The development of plastic molds has evolved with the development of the plastic industry. In recent years, the plastic mold industry has been operating at a high level and has developed rapidly. Luo Baihui, the head of the International Mould and Plastic Suppliers Association, said that in recent years, people have become more and more demanding on the light weight, beauty and feel of various equipment and supplies, providing a broader market for plastic products. The development of the plastic mold industry has entered The season.
Plastic molds account for more than 40% of the total molds, including plastic molds for large injection molds for automobiles and home appliances, precision plastic molds for integrated circuits, multi-layer, multi-cavity, multiple for electronic information industry and machinery and packaging Material, multi-color precision injection molds, plastic profile extrusion molds for new building materials and water-saving agriculture, pipes and nozzle molds, etc. In view of the current gap between the domestic plastic mold technology level and foreign countries, the total supply is in short supply, and the annual imports amount to hundreds of millions of US dollars. Major user industries for communications and other plastic products.
Molded parts of plastic molds exhibit high precision, high complexity, high consistency, high productivity and low consumption. The processing and manufacturing methods of plastic molds have their unique creative value. To a large extent, plastic molds determine the quality, efficiency and development capabilities of products. Luo Baihui believes that as my country’s plastic mold industry becomes larger and larger, the accuracy will become higher and higher. Ten years ago, the precision of precision molds was generally 5μm, and now it has reached 2~3μm. Soon, 1μm precision molds will be available. With the miniaturization of parts and the improvement of precision requirements, the tolerance of machining precision of some plastic molds is required to be below 1 μm, which requires the development of ultra-precision machining.
With the increasing popularization and application of hot runner technology in China, the proportion of hot runner molds in plastic molds will gradually increase. The plastic mold using hot runner technology can improve the productivity and quality of the parts, and can also save the raw materials of the parts. The application of this technology has developed rapidly abroad. Domestic hot runner molds have also been produced, and some companies have reached about 30%, but in general, the proportion is still very low and needs to be developed urgently. Luo Baihui said that the proportion of die-casting molds in the plastic mold industry will continue to increase. With the development of products such as vehicles and motors in the direction of light weight, the number, life and complexity of die-casting molds will raise higher and higher requirements. With the development of replacing steel with plastics and wood with plastics and the continuous improvement of the precision and complexity of product parts, the proportion of plastic molds will continue to increase, and the precision and complexity will also increase accordingly.
my country’s plastic mold industry should further develop multi-functional composite molds. In addition to stamping and forming parts, a multi-functional mold is also responsible for assembly tasks such as stacking, tapping, riveting and locking. Multi-color and multi-material plastic forming molds will also develop rapidly. This plastic mold shortens the production cycle of products, and will be developed and applied in different fields in the future.