Mold Manufacturing Urgently Needs To Break Through The Traditional Concept!

CAD/CAE/CAM technology, namely computer-aided manufacturing technology, is an important advanced mold manufacturing technology and a key technology for transforming traditional molds with high technology. In recent years, this technology has been applied by many domestic plastic mold enterprises, greatly shortening the mold design cycle, improving the quality of mold making and the manufacturing capacity of complex molds. However, at present, there are still many enterprises who have insufficient understanding of this and are reluctant to use them, resulting in the inability to adapt to the requirements of mold replacement and quality improvement. Therefore, it is necessary to vigorously promote and popularize the computer-aided design technology of plastic molds.

Compared with other mechanical products, one of the important features of molds is high technical content and a large proportion of net output value. The rapid development of the plastics industry has made my country's plastic molds develop rapidly at a rate higher than the overall development rate of the mold industry. In recent years, the growth rate has been maintained at a level of more than 15%. As the application fields of plastic products are getting wider and wider, and the requirements for molds are getting higher and higher, the traditional mold design method has been unable to meet the requirements of upgrading and improving the quality of plastic products.

Although my country's plastic molds have made great progress, at present, my country's plastic molds still rely on low prices to win in the international market. Most high-end plastic molds rely on imports. The mold accuracy, cavity surface roughness, production cycle, life and other indicators are in line with foreign advanced Compared with the level, there is still a big gap. The proportion of precision machining equipment in mold processing equipment is still relatively low, the popularity of CAD/CAE/CAM technology is not high, and many advanced mold technologies are not widely used.

In my country, most plastic mold enterprises still use traditional production methods, that is, before formal production, designers express the product in two-dimensional plane drawings with experience and intuition. After the mold is assembled, repeated mold testing is required, which not only increases production It also prolongs the product development cycle, and the mold production relies too much on experience, making the product quality extremely unstable. The new CAD integration technology can display all aspects of mold manufacturing, such as plastic product modeling design, mold structure design and analysis, mold CNC machining, polishing and mold matching, and rapid prototyping manufacturing, using computer simulation to display, greatly shortening the time. The design and manufacturing cycle of the mold is reduced, the risk of mold design is reduced, the debugging cost is reduced, and the quality of the plastic mold is guaranteed.

Using CAD technology to design plastic molds, the designer can directly establish a three-dimensional model of the product on the computer, simulate and analyze the entire injection molding process on the computer, and accurately predict the filling, pressure holding, cooling of the melt, and the stress in the product. Distribution, molecular and fiber orientation distribution, product shrinkage and warpage deformation, etc., not only can quickly improve design efficiency, but also dynamically simulate and analyze the flow of plastic in the injection mold cavity during the injection process, analyze temperature and pressure changes, etc., check The rationality of the mold structure and the rationality of the flow state, so that the designer can find the problem as soon as possible, modify the part and mold design in time, and eliminate the error in the design stage, instead of waiting for the mold to repair the mold, so as to improve the one-time mold trial Success rate, avoid mold repair and scrap, ensure quality and reduce costs. Many standard parts in the mold can be designed by CAD modeling design method, which can not only realize data sharing, but also meet the needs of users to modify at any time, so that the design and analysis of the mold can be fast, accurate and efficient. This is a breakthrough in the mold design method and has great technical and economic significance.

In recent years, in order to enhance competitiveness, many plastic mold enterprises in my country have increased investment in mold manufacturing, introduced new technologies, and established manufacturing centers, but CAD technology is still not widely used, which makes domestic high-end, precision, large-scale plastic mold production. Serious shortage, these molds still need to be imported in large quantities every year, but the supply of medium and low-grade plastic molds with low technical content is oversupply.

Looking at the plastic mold production in developed countries, it has already achieved no graphics, relying on computer design methods such as CAD/CAE/CAM to achieve a precise and fast mold production mode, and CAD technology has formed a huge productivity. Reforming the traditional design concept and operation mode, transforming traditional technology with advanced CAD/CAE/CAM technology, and improving the level of plastic mold design and manufacturing should be an inevitable trend for my country's plastic mold enterprises to change the current product structure.