Injection moulding machine and surface decoration mould used by same

Abstract

The invention provides a surface decoration mould, which comprises an injection male mould provided with a vacuum air channel, a first female mould, wherein the first female mould and the male mould form a first mould cavity, a raw material is injected into the first mould cavity to form a primary product; a decoration male mould provided with a vacuum air channel, a second female mould, which can be moved and closed with the decoration male mould, wherein the surface (inner surface), which is contacted with the decoration male mould, of the second female mould is attached with a film, and the second female mould is provided with a plastic air channel and a heater; and a rotation disc, which is connected to the injection male mould and the decoration male mould through shafts. By rotating the rotation disc, the injection male mould on the primary side can be turned to the secondary side and the decoration male mould is turned to the primary side.

Description

technical field [0001] The invention relates to an injection molding machine and a mold used therein, especially to an injection molding machine which can integrate injection molding and surface decoration molds. Background technique [0002] In recent years, plastic or metal casings of various shapes are often used in notebook computers, mobile phone casings or tablet computers. [0003] In the manufacturing process of the shell product, the commonly used injection molding machine is equipped with: a mold for forming a mold cavity (for thermoplastic resin injection). It injects plastic or metal raw materials toward the mold cavity and cools the mold to solidify the raw materials to manufacture plastic shell products. [0004] China Taiwan Patent No. 590871 "Resin Molding Machine" provides a resin molding machine that does not require a waste take-out machine and can reduce costs, shorten the cycle time, and reduce the amount of waste. The resin molding machine of the solu...

AI Technical Summary

Problems solved by technology

[0009] However, according to the above-mentioned method, in the second step of in-mold decoration, the film formed by the ink is placed in the mold, and when the plastic is injected, the heat-resistant temperature of the ink is about 135°C, while the temperature of the plastic is above 200°C , so there will be the problem of being washed out due to the high contact temperature

[0010] In addition, if you use out-of-mold decoration, you must go through the first step again, that is, use the injection molding machine to inject and form the shell, and then place it in the vacuum forming equipment for film attachment. However, this method of out-of-mold decoration must be formed Take it out and use another device to decorate. The steps are too complicated to be completed in the same process.

[0011] In addition, the above-mentioned method will have the problem that the position of the precise relationship between the film and the mold will change, resulting in the problem that the casing after injection molding will not adhere well to the film, and even cause defective products.

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