Production assembly line and production technology of optical unit sheath

Abstract

The invention discloses a production assembly line and production technology of an optical unit sheath. The production assembly line comprises a paying-off device, a tension controller, a hot melt adhesive coating device, a first extruding machine, a preliminary cooling water tank, a second extruding machine, a complete cooing water tank, an online external diameter monitor and a take-up device which are arranged successively; a stainless steel pipe is coiled on the paying-off device; and the tension controller controls a tension force, the hot melt adhesive coating device coats a surface with an adhesive, the first extruding machine carries out first plastic extrusion of the sheath, the preliminary cooling water tank carries out preliminary cooling, the second extruding machine carries out secondary plastic extrusion of the sheath, the complete cooing water tank carries out complete cooling, the online external diameter monitor detects an external diameter value, and the take-up device carries out rolling. According to the invention, the thickness and external diameters of prepared optical units are uniform, the radial water-blocking performance is high, the stainless steel pipe is combined with the sheath tightly, and the vertical water blocking performance is high.

Description

technical field [0001] The invention relates to a production line, in particular to a production line for an optical unit sheath. Background technique [0002] With my country's vigorous development of the marine industry and the implementation of the strategic policy of building a powerful marine country, the construction of offshore wind power, offshore oil and gas, and island power grids have entered a period of rapid development. The demand for applications has also increased dramatically. [0003] Since submarine cables are mostly used underwater, they are quite different from land cables in terms of structural design and performance requirements. Submarine cables have extremely stringent water-blocking performance requirements. In order to achieve good water-blocking performance in the radial and longitudinal directions, the optical unit sleeves for submarine cables are made of stainless steel tubes, filled with water-blocking ointment, and coated with Hot melt glue, ...

AI Technical Summary

Problems solved by technology

The diameter of the stainless steel pipe is generally not greater than 3.8mm. It is a common practice in the industry to complete the extrusion of the sheath by a single extruder. When the thickness of the sheath is relatively small, extrusion is easy to achieve; when the thickness of the sheath is relatively large, Due to the influence of gravity, heat absorption, insufficient cooling and other factors, the thickness and outer diameter of the sheath will be uneven when extruded by a single extruder, and some points on the cross section of the sheath are large and some are small. And the stainless steel pipe is separated from the sheath, there is a gap in the middle, and the thicker the sheath, the more serious the situation. Unit water resistance requirements

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