An optical fiber secondary plastic sleeve equipment

Abstract

The invention discloses a secondary plastic sheathing device for an optical fiber, which comprises an extruder head, a front-section cooling water tank device, a front-section cooling water supply device, an optical cable loose tube shrinkage compensation device, and a rear-section cooling device. The water tank device, the rear cooling water supply device, and the optical fiber take-up device, the front cooling water tank device and the rear cooling water tank device are shrinkable water tank devices, and the front cooling water tank device and the rear cooling water tank device shrink or synchronously stretch. According to different traction speeds, the invention keeps the cooling time of the loose tube in the water tank consistent by controlling the synchronous contraction or stretching of the cooling water tank devices at both ends, thereby maintaining a consistent crystallinity to meet the production requirements of the loose tube. , before the loose tube is fully crystallized, it is further stretched by the cable loose tube shrinkage compensation device to neutralize and offset the shrinkage of the loose tube to a certain extent, thereby ensuring the stability of the remaining length of the optical fiber in the loose tube , Improve the production quality and production speed of optical cables.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to an optical fiber secondary plastic sleeve device. Background technique [0002] The secondary coating process of optical fiber is to select suitable polymer materials, adopt extrusion process, and under reasonable process conditions, put a loose tube with the same length as the optical fiber on the optical fiber. Due to the shrinkage of the loose tube, the formed The loose tube only allows the tube to shrink in a small range. The traditional process can only control a small degree of shrinkage at a lower speed and limited materials to meet the requirements, but at a higher production speed and greater flexibility Material, especially when producing grease-free full-dry environmental protection casing at high speed, due to the large shrinkage of the dry loose casing at this time, the traditional production method cannot control the shrinkage of the loose casing within a ...

AI Technical Summary

Problems solved by technology

[0002] The secondary coating process of optical fiber is to select suitable polymer materials, adopt extrusion process, and under reasonable process conditions, put a loose tube with the same length as the optical fiber on the optical fiber. Due to the shrinkage of the loose tube, the formed The loose tube only allows the tube to shrink in a small range. The traditional process can only control a small degree of shrinkage at a lower speed and limited materials to meet the requirements, but at a higher production speed and greater flexibility Material, especially when producing grease-free full-dry environmental protection casing at high speed, due to the large shrinkage of the dry loose casing at this time, the traditional production method cannot control the shrinkage of the loose casing within a reasonable range, which affects the loose casing. Casing production quality and productivity

And existing all kinds such as wheel type, belt-type casing press traction water tank device are fixed in the production process position, when the traction speed of production line changes, because the length of water tank device is fixed, make various The cooling time of the material loose tube in the water tank is inconsistent, resulting in inconsistent crystallinity, which cannot meet the production requirements of high-speed production of hydrogel-filled loose tube or fully dry environmental protection optical cable loose tube

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