JPH04272065A - Method for taking up thread - Google Patents

Abstract

PURPOSE:To provide a thread taking-up method capable obtaining a coene- shaped package excellent in a spreading property, in the case of the thread taking-up method for bringing the cone-shaped package into rolling contact with a traversing drum in which a traversing groove is engraved. CONSTITUTION:In the case of a thread taking-up method in which a cone-shaped package is brought into rolling contact with a traversing drum 11 in a surface of which a traversing groove 22 is engraved, a deformation part, formed of a plurality of ring-shaped hollows 12 or the take, is provided in a surface of the traversing drum 11 to form a ring-shaped protrusion or the like by transferring the deformation part of the traversing drum 11 to a taking-up surface of the cone-shaped package. This ring-shaped protrusion or the like prevents contact between a thread during spreading and a package surface layer so as to prevent the upper thread from falling off.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is directed to a yarn winding method in which a cone-shaped package is rolled onto a traverse drum having traverse grooves carved on its surface. This invention relates to a method for winding yarn that yields.

0002

2. Description of the Related Art Cone-shaped packages are produced, for example, in a winding unit that winds yarn from a yarn feeding bobbin produced by a ring spinning machine while removing defective parts such as slabs and nep. First, the equipment arrangement of this winding unit will be explained with reference to FIG. winding unit 1
The yarn Y pulled out from the yarn feeding bobbin 4, which is fixed in position by the support tube 2 and the duct 3 and is supplied to a predetermined position of the unit, is removed by a balloon breaker 6, a tenser 7 that applies a predetermined tension, and a defective yarn. It passes through a slab catcher 8 and the like that detects the portion via guides 9 and 10, and is wound up into a cone-shaped package P that is rotated by a traversing drum 11. 15 is a yarn splicing device, 16 is a suction mouth that guides the yarn on the package side to the yarn splicing device 15, and 17 is a relay pipe that guides the yarn on the yarn supply bobbin side to the yarn splicing device 15. It has each of the above-mentioned members, and a large number of such winding units 1 are arranged in parallel to constitute one automatic winder. Note that various methods can be applied to supply the yarn feeding bobbin 4 to a predetermined position of the winding unit 1, but in FIG.
A type of winding unit is shown in which the winding unit is transported, supplied, wound, and discharged while the winding unit is inserted into the winding unit.

Next, a winding device using a traversing drum will be explained with reference to FIG. Fig. 7(a) is a front view, and Fig. 7(a) is a front view.
(b) is a side view. Reference numeral 11 denotes a traverse drum, on the surface of which a reciprocating helical traverse groove 22 is carved.
is guided by this traverse groove 22 and reciprocates. Reference numeral 23 designates a conical bobbin, on which the thread Y is wound to form a cone-shaped package P. A cradle arm 24 rotatably supports the bobbin 23, and one side 24A of the cradle arm is rotatable in the {circle around (2)} direction. Reference numeral 25 denotes a swinging arm, the tip of which is integrated with the cradle arm 24, and swings in the {circle around (2)} direction about a shaft 26 as the cone-shaped package P is formed.

A method of winding yarn using the traversing drum 11 described above will be explained. When the traverse drum 11 rotates, the yarn Y guided by the traverse groove 22 reciprocates. The cone-shaped package P that is in rolling contact with the traversing drum 11 rotates at a reference diameter at a point A approximately in the center in the axial direction, and the thread Y is wound around the conical bobbin 23 to form the cone-shaped package P.

[0005]

By the way, as shown in FIG. 6, the above-described cone-shaped package P is unwound toward the top guide 27 or the like of the double twisting machine with the small diameter portion facing upward. In this case, if the yarn Y1 is thick, the balloon becomes large and is smoothly unwound away from the package surface layer. However, if the yarn is thin Y2, the balloon will not expand, and the yarn will unravel while rubbing the surface layer of the package. At this time, since the yarn Y2 being unwound tries to pull up the yarn Y3 above, there is a problem that the so-called unwinding failure is likely to occur, in which the yarn Y3 slips out and yarn breakage occurs.

The present invention has been made in view of the problems of the prior art, and its purpose is to connect a cone-shaped package to a traverse drum having traverse grooves. An object of the present invention is to provide a yarn winding method that can obtain a cone-shaped package with excellent unwinding properties.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the yarn winding method of the present invention involves rolling a cone-shaped package into contact with a traversing drum having traverse grooves carved on its surface. In the winding method, a deformed part consisting of a plurality of ring-shaped depressions, etc. is provided on the surface of the traversing drum, and a ring-shaped protrusion, etc. is formed by transferring the deformed part of the traversing drum to the winding surface of the cone-shaped package. It is characterized by:

[0008]

[Function] Ring-shaped protrusions, etc., formed by transferring the deformed part of the traversing drum to the winding surface of the cone-shaped package prevent the yarn being unwound from coming into contact with the surface layer of the package, and prevent the upper yarn from coming out. prevent.

[0009]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a method for winding up a cone-shaped package, and FIG. 2 is a diagram showing a state in which the cone-shaped package is unrolled by the method of the present invention.

