In recent years, the world-famous hot runner technology suppliers have entered the Chinese market in various ways, showing the huge development potential of China’s hot runner mold market. At the same time, this trend is also playing a huge role in promoting the rapid improvement of China’s mold industry technology. A large number of emerging private enterprises in China also recognize the unlimited business opportunities in this field and have established hot runner production enterprises. This is of great significance for reducing the use cost of hot runner technology and speeding up the application. However, in general, most of the technologies that local enterprises in China can provide are still relatively primitive.
The choice of Plastic mould manufacturers space is small, the quality is unstable, and the maintenance period is short, which often affects the trust of downstream enterprises in their products. Therefore, the development of national standards for hot runner components, the active production of inexpensive and high-quality components, and the promotion of hot runner technology are the key to the development of domestic hot runner molds. Unlike traditional molds, modern molds are not only complex in shape and structure, but also have higher technical requirements. It is obviously difficult to manufacture with traditional mold manufacturing methods. It is necessary to rely on modern science and technology and advanced manufacturing techniques to meet technical requirements. At present, the development of the whole industrial production is characterized by many varieties of products, fast update, and fierce market competition. In order to meet the urgent requirements of the market for short delivery time, high precision and low cost, the cavity mold will have the following development trends:
Increase the proportion of plastic molds: With the continuous improvement of the performance of plastic raw materials, the parts of various industries will be replaced by plastics, and the process of plastic substitution of wood will be further accelerated, and the proportion of plastic molds will increase. Second, increase the accumulation of molds and powder forging: due to the development of lightweight products such as automotive, vehicles and motors, such as aluminum-based steel, non-full density molding, polymer materials, composite materials, engineering ceramics, superhard material molding and processing . The adoption of new materials not only changes the structure and performance of the product, but also proves a fundamental change in the production process. Correspondingly, liquid (semi-solid) extrusion dies and powder forging dies have emerged. The manufacturing precision of these molds is high. Third, vigorously develop rapid manufacturing molds: At present, it is the era of multi-variety and small-batch production. On the one hand, the product life cycle is shortened, on the other hand, the varieties are updated quickly, which requires the mold production cycle to be as short as possible. Therefore, rapid prototyping molds will increasingly attract people’s attention and attention. Fourth, the increasing number of high-grade molds: one is used for nano-scale precision machining of automobiles, airplanes, precision machinery; the other is sub-micron (0.01μm) precision machining for disk and drum manufacturing; the third is for ultra-precision Nano-scale (0.001μm) precision machining of electronic devices. Further increase the gas-assisted mold and high-pressure injection molding mold. With the continuous improvement and development of the plastic molding process, in order to improve the injection quality, gas-assisted molds and high-pressure injection molding molds have also developed. Fifth, the increasingly high mold accuracy: 10 years ago, the precision mold is generally 5μm, now it has reached 2~3μm, and soon the 1μm mold will also be on the market. With the miniaturization of parts and the improvement of precision requirements, some molds are processed. Accuracy is required to be within 1 μm, which requires the development of super finishing. Sixth, the expansion of the application of hot runner technology: because the hot runner technology of the mold can improve the production efficiency and quality of the parts, and can greatly save the raw materials of the parts, therefore, the application of hot runner technology is developing faster in foreign countries, many plastics More than 50% of the molds produced by the mold factory use hot runner technology, even more than 80%, the effect is very obvious. Hot runners have also been used in production in China, and some companies have used 20% to 30%.
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