Spinning assembly for polyester fibers and assembling device and method thereof

Abstract

The invention relates to a spinning assembly for polyester fibers and an assembling device and method thereof. The spinning assembly comprises an assembly body, and a fastening ring, a limiting pin, an upper cover, a sand cup sleeve piece, a spot welding net, a sealing gasket, a positioning pin I and a spinneret plate are sequentially arranged in the assembly body; the sand cup sleeve piece comprises a sand cup, and a pressing block, a sealing ring, a single-layer net, filter sand, an extrusion ring, an edge covering net sheet and a single-layer coarse net sheet which are sequentially arranged in the sand cup; a spring retainer ring is arranged between the fastening ring and the upper cover, and is buckled and pressed on the upper cover by the fastening ring; the spring retainer ring is in a C shape, and holes are formed in the inner sides of C-shaped openings respectively; and two concave cavities are formed in the outer bottom of the sand cup, bosses are arranged on the peripheries of the two concave cavities, and continuous grooves are formed in the upper surfaces of the bosses. According to the spinning assembly for the polyester fibers, an automatic integrated device capable of evenly stabilizing the internal pressure of the assembly is used in the assembly process, it is guaranteed that the residence time of a melt in the assembly body is consistent, the melt fluidity is good, and the temperature difference of the surfaces of spinneret plates is small.

Description

technical field [0001] The invention belongs to the technical field of spinning components, and relates to a spinning component for polyester fibers and an assembly device and method thereof. Background technique [0002] As the core component of polyester fiber spinning, the spinning assembly is to finely filter the polymer melt metered by the metering pump to remove mechanical impurities and condensed particles, fully mix and homogenize the melt, and pass it under a certain pressure. The spinneret has micro holes and is extruded to form primary fibers. Generally, different pressures can be selected according to different specifications of polyester fibers to extrude into fibers. [0003] In recent years, with the continuous progress of the chemical fiber industry in terms of manufacturing capacity, technical equipment, variety development and product quality, "new synthetic fibers" are developing in the direction of large-capacity, ultra-fine and differentiated functional ...

AI Technical Summary

Problems solved by technology

The DIO spinning assembly not only has a better filtering effect, but also must be well sealed between each assembly in the two areas. If one assembly is loose, when spinning and filtering the melt, there will be a filter effect of the melt in the two filter chambers. Different, the pressure difference in the same ingot assembly is relatively large, resulting in uneven fiber cross-section thickness, and in severe cases, it will also cause abnormalities such as slurry leakage, floating yarn, and finished silk wool, which seriously affects product quality.

In the DIO spinning assembly device of the prior art, a sealing ring is used to seal between the outer bottom of the sand cup and the spinneret to improve the reliability of the seal, but the contact surface between the outer bottom of the sand cup and the spinneret is not provided. The filter screen, the boss, and the sealing ring are easily deformed and dislocated under the extrusion of external force, and the sealing effect cannot be achieved. The melts in the two chambers are mixed with each other, and the melt filtering effect is not good; the bott

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