Forming device of blank of cored ceramics and its forming method

Abstract

The invention discloses equipment and method of ceramic insert core blank, the die cavity of blank molding is equipped with shaping wires, the lower mouth of the die cavity is equipped with thimble die, and the thimble die is equipped with axle hole which passes through the shaping hole, the upper of the die cavity is equipped with two punching semi-dies and semi-dies press ram, the side of semi-dies press ram is equipped with slot for containing shaping wires, one end of shaping wires is fixed under the thimble die and another end is clamped by thread griping device; because he invention uses bidirectional positioning for the shaping wires in the die cavity, it can realize the dry press shaping of blanks, so the ceramic insert core blank produced through the equipment and method is different to distortion and accesses to product, the use of raw materials are not wasted, the inner hole of blank are not blocked and deformed, the yield rate is greatly enhanced, the follow-up fine finishing steps of sintered products is less, production speed is significantly increased; production costs are reduced significantly.

Description

technical field [0001] The invention belongs to the technical field of compression molding, and relates to a molding device and method for a ceramic ferrule blank used in optical fiber communication. Background technique [0002] Optical fiber connector is an important device for optical fiber communication connection, and ceramic ferrule is a key part in optical fiber connector. Due to the characteristics of high strength, good corrosion resistance, good insulation performance, smooth surface and long service life, ceramic materials have become the first choice for ferrule materials in optical fiber connectors. At present, the production device and method of ceramic ferrule blanks mainly adopt unidirectional positioning wet injection molding. For example, the publication number is CN1376563A, and the Chinese invention patent named "extrusion molding die and molding process of ceramic ferrule blanks" It discloses a mold and process for preparing zirconia optical fiber ferru...

AI Technical Summary

Problems solved by technology

The above-mentioned molding device and method of the ceramic ferrule blank mainly have the following defects: 1. During the molding process of the blank, the blank enters the mold cavity of the mold through the injection port of the feeder channel, and the blank is formed by extrusion molding, The molded blank is a whole with residual raw materials at the injection port of the material channel, so this molding method will waste a lot of valuable raw materials; 2. Since the injection molding adopts wet injection molding, the blank is prone to deformation during molding; At the same time, due to the use of one-way positioning, it is easy to cause inner hole blockage and eccentricity of the inner hole at the non-positioning end during the molding process, thereby affecting the yield of blank production; 3. Due to the use of injection molding, the blank should also be considered fluidity, usually many additives are added to the formed blank, which may lead to uneven density and easy deformation of the blank after sintering. In addition, the formed blank has the residue of the feeder mouth. The quantity is large and the process is very complicated, which leads to low production efficiency and high production cost

Images