High-precision glass fiber plastic-coating iron die

Abstract

The invention provides a high-precision glass fiber plastic-coating iron die. By means of the high-precision glass fiber plastic-coating iron die, the fixation precision of magnesium-aluminum alloy in the die is good, so that the appearance is good during injection molding; meanwhile, the quality of a product is guaranteed when the product is ejected out, and therefore the product is not prone to damage. The high-precision glass fiber plastic-coating iron die comprises a female die part and a male die part. The magnesium-aluminum alloy product is arranged between the female die part and the male die part. One side of the magnesium-aluminum alloy product is to be coated with plastic, and the other side is the positioning side. The female die part comprises a female die plate, a female die core and a hot nozzle flow pass. The male die part comprises a male die plate, a male die core and ejector pins. The high-precision glass fiber plastic-coating iron die is characterized in that the portion, corresponding to the positioning side of the magnesium-aluminum alloy product, of the male die part is provided with an insert pin structure; the top of the insert pin structure is installed on the lower end face of the positioning side of the magnesium-aluminum alloy product in an ejecting mode; the ejector pins comprise the magnesium-aluminum alloy product ejector pin and the plastic-coating structure ejector pin; the magnesium-aluminum alloy product ejector pin is installed under the center of the magnesium-aluminum alloy product in an ejecting mode.

Description

technical field [0001] The invention relates to the technical field of mold structures, in particular to a high-precision glass fiber plastic-coated iron mold. Background technique [0002] The hardness of magnesium-aluminum alloy is several times that of ABS engineering plastics, but its weight is only one-third of that of plastics. Coupled with its excellent heat dissipation capability, it is usually used in the casing of mid-to-high-end ultra-thin or small-sized notebooks. However, the use of magnesium-aluminum alloy for all shells will block the antenna, causing the laptop to be unable to communicate. The glass fiber plastic-coated iron shell solves this problem very well, and also ensures the strength and beauty of the shell. [0003] After the glass fiber material is added to the plastic, the toughness of the plastic decreases, while the brittleness increases, and its fluidity is also greatly reduced. When the existing mold product is ejected, it is easy to damage the...

AI Technical Summary

Problems solved by technology

[0003] After the glass fiber material is added to the plastic, the toughness of the plastic decreases, while the brittleness increases, and its fluidity is also greatly reduced. When the existing mold product is ejected, it is easy to damage the product, and when the mold is injected, the magnesium-aluminum alloy parts It needs to be fixed inside the mold. The fixing accuracy of the magnesium-aluminum alloy of the existing mold is difficult to control, which may easily cause poor appearance during injection molding and increase defective products.

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