What is Ejection Molding?
The process to get injection molded products is called injection molding, or called injection. Injection molding is an important method in polymer molding processing, it is characterized by a short molding cycle and high production efficiency, it can produce complex shapes and precise dimensions at one time, it has strong molding adaptability, a wide range of products, and it is easy to realize automatic production, because of its wide range of applications.
The basic process of injection molding: the granular polymer material (hereinafter referred to as plastic material) is heated and extruded by the screw of the injection molding machine to become a molten melt, it enters into the injection barrel, runner and gate to mold cavity and core side, the result of injection molding is to produce plastic parts that meet requirements.
The mold must have a well-designed and well-manufactured mold, advanced equipment and reasonable injection parameter to make qualified products, so people often make as the 3 elements by mold , injection molding machine and injection molding process as the three basic elements for the perfect injection molding process.
As one of the main tools of injection molding, the mold quality, precision, manufacturing time and production efficiency in the injection molding process affects the product quality, output, and product cost directly, and also ultimately determines the