In FIG. 1, on the surface of the traversing drum 11,
This method differs from the conventional method in that in addition to the traverse grooves 22, seven ring-shaped depressions 12 are provided at approximately equal pitches. This ring-shaped recess 12 is a circular arc groove shallower than the traverse groove 22.
This is to the extent that it does not interfere with the traversing of the yarn in step 2. Alternatively, the radius of the arc of the ring-shaped depression 12 may be increased to such an extent that adjacent ring-shaped depressions 12 are connected to each other, thereby making the surface wavy. Note that the steps 29 at both ends of the traverse drum 11 are provided as necessary to create a gap between the traverse drum 11 and the bobbin 23 to prevent damage to the thread due to slippage at the beginning of winding. .

When a cone-shaped package is wound up with such a traversing drum 11, the package rolling in contact with the flat portion 11A receives sufficient contact pressure, but the ring-shaped recess 12
Packages that make contact at this point receive insufficient contact pressure. Therefore, the thread on the surface layer of the package has a ring-shaped depression 1.
Things start to get exciting at 2. When it is wound up to a certain extent,
Even the ring-shaped depression 12 receives sufficient contact pressure,
A ring-shaped protrusion 30 (see FIG. 2) having the ring-shaped depression 12 transferred thereto is formed on the package surface layer.

Next, the operation of the ring-shaped protrusion 30 formed on the surface layer of the package will be explained with reference to FIG. Thin thread Y2
When the balloon is unrolled, the balloon will not expand, so the thread Y2
is unwound along the package surface layer 28. However, since there is a ring-shaped protrusion 30, the thread Y2 is attached to the package surface layer 2.
8. It is unraveled in a floating state without rubbing. Although the thread of the ring-shaped protrusion 30 is rubbed, only a part of the upper thread Y3 is rubbed, and the thread Y3 does not come off. As a result, the cone-shaped package shown in Fig. 2 can be unwound without any yarn breakage, even under severe unwinding conditions where cone-shaped packages made using the conventional method often cause yarn breakage due to poor unwinding. Ta. In addition, the unwinding tension itself is approximately 1
It decreased by a percentage. Furthermore, ring-shaped protrusions 30 are regularly formed on the surface layer of the cone-shaped package, and the appearance is excellent. Furthermore, when the ring-shaped protrusion 30 is made wave-like, the protrusion itself becomes less noticeable.

FIGS. 3 to 5 show cone-shaped packages formed by other deformations in the traversing drum. In FIG. 3, the ring-shaped recess 1 of the traversing drum 11
There are two ring-shaped protrusions 2A and 12B, and ring-shaped protrusions 30 are formed on the small diameter side and the center of the cone-shaped package P. Figure 3 also shows that yarn breakage due to unwinding defects has been greatly reduced.
The effect of improving unwinding property can be expected.

In FIG. 4, the traverse drum 11 has a small diameter D1.
A step portion 13 is provided between the cone-shaped package P and the large diameter D2, and a step portion 31 is also formed in the cone-shaped package P so that the diameter decreases toward the small diameter side. The part that the unraveled yarn rubs against is divided into two parts, improving its disassembly and unraveling properties.

In FIG. 5, the traversing drum 11 has a medium-thick drum shape, and the cone-shaped package P has a medium-thin drum shape. The thread to be unwound is lifted from the surface layer of the package by the tip portion 32, and the part that the thread to be unwound rubs against is reduced, improving unwinding performance.

[0016]

Effects of the Invention The yarn winding method of the present invention involves rolling a cone-shaped package onto a traversing drum having traverse grooves carved on its surface. A deformed part consisting of a ring-shaped depression or the like is provided, and a ring-shaped protrusion or the like is formed by transferring the deformed part of the traverse drum onto the winding surface of the cone-shaped package. The ring-shaped protrusions on the package prevent the yarn being unwound from coming into contact with the surface layer of the package and prevent the upper yarn from being pulled in, so even if the yarn is thin, unwinding defects such as the upper yarn coming off will not occur. It is difficult to unwind, and there is no thread breakage, which improves unwinding performance.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a method for winding up a cone-shaped package.

FIG. 2 is a diagram showing a state in which a cone-shaped package is unrolled according to the method of the present invention.

FIG. 3 is a graph diagram showing another winding method of the present invention.

FIG. 4 is a graph diagram showing another winding method of the present invention.

FIG. 5 is a graph diagram showing another winding method of the present invention.

FIG. 6 is a diagram showing a state in which a cone-shaped package is unrolled according to a conventional method.

FIG. 7 is a diagram showing a winding unit to which the yarn winding method of the present invention is applied.

FIG. 8 is a diagram showing a yarn winding method using a traversing drum.

[Explanation of symbols]

11 Twill drum 12 Ring-shaped depression 30 Ring-shaped protrusion P Cone-shaped package

Claims (2)

[Claims] 1. A yarn winding method in which a cone-shaped package is rolled onto a traverse drum having a traverse groove cut on its surface, wherein a deformed portion is provided on the surface of the traverse drum, and the winding of the cone-shaped package is A method for winding yarn characterized by transferring this deformed portion onto the winding surface. 2. The yarn winding method according to claim 1, wherein the deformed portion on the traverse drum surface is a plurality of ring-shaped depressions.