Production process of two-time formed high-accuracy ceramic ferrule

Abstract

The invention discloses a production process of a two-time formed high-accuracy ceramic ferrule. The production process includes the following steps of banburying, smashing, primary injection molding,secondary injection molding and after-treatment. A ceramic ferrule semi-finished product is subjected to thermal debinding and sintering treatment, and a ceramic ferrule finished product is obtained.According to the production process of the two-time formed high-accuracy ceramic ferrule, the primary injection molding procedure and the secondary injection molding procedure are designed particularly; a tubular intermediate body is obtained through primary injection molding; and during secondary injection molding, ceramic plastic materials in a thermal flow channel are injected into a through hole through injecting holes in the tubular intermediate body for cooperation with a second core rod in the through hole, an optical fiber injecting hole is obtained, the ceramic plastic materials areinjected from the two sides of the second core rod through the multiple injecting holes, balance of the impact force is achieved, thus the problem of bending of the second core rod is avoided, and theforming accuracy of the optical fiber inserting hole is guaranteed.

Description

technical field [0001] The invention relates to the technical field of ceramic ferrules, in particular to a production process for secondary molding of high-precision ceramic ferrules. Background technique [0002] Ceramic ferrule is a kind of optical fiber ferrule. It is usually a ceramic cylindrical tube body made of zirconia as the main raw material. It is hard in texture and the precision of its finished product reaches sub-micron level. The most precision positioning parts are often used in the manufacture of optical fiber connectors, optical coupling of devices, etc. [0003] The diameter of the optical fiber insertion hole of the ceramic ferrule is very small, and a thinner mandrel is required to form the optical fiber insertion hole during injection. Due to the high viscosity of the ceramic plastic material used for injection, the required injection pressure is high, which may easily cause the deflection or bending of the metal core rod, resulting in the failure of ...

AI Technical Summary

Problems solved by technology

Due to the high viscosity of the ceramic plastic material used for injection, the required injection pressure is high, which may easily cause the deflection or bending of the metal mandrel, resulting in the failure of the optical fiber socket molding or the reduction of dimensional accuracy, and the pass rate is low, which needs to be improved.

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