8-shaped optical cable three-color-stripe extrusion die sleeve

Abstract

The invention provides an 8-shaped optical cable three-color-strip extrusion die sleeve which comprises a die sleeve body with a hollow cavity. The cavity in the die sleeve body comprises a conical extrusion cavity and a shaping cavity, wherein the shaping cavity is communicated with a small opening end of the conical extrusion cavity; the shaping cavity is wholly in an 8 shape and comprises a suspension wire opening and a cable core opening, the suspension wire opening and the cable core opening are correspondingly and vertically arranged, and the suspension wire opening and the cable core opening are communicated through a long groove; a color strip injection buffer area, an overflow are and an injection area are sequentially arranged on the outer side of the die sleeve body; a suspension wire color strip hole communicated with the suspension wire opening and a cable core color strip hole communicated with the cable core opening are formed in the die sleeve body in the radial direction, and the suspension wire color strip hole and the cable core strip hole are both arranged to be adjacent to the injection area. The die sleeve can extrude the color stripes in stages, and a color strip material passes through the buffer area, the overflow area, the injection area and the flat color strip holes; thus, the whole color strips can be more stably extruded out, pressure distribution is even, production efficiency is improved, and extrusion quality of the color strips is high.

Description

technical field [0001] The invention belongs to the technical field of cable production equipment, and in particular relates to an extrusion die sleeve for three-color stripes of an 8-shaped optical cable. Background technique [0002] The promotion and development of optical cables has been around the world for more than 30 years. From the laying of the first optical cable to the present, the same pipeline, the same pole, and even the same type of optical cable will have multiple operators to varying degrees. , Various types of optical cables increase the difficulty of identification of our own optical cables. If one or more color bars are set along the axial direction of the cable body, the problem of difficult identification during installation and maintenance can be well solved. The manufacture of color stripes requires a reasonable color stripe extrusion process, and the most important thing is an effective color stripe extrusion die set. Existing color stripe extrusio...

AI Technical Summary

Problems solved by technology

Existing color stripe extrusion die sleeves have poor stability during the color stripe extrusion process, and it is difficult to adjust the color stripe width, and most of them use circular color stripe extrusion holes, which have a large cross-sectional area, resulting in excessive pressure and affecting the color stripe. The quality of the extrusion will bring hidden dangers to the appearance of the optical cable and even the service life in the future

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