Method for manufacturing middle frame of mobile phone and middle frame of mobile phone

Abstract

The invention discloses a manufacturing method of a mobile phone middle frame. The manufacturing method comprises the following steps that S1, a metal board is punched into a first workblank with a groove; S2, an injection molding area and a positioning piece connected with a frame of the first workblank are machined in the first workblank, and a second workblank is obtained; S3, in-mold injection molding is carried out on the injection molding area of the first workblank to obtain a third workblank; S4, the frame of the third workblank is machined to be of a preset thickness to obtain a fourth workblank; and S5, the positioning piece in the fourth workblank is removed. In the whole machining process, the machining allowance of each step is controlled effectively, the numerical control machining allowance can be reduced through punching, the punching time is short, the cost is low, and the allowance of subsequence numerical control machining is also small, so that the machining time is shortened, and the machining cost is reduced. Through accurate positioning of the positioning piece, the injection molding and machining precision is high, so that the yield of the finished middle frame is improved, and the manufacturing cost is further reduced.

Description

technical field [0001] The invention relates to the field of mobile phone manufacturing, and more specifically, to a method for manufacturing a mobile phone middle frame and a mobile phone middle frame. Background technique [0002] With the improvement of consumption level, consumers not only pay attention to the quality of electronic products, but also pay more and more attention to their texture and feel. Electronic products with special texture and feel are more competitive in the market. [0003] At present, most mobile phone shells on the market are made of plastic. The plastic shell has poor wear resistance, and scratches or even discoloration will appear after a period of use, and the texture and feel are rough. In order to solve the above-mentioned problems of plastic mobile phone casings, more and more mobile phones use metal casings. Metal casings can bring unparalleled visual impact, not only have the advantages of fine touch, wear resistance, drop resistance, a...

AI Technical Summary

Problems solved by technology

[0004] However, the existing metal shells are generally processed from a whole piece of metal profile. Due to the limitation of the processing method, the processing and molding takes a long time, the production cost is high, and the mass production of the metal shell is greatly restricted.

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