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[Chemical Knowledge]：What is Injection Molding? -- A Comprehensive Analysis from Process to Application

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The principle of
1. injection molding process
injection molding is a pressure on the plastic melt, so that filling and cooling hardening in the mold and molding process. The quality of injection molding products mainly depends on the injection molding machine and mold, in which the injection molding machine is used to process the plastic melt into the molding material, and the mold plays a decisive role in the shape and accuracy of the molded parts. During the injection molding process, pressure is formed on both sides of the mold, so that the molten plastic enters from one side of the mold, removes air through the mold cavity, and then cools, hardens and removes the plastic part. Therefore, the core of the injection molding process is to accurately design the plastic feeding system, gating system, cooling system and exhaust system during the mold construction process to ensure the uniformity of the melt flow and meet the molding requirements.
Types of
2. Injection Molding Equipment

In addition to injection molding machines, injection molding equipment also includes feeders, dryers, coolers, central feeding and recycling systems, etc. Under normal circumstances, the injection volume of the injection molding machine and the structure of the injection molding head and the holding pressure mechanism have a decisive influence on the quality of the molded parts. At present, the main injection molding machine has three forms: manual, semi-automatic and automatic. Among them, manual injection molding machine is mainly used for small batch production, semi-automatic machine is suitable for the production of small and medium-sized enterprises, and automatic injection molding machine is the mainstream equipment in the current mold manufacturing industry.

the steps of the 3. injection molding process The basic steps of the

injection molding process include: melting the plastic, injecting the plastic, extruding the plastic, filling the cavity, cooling, demolding and removing the gate, separating and processing the part. In the process, it is necessary to pay attention to factors such as the heating temperature of the plastic, the pressure and time of injection and holding pressure, and the cooling speed and time of the mold. In addition, it is necessary to determine the molding method of the material, select the appropriate mold and adjust the parameters of the mold according to the structural characteristics of the injection molded product. The entire process requires constant testing and adjustment to ensure that the molded parts meet the desired quality standards.

4. injection molding products are widely used

injection molding technology is widely used in modern industrial production, including auto parts, household appliances, toys, medical equipment, electronic equipment and other fields are the main application areas of injection molding. With the advancement of science and technology, injection molding technology is constantly innovating and developing, and various new injection molding materials, molding machines and molds are constantly emerging, providing more and better choices and solutions for various industries.

summary:

injection molding technology as an important molding technology, has become an irreplaceable part of today's industrial manufacturing industry. In addition to greatly improving production efficiency and improving the yield of the production line, it can also effectively reduce the production scrap rate and reduce production costs. It has a wide range of application prospects in the automotive, electronic and electrical, chemical, construction, medical and other industries. In addition, the degree of automation also lays the foundation for the upgrading of production lines and the realization of networking. The future of injection molding technology will promote the development of global technology and manufacturing by leaps and bounds with higher precision, greater degree of automation and more high quality molded products.