At present, the development of the entire industrial production is characterized by a large variety of products, rapid updates, and fierce market competition. In order to meet the user's urgent requirements of short delivery time, high precision and low cost for mold manufacturing, molds will inevitably have the following development trends:

(1) The mold design develops from the empirical design stage to the theoretical calculation and calculator-aided design;

(2) CAD / CAE / CAM technology is widely used in the mold making industry, making the mold structure more scientific and reasonable, greatly improving the mold processing accuracy, shortening the mold design and processing cycle, and reducing product development time;

(3) Multifunctional composite molds will be further developed;

(4) Multi-color and multi-material plastic molding molds will also develop rapidly. This mold shortens the production cycle and assembly cycle of the product, and will be developed and applied in different fields in the future;

(5) With the development of hot runner technology, the proportion of hot runner molds in plastic molds will gradually increase. Because the hot runner technology can improve the productivity and quality of the parts, and can greatly save the raw materials of the parts, the hot runner technology has developed rapidly abroad and is very common;

(6) With the continuous improvement and development of plastic molding technology, gas-assisted molds and molds adapted to high-pressure injection molding and other processes will develop accordingly. The accuracy of plastic parts is divided into three types: dimensional accuracy, geometric accuracy, and appearance accuracy (ie, gloss, hue, etc.). In order to achieve these accuracy, we will continue to study the high pressure injection molding process and mold, and injection compression molding process and mold.

In injection molding, the biggest factor affecting molding accuracy is molding shrinkage. High-pressure injection molding can reduce the shrinkage of resin and increase the stability of plastic size. The mold requires good rigidity and high pressure resistance, especially the cavity of the precision mold should be quenched, the sealing of the gate should be good, and the mold temperature should be accurately controlled.

Gas-assisted molding technology is relatively mature. It can improve the internal and external quality of plastic parts. It has the advantages of low injection pressure, small deformation of the product, and easy to form products with large differences in wall thickness. Moreover, it can save raw materials and improve product productivity. , Thereby significantly reducing costs.

(7) With the development of lightweight products such as vehicles and motors, the proportion of die-casting molds will continue to rise, and at the same time, the requirements for the life and complexity of die-casting molds will become higher and higher.

(8) With the further development of plastic instead of steel and plastic instead of wood, the proportion of plastic molds will continue to increase. At the same time, due to the increasing complexity and precision of mechanical parts, the requirements for plastic molds will also increase. high. The technical content of molds will continue to increase, and the proportion of medium and high-end molds will continue to increase.

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