Injection molding machine management and maintenance
The injection molding machine has a dense plastic product that can be molded in a complex shape, accurate in size or with metal inserts. It is widely used in national defense, electromechanical, automotive, transportation, building materials, packaging, agriculture, culture and health, and daily life. All areas of life. The injection molding process has good adaptability to the processing of various plastics, high productivity, and easy automation. In the rapid development of the plastics industry, injection molding machines occupy an important position in terms of quantity and variety, and thus become one of the fastest growing and most productive models of plastic machinery.
China's plastic processing enterprises, Luo Luobu, all over the country, the technical level of equipment is uneven, most of the processing equipment needs technical transformation. In recent years, the technological progress of China's plastic machine industry has been remarkable. In particular, the gap between the technical level of injection molding machines and foreign famous brand products has been greatly reduced, and significant improvements have been made in terms of control level, internal quality and appearance of products. The choice of domestically produced equipment, with a small investment, can also produce products of comparable quality to imported equipment. These have created conditions for the technological transformation of enterprises.
To have good products, you must have good equipment. The wear and corrosion of the equipment is a natural law. When people master this law, it can prevent or reduce the wear and corrosion of the equipment, extend the service life of the equipment, and ensure the integrity of the equipment.
In order to strengthen the use, maintenance and management of plastic machinery, relevant departments of China have formulated relevant standards and implementation rules, requiring all equipment management departments and production enterprises to “scientific management, correct use, reasonable lubrication, and management of equipment. Careful maintenance, regular maintenance, planned maintenance, improve equipment integrity, so that equipment is always in good condition.
Plastic injection molding technology was developed from the end of the 19th century to the beginning of the 20th century according to the principle of die casting. It is one of the most commonly used methods in plastic processing. This method applies to all thermoplastics and some thermoset plastics (about 1/3 of the total amount of plastics).
1.1 Working principle of injection molding machine
The working principle of the injection molding machine is similar to that of the syringe for injection. It is to inject the plasticized molten state (ie, the viscous flow state) into the closed cavity by the thrust of the screw (or plunger). The process of obtaining the product after curing and setting.
Injection molding is a cyclic process, and each cycle mainly includes: quantitative feeding - melt plasticizing - pressure injection - filling mold cooling - mold extraction. After removing the plastic part, the mold is closed again for the next cycle.