JP2002527322A - Spandex winder - Google Patents

Abstract

(57) [Summary] A winder device for winding a spandex through an independent thread line for a stacked winder is provided. The device comprises means for independently directing the first plurality of spandex yarns (4A) to the upper winder (3A) and the second plurality of spandex yarns (4B) to the lower winder (3B). The first and second pluralities of thread lines are in an alternate relationship with each other, and each of the cores (1A) attached to the upper winder is separated from the corresponding core (1B) attached to the lower winder. It is staggered in the axial direction by about の of the core length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Field of the Invention]

The present invention relates to a winding device for spandex, and more particularly to a winding arrangement for providing independent thread lines for such winders stacked on each other.

[0002]

[Description of Background Art]

U.S. Pat. No. 4,417,700 discloses an arrangement for winding yarn on tubes wherein each tube is individually mounted on a spindle and requires a plurality of corresponding spindles having different lengths for winding a plurality of yarns. Disclosed are the sequences described above. However, this device is unacceptably tall and very expensive to wind up many small packages, typically for spandex, as each package is wound on its own spindle . A spandex winder as disclosed in US Pat. No. 3,165,274 can be stacked directly on another winder. The combined spandex yarns for both the upper and lower winders are better than splitting the yarns so that one yarn is directed to the contact roll of the upper winder and the other is directed to the lateral guide of the lower winder. Previously, it can be guided via the guides of the upper winder and via the traversing guides for the upper winder. The spandex is then wound on a tube core to form a package. However, this arrangement results in spandex breaks and loss of continuity in the spinning operation, resulting in additional cost.

[0003]

Summary of the Invention

The apparatus of the present invention for winding spandex comprises a spandex winder having means for independently directing a first plurality of spandex yarns to an upper winder and a second plurality of spandex yarns to a lower winder. An apparatus for laterally moving each of the winders to traverse the spandex along a rotatable contact roll, and a plurality of rollers capable of winding the spandex up in contact with the contact roll at an outer periphery thereof. A spindle for rotatably supporting the tube core of the first and second pipes, wherein the first and second pluralities of thread lines are in an alternate relationship with each other, and each of the cores attached to the upper winder has a lower end. It is displaced in the axial direction from the corresponding pipe core attached to the winder by about の of the length of the pipe core.

[0004] The method of the present invention for winding spandex comprises: directing a first plurality of spandex yarns to an upper winder; and a first first plurality of yarns rotatably mounted on the upper winder.
And a second plurality of spandex yarns directed to the lower winder, and a second plurality of yarns rotatably mounted on the lower winder.
The first and second pluralities of thread lines are in an alternate relationship with each other, and each of the cores attached to the upper winder is attached to the lower winder. Is displaced in the axial direction from the corresponding pipe core by about の of the length of the pipe core.

[0005] A spandex package made in this manner is also provided.

[0006]

[Detailed description]

Spandix is a man-made fiber that is a long-chain man-made elastomer composed of at least 85% by weight of segmented polyurethane with a fiber-forming substance. Artificial elastomers are generally made in a suitable solvent, such as dimethylacetamide, to form a spinning solution that is extruded through a capillary of a spinneret and into a heated column to remove the solvent. The obtained spandex is wound on a tube core by a winder at the bottom of the column.

The space at the bottom of a spinning column is usually very limited, and it is difficult to use this space efficiently while maintaining high productivity and high package quality. Stacking another winder on top of the winder saves space and can result in increased productivity and final package quality without a significant loss in space efficiency. The use of the arrangement of the present invention also results in reduced cutting during the spinning operation. The apparatus of the present invention allows the hoisting tension to be reduced by up to 50%, thereby reducing the compression that occurs in the package and making it easier to remove the spandex during use.

The means for directing the yarn lines to the upper and lower winders may be a plurality of fixed guides as shown in FIG. The tube core of FIG. 1 is shown with some spandex 1c already wound thereon.

Referring first to FIG. 1A, a winder device is shown from the side. The core 1a attached to the spindle 2a of the upper winder 3a is different from the corresponding core 1b attached to the spindle 2b of the lower winder 3b in the axial position.
The amount of this discrepancy is about one-half the length of the tube core. In this case, the winders are aligned vertically and the stagger of the tube core is provided by a spindle 2b which is longer than the spindle 2a. However, the same result can be obtained by using substantially equal lengths of tubing and staggering the winders 3a and 3b by an appropriate distance along the direction defined by the spindle axis. Any combination of these methods can be used to provide the required stagger of the tube core.

[0010] The upper contact roll 1 is provided in such a way that the tube core can make contact with a suitable contact roll at the outer periphery.
0a and the lower contact roll 10b are attached. As desired, the contact roll can be freely rotated and the spindle driven, or the spindle can be freely rotated and the contact roll driven.

The first upper guide is not shown in FIG. 1A. A plurality of second lower guides are indicated by 5a, and a plurality of second lower guides are indicated by 5b. The lower guide 5b is preferably of a self threading type. Optionally, "upper and lower winders" can be provided with "flipper bars" to redirect the thread line away from the lateral movement guide to facilitate threading.

