JPS61282263A - Pulling out of piled-up package thread - Google Patents

Abstract

PURPOSE:To smoothly and continuously pull out thread by forming a fluidic body layer by laying lightweight granular bodies having fluidity onto the package threads and pulling out the thread from between the granular body layer. CONSTITUTION:Since, before the pulling out of a thread 2, granular bodies 15a are laid over and on the periphery and in an inner hole of a can 4A so that package threads 11 are buried, the upper surface of the package thread 11 is pressed by the weight of the upper granular body layer 15, and provided with a prescribed tension. Since the thread 2 is pulled out from between the granular body layer 15, the thread in the lower layer which tends to be accompanied by the pulled-out thread 2 is squeezed by the granular body layer 15 having fluidity, and twist and intertwining are ravelled out, and the thread is left under the granular body layer 15 without being accompanied by the pulled-out thread 2, and the pulled-out thread 2 is smoothly pulled out.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for continuously pulling out donut-shaped package yarn deposited in a container from a state covered with a granular layer. .

[Conventional technology]

In wet spinning of various chemical fibers such as polyacrylonitrile, cellulose acetate, and polyamide, a polymer solution as a spinning stock solution is ejected from the pores of a nozzle into a coagulation bath that is water or a mixture of water and an organic solvent, and is then dehydrated and coagulated. The yarn as a product is formed through steps such as drying, stretching, etc., and the spun yarn is fed at a constant speed by rotation of rollers, etc., and then taken off with a bobbin or the like.

Conventionally, this type of yarn take-up device has a bobbin attached to the motor shaft of a torque motor or a shaft connected to the motor shaft for driving, and the thread is loaded onto the bobbin while maintaining a constant winding tension due to the characteristics of the torque motor. There are shaft-driven bobbin winding methods, surface-driven bobbin winding methods that bring the rotatable bobbin and rotating drum into pressure contact with each other to wind the thread onto the bobbin, or winding thread into the center of a high-speed rotating cage. A bot winding machine is used, which uses centrifugal force to swing the thread toward the inner wall of the cage and wind it without a core.

However, when taking the yarn by wet spinning as described above, the spinning speed is as low as 5 to 30 m/m1n, and at a speed of 50 m/m1 to avoid cutting the yarn having a diameter of about 0.1 to 2111 mm.
When it is necessary to take off with a low tension of less than g, stable taking off cannot be expected with the above-mentioned conventional taking off device. In other words, in shaft-driven bobbin winding, if you want to wind yarn into a large package yarn of 500 g or more for productivity and loss reduction, you will need a large horsepower torque motor, and the low-speed, It is difficult to adjust the tension to a low level, and thread breakage is likely to occur due to excessive tension. In addition, in a plane-driven bobbin winding machine, the thread and the winding citrus are always pressed together, so the thread is easily damaged. Furthermore, with pot winding machines, it is almost impossible to adjust the winding speed and tension when the thickness or number of yarns changes, making it difficult to obtain a winding shape that is suitable for various types of yarn.

As described above, in conventional yarn take-up devices, it was difficult to take off thin yarns produced by wet spinning at low speed and under low tension.

We have developed a new yarn take-off device, the schematic configuration of which is shown in Figure 3, which makes it possible to take off a large amount of yarn in a stable state with low tension, and have already applied for a patent. (Special application 1982-2014
No. 60) To explain this based on the figure, a take-up device 1 installed on the downstream side in the spinning direction of a spinning machine (not shown) has a plurality of pay-out rollers that pay out spun yarn 2 at a constant speed. 2
A bottomed cylindrical container (hereinafter referred to as a can 4 according to the common name) which is rotated by being driven by a motor or the like is disposed below the container 3. A traverse guide 5 that reciprocates between the solid line position and the chain line position in the figure is provided above the can 4, and below the can 4, a hollow shaft 6, which is the central axis, moves the can 4. A tank 1 for cleaning liquid is provided which communicates with the inside. Reference numeral 8 denotes a shower provided above the can 4, which is connected to the tank T by a pipe 9 equipped with a pump. The cleaning liquid 10 is configured to be ejected from the nozzle of the shower 8 and then circulated through a path including the can 4, the hollow shaft 6, the tank T, and the piping 9.

