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With China Plastic Machinery
With China Plastic Machinery
Thermal temperature-variable traceless injection molding technology uses high-temperature hot steam to make certain local positions of the mold reach a very high temperature instantly, ensuring that the mold cavity is quickly filled when the temperature difference between the molding material and the plastic mold is very small, and converts the steam into cold water while the molding material is cooling to quickly reduce the mold temperature, so as to obtain a new type of auxiliary molding process with very high surface quality effect at local positions of the product.
Since 2007, the application of thermal temperature-variable high-gloss traceless injection molding technology has developed rapidly in China, and the product field has involved many fields such as high-end home display products, high-end home appliances, high-end electronic equipment and high-end automotive decorative parts. At the same time, with the continuous application and development of thermal temperature-variable high-gloss traceless injection molding technology in China, its complex mold manufacturing technology has gradually been mastered by Chinese mold manufacturing companies. Among the many thermal temperature-variable high-gloss traceless injection molds currently in production, the proportion of domestic molds has increased significantly, and even the mold manufacturing technology concept of some special high-gloss products has become internationally leading.
Principle of steam-assisted injection molding technology?
The specific implementation process is: make a uniform heating channel on the mold, and blow high-temperature steam into it after the injection molding machine is molded (in special cases, the mold can be opened and heated), first raise the mold temperature to a heating setting value, and then start injecting plastic into the mold cavity. After the injection molding machine completes injection/pressure holding and turns to cooling, start injecting cold water. The mold temperature quickly drops to a cooling setting value and then opens the mold. Then blow air into the mold to completely blow away the cold water, complete the entire injection molding process, and wait for the next injection cycle.
Principle of electric heating assisted molding technology?
Electro-thermal assisted injection molding is a new type of auxiliary molding process that uses a high-efficiency electric heating device installed locally on the mold to instantly reach a very high temperature in some local positions of the mold, ensuring that the mold cavity is quickly filled when the temperature difference between the molding material and the plastic mold is very small, and quickly lowering the mold temperature while the molding material is cooling, so as to obtain a very high surface quality effect at the local position of the product.
The specific implementation process is: install uniform electric heat channels in the corresponding parts of the mold, and quickly heat it before the injection molding is about to close the mold. Use electric energy to raise the mold surface temperature to a certain heating set value, and then start injecting plastic into the mold cavity. After the injection molding machine completes the injection/pressure holding, the mold temperature rises to a cooling set value and then opens the mold, thus completing the entire injection molding process and waiting for the next injection cycle.
How does superheated water assisted molding work?
Superheated water assisted injection molding uses high-temperature and high-pressure hot water to make certain local positions of the mold reach a very high temperature instantly, ensuring that the mold cavity is quickly filled when the temperature difference between the molding material and the plastic mold is very small, and converting hot water into cold water while the molding material is cooling to quickly reduce the mold temperature, so as to obtain a new type of auxiliary molding process with very high surface quality effects at local positions of the product.
Steam assisted molding equipment?
Under the action of the steam thermal efficiency controller, high temperature and high pressure steam, cooling water and compressed air are sequentially switched and input into the mold waterway, so as to achieve a complete set of equipment that can increase and decrease the temperature of the corresponding parts of the mold. It is suitable for large-scale thermal variable temperature seamless injection molding products, such as large flat-panel displays or similar products. It is the most widely used thermal variable temperature high gloss seamless injection molding system technology.
Electrical heating assisted molding equipment?
Under the action of multifunctional electric heating control, the heating element built into the mold is quickly energized and heated, so as to achieve a complete set of equipment that can increase and decrease the temperature of the corresponding parts of the mold. It is suitable for medium and small thermal variable temperature seamless injection molding products, such as medium and small flat-panel displays or similar products.
Eliminate the weld line on the product surface, and the product does not need subsequent painting processing;
Enhance the flow and filling effect of raw materials and improve production efficiency
Improve the surface finish of the product to achieve a mirror effect;
Solve the floating fiber phenomenon caused by fiber-added products.
It can be seen that the thermal variable temperature seamless injection molding technology has advantages that conventional injection molding cannot match, which makes this technology have a wide range of uses in the fields of household appliances and electronic products. The use of this technology can avoid a series of links such as painting and coating, greatly saving direct production costs and improving production efficiency. The county has important practical significance for the environmental protection issues that the country is increasingly concerned about.
To sum up, this technology may become another revolutionary technology direction after gas-assisted technology in the near future. Currently, many large companies have invested their efforts to pay attention to the development of this technology. Its products will involve many practical products such as LCD TV products, computer LCD monitor products, automobile exterior products, lamps and optical instruments products.
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