Dry press forming device and forming method for porcelain plug pin blank

Abstract

The invention relates to a dry press forming device and a dry press forming method for a porcelain plug pin blank. The device comprises a shaping wire, a wire clamping mechanism, a die pressing plate and a template; the template comprises a left half die and a right half die which are butted, and a die cavity is formed between the two butted half dies; a male die is formed on the die pressing plate above the template; the shaping wire passes through the male die and passes through the template through the die cavity, so that the die cavity forms a blind hole; the male die is matched with the die cavity which forms the blind hole; the shaping wire above the die pressing plate is clamped and locked by the wire clamping mechanism; the shaping wire below the template is connected with a wire drawing mechanism. The device and the method overcome the defects of high rejection rate, high raw material waste and low processing efficiency in the prior art, and have the advantages of high die stripping speed, low deformation of the blank, high yield, stable performance and high material utilization rate by the design.

Description

technical field [0001] The invention relates to a dry pressing molding device and a molding method for a porcelain pin body. Background technique [0002] Ceramic ferrule is an essential key component in optical fiber active connectors in optical communication networks. With the popularization of fiber-to-the-home and the progress of the "three-in-one" renovation project, the market demand has increased sharply. Most of the existing ceramic ferrule green body molding technology adopts injection molding, and this technology and injection material formula have been monopolized by Japan for a long time, but this injection molding technology has the following defects: 1. The diameter of the core in the mold cavity is only 0.125mm , and is one-way positioning, it is very easy to make the core shift, deform or break during the injection process, which directly affects the verticality and concentricity of the inner hole of the ceramic pin after molding or increases the maintenance ...

AI Technical Summary

Problems solved by technology

Most of the existing ceramic ferrule green body molding technology adopts injection molding, and this technology and injection material formula have been monopolized by Japan for a long time, but this injection molding technology has the following defects: 1. The diameter of the core in the mold cavity is only 0.125mm , and it is one-way positioning, it is very easy to make the core shift, deform or break during the injection process, which directly affects the verticality and concentricity of the inner hole of the ceramic pin after molding or increases the maintenance cost

2. Because the ceramic raw material needs to have injection molding performance, a large amount of additives are added to the ceramic powder, which not only increases the cost, but also increases the shrinkage ratio and deformation of the injection molded green body during the sintering process and affects the product's overall size. and scrap rate

3. Injection molding molds must have injection runners and injection ports. Due to the small size of the pins, there are two types of specifications, with diameters of ?2.5mm and ?1.25mm, and lengths of 10.5mm and 6.5mm. The remaining runner and sprue material is much larger than the product material, causing waste of resources and increasing costs

4. During injection molding, when the material is injected into the mold cavity, it needs to be heated, kept under pressure, solidified, and shaped, so the processing speed is slow and the work efficiency is low

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