According to the production process of plastic products, plastic machinery can be divided into four categories: plastic compounding machinery, plastic molding machinery, plastic secondary processing machinery and plastic processing auxiliary machinery or devices. Plastic compounding machines are used for the manufacture of various forms of plastic compounds, including kneaders, mills (open mills and mixers), pelletizers, screening machines, crushers and grinders. Plastic molding machinery, also known as plastic primary processing machinery, is used to form plastic semi-finished products or products, including compression molding machines, injection molding machines, extrusion molding machines, blow molding machines, calendaring machines, rotomoulding machines, and foaming machines. Plastic secondary processing machines are used for reprocessing and post-processing of plastic semi-finished products or products, including thermoforming machines, welding machines, heat sealing machines, hot stamping machines, vacuum evaporation machines, flocking machines, printing machines, etc. Metal processing machines are also commonly used for secondary plastic processing. The plastic processing auxiliary machinery or device is used to rationalize the plastic processing process, including automatic metering feeding device, automatic scrap recycling device, automatic injection product injection device, rapid injection mold replacement device, injection mold cooling machine, automatic thickness measuring device and raw materials Transportation and storage equipment. Such auxiliary machinery or devices have become an indispensable part of the automation of modern plastics processing.
The degree of sophistication of plastic machinery directly affects the quality, yield, and cost of plastic semi-finished products or products, and must therefore be able to adapt to changes in the temperature and stress of the plastic compounding and processing process, as well as the resulting changes in the properties of the molten material, and to adapt to chemical corrosion. And special conditions such as mechanical wear. The specialization of plastic grades, the development of engineering plastics, the emergence of composite materials, the enlargement of plastic products, the development of lightweight and thin-walled technologies, etc., require that plastic machinery achieves the goal of achieving product production goals; high-speed, labor-saving, and automation In order to improve product production efficiency; to ensure product specifications and quality of the smallest degree of precision; low energy consumption, small footprint, easy operation and maintenance and safety.