Twisting device for optical fiber drawing

Abstract

The invention discloses a twisting device for optical fiber drawing. The twisting device comprises a mounting platform, a twisting assembly and fixed guide wheel assemblies, and further comprises a swing arm for mounting of a twisting wheel, and a driving mechanism for driving the swing arm to swing, wherein the twisting wheel is rotationally connected onto the swing arm; the swing axis of the twisting wheel is perpendicular to both an un-twisted optical fiber and the rotation axis of the twisting wheel. The driving mechanism is arranged on a middle mobile platform, so that the twisting wheel can twist the optical fiber more comprehensively, the stability of the polarization mode dispersion index of the optical fiber is guaranteed, and damage to the optical fiber in a twisting process is also avoided.

Description

technical field [0001] The invention relates to optical fiber production equipment, in particular to a twisting device for optical fiber drawing. Background technique [0002] Nowadays, the twisting wheel used in fiber drawing production is double-wheel twisting, that is, two flat wheels clamp the optical fiber and rub it left and right, so that the optical fiber rotates clockwise and counterclockwise during high-speed production, so as to solve the problem of fiber core roundness. The problem leads to the instability of the polarization mode, so as to achieve the purpose of stabilizing the polarization mode dispersion index of the fiber. But this technique has two drawbacks. First: If the clamping force of the two plane wheels is too loose, it seems that the two twisting wheels are twisting, but in fact the fiber cannot be twisted effectively, so the polarization mode dispersion index of the fiber has not been solved, and there is a certain Second: If the two flat wheel c...

AI Technical Summary

Problems solved by technology

First: If the clamping force of the two plane wheels is too loose, it seems that the two twisting wheels are twisting, but in fact the fiber cannot be twisted effectively, so the polarization mode dispersion index of the fiber has not been solved, and there is a certain Second: If the two flat wheel clamps are too tight or the surface of the wheel is slightly damaged, the optical fiber is easy to crush the surface of the optical fiber during high-speed production, resulting in product loss

[0003] At present, there are devices that use twisting wheels to twist optical fibers, such as the equipment disclosed in the invention with the application number 201210394810.0, which can adjust the position of the twisting wheels or fixed guide wheels up and down, left, right, front and back, but in the twisting process In addition to its own rotation, the wheel can only move along a straight line for twisting. The twisting is not comprehensive enough to ensure the stability of the polarization mode dispersion index of the optical fiber and prevent the fiber from being damaged during the twisting process.

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