Drafting roll for fiber spinning

Abstract

The invention relates to a drafting roll for fiber spinning, which belongs to the field of spinning machinery and comprises a double-end conical-surface roll core (1) and a porcelain tube (4). A central portion of the double-end conical-surface roll core (1) is a conical hole or a cylindrical hole with a key groove, and the double-end conical-surface roll core (1) is connected with an output shaft of a drafting machine through the conical hole or the cylindrical hole. The drafting roll for the fiber spinning is characterized in that the porcelain tube (4) is coaxial with the double-end conical-surface roll core (1), the porcelain tube (4) is sleeved on a protruding shoulder of the double-end conical-surface roll core (1), a connection locking device is arranged between an inner tube wall of the porcelain tube (4) and a double-end conical face of the double-end conical-surface roll core (1), and the double-end conical-surface roll core (1) is connected with two ends of the porcelain tube (4) through the connection locking device. The drafting roll for the fiber spinning can achieve the advantages of being abrasion-resisting, anti-corroding and efficient, and the service life of the drafting roll is more than 6 months under the conditions that the spinning speed ranges from 300 to 600 m / min and the production is continuous. The drafting roll can be used repeatedly by repairing outer circle size of the porcelain tube.

Description

technical field [0001] The invention relates to a drafting roller for fiber spinning, in particular to a drafting roller used in aramid 1414 fiber spinning or other high-performance fiber production lines, and belongs to the field of textile machinery. Background technique [0002] In the production process of aramid 1414 fiber or other high-performance fibers, the polymer solution is sprayed through the fine holes of the spinneret for spinning and formed in the coagulation bath, and the formed tow coming out of the coagulation bath is drawn by one or several Machine (generally a seven-roller drawing machine) is drafted and washed with alkali and water at the same time, so the acid and alkali corrosion resistance of the drafting rollers is required to be very high. Most of the rollers currently being used in the market are made of 0Cr18Ni9 or 00Cr17Ni14Mo2 stainless steel materials, which are electroplated with hard chrome after mechanical processing, and the hardness is gen...

AI Technical Summary

Problems solved by technology

[0003] Further improved design, spraying ceramics on the surface of stainless steel, due to the technical problems of spraying ceramics, the spraying thickness cannot exceed 0.5mm, the hardness of sprayed ceramics is below HRA80, and the density of sprayed ceramics is poor, and the porosity is greater than 5%. Compared with the chrome-plated roller, the degree of hardness improvement is limited, and the friction resistance of the roller surface has not been effectively solved.

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