07157194A - High speed takeup method - Google Patents

Abstract

PURPOSE:To moderate the shock at the time of pressure contacting and establish a smoothly winding operation by starting the high-speed winding on a metal bobbin in the condition that a metal roller for pressure contacting is separated previously, and putting the metal roller in pressure contact at the time the yan being wound has formed a thin yarn layer. CONSTITUTION:To wind a yarn on a metal bobbin 2 at a high speed (for example, over 3000m/min), a metal roller 3 is separated from empty metal bobbin 2 set on a spindle 1, and winding of a spun yarn Y from molten material on this bobbin 2 is started while the yarn is traversed in receiprocation in the bobbibn axial direcion. The metal roller 3 separated is driven by a drive motive and left for approach running to surface velocity almost the same as the metal bobbin 2. When a thin yarn layer 4a is formed on the metal bobbin 2, the metal roller 3 is put in pressure contact with this yarn layer 4a, which should be transferred directly to regular operation of yarn winding. This enables shock relieving with the yarn layer 4a when the metal roller 3 is put in pressure contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a melt spun yarn on a metal bobbin at a high speed of 3,000 m / min or more.

[0002]

2. Description of the Related Art Conventionally, a paper tube is often used as a bobbin for winding a melt spun yarn. In the package in which the yarn is wound around the paper tube, when the yarn is shipped to the user and the yarn is consumed, the used paper tube is often discarded without being collected and reused. . However, discarding a large amount of paper tubes in this way has become a problem not only from the viewpoint of cost of paper tubes but also from the viewpoint of global environmental protection and industrial waste recently. Therefore, as a countermeasure for this, technical studies have begun on the possibility of using a recyclable metal bobbin instead of the paper tube.

However, when a metal bobbin is used for winding a melt-spun yarn at a high speed of 3,000 m / min or more, the following technical problems occur at the start of winding, so that the current situation is as follows. It is in a situation where it cannot be used. That is, in a high-speed winding device for melt-spun yarn, a metal roller is brought into contact with the surface of the yarn layer in order to prevent the yarn layer from falling and collapsing during winding.
Therefore, when a metal bobbin is used, when the metal roller for contact pressure comes into contact with the hard metal bobbin that rotates at an ultra-high speed at the start of winding, extremely large impact noise and vibration are generated to damage the winding device. It ends up.

As a measure against the above, for example, the actual development Sho-60-11
As described in Japanese Patent No. 4165, a ring-shaped elastic body made of rubber, plastic or the like is attached to an end portion of a metal bobbin,
It is possible to reduce the impact of the metal roller contact pressure at the start of winding. However, in the winding which rotates at an ultra-high speed of 3,000 m / min or more, it is worn or damaged due to contact with the ring-shaped elastic metal roller, and reuse becomes almost impossible. Therefore, it is virtually impossible to use the metal bobbin instead of the paper tube unless such a problem is solved.

[0005]

The objects of the present invention are as follows:
It is an object of the present invention to provide a high-speed winding method that solves the above problems in high-speed winding of 000 m / min or more and enables winding with a metal bobbin.

[0006]

According to the present invention for achieving the above object, when a melt spun yarn is wound at a high speed of 3,000 m / min or more while contacting a metal roller with a yarn layer surface on a metal bobbin. At the start of winding, the winding is started in a state where the metal roller is separated from the metal bobbin, the metal roller in the separated state is preliminarily rotated in advance by positive drive, and then thin on the metal bobbin. When the thread layer is formed, the metal roller is brought into contact with the thread layer to shift the winding to the regular winding.

In this way, at the start of winding, the metal roller for contact pressure is not contacted with pressure and the winding is started on the metal bobbin. On the other hand, the metal roller is positively driven so as to be run in advance. , When the thin thread layer is formed on the metal bobbin, the pressure is applied to the metal roller rotated in the run-up direction, so the thin thread layer reduces the impact when the metal roller is in contact with the metal roller, and enables smooth winding start. .

In addition, the thread layer on the metal bobbin is brought into contact with a metal roller which has been preliminarily rotated in advance, so that the frictional resistance to the thread layer at the time of the contact pressure is made small, and damage and breakage of the thread are eliminated and the quality is improved. It is possible to prevent the occurrence of abnormality. In addition,
In the present invention, the "metal bobbin" is, of course, one formed only of metal such as aluminum or its alloy, but is not limited to this as long as the main body of the cylindrical body is formed of metal, for example, The thread grip ring at the end may be combined with an auxiliary component made of another material such as plastic.