FIG. 1A shows eight thread lines 4 corresponding to a total of eight pipe cores in this figure. The first upper guide directs the first plurality of thread lines 4a to the upper winder 3a so as to be wound on the upper core 1a. The second upper guide 5a and the lower guide 5b pass through a horizontal moving assembly (not shown) of the upper winder 3a in order to wind the second plurality of thread lines 4b on the lower tube core 1b. Turn to the lower winder 3b. The first and second plurality of thread lines are in an alternate relationship with each other.

FIG. 1 b is a plan view of the device of the present invention. A plurality of first upper guides 6a move the first plurality of thread lines 4a to an upper lateral moving assembly 7a having a lateral moving guide 15a.
, The guide traverses the thread line across the contact roll 10a, and this roll passes the thread line through the tube core 1a. Similarly, the second upper guide 5a directs every other thread line to the lower guide, where it is traversed by the lower traverse assembly,
After passing around the contact roll 10b, it is finally wound on the tube core 1b. These thread lines, the lower guide and the lower traverse assembly are not visible in this plan view.

FIG. 1C is a front view of a stacked pair of winders 3a and 3b of the present apparatus. The first plurality of thread lines 4a are moved by the first upper guide 6a to the lateral movement guide 1.
5a is directed to the upper lateral moving assembly 7a. Next, the yarn wire passes around the contact roll 10a and is wound on the tube core 1a. The second plurality of thread lines 4b are directed by the second upper guide 5a to the lower guide 5b, which guides this thread line
It is directed to the lower horizontal moving assembly 7b having the lateral moving guide 15b. The yarn wire passes around the contact roll 10b and is wound on the tube core 1b.

[0015] All guides can be fixed, but for the second upper guide 5a,
Advantageously, it can be retracted to minimize tangling of the thread lines 4a and 4b in the second upper guide during threading. As shown in FIG. 2, this is achieved by attaching each of the second upper guides 5a to a (for example steel) spring strip which forces from the first threading position to the second winding position. be able to.

FIG. 2A shows the first upper guide 6 a and the second upper guide 5 a in more detail in plan view. In this drawing, the guide 5a is at the retracted threading position and is substantially aligned with the guide 6a. In FIG. 2B, the guide 5a is attached to the handlebar 1
It is in an operating position where it is forced out of alignment with the guide 6a by a pillar 11 mounted on 2. The handle of the bar is turned to rotate the bar and press the column against the steel spring strip 13. FIG. 2C shows the spring strip 13.
5 shows the first and second upper guides as viewed from the front of the apparatus in an operating position in which the second upper guide 5a attached to the device is forced to move away from the first upper guide 6a. The pillar 11 is concealed by the handle of the bar 12 turned into the driving position. The strip 13 is fixed to the support 14 at one end. In this figure, an optional guide 6aa is also shown. The use of these guides improves the shape of the wound spandex package.

Although four pipe cores are shown in the drawing for each spindle, an appropriate number, for example, eight
Individual, 12, 16, 18, 21, 24, etc. tube cores can be used.

The lateral movement assemblies 7a and 7b each include a cam box, a cylindrical grooved cam rotatably mounted in the box, a cam follower slidably mounted in the groove, and a box. A pair of rails fixedly mounted therein, and a lateral movement guide 15 mounted on the cam follower and slidably positioned between the rails.

[Brief description of the drawings]

1A, 1B and 1C show a side view, a plan view and a front view, respectively, of the device of the invention.

FIGS. 2A and 2B are plan views of first and second upper guides, respectively, of the present apparatus.

FIG. 2C shows a side view of the upper guide.

Claims (7)

[Claims] 1. A spandex winder comprising means for independently directing a first plurality of spandex yarns to an upper winder and a second plurality of spandex yarns to a lower winder, wherein A lateral movement assembly for laterally moving the spandex along a rotatable contact roll; and a rotatably supporting a plurality of pipe cores that are in contact with the contact roll at an outer periphery and can wind the spandex thereon. A first and a second plurality of thread lines are in an alternate relationship with each other, and each of the cores attached to the upper winder is axially separated from a corresponding core attached to the lower winder. Apparatus characterized by being displaced by about 1/2 of the length of the tube core. 2. The apparatus of claim 1, wherein the displacement of the core is achieved by an upper winder spindle having a length difference from a length of the lower winder spindle. 3. The method according to claim 1, wherein each spindle has an axis, the axis defining the direction of the winder, and the displacement of the core being achieved by an upper winder offset from the lower winder along this direction. Equipment. 4. An upper winder comprising: a plurality of first upper guides for directing the first plurality of thread lines to a laterally moving assembly of the upper winder; and a second plurality of thread lines of the upper winder. 2. The apparatus of claim 1 further comprising a plurality of second upper guides for directing thread lines past the traverse assembly to a plurality of lower guides for directing the lower winder to the traverse assembly. 5. The apparatus of claim 4, wherein the second upper guide is retractable and the lower guide is self-threading. 6. A first plurality of spandex yarns are directed toward the upper winder, and the first plurality of yarns are rotatably attached to the upper winder.
And a second plurality of spandex yarns directed to the lower winder, and a second plurality of yarns rotatably mounted on the lower winder.
The first and second pluralities of thread lines are in an alternate relationship with each other, and each of the cores attached to the upper winder is attached to the lower winder. And displaced in the axial direction by about 1/2 of the length of the core from the corresponding core. 7. A rolled spandex package made by the method of claim 6.