Light guide plate mould

Abstract

The invention discloses a light guide plate mould. The light guide plate mould comprises a lower mould, an upper mould arranged above the lower mould, an ejection rod hole formed in the bottom of the lower mould, a sealing strip arranged in the ejection rod hole, a mould cavity arranged in the lower mould, a material injection hole formed in the upper mould, an air exhausting hole which is formed in the upper mould and is communicated with the mould cavity, and a vacuum air pumping machine arranged at the top of the air exhausting hole, wherein the upper mould and the lower mould are matched to form a parting surface; the parting surface is provided with a sealing ring; a guide column is further arranged between the upper mould and the lower mould; the guide column is provided with a vibration absorption spring. With the adoption of the light guide plate mould, materials have no air resistance in the process of flowing in the mould cavity and the flowing is very smooth; no air exists in the mould cavity so that air bubbles in a product can be eliminated effectively; when the upper mould and the lower mould are closed, the vibration absorption spring can have a buffering effect and the mould is not damaged, so that the service life of the mould is prolonged.

Description

technical field [0001] The invention relates to a light guide plate mold. Background technique [0002] In the field of light guide plate molds, the structure of the existing light guide plate molds is relatively simple, only consisting of an upper mold and a lower mold. When working, after the upper mold and the lower mold are closed, the molten plastic is directly injected into the mold cavity by the injection molding machine to form the final product. There are following problems in this traditional way: [0003] 1. There is no sealing device in the mold cavity, and there is air, so that the plastic is affected by air resistance when flowing in the mold cavity, and the flow is difficult. [0004] 2. Due to the presence of air, the final product contains air bubbles and the quality of the product decreases. [0005] 3. When the upper mold and the lower mold are clamped, the clamping speed of the upper mold is fast, which may easily cause damage to the surface of the...

AI Technical Summary

Problems solved by technology

[0003] 1. There is no sealing device in the mold cavity, and there is air, so that the plastic is affected by air resistance when flowing in the mold cavity, and the flow is difficult

[0004] 2. Due to the presence of air, the final product contains air bubbles and the quality of the product decreases

[0005] 3. When the upper mold and the lower mold are closed, the upper mold closes quickly, which is easy to cause damage to the surface of the mold and damage the mold, which greatly reduces the service life of the light guide plate mold

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