With the development of products and molding processes, molding equipment is also constantly innovating and developing. The development focus of modern injection molding machines is to improve the control level and the degree of automation of the whole machine, as well as the optimization design of the whole machine and the improvement of processing technology. Injection molding machine quality and energy saving requirements. The development trend of modern injection molding machine can be summarized as the following points.

　　 (1) Function specialization and low cost In production practice, due to the different shapes of products and plastic varieties, there are often some special requirements for injection machines. For example, in terms of products, some have inserts, some have no inserts, some are single-color, and some are two-color; from the plastic varieties, some are thermoplastics, and some are thermosetting plastics. Therefore, the development of special and special injection machines suitable for user requirements has the characteristics of high cost performance, technology intensive and simplified structure. For example, gas-assisted injection equipment, fusible core injection equipment, magnet and metal powder injection machines, etc.

　　 (2) The high-speed, high-efficiency and precise opening and closing mold speed is fast. The opening and closing speed of the mold is increased from 2030mm/min to 4050mm/min, and some even up to 60mm/min. The injection speed is fast, from 100mm/s to 450mm/s. It is not uncommon for the injection speed of small and medium-sized injection machines to reach 600mm/s, and some can reach 900mm/s.

　　 focuses on small and medium-sized injection machines, and develops large and super large and even giant and micro injection machines at the same time. Large injection machines with clamping forces of 40 MN, 50 MN, and even greater have been introduced. An injection machine with a clamping knife of 50MN manufactured by the original West Germany has an injection volume of 24.5kg and an injection pressure of 140370MPa. The large injection machine manufactured by Japan's famous machine manufacturer has a clamping force of 120MN. At present, the molding accuracy of ordinary, precision and ultra-precision injection machines has reached 0.020.05mm, 0.010.02mm and less than 0.001mm.

　　 (3) Automated and automated production is an important way to ensure product quality, increase productivity, reduce labor intensity, improve labor conditions, give full play to equipment utilization, and reduce costs. At present, many new control devices are used, such as programmable controllers (PLC) to replace traditional relays and programmers. The work is reliable and the program can be modified flexibly. The microcomputer has been used for the process control and process parameter control of the injection machine. This new control method is particularly important for molding precision products. It can automatically adjust the molding conditions to ensure the size and quality of the products. For machines that produce general products, the production process from feeding to taking out the inspection and packaging of the products is also carried out automatically. The safety of the machine is guaranteed by the safety device, which not only can be automated, but also can be centrally managed to achieve unmanned operation.

(4) Other mechanical structure design adopts advanced methods, ideas and methods. The clamping mode is mainly toggle and direct pressure. The mold clamping mechanism is improved to form a standardized series; the appearance and shape of the host are optimized for design, noise reduction, and injection machine The standardization and serialization of supporting equipment and the modularization of injection machines and the development of environmentally friendly injection machines have attracted the attention of injection machine manufacturers.