In modern society, mobile phones have become an indispensable tool in people's daily lives, and the continuous progress of their design and manufacturing processes has promoted the rapid development of the entire mobile phone industry. As an important part of mobile phones, mobile phone shells need to provide not only beautiful appearance, but also ensure their durability and functionality. This article will introduce the production process, structural design, mold design and related design points of mobile phone shells in detail.

Production process of mobile phone shells
The production of mobile phone shells is a complex process, including the following key steps:

Structural design: The design team designs the structure of the shell according to product requirements, including main components such as the front shell, back shell, bracket, and small parts such as battery cover and buttons.
Mold development: According to the design drawings, develop precision molds for injection molding production.
Injection molding production: Use molds for injection molding of plastic shells.
Spraying and printing: Surface treatment of injection molded shells, including spraying, silk screen printing and other processes, to achieve the final appearance effect.
Key points of structural design
During the structural design stage, designers need to consider the following factors:

Material selection: Select suitable plastic materials such as PC or ABS+PC according to product requirements.
Internal structure: Ensure that the internal structure of the shell can adapt to the assembly of components such as circuit boards and batteries.
Surface treatment: Determine the surface treatment process of the shell, such as spraying, silk screen printing, etc.
Processing methods: Evaluate the feasibility and cost-effectiveness of different processing methods.
Interoperability: Ensure the interoperability and assembly between all components.
Structural strength: Evaluate the structural strength and installation positioning of plastic parts.
Assembly route: Determine the best assembly route to improve production efficiency.
Key points of mold design
Mold design is a key link to ensure product quality and production efficiency. Designers need to consider the following factors:

Rib design:

The thickness of the rib does not exceed 0.6 times the thickness of the shell.
The height of the rib does not exceed 3-5 times the thickness of the body.
The draft angle is 0.5-1.0 degrees.
Fillet the root of the rib to increase strength.
Hook design:

The hook size is generally 0.5mm-0.8mm.
Leave an appropriate gap between the bite surface of the hook and the slot to facilitate mold repair and disassembly.
The slot is preferably made closed to increase strength.
Nut hole design:

Nut holes are used to connect fasteners or position. When designing, ensure that there are sufficient supports to increase strength.
Mold material:

The thickness of the mold iron material must be greater than 0.5mm.
The draft angle of the mother mold surface should be greater than 3 degrees.

The design and manufacture of mobile phone shells is a complex process involving multiple links, from structural design to mold development, to injection molding production and surface treatment. Each link has an important impact on the quality of the final product. Through careful design and precise manufacturing process, it can be ensured that the mobile phone shell is not only beautiful in appearance, but also durable and practical.