Classification and use of injection molding machine
Injection molding machine has the ability to form complex shape, precise size or dense plastic products with metal inserts at one time. It is widely used in various fields of national defense, electromechanical, automobile, transportation, building materials, packaging, agriculture, culture, education, health and People’s Daily life. With the rapid development of the plastic industry, injection molding machine occupies an important position in both quantity and variety, and its total production accounts for 20%- 30% of the whole plastic molding equipment, thus becoming one of the fastest growing plastic machinery and the largest number of production machines. According to relevant statistics, from 1996 to 1998, China exported 8383 sets of injection molding machines and imported 42959 sets of injection molding machines. In 1998, China produced 20,000 sets of injection molding machines, and its sales accounted for 42.9% of the total sales of molding machines.
There are many injection molding machine manufacturers in China, according to incomplete statistics, there are more than 2000.The structure of injection molding machine has two kinds: vertical and horizontal. According to the products produced can be divided into ordinary and precision injection molding machine. A dose of 45-51000g; Clamping force 200-60000kN; Processing raw materials are thermosetting plastics, thermoplastics and rubber three kinds. Thermoplastics include polystyrene, polyethylene, polypropylene, nylon, polyurethane, polycarbonate, plexiglass, polysulfone and (acrylonitrile/butadiene/styrene) copolymer (ABS), etc. From the processing of products, there are monochrome, two-color general and precision plastic products. The main manufacturers of the above products have their own series, each with its own characteristics.
The general horizontal injection molding machine is still the leading direction of injection molding machine development, its basic structure is almost no big change, in addition to continue to improve its control and automation level, reduce energy consumption, according to the changes in the market manufacturers are to the direction of combination series development. As the injection molding machine of one type is equipped with large, medium and small injection devices, which are combined into standard type and combined type, increasing flexibility, expanding the scope of use and improving economic benefits.
