The hottest plastic mold develops according to the

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Plastic mold should be developed according to the needs of the industry

the development of plastic mold is developed with the development of plastic industry. In recent years, people have higher and higher requirements for lightweight, beautiful and hand feel of various equipment and supplies, which provides a broader market for plastic products. The development of plastic products inevitably requires the development of plastic molds

plastic molds account for more than 40% of the total number of molds, including large-scale injection molds supporting automobiles and household appliances, precision plastic molds supporting integrated circuits, multi-layer, multi cavity, multi-material, multi-color and dense injection molds covering an area of 110 Mu supporting electronic information industry, machinery and packaging, plastic profile extrusion molds and pipe and nozzle molds supporting new building materials and water-saving agriculture. However, there is still a big gap between the current technical level of plastic molds and foreign countries, and the total amount is also in short supply, with imports reaching hundreds of millions of dollars every year. Therefore, during the "Eleventh Five Year Plan" period, we should focus on development. The major user industries of plastic products such as automobiles, household appliances, office supplies, industrial appliances, building materials and electronic communications have been operating at a high level and developing rapidly in recent years. Therefore, plastic mold is also developing rapidly, and China's plastic mold industry is becoming larger and larger

the parts formed by plastic mold show high precision, high complexity, high consistency, high productivity and low consumption. The processing and manufacturing method of plastic mold has its unique creative value. Plastic mold determines the quality, benefit and development ability of products to a great extent. Some industry experts believe that with the increasing scale of China's plastic mold industry, the accuracy will also be higher and higher. Ten years ago, the precision of precision molds was generally 5 μ m. Now it has reached 2-3 μ m。 Soon, 1 μ M precision mold will be on the market. With the miniaturization and refinement of parts (2) determination of yield limit of low carbon steel σ S and strength limit of cast iron σ With the improvement of B degree requirements, the machining accuracy tolerance of some plastic molds is required to be within 1 μ M below, which requires the development of ultra precision machining

experts believe that China's plastic mold industry should further develop multi-functional composite molds. In addition to stamping parts, a set of multi-functional molds also undertake the assembly tasks of lamination, tapping, riveting and locking. Polychromatic and multi-material plastic forming dies will also have a rapid development in tensile deformation of varying degrees for all specimens between the two fixtures. This kind of plastic mold shortens the production cycle of products and will be developed and applied in different fields in the future

with the increasing popularization and application of hot runner technology, the proportion of hot runner mold in plastic mold will gradually increase in China. The plastic mold with hot runner technology can improve the productivity and quality of parts, and also save the raw materials of parts. The application of this technology has developed rapidly in foreign countries. Domestic hot runner molds have also been produced, and some enterprises have reached about 30%, but on the whole, the proportion is still very low and urgently needs to be developed

Chinese plastic mold experts believe that the proportion of medium pressure molds in the plastic mold industry will continue to increase. With the development of vehicles, motors and other products in the direction of lightweight, there will be higher and higher requirements for the number, life and complexity of die-casting molds. 5. Ball screw. With the development of replacing steel and wood with plastics and the continuous improvement of the accuracy and complexity of product parts, the proportion of plastic molds will continue to increase, and their accuracy and complexity will also increase accordingly

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