Analysis of Mold Design and Manufacturing Development Trend

At present, the development characteristics of the entire mold design and manufacturing industry are mainly product variety, rapid update, and fierce market competition. In order to meet the urgent requirements of users for the short delivery time, high precision and low cost of mold manufacturing, the mold will inevitably have the following development trends:

(1) The mold design progresses from the experience design stage to the theoretical calculation and the calculator-aided design direction. The CAD/CAM/CAE technology is widely used in the mold making industry, making the mold structure more scientific and rational, and greatly improving the mold processing mold machining accuracy. It shortens the die design and processing cycle and reduces product development time.

(2) Development of molds to high-precision large-scale and ultra-small scale. Ten years ago, the accuracy of precision molds was generally 5um, and now it has reached 2-3um, and will soon market 1um of precision molds. With the miniaturization of parts and the improvement of precision requirements, the machining accuracy of some molds is within 1um, which requires the development of super-finishing machining and the reduction of manual operations such as fitters.

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

(4) 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 increase the productivity and quality of parts, and can greatly save the raw materials of the parts. Therefore, the hot runner technology has developed rapidly in foreign countries and has been very common.

(5) With the continuous improvement and development of plastic molding technology, gas-assisted molds and molds that adapt to high-pressure injection molding and other processes will develop along with it. 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 precisions, high-pressure injection molding processes and molds as well as injection compression molding processes and molds will continue to be studied. In injection molding, the biggest factor affecting the molding accuracy is molding shrinkage. High pressure injection molding can reduce the shrinkage of the resin and increase the stability of the plastic size. The mold requires good rigidity and high pressure resistance, especially the cavity of the precision mold should be quenched, the gate sealing is better, 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, and has the advantages of low injection pressure, small deformation of products and easy to form products with large differences in wall thickness, etc., and can save raw materials and improve the productivity of parts. This will significantly reduce costs. Gas-assisted dies have emerged in China and have achieved good results.

(6) The application of mold standard parts will become increasingly widespread. The standardization of molds and the application of mold standard parts can greatly influence the mold manufacturing cycle. The use of standard mold parts can not only shorten the mold manufacturing cycle, but also improve the mold quality and reduce costs. Therefore, the application of mold standard parts will be increasingly widespread, such as plastic, stamping die, ejector pin, screws, springs, etc. Form standard parts.

(7) The prospect of rapid economical molds is very broad. Now is the era of multi-species and small-batch production. In the 21st century, this production method will account for more than 75% of industrial production. On the one hand, the product life cycle is short, and on the other hand, the pattern changes frequently. The shorter the mold production cycle, the better. Therefore, the rapid and economical development of molds has attracted more and more attention. For example, a variety of superplastic materials are developed to make molds, and simple molds are made of reinforcements such as epoxy (E), polyester (P) or filler metal (M), glass (G), etc., using E, P, PM, EG, EGM, and PGM are used to make molds. The main features of these molds are simple manufacturing process, easy control of precision, low shrinkage, low price, and long life. It is also possible to use cement and plastic to make car cover molds. The United States, Japan, and other countries have applications, but they also need to improve and expand the scope of application. Middle and low melting point alloy molds, spray forming molds, electroforming molds, precision casting molds, lamination molds, ceramic blister molds, epoxy molds, and light sculpting molds will be further developed, with quick mold changers and quick change punches And so on, it will also grow. In addition, the rapid die change device and rapid test die device technology using the calculator control and manipulator operation will also be developed and improved.

(8) With the development of lightweight products such as vehicles and motors, the proportion of die-casting molds will continue to rise. At the same time, higher and higher demands will be placed on the life and complexity of die-casting molds.

(9) With the further development of plastic substitute steel and plastic substitute 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 demand for plastic molds will also increase. high.

(10) The technical content of molds will continue to increase, and the proportion of medium and high-grade molds will continue to increase.

In summary, the development prospects of the mold industry are very good. You are interested in the mold industry colleagues, let us learn together to contribute to the country's mold development.