Fiber unwinding machine and unwinding mode

Abstract

The invention discloses a fiber unwinding machine, which comprises an unwinding mechanism, a winding head clamp and a winding barrel arranged on the winding head clamp, wherein the winding barrel comprises a retractable central shaft, the central shaft comprises at least two central sleeve barrels sleeved with each other, a group of outer rings are formed in each central sleeve barrel, and the outer rings of different central sleeve barrels are sleeved with each other; the central shaft is detachably connected to the winding head clamp, after the central shaft is opened, the outer ring on thecentral sleeve barrel close to the winding head clamp is formed in the central shaft, and the outer ring on the central sleeve far away from the winding head clamp is arranged outside the central shaft; and hole-shaped heat dissipation spaces are formed in the outer rings. The winding barrel adopts a sleeved multilayer structure, and tows wind around the winding barrel in layers, and thus the space utilization rate of heat treatment is effectively improved; at the same time, the contact area between the tows on the outer rings and the atmosphere is increased, during heat treatment, by-productsmall molecules generated by polymerization reaction can be discharged to a great extent, and then taken away by the surrounding atmosphere, so that the reaction is promoted to be carried forward, andthe heat treatment efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of unwinding machines, in particular to a fiber unwinding machine and an unwinding method, which can be used in the production process of polyarylate fibers. Background technique [0002] Polyarylate fiber is a special fiber obtained by melt polymerization spinning. The fiber not only has strength and modulus comparable to aramid fiber, but also has unique light weight and high strength, tear resistance, heat and humidity resistance, high and low temperature performance, and vibration attenuation. Performance and excellent acid and alkali resistance, wear resistance and so on. [0003] During the entire preparation process of polyarylate fibers, spinning and heat treatment dominate. Among them, the spinning, unwinding and post-treatment winding speeds are relatively fast, while the heat treatment takes a long time, but the heat treatment can greatly improve the fiber performance. The heat treatment of poly...

AI Technical Summary

Problems solved by technology

[0004] In the preparation process of polyarylate fibers, during the unwinding process using an unwinder, the tow after traditional unwinding treatment will appear in a tow helical state, and cannot become a smooth and smooth tow after heat treatment, thereby reducing tow quality

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