A mobile terminal back cover molding method and compression mold with 3D arc surface
A technology of mobile terminals and molding methods, which is applied in household appliances, other household appliances, household components, etc., can solve the problems of high mold manufacturing precision and difficult mold parting, and achieve the goal of simplifying mold parting difficulty and reducing mold precision requirements Effect
Active Publication Date: 2020-10-13
SHENZHEN SOUTH POLE OPTOELECTRONICS TECH
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Problems solved by technology
[0005] In order to solve the above technical problems, the present invention provides a mobile terminal back cover molding method with a 3D curved surface and a compression mold, aiming at solving the problem of using injection molding to produce the mobile terminal back cover with a curved fitting surface in the prior art. , resulting in difficulty in parting molds and high precision requirements for mold manufacturing
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[0042] The specific embodiments and examples of the present invention will be described in detail below in conjunction with the accompanying drawings. The described specific embodiments are only used to explain the present invention, and are not intended to limit the specific embodiments of the present invention.
[0043] The mobile terminal back cover molding method with a 3D curved surface provided by the present invention is used to form a mobile terminal back cover with an arc-shaped fitting surface (such as a mobile terminal back cover made of polymer resin material), and is realized based on a compression mold. The compression mold includes: a movable mold and a fixed mold, the movable mold includes a movable mold kernel, the fixed mold includes a fixed mold kernel, and either one of the movable mold kernel and the fixed mold kernel is provided with an arc-shaped groove, The other of the two is provided with an arc-shaped protrusion, and the edge of the arc-shaped groove ...
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Abstract
The invention discloses a molding method of a mobile terminal rear cover with a 3D cambered surface and a compression mold. By means of a plane notch which is formed in the compression mold in an extending manner, a rear cover substrate with an open end face being a plane is molded through plastic injection, compression molding and mold opening; then, materials on the end face of an open end of the rear cover substrate are removed through CNC according to a set program; and the mobile terminal rear cover with a cambered surface attachment face is molded. According to the molding method of themobile terminal rear cover with the 3D cambered surface, the rear cover substrate can be molded from the mobile terminal rear cover with the rectangular attachment face through compression molding; the mold separation difficulty formed in the injection molding process is lowered; and the mold precision requirement is lowered.
Description
technical field [0001] The invention relates to the field of forming methods for the back cover of a mobile terminal, in particular to a method for forming the back cover of a mobile terminal with a 3D arc surface and a compression mold. Background technique [0002] The back cover of mobile terminals such as mobile phones and tablets is used as a back accessory. On the one hand, it can protect the internal parts of the mobile terminal, and on the other hand, it can optimize the appearance of the mobile terminal to increase sales. [0003] Injection molding is a common molding method for mobile terminal back covers. When used for mobile terminal back covers with curved fitting surfaces (in figure 1 Among them, the arc-shaped fitting surface is marked with the letter T), but it seems relatively weak, because the fitting surface of the back cover of this type of mobile terminal is non-planar, it is difficult to part the mold, and the mold manufacturing precision is high. [0...
Claims
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IPC IPC(8): B29C45/00B29C45/26B29L31/34
CPCB29C45/0055B29C45/26B29L2031/34B29L2031/3437
Inventor 彭永生
Owner SHENZHEN SOUTH POLE OPTOELECTRONICS TECH