Two-color cable sheath extruded mould with improved structure

Abstract

The invention relates to a two-color cable sheath extruded mould with an improved structure, comprising a mould core unit (1) and a mould cover unit (2). The two-color cable sheath extruded mould with the improved structure is characterized by also comprising a mould sleeve unit (3), wherein a mould sleeve side wall (334) is provided with an injection molding hole (333) longitudinally passing through the mould sleeve side wall (334), and a mould sleeve hole (336) formed inside the mould sleeve side wall (334) is communicated with a mounting hole (331) on the front end surface (335) of the mould sleeve unit (3); the surface of the mould cover unit (2) is provided with a diffluent groove (33) and a color separation ring (23), and both of the diffluent groove (33) and the color separation ring (23) are provided with color separation holes (34) passing through the wall of a mould cover body (24) from top to bottom; the diffluent groove (33) and the color separation ring (23) are convergedinto the mould cover body (24), and the diffluent groove (33) and the color separation ring (23) both does not pass through the wall body of the mould cover body (24); the color separation ring (23) is spirally distributed along the surface of the mould cover body (24); and the inner surface of the mould sleeve side wall (334) is provided with a thread matched with screw teeth on the outer surface of the mould cover body (24). The invention has the advantages of simple structure, more even distribution of colored bands and more beautiful produced light, cables and pipelines and easy installing and debugging, and conforms to the principle of viscous body hydromechanics.

Description

technical field [0001] The invention relates to a cable sheath extrusion mold, especially a two-color cable sheath extrusion mold with improved structure. Background technique [0002] Optical and electrical cables are usually used for overhead, pipeline, and direct buried laying. With the continuous development and growth of the communication industry, multiple cables will be laid in the same tower or the same pipeline, and these cables will belong to different operations. Because the appearance of the cables is black, it is very inconvenient for maintenance. Therefore, eye-catching signs are required, usually by making the outer skin of the cables into different colors; however, because colored cables are expensive, And it cannot effectively prevent ultraviolet radiation, so operators need to have colored stripes on the outer skin of a single cable. For this, special molds are required. The existing mold adopts the combination of independent mold core unit, mold cover un...

AI Technical Summary

Problems solved by technology

The existing mold adopts the combination of independent mold core unit, mold cover unit and mold sleeve unit. The mold cover unit is provided with a circular color separation ring and a splitter groove. The color separation ring and the splitter groove are perpendicular to each other. , due to the fact that the pressure of each extrusion head is different, it is quite difficult to produce symmetrical color bars due to the interaction between the external color material injection molding machine and the main extruder

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