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Plastic mold industry has huge development space

At present, my country's plastic consumption ranks first in the world, but per capita consumption is only 1/7 of that of industrially developed countries and 1/4 of that of moderately industrialized developed countries. It shows the huge development space of my country's plastic industry and plastic mold industry.

The status quo and development prospects of the automotive stamping die industry!

　Automobile stamping die is an important process equipment for automobile production. Its design and manufacturing time accounts for about 2/3 of the automobile development cycle, and it is one of the main constraints for automobile replacement. Automobile stamping dies have the characteristics of large size, complex working surface and high technical standards, and are technology-intensive products. In the past, automotive stamping dies generally adopted the structural design of single-process dies and composite dies. With the advancement of technology and the improvement of equipment levels, multi-station dies and progressive dies that can reduce costs and improve production efficiency are gradually applied to automotive stamping dies. In design and manufacture, it has become the development direction of automobile stamping die manufacturing technology.

About one third of the output value and consumption of the global mold industry is contributed by China

　According to the statistics of the China Mould Industry Association, in 2018, China's mold exports were US$6.085 billion, an increase of 10.8% over the previous year, accounting for a quarter of the total global mold exports, and exports were exported to about 200 countries and regions around the world, and the top five exports were The markets are the United States, Germany, Hong Kong, Japan and Mexico; the import of molds is 2.14 billion US dollars, a year-on-year increase of 4.3%, accounting for one-eighth of the total global mold imports, and the top five import markets are Japan, South Korea, and Germany. , Taiwan and the United States.

New Technology of Plastic Mould Design and Manufacturing

Plastic molds occupy a very important position in plastic processing. The level of mold design and manufacturing also reflects the industrial level of a country. In recent years, the output and level of plastic molding molds have developed very rapidly, with high efficiency, automation, large-scale, precision , The proportion of long-life molds is increasing. The following summarizes the development status of molds from the aspects of mold design, processing methods, processing equipment, and surface treatment.

Temperature control in injection molding process

⒈ Barrel temperature: The temperature that needs to be controlled in the injection molding process includes barrel temperature, nozzle temperature and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, while the latter temperature mainly affects the flow and cooling of plastics. Each plastic has a different flow temperature. For the same plastic, due to different sources or grades, its flow temperature and decomposition temperature are different. This is due to the difference in average molecular weight and molecular weight distribution. The plasticizing process in the machine is also different, so the selection of the barrel temperature is also different.

Problems that are easily encountered in the processing of plastic molding molds

Plastic molding molds are used to produce large-scale injection molded parts with the advantages of high efficiency, good quality, less cutting, saving energy and raw materials, and low cost. However, due to the complex processing process of plastic molding molds, there will be many problems. This chapter will introduce plastics. Problems that are easily encountered in the processing of forming molds.