Injection moulding method of composite material mainly containing stone and injection moulding equipment

Abstract

The invention relates to injection moulding method and equipment of composite material mainly containing stone. The injection moulding method comprises the following steps of: a. putting used raw materials in a charging device, and then pushing the raw materials into a preplasticizing machine barrel of a preplasticizing device by a material compacting component in the charging device; b. under the condition of keeping the temperature to be 15-55 DEG C, compacting the raw materials along with the rotation of a preplasticizing screw rod and conveying to an injection machine barrel; c. under the condition that material injection force is 50-180MPa, injecting the raw materials in the injection machine barrel into a mould by a mould sprue; d. under the condition of keeping the temperature of the mould to be 140-200 DEG C, curing for 40-300 seconds; and e. opening mould to take out products. The invention has the advantages of simple production process, high yield of the produced products, high production efficiency and low production cost. The products have the advantages of good mechanical strength, fire resistance, heat resistance, corrosion resistance, good electrical property, low cost and the like and can replace most of thermosetting plastics and thermoplastic plastics, thereby reducing the application amount of plastic products and providing powerful support and guarantee for creating resource-saving and environmental-friendly industries.

Description

technical field [0001] The invention relates to an injection molding method and equipment, in particular to an injection molding method for composite materials mainly made of stone. Background technique [0002] As we all know, plastic is a petrochemical product obtained from non-renewable petroleum resources. Plastic products have been widely used in various fields of the national economy such as automobiles, home appliances, and daily necessities. Plastic products have become indispensable products for society. [0003] However, while petroleum provides a large amount of organic raw materials and energy, it also brings environmental degradation, greenhouse gas effect and white pollution, which is an unsustainable development path at the cost of destroying the environment, and the reserves of petroleum resources are limited. Therefore, there is an urgent need to get rid of the heavy dependence on oil. [0004] At the same time, there are still a lot of stones in nature, es...

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Problems solved by technology

[0006] The above-mentioned method of producing products with stones has a complicated production process, low qualified rate of products produced, extremely low production efficiency and high production costs, and is difficult to produce in batches. Its utilization of stones is very limited, and existing stones cannot be consumed at all. , nor can it replace plastic products on a large scale

[0007] The quality of the products produced by the above-mentioned method of producing products with stone materials is poor and unstable, and cannot be applied to products that require high quality. It can only be used for low-grade products, products and occasions that do not require high product quality, such as sanitary ware, etc.

[0008] Due to the limitations of compaction methods and molds, the above-mentioned method of producing products from stone is difficult to produce products with complex structures and special surface treatments, let alone the production of precision parts such as automotive parts, electrical parts or parts

[0009] The use of stone to produce products has always been thought to be obtained only by this casting vibration method, so it has been at a stagnant stage and there has been no progress. Therefore, it is of great practical significance to develop a new stone molding process to replace plastics. has great economic value

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