With this configuration, after spinning, the yarn 2 that is fed out at a constant speed by the feeding roller 3 falls into the can 4 due to its own weight, but since the can 4 is rotating,
Because the reciprocating traverse guide 5 guides the yarn 2, the falling yarn 2 is not traversed in the radial direction, so it stays inside the can 4 in the shape of a small diameter coreless donut. Deposited as package yarn. Since the cleaning liquid 1G is sprayed onto the pancage yarn by the shower 8, the internal solvent is extracted and the yarn is uniformly moistened with the cleaning liquid.

4 and 5 are plan views showing the state in which the yarn 2 is deposited while rotating the can 4 and reciprocating the traverse guide 5. FIG. Figure 5 shows the state after 20 rotations. As is clear from the figure, if the phase of both end positions of the reciprocating motion of the traverse guide 5 is slightly shifted in the circumferential direction every 4404 rotations of the tuff 3, the threads 2 can be piled up in a coreless donut shape without overlapping. A package yarn is formed.

After the threads 2 deposited in this manner are thoroughly washed or post-treated by an appropriate method, they are further heated to an appropriate temperature (0 to 20°C).
After drying at 0°C), the yarn can be wound in 5 rolls, or the yarn can be wound up one by one from the piled up packaged yarn. If so, switch the collection work to another adjacent collection device, and then
At the current position, rotate the thread in the opposite direction to untwist it, and then twist the
Alternatively, the accumulated package yarn is taken out of the machine used for deposition, fixed in a rotatable container of a separate device, and pulled out while rotating in the opposite direction, and then wound. The waste is deposited in a donut shape again or sent to a post-processing process.

[The problem that the invention attempts to solve]

However, when the yarn 2 is pulled out and wound from such accumulated package yarns, or when the yarn 2 is wound up one by one, the yarn 2 is pulled upward at a considerably high speed, and the yarn 2 must be washed. The thread 2 that has been drawn out is crimped due to shrinkage due to drying, so as shown in the perspective view of the thread being drawn out in Figure 6, the thread 2A in the lower layer becomes entangled with the thread 2 being drawn out, and the thread 2A is entrained. In some cases, five windings of yarn are taken up, resulting in increased yarn loss and reduced productivity due to accidental handling. There was a problem that it was blocked.

[Means for solving problems]

In order to solve these problems, in the present invention, granules are spread over the package yarn deposited in a donut shape in a container to form a granule layer, and the yarn is passed between the granules. I pulled it out and let it out.

[Effect]

The stacked threads are pressed to maintain a constant tension or less depending on the fluidity of the granules and the weight of the coated granule layer, and the drawing threads and the underlying threads that are about to be pulled out due to the looseness are fluidized. It is lightly squeezed with a lightweight granular material having a granular material to loosen twists and tangles, and is not pulled out along with the drawing thread, so it can be drawn out continuously.

〔Example〕

FIG. 1 is a schematic configuration diagram of a device for pulling out piled packaged yarn, shown to explain the method for pulling out piled packaged yarn according to the present invention, and FIG. 2 is a perspective view of a can similarly showing the yarn being pulled out. .

What is designated by the reference numeral 4A in FIG. 1 is the one in which the can 4 of the take-up device 1 explained in FIG. The cans 4A are driven by a motor or the like to a hollow shaft 6 in the take-up device 1.
It is fixed to a rotating shaft 12 that rotates in the opposite direction.

A pair of feed-out rollers 13 are mounted on a shaft above the can 4A, and a plurality of parallel rollers 14 are arranged in a staggered manner on the downstream side of the feed-out row 213. Then, the yarn 2 is pulled out from the packaged yarn 11 in the 4 cans by the rotation of the payout roller 13, and after the tension is adjusted by the parallel rows 214, it is heat treated in a heat treatment machine, for example, and wound up. Note that in the take-up device 1 shown in FIG. 3, if the speed at which the yarn 2 is fed out by the feeding row 23 is 8 meters and 7 minutes, and the number of rotations of the can 40 is N times/minute, the package yarn is In order to untwist the yarn in the drawing device shown in the figure, it is necessary to determine the feeding speed S8 meters/minute of the yarn 2 by the feeding roller 13 in FIG. There is a need.

In this device, the granules 1Sa are spread over the package yarn 11 to form the granule layer 15, and the granules 15a are also filled around the package yarn 11 and in the inner hole. There is. The material of the granules 15 is, for example, polyethylene or polypropylene.

Plastic pellets such as Teflon, polyacetal, and nylon, glass, pebbles, grains such as soybeans, adzuki beans, and rice, etc., can be used as long as they have a specific gravity of about 0.3 to 4, but preferably have a specific gravity of 0.7 to 4. It is preferably about 3.0. If the specific gravity is too high, such as with a metal ball, the tension will increase.
If the specific gravity is too low, the yarn 2 will be damaged, and if the specific gravity is too low, a large amount will be required, which is not preferable. In addition, if the diameter of the granules 15 is too large, the tension when pulled out will be irregular and unstable, and if it is close to powder, it will stick to the thread 2 due to static electricity. If obtained, it is preferably about 1 to 5 coriander diameters. The granular material 15 preferably has a spherical, cylindrical, or rice grain-like shape, and preferably has a smooth surface and fluidity. In addition, in the case of plastic pellets, pellets containing an antistatic material are preferable.

A method for drawing out yarn using the drawing device configured as described above will be explained. The can 4, in which the yarn 2 after spinning by the take-up device 1 shown in FIG. A can 4A is fixed to the rotating shaft 12 of the drawing device shown in FIG. Then, the yarn 2 is pulled out from the packaged yarn 11 and guided to, for example, a heat treatment machine via a payout roller 13 and a parallel roller 14. At this time, when the can 4A is rotated at the above-mentioned set speed in the opposite direction to the take-up device 1 shown in FIG. After that, it is heat treated in a heat treatment machine and wound onto other bobbins. In this case, prior to pulling out the yarn 2, the can 4A is filled with 15 m of granular material spread over and around the package yarn 11 and in the inner hole so that the package yarn 11 is buried. The granular layer 15 presses the upper surface of the package yarn 11 with its weight to maintain a predetermined tension thereon. Since the thread 2 is drawn out from between the granular layers 15, the two threads in the lower layer that are to be dragged along with the drawn thread 2rc are squeezed by the fluid granular layer 15, as shown in FIG. The twists, entanglements, etc. are loosened and remain under the granular layer 15 without being accompanied by the drawn-out thread 2, and the drawn-out thread 2 is smoothly drawn out. As a result of the experiment, conventional 5
There used to be accidents every 10 minutes, but there were no accidents even after 5 hours of continuous operation.

Note that if the granules 15& are filled in the annular space between the outer periphery of the packaged yarn 11 and the inner wall surface of the can 4A or in the inner hole of the packaged yarn 11, the yarn 2 is pulled out and the height of the packaged yarn 11 is increased. As the density decreases, the packed granules 15m collapse onto the package yarn 11, and the granule layer 150 above the package yarn 11 becomes thicker, resulting in a large load, which may be undesirable. It is desirable to fit a ring, a rod, etc. into the space to prevent the granular material 15 from being excessively filled.

In addition, in this embodiment, the drawer device shown in FIG. 1 is provided separately from the drawer device shown in FIG.
A shows an example of movement, and 9 shows that after the spinning system is taken up,
While the case 4 is attached to the hollow shaft 6, the yarn 2 may be drawn out by rotating the hollow shaft 6 and the feeding loaf 3t or a separately provided feeding roller at the predetermined speed.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, as a method for drawing out accumulated packaged yarn, lightweight granules having fluidity are spread over the packaged yarn deposited in a donut shape in a container. By forming a body layer and drawing out the thread from between this granular layer,
The stacked package yarn is pressed by the weight of the fluid granular material layer, thereby maintaining a predetermined tension, and the lower layer of yarn that is being pulled out along with the yarn being pulled out is swung by the granular material. Since the twists and tangles are loosened, the yarn is not pulled out along with the drawn yarn, and the yarn can be pulled out extremely smoothly and continuously, improving productivity and reducing loss. In addition to this, its practical application can be promoted by attaching it to a device for taking off spun yarn or the like.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a stacked package yarn drawing device shown to explain the method for drawing out stacked package yarn according to the present invention, and FIG. 2 is a perspective view of a can showing the yarn being pulled out. , Fig. 3 is a schematic configuration diagram of a yarn take-up device for spun yarn, Fig. 4 is a plan view showing the state of accumulation of yarn in the can after two rotations of the can in this yarn take-up device, and Fig. 5 6 is a plan view showing the same rotation angle of <20 times, and FIG. 6 is a perspective view of the can during thread drawing, shown for explaining the conventional method for drawing out the stacked package thread. 2... Yarn, 4A... Can, 11... Package yarn, 13... Payout roller, 15... Granular material layer, 15a... Grudge-like material.

Claims (1)

[Claims] A granule layer is formed by spreading granules on top of the package yarn deposited in a donut shape in a cylindrical container with a bottom.
A method for drawing out piled package yarn, which is characterized in that the yarn is drawn out from between the granular layers.