Unwinding and stacking method and equipment for brittle, weak and strong fibers

Abstract

The invention relates to a method for unwinding and stacking brittle, weak and strong fibers and equipment thereof, and belongs to the technical equipment field of fiber structure manufacturing. The unwinding and stacking equipment includes a column (1), a rotating shaft (2), a winding head (3), a controller (4), a deviation correction sensor (5), an air flow concentrator (6), a tray (7) and base (8); the column (1) is vertically fixed on the base (8); the tray (7) is horizontally arranged on the base (8), and the bottom of the tray (7) is provided with a rotating Sliding mechanism (9), the airflow concentrator (6) is arranged directly above the tray (7); the controller (4) and the deviation correction sensor (5) are arranged in the middle of the column (1) ; the winding head (3) is nested on the rotating shaft (2), is horizontally arranged on the upper part of the column (1), and is located directly above the air flow concentrator (6), relative to the The other end of the rotating shaft (2) on the upper part of the column (1) is provided with the unwinding drive unit (10). The tightly wound single-bundle fiber is automatically fallen back and evenly laid on the metal tray to increase the gap between the fibers and make the fiber stack as a whole into a cylindrical geometry. The speed and position are constant to avoid this kind of fiber bundle damage, thereby reducing fiber fluff and broken filaments.

Description

technical field [0001] The invention relates to a method for unwinding and stacking brittle, weak and strong fibers and equipment thereof, and belongs to the technical equipment field of fiber structure manufacturing. Background technique [0002] In the process of preparing high-performance ceramic fibers by the precursor method, there is a key step of "connecting the past and the future", that is, transforming the organic brittle and low-strength fibers into an insoluble and infusible grid fiber structure before heat treatment can be transformed into Ceramic fiber. This process is violently exothermic. In order to ensure that the fibers are heated evenly, there needs to be enough gaps between tightly wound single bundles of fibers to facilitate heat conduction. However, in the special turntable where the single bundle of fibers is usually wound and dropped freely, due to the irregular shape of the fiber bundles and the messy pile, the overall heating of the fiber materia...

AI Technical Summary

Problems solved by technology

If manual doffing is used, the fiber stacking is messy and irregular, which will affect the heating of the fiber material

When the degree of chemical reaction is too low, the structural regularity of the fiber is also low, which proves that the number of heat-resistant structures generated in the fiber is too small, which may cause excessive molecular chain breakage in the subsequent high-temperature treatment, and introduce too many defects into the fiber.

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