The present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic view of an apparatus for carrying out the winding method of the present invention. A spindle 1 is adapted to be rotationally driven by a drive source (not shown), and a metal bobbin 2 is mounted on the spindle 1. The melt spun yarn Y forms a yarn layer 4 by being wound around the metal bobbin 2 rotating with the spindle 1 at a high speed of 3,000 m / min or more while being reciprocally traversed in the bobbin axial direction. During this winding, the metal roller 3 is constantly in contact with the surface of the yarn layer 4 so that the yarn layer 4 does not drop or collapse.

With the above structure, in the winding device used in the present invention, the metal roller 3 is positively driven by a drive source (not shown), and the metal roller 3 is driven at a high speed of 3,000 m / min or more. When the bobbin 2 is wound, an operation as outlined in FIG. 2 is performed at the start of the winding.
As shown in the schematic diagram of FIG. 2, when the ultra-high-speed winding of 3,000 m / min or more is started, the metal roller 3 is first separated from the empty metal bobbin 2 on the spindle 1 as shown by the solid line. Then, winding is started while the melt spun yarn Y is reciprocally traversed in the bobbin axial direction on the metal bobbin 2. On the other hand, the metal roller 3 in the separated state is preliminarily driven by a drive source (not shown) to be run-up rotated to a surface speed substantially the same as that of the metal bobbin 2.

Next, when the thread layer 4a having the thin thickness t ₁ is formed on the metal bobbin 2, the metal roller 3 which has been preliminarily rotated in advance as described above is chained to the thin thread layer 4a. The contact pressure is applied as shown, and the process proceeds to the regular winding thereafter. Since the metal roller 3 is brought into contact with the thread layer 4a after the thin thread layer 4a is formed in this manner, the impact when the metal roller 3 comes into contact with the metal roller 3 is absorbed and relaxed by the thin thread layer 4a. That is, the impact when the metals of the metal bobbin 2 and the metal roller 3 come into contact with each other at an ultra-high speed is mitigated as at the time of starting the winding generally performed, so that the smooth winding can be started. is there.

Further, since the metal roller 3 is preliminarily rotated in advance so as to be approximately equal to the surface speed of the thread layer 4a by positive drive, friction resistance when the metal roller 3 is brought into contact with the thread layer 4a is reduced, It is possible to prevent the occurrence of quality abnormalities such as yarn damage and yarn breakage. In the present invention, the time when the metal roller 3 is brought into contact with the metal bobbin 2 side may be selected when the thickness t ₁ of the thin thread layer 4a becomes a size that exerts the above-mentioned cushioning effect.
When the thickness t ₁ of the yarn layer 4a grows large while the pressure is not applied to the yarn layer, the yarn is dropped from the yarn layer and the winding shape is deteriorated. Therefore, the thickness t ₁ of the thread layer 4a is 0.
The range is 5 to 3 mm, more preferably 1 to 2 mm.

In FIG. 2, the thickness t ₁ of the thread layer 4a is exaggeratedly enlarged for easy understanding.
The winding method of the present invention is, as described above, 3,000 m /
It is applied when winding a yarn for more than a minute, and the upper limit of the winding speed is not particularly limited, but in practice it is 7,000 m /
It is applicable to winding up to minutes.

[0014]

As described above, according to the winding method of the present invention, at the start of high-speed winding of 3,000 m / min, the metal bobbin is wound on the metal bobbin while the metal roller for contact pressure is separated in advance. Then, since the winding roller is brought into contact pressure with the metal roller when a thin thread layer is formed,
The yarn layer absorbs the impact at the time of contact pressure and enables smooth start of winding.

Further, since the metal roller is preliminarily run in advance and the run-up rotated metal roller is brought into contact with the thread layer on the metal bobbin, the frictional resistance to the thread layer at the time of the contact pressure is reduced, and the thread It is possible to prevent the occurrence of quality abnormalities such as damage and yarn breakage.

[Brief description of drawings]

FIG. 1 is a schematic view of a winding device for carrying out the present invention.

FIG. 2 is an explanatory view showing the outline of the winding method of the present invention.

[Explanation of symbols]

 1 Spindle 2 Metal bobbin 3 Metal roller 4 Thread layer 4a Thin thread layer Y Thread

Claims (2)

[Claims] 1. When the melt-spun yarn is wound on the surface of a yarn layer on a metal bobbin at a high speed at 3,000 m / min or more while the metal roller is in contact with the surface, the metal roller is moved to the metal The winding is started in the state of being separated from the bobbin, and the metal roller in the separated state is preliminarily run in advance by positive drive, and then when a thin thread layer is formed on the metal bobbin, the metal layer is formed on the thread layer. A high-speed winding method in which the roller is pressed to move to regular winding. 2. The high-speed winding method according to claim 1, wherein the metal roller is brought into contact pressure when the thickness of the thin yarn layer is in the range of 0.5 to 3 mm.