芭乐视频app黄污下载安装

Advantages of thermal variable temperature technology

1、 Background of heat variable temperature high gloss non marking injection molding technology
        Since 2007, the application of thermal variable temperature high gloss non marking injection molding technology has developed rapidly in China. The product field has involved many fields, such as high-end home display products, high-end household appliances, high-end electronic equipment and high-end automobile decoration parts. At the same time, with the continuous application and development of thermal variable temperature high gloss non marking injection molding technology in China, its complex mold manufacturing technology has been gradually mastered by domestic mold manufacturing enterprises. In the current many production of thermal variable temperature high gloss non marking injection mold, the proportion of domestic mold has been greatly increased, and even some special high gloss products mold manufacturing technology concept has international leading
 
2、 Classification of heat variable temperature high gloss non marking injection molding technology
① Principle of steam assisted injection molding technology
        Steam assisted injection molding (VAI) is a new method that uses high temperature hot steam to make some parts of the mold reach a high temperature instantaneously, so as to quickly fill the mold cavity when the temperature difference between the molding material and the plastic mold is very small, and change the steam into cold water while the molding material is cooling, so as to rapidly reduce the mold temperature, so as to obtain a very high surface quality effect at the local position of the product A new type of auxiliary molding process.
       The specific implementation process is as follows: a constant heating channel is made on the mold. When the injection molding machine closes the mold (the mold can be opened and heated under special circumstances), high-temperature steam is blown in. First, the mold temperature is raised to a heating set value, and then plastic injection is started into the mold cavity. After the injection molding machine completes injection / holding pressure and turns to cooling, the injection of cold water starts, and the mold temperature drops to a cooling device quickly After setting the value, open the mold, and then blow air into the mold to blow the cold water away completely. The whole injection process is completed and waiting for the next injection cycle.
 
② Principle of electrothermal assisted molding technology
Electrothermal assisted injection molding is to use high-efficiency electric heating device locally installed in the mold to make It is a new type of auxiliary molding process that the temperature of some parts of the mold reaches a very high instantaneously to ensure that the temperature difference between the molding material and the plastic mold is very small, and the mold temperature is rapidly reduced 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 as follows: the corresponding parts of the mold are installed with a uniform electric heat channel. When the injection molding is to be closed, the mold surface temperature is raised to a certain heating set value by using electric energy, and then the mold cavity is injected with plastic. After the injection molding machine completes injection / pressure holding, the mold temperature rises to a cooling set value before opening the mold, thus completing the entire injection process Wait for the next injection cycle.

③ Principle of superheated water assisted molding technology
         Super hot water assisted injection molding is to use high temperature and high pressure hot water to make some parts of the mold reach a very high temperature instantaneously, ensure that the temperature difference between the molding material and the plastic mold is very small, quickly fill the mold cavity, and change the hot water into cold water while the molding material is cooling, so as to quickly reduce the mold temperature, so as to achieve a very high surface quality effect at the local position of the product This paper introduces a new type of auxiliary molding process.
        The specific implementation process is as follows: a constant heating channel is made on the mold. When the injection molding machine closes the mold (the mold can be opened and heated under special circumstances), high-temperature and high-pressure hot water is blown in. First, the mold temperature is raised to a heating set value, and then plastic injection is started into the mold cavity. After the injection molding machine completes injection / holding pressure and turns to cooling, the injection of cold water starts, and the mold temperature drops to a cold one quickly After setting the value, the mold is opened to complete the whole injection process and wait for the next injection cycle.
 
3、 High temperature injection molding equipment non marking

① Steam assisted molding equipment
Under the action of steam thermal effect controller, the high temperature and high pressure steam, cooling water and compressed air are sequentially switched into the mold water path, so as to achieve the whole set of equipment to increase and decrease the temperature of corresponding parts of the mold. It is suitable for large-scale thermochromic traceless injection molding products, such as large flat panel displays or similar products. It is currently the most widely used technology of thermal variable temperature high gloss traceless injection molding system.

② Electrothermal auxiliary molding equipment
Under the action of multi-function electric heating control, the heating elements built in the mould are quickly electrified and heated, so as to raise and lower the temperature of corresponding parts of the mould. It is suitable for small and medium-sized products, such as flat panel display or similar products.

③ Superheated water auxiliary molding equipment
Under the action of superheated water thermal efficiency controller, the high temperature hot water (180 degrees), cooling water and compressed air generated by the water heater are switched into the mold water path in order to increase and decrease the temperature of corresponding parts of the mold.

4、 Advantages of heat variable temperature non marking injection molding technology
The welding line on the surface of the product is eliminated, and the product does not need post painting processing;
Enhance the flow filling effect of raw materials and improve the production efficiency
Improve the surface finish of products to achieve mirror effect;
Solve the floating fiber phenomenon caused by fiber adding products.
        It can be seen that the thermal variable temperature non marking injection molding technology has incomparable advantages compared with conventional injection molding, which makes the technology has a wide range of functions 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. However, for the environmental protection problems increasingly concerned by the country, there are It has important practical significance.
       Our company believes that this technology may become another revolutionary technology direction after gas assisted technology in the near future. At present, many large enterprises have invested their efforts to pay attention to the development of this technology, and their products will involve LCD TV products, computer LCD display products, automobile exterior decoration products, lamps and optical instrument products and many other practical products