A shear cone device and method for fiber drawing

Abstract

The invention discloses a high-temperature-glass shearing device for fiber drawing. The device comprises a traction wheel unit, an air cylinder, a shear cutter unit, a shear cutter unit driving motor,a central control unit and a sensor, wherein the traction wheel unit, the air cylinder, the central control unit and the sensor are fixed on the substrate; the sensor is arranged at the top of the device and used for acquiring the diameter of high-temperature glass falling from the opening of a fiber drawing furnace; the traction unit comprises at least one pair of drive wheels and one pair of driven wheels; the drive wheels are fixedly arranged on the substrate, and the driven wheels are connected with the air cylinder and rotate along with the movement of the air cylinder so as to cooperatewith the drive wheels to change the diameter of the high-temperature glass; the shear cutter unit is arranged right below the traction wheel unit and comprises a pair of shear cutters. The device cansolve the technical problems that the fiber drawing furnace is blocked due to the fact that the falling speed of the high-temperature glass cannot be effectively controlled, and the high-temperatureglass above the shearing cutters shakes due to the fact that moving speed of the shearing cutters is low.

Description

technical field [0001] The invention belongs to the technical field of optical fiber manufacturing, and more particularly relates to a shear cone device and method for drawing optical fiber. Background technique [0002] Since the diameter of the optical fiber preform is much larger than the diameter of the optical fiber in the initial stage of melting and drawing, in order to control the glass diameter in this initial stage, it is necessary to cut off the high temperature glass produced by the optical fiber preform in this initial stage, so as not to damage the equipment downstream of the drawing tower, This is the shear cone process, which is an important process in the initial stage of the fiber drawing process. Due to the great difference in physical state and mechanical properties between molten high-temperature glass and normal-temperature glass, the current shearing work is usually done manually, with a low degree of automation, which has become a bottleneck that hind...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a shearing cone device and method for optical fiber drawing. It will lead to the technical problems of blocking the drawing furnace and the slow moving speed of the shearing knife causing the high-temperature glass above it to shake, and it can realize the automation of the shearing cone process in the fiber drawing process

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