Loose tube double-pre-filling oil filling device and process

Abstract

The invention discloses a loose tube double-pre-filling oil filling device and process. The loose tube double-pre-filling oil filling device comprises a fiber paste filling structure and an optical fiber guide structure. The fiber paste filling structure comprises a first pre-filling mechanism and a second pre-filling mechanism, and each of the first pre-filling mechanism and the second pre-filling mechanism comprises a base internally provided with a cavity, an inlet die and a wiping die, wherein the inlet die and the wiping die are arranged at the two ends of the base respectively, and the inlet die and the wiping die are communicated with the cavity. A fiber paste runner communicated with the cavity is arranged on each base; the optical fiber guide structure comprises an optical fiber guide pipe; a guide hole is formed in the center of the optical fiber guide pipe; the center positions of the inlet dies, the wiping dies and the guide hole are located on the same straight line. The optical fiber is pre-coated with the fiber paste twice through the first pre-filling mechanism and the second pre-filling mechanism in sequence, so that the optical fiber is pre-coated with the fiber paste more uniformly and fully, and the problems of non-uniform outer diameter and bamboo joint shape of the loose tube are solved.

Description

technical field [0001] The invention relates to the technical field of optical cable sheathing, in particular to a loose tube double pre-filled oil filling device and a process. Background technique [0002] The communication optical cable transmits optical signals through the optical fiber (referred to as optical fiber) in it. The essence of the optical fiber is a kind of quartz glass, which has certain bending properties after being made into a fiber shape, but it is still very fragile. In the process of producing optical cable, it is easy to be damaged by external force, resulting in short fiber and large attenuation in the tube. In the process of optical cable manufacturing, the traditional process is to use the needle tube method to fill the fiber paste. The optical fiber travels a long distance in the needle tube. The long-term contact between the inner wall of the needle tube and the optical fiber will cause damage to the optical fiber, resulting in large loss and at...

AI Technical Summary

Problems solved by technology

However, in the production process of the single pre-filling device in the prior art, due to the excessive dispersion of the optical fiber in the inlet mold of the pre-filling device after it is released from the pay-off frame, and the jitter of the optical fiber during production, the optical fiber comes out of the wiping die. The pre-coated fiber paste is not full, resulting in a large number of air bubbles in the produced loose tube, or uneven outer diameter

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