JP4733750B2 - Spandex winder - Google Patents

Description

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

  Patent Document 1 is an arrangement for winding a thread on a pipe, and each pipe is individually mounted on a spindle, and a plurality of corresponding spindles having different lengths for winding a plurality of threads are required. The above sequences are disclosed. However, this device is unacceptably tall and very expensive to roll up many small packages, typically for spandex, because each package is wound on its own spindle. Take it. A spandex winder as disclosed in Patent Document 2 can be directly stacked on another winder. The combined spandex yarn line for both the upper and lower winders splits the yarn line so that one yarn line is directed to the upper winder contact roll and the other yarn line is directed to the lower winder lateral movement guide. Before that, it can be guided through the guide of the upper winder and through the guide for lateral movement for the upper winder. The spandex is then wound onto the tube core to form a package. However, this arrangement results in spandex breakage, losing continuity of the spinning operation and further increasing costs.

U.S. Pat. No. 4,417,700 US Pat. No. 3,165,274

  The apparatus of the present invention for winding spandex comprises means for independently directing the first plurality of spandex yarn lines to the upper winder and the second plurality of spandex yarn lines to the lower winder. A spandex take-up device, wherein each winder traverses the spandex along a rotatable contact roll, and a transverse movement assembly, and the contact roll is in contact with the outer circumference, the spandex A spindle for rotatably supporting a plurality of tube cores that can be wound up, wherein the first and the second plurality of yarns are in an alternate relationship with each other and are attached to the upper winder Further, each tube core is displaced from the corresponding tube core attached to the lower winder by about ½ of the length of the tube core in the axial direction.

  The method of the present invention for winding spandex includes a first plurality of spandex yarn lines directed to an upper winder and a first plurality of yarn lines rotatably associated with the upper winder. A corresponding second plurality of windings wound on the plurality of tube cores, with the second plurality of spandex yarns directed to the lower winder and the second plurality of yarns rotatably attached to the lower winder Corresponding tubes including stages wound on a tube core, wherein the first and second plurality of yarns are in a mutually-relevant relationship, and each tube core attached to the upper winder is attached to the lower winder It is displaced from the core in the axial direction by about ½ of the length of the tube core.

  A spandex package made in this way is also provided.

Figure 2 shows a side view of the device of the present invention. Figure 2 shows a plan view of the device of the present invention. 1 shows a front view of the device of the present invention. It is a top view of the 1st upper guide of this apparatus. It is a top view of the 2nd upper guide of this apparatus. The side view of an upper guide is shown.

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

  The space at the bottom of the spinning column is usually very limited and it is difficult to efficiently use this space while maintaining high productivity and high package quality. By stacking another winder on the winder, space can be saved and productivity and final package quality can be improved without sacrificing space efficiency. The use of the arrangement of the present invention also results in reduced cutting during the spinning operation. The device of the present invention allows the winding tension to be reduced to 50%, thereby reducing the compression that occurs in the package and making it easier to remove during use of spandex.

  The means for directing the thread line to the upper and lower winders can 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, the winder device is shown from the side. The tube core 1a attached to the spindle 2a of the upper winder 3a has a different axial position from the corresponding tube core 1b attached to the spindle 2b of the lower winder 3b. The amount of this discrepancy is about 1/2 of the length of the tube core. In this case, the winder is aligned in the vertical direction and the misalignment of the tube core is provided by the spindle 2b which is longer than the spindle 2a. However, the same result can be obtained by using substantially the same length of core and staggering the winder 3a and the winder 3b by an appropriate distance along the direction defined by the spindle axis. Any suitable combination of these methods can be used to provide the required discrepancy in the tube core.

  The upper contact roll 10a and the lower contact roll 10b are attached in such a way that the tube core can contact the appropriate contact roll on the outer periphery. 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.

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

FIG. 1A shows eight yarn lines 4 corresponding to the total of eight pipe cores in this figure. The first upper guide directs the first plurality of yarn lines 4a to the upper winder 3a so as to be wound on the upper tube core 1a. The second upper guide 5a and the lower guide 5b pass through a lateral movement assembly (not shown) of the upper winder 3a to wind the second plurality of yarns 4b on the lower tube core 1b. Turn to the lower winder 3b. The first and second plurality of yarn lines are in a mutually alternate relationship.

  FIG. 1b is a plan view of the device of the present invention. The plurality of first upper guides 6a direct the first plurality of yarn lines 4a toward the upper lateral movement assembly 7a including the lateral movement guide 15a, and the guides cross the contact roll 10a to guide the yarn lines. The roll is moved sideways, and this roll passes the yarn line through the tube core 1a. Similarly, the second upper guide 5a is directed to the lower guide every other thread line, and is moved laterally by the lower lateral movement assembly, passes around the contact roll 10b, and finally the tube. It is wound on the core 1b. These thread lines, the lower guide and the lower lateral movement assembly are not seen in this plan view.

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

  All the guides can be fixed, but it is advantageous for the second upper guide 5a to be retractable in order to minimize the twisting of the yarn lines 4a and 4b in the second upper guide during threading. . As shown in FIG. 2, this is accomplished by attaching each of the second upper guides 5a to a spring strip (eg, steel) that forces it from the first threading position to the second winding position. be able to.

  FIG. 2A shows the first upper guide 6a and the second upper guide 5a in more detail in plan view. In this drawing, the guide 5a is in the retracted threading position and is substantially aligned with the guide 6a. In FIG. 2B, the guide 5a is in an operating position that is forced out of alignment with the guide 6a by a post 11 attached to the handlebar 12. 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 first and second upper guides as viewed from the front of the device in an operating position in which the second upper guide 5a attached to the spring strip 13 is forced away from the first upper guide 6a. . The column 11 is hidden by the handle of the bar 12 turned to the driving position. The strip 13 is fixed to the support 14 at one end. In this figure, a selectively added guide 6aa is also shown. Use of these guides improves the shape of the rolled spandex package.

  In the drawing, four tube cores are shown for each spindle, but any number of tube cores may be used, for example 8, 12, 16, 18, 21, 24, etc.

  Each of the laterally moving assemblies 7a and 7b includes a cam box, a cylindrical grooved cam that is rotatably mounted in the box, a cam follower that is slidably mounted in the groove, and is fixed in the box. A pair of rails attached and a lateral movement guide 15 attached to the cam follower and slidably placed between the rails.

Claims (1)

A spandex winding device 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,
An assembly for lateral movement for each winder to laterally move the spandex along a rotatable contact roll, and a plurality of cores that can be wound up on the spandex by being in contact with the contact roll on the outer periphery to be rotatable. A plurality of first and second plurality of yarns are in an alternate relationship with each other, and each tube core attached to the upper winder is axially moved from the corresponding tube core attached to the lower winder. Is displaced by half the length of the tube core,
The displacement of the tube core is offset from the lower winder along the winder direction defined by (a) the upper winder spindle having a length difference with respect to the lower winder spindle, and (b) the axis of each spindle. Achieved by an upper winder, or (a) and (b)
A plurality of first upper guides for directing the first plurality of yarn lines toward the assembly for lateral movement of the upper winder, and a second plurality of yarn lines for the assembly for lateral movement of the upper winder. And a plurality of second upper guides for directing the yarn line to a plurality of lower guides that direct the lower winder to the lateral movement assembly, wherein the second upper guide is out of alignment with the first upper guide. A device characterized in that it is disengaged and the second upper guide is retractable .

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