Large-area ultrathin plastic part injection mould

Abstract

The invention relates to the field of plastic injection molding moulds, and particularly relates to a large-area ultrathin plastic part injection mould. The mould comprises a static mould and a movable mould, wherein the static mould is composed of a static mould fixing plate, and the static template and a static mould core, a movable mould composed of a movable mould fixing plate, a pad, a movable template and a movable template core; the static template is a thickened static template; the pad is a whole square thick steel block; an ejection device is a push board ejection device; an exhaustsystem comprises a group of exhaust plates at the bottom of a mould cavity, an exhaust groove at the periphery of the mould cavity and an exhaust channel connected with the exhaust plates and the exhaust groove; and a compressed air blow pipe leading the exhaust channel to generate negative pressure is arranged on the exhaust channel. The mould has high strength, the service life is up to 2 million times; the exhaust is smooth, and adverse phenomena, such as insufficient filling, burning, air trapping, heavy fused connecting wire and the like, are prevented, so that the purpose of large area of 1,429mm<2> and ultrathin of 0.18mm molding is achieved; and the extrusion or deformation of a product is effectively avoided by adopting the push board ejection device.

Description

technical field [0001] The invention relates to the field of plastic injection molds, in particular to an injection mold for large-area ultra-thin plastic parts. Background technique [0002] Lighter and thinner consumer electronic products, such as mobile phones and portable computers, not only require highly integrated circuit components, but also require further thinning of the plastic parts that make up various housings. For example, the shell of the mobile phone battery is thinned from the original 0.25mm to 0.18mm, and the molding area is 1429mm 2 , thus raising the problem of forming molds for large-area ultra-thin injection molded parts. [0003] Problems that need to be solved in the forming mold of ultra-thin injection molded parts: [0004] 1. Since the flow channel of thin-walled products is much narrower than that of traditional injection molded products, it is easy to freeze during the molding process. In order to overcome this situation, the injection rate ...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the existing ultra-thin injection molding dies that cannot meet the mass production and molding requirements of large-area 0.18mm ultra-thin injection moldings, and provide a large-area 0.18mm ultra-thin injection molding die with a new structure

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