Double-colored strip sheath and its extrusion die

Abstract

The invention discloses a double-different-color strip sheath and an extrusion die thereof. The double-different-color strip sheath includes a sheath body, and two pairs of double-different-color strips arranged in parallel are embedded on the outer side of the sheath body. Symmetrically arranged; the extrusion die includes a mold core, a color stripe diverter cone, and a color stripe mold sleeve. The two color stripe flow channels, the flow channel inlets of the first color stripe flow channel and the second color stripe flow channel are respectively connected with the diversion outlets of the two color stripe flow channels, and the first color stripe flow channel and the second color stripe flow channel are separated from each other by The bifurcation at the entrance of the mold sleeve extends to both sides of the color stripe mold sleeve. The first color stripe flow channel and the second color stripe flow are both provided with two flow channel outlets, and the flow channel outlets are symmetrically arranged on both sides of the color stripe mold sleeve. . The present invention proposes a color stripe form different from conventional single color stripes and multiple color stripes, improves recognition, and proposes a special mold for producing the color stripe form.

Description

technical field [0001] The invention relates to the field of optical cable design and manufacture, in particular to a double-heterochromatic strip sheath and an extrusion die thereof. Background technique [0002] The optical cable market generally requires the use of black PE outer sheath. Now, in order to increase the recognition of the appearance of the optical cable and facilitate the installation, maintenance and fault detection of the optical cable, usually on the outer sheath surface of the optical cable, a color different from the sheath color is set along the axial direction. As the use of color bars is becoming more and more common, existing optical cables have single color bars, double color bars, and even multiple color bars. In order to achieve the recognition of the appearance, it is necessary to continuously increase the number and color of the color bars. , In this way, it is necessary to increase the color bar auxiliary machine during production. When the co...

AI Technical Summary

Problems solved by technology

[0003] The forming process of producing color stripe optical cable is realized in two ways. The first one uses the color stripe splitter cone to control the shape of the color stripe. The color stripe produced by the color stripe splitter cone is relatively stable, but the cost of the color stripe splitter cone is high, The versatility is poor, and it is cumbersome to replace the color strip splitter cone; the second type uses the color strip mold set to control the shape of the color strip. The color strip produced by the color strip mold set has strong applicability and low mold cost, but the overall assembly and stability are not as good as The first

The two color stripe forming processes in the prior art limit the diversity of color stripe forms. Whether it is through the splitter cone or the color stripe die set, the number of color stripes can only be increased, and will be saturated after reaching a certain level. Therefore, there is an urgent need for a new extrusion die to break down industry barriers

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