Optical fiber coloring and curing equipment

Abstract

The invention discloses optical fiber coloring and curing equipment which comprises a cylindrical installing base. UVLED light source modules are installed in an inner cavity of the cylindrical installing base in the peripheral direction and the axial direction. Cylindrical surface focusing lenses are arranged in front of the light-emitting faces of the UVLED light source modules, and therefore ultraviolet light rays transmitted by the UVLED light source modules can be focused on a curing axis. The equipment is characterized in that the UVLED light source modules vertically arranged in the axial direction are arranged in a staggered mode in the peripheral direction, and one cylindrical surface focusing lens is correspondingly configured in front of each UVLED light source module. As the UVLED light source modules, arranged in the axial direction, of the adjacent sets are arranged in the staggered mode, light received by the surfaces of optical fibers is more uniform, the equipment has higher curing efficiency and better curing uniformity, curing time is shortened, and working efficiency and coating curing quality of optical fiber drawing are improved.

Description

technical field [0001] The invention relates to a device for efficiently curing the coating layer of a high-speed drawn optical fiber, and belongs to the technical field of optical fiber manufacturing equipment. Background technique [0002] The outside of the optical fiber usually has one or several layers of coating as its protective layer. In a typical optical fiber drawing process, when the preform is melted and drawn into a bare optical fiber, two or more layers of coatings need to be coated on-line. Usually a relatively soft inner coating prevents microscopic bending of the fiber, and a relatively hard outer coating provides additional protection and better handling of the fiber. These organic polymer coatings can be cured onto the fiber surface by heating (thermal curing) or ultraviolet light irradiation (UV curing). Ultraviolet (UV) curing of optical fiber coating refers to the use of ultraviolet rays to trigger rapid polymerization and crosslinking of liquid coati...

AI Technical Summary

Problems solved by technology

Mercury lamps have the disadvantage of requiring considerable power to produce UV radiation of sufficient intensity

For example, curing a single-coated fiber (such as polymer coating) may require a total power consumption of 50kW

Another disadvantage of mercury lamps is that a large amount of energy used to light mercury lamps is emitted as heat instead of ultraviolet rays, which means that mercury lamps have a relatively low energy utilization rate

Among them, the UVLED light source modules are arranged at intervals along the inner cavity of the cylindrical mounting base, and the light source units are arranged in an array along the axial direction. This arrangement will lead to uneven light received in the gaps between the adjacent UVLED light source modules in the circumferential direction, thus affecting the coating. curing quality

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