Manufacturing method and special mold for mobile phone shell

Abstract

The invention relates to a manufacturing method of a mobile phone shell and a special die. The method is used for manufacturing a front shell or a back shell of a mobile phone and specifically comprises the following steps of cutting sheet metal into metal sheets first, drawing the metal sheets into concave hollow pieces, shaping notches of the concave hollow pieces, then putting in a die for extrusion forming, performing nanometer treatment and nanometer injection molding after extrusion forming, milling and trimming a workpiece through CNC (Computer Numerical Control), and then performing surface treatment on the workpiece. The die for manufacturing the front shell or the back shell of the mobile phone comprises a lower die and an upper die, wherein the upper die is matched with the lower die. The manufacturing method has the advantages of reasonable concept, simple operating process, good manufacturing quality and high efficiency and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of mobile phone processing and manufacturing, and in particular relates to a method for manufacturing a mobile phone shell and a special mold. Background technique [0002] Nowadays, mobile phones and tablet computers generally use metal shells to enhance the texture. There are two main forming processes, die-casting and stretching. [0003] The die-casting molding process is divided into titanium alloy die-casting panel frame front shell and zinc alloy die-casting middle frame, two die-casting processes according to the material. The manufacturing process of titanium alloy front shell panel frame is die-casting, injection molding, and painting. The manufacturing process of the zinc alloy die-casting middle frame is: die-casting, nano-processing, nano-injection molding, cnc, surface treatment. [0004] Existing stretch forming process, its main processes are: material cutting, stretching, notching, punching...

AI Technical Summary

Problems solved by technology

[0004] Existing stretch forming process, its main processes are: material cutting, stretching, notching, punching, nano treatment, nano injection molding, cnc, surface treatment, the main forming die is a drawing die, and its structure is, the lower die It is a template with a grooved die mouth, the die mouth is rounded, there is a top plate in the die, and the upper die is a punch die. The disadvantage is that the mobile phone shell structure style is less, and it is simply stretched. shape, single function

[0005] The disadvantage of the existing mobile phone case production process is that the disadvantage of die-casting is that the materials used are limited, such as titanium alloy die-casting, the material is too hard to be used as the middle frame and rear case, the processing is difficult, the material is expensive, and the material is scarce. Zinc alloy die-casting The disadvantage is that the front shell panel frame and the rear shell cannot be made, the material is soft, the hardness is not enough, and the texture of the material is poor. The shell must be made thicker to ensure the strength of the structure. The back case cannot be used as the front case, and the manufactured case has a single structure, which leads to the same appearance of the current mobile phone case. It feels like it was carved out of a mold, and the difference is too small. Some mobile phones are closed and cannot be disassembled to replace the battery, which weakens the mobility of the mobile phone. It is often necessary to charge the phone while playing with the mobile phone, and there is a risk of electric shock

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