Fiber-splitting primary silk spinning assembly for initiatively distributing melts

Abstract

The invention discloses a fiber-splitting primary silk spinning assembly for initiatively distributing melts. The fiber-splitting primary silk spinning assembly comprises a shell, an upper cover, a separation piece, a distribution cup, a melt uniform-pressing plate and a spinneret plate, wherein the upper cover is located at the upper part in the shell, the melt uniform-pressing plate and the spinneret plate are sequentially arranged at the lower part of the distribution cup, the separation piece is located between the upper cover and the distribution cup, a spinneret hole consisting of spinneret guiding holes and spinneret capillary pores is formed in the spinneret plate, and a first filtering net, a flow guiding plate, a filtering sand layer and a second filtering net are sequentially arranged in the distribution cup from top to bottom. By arranging the uniform-pressing plate with upper cone holes and lower thin holes, the pressure uniformity and the heat dispersion uniformity of themelts entering guiding holes of the spinneret plates are guaranteed, so that the ejected primary silks are uniformized in the further traction, orientation and crystallization processes, and the yarnlevelness and dyeing uniformity of fibers are improved.

Description

technical field [0001] The invention relates to the technical field of chemical fiber spinning, more specifically, it relates to a spinning assembly for actively distributing the molten melt of the split parent filament. Background technique [0002] As decorative textiles, wedding dresses, curtains, shoes, hats, and clothing produced by chemical fiber monofilaments such as polyester monofilaments and nylon monofilaments are more and more widely used in our daily life, the demand for monofilaments continues to increase. growth of. Among them, 20D-50D polyester monofilament has high environmental protection performance and is the basic raw material for the production of mesh fabrics such as shoes and luggage, with a very broad market prospect. However, as these products are more and more applied in the daily civilian field, the requirements for product quality are getting higher and higher, especially the requirements for evenness of evenness and dyeing uniformity are gettin...

AI Technical Summary

Problems solved by technology

However, the cost and processing efficiency of the two-step method are not as good as those of the one-step method. In terms of quality, the existing spinning technology, the fiber evenness that can be achieved by the one-step method is about CV1.5%, while the two-step method can achieve The achieved fiber linear density can be reduced to about 0.8%. If the one-step method can be used to achieve the evenness that can be achieved by the two-step method, the production cost can be effectively reduced and the production efficiency can be improved.

[0007] The high polymer in the molten state in the spinning assembly, once impurities exist, spinning breakage often occurs during the stretching process, which affects the further reduction of the fiber linear density; secondly, and the most important reason, in the spinning assembly The high polymer in the molten state, the temperature distribution is uneven, causing the polymer in the high polymer to crystallize in some places with lower temperature, making the high polymer crystal grain distribution in the molten state uneven, making the fiber evenness And the dyeing performance can not meet the requirements; finally, due to the huge difference between the external temperature of the spinning assembly and the internal temperature of the spinning assembly, the polymer in the molten state is often in a crystallized state when it is extruded from the spinneret and exposed to the external low temperature. The uneven distribution at the beginning directly affects the subsequent crystallization process and pulling state

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