At present, there are many manufacturers of injection molding machines in China, according to incomplete statistics, there are more than 60. The structural forms of injection molding machines are vertical and horizontal. According to the products produced, it can be divided into ordinary injection molding machine and precision injection molding machine. One injection dose is 45-51000 g; The clamping force is 200-36000 kn；; ; Processing raw materials include thermosetting plastics, thermoplastics and rubber. Thermoplastics include polystyrene, polyethylene, polypropylene, nylon, polyurethane, polycarbonate, plexiglass, polysulfone and (acrylonitrile/butadiene/styrene) * * * polymer (ABS), etc. From the perspective of processed products, there are monochrome and bicolor general and precision plastic products. The main manufacturers of the above products have their own series, each with its own characteristics. For example, Jieba CJ series injection molding machines produced by Guangdong Zhende Plastic Machinery Factory Co., Ltd. have two forms of numerical control and computer control for each specification. Another example is the HTF80X-HFT3600X series injection molding machine produced by Zhejiang Ningbo Haitian Machinery Co., Ltd., which can be used to produce various high-precision thermoplastic products. The machine adopts linear motion sensor to control injection, clamping and ejection, adopts multi-CPU electronic control system, displays with large-format color LED, and is automatically controlled by computer.

Ordinary horizontal injection molding machine is still the dominant direction of injection molding machine development, and its basic structure has hardly changed. In addition to continuously improving its control and automation level and reducing energy consumption, manufacturers are also developing in the direction of combination serialization according to market changes. Just as the same model of injection molding machine is equipped with large, medium and small injection devices, it is combined into standard and combined type, which increases flexibility, expands application scope and improves economic benefits. ?

In recent years, injection molding machine manufacturers in industrialized countries all over the world are constantly improving the function, quality, supporting capacity of auxiliary equipment and automation level of ordinary injection molding machines. At the same time, we will vigorously develop large injection molding machines, special injection molding machines, reaction injection molding machines and precision injection molding machines to meet the needs of producing plastic alloys, magnetic plastics and plastic products with inserts.

At present, the injection molding machine is one of the fastest developing plastic machinery in China, and the gap with developed countries is very small. But it mainly refers to ordinary injection molding machines, and some products are still blank in most varieties of super-large, special, special and precision injection molding machines, which is the main gap with developed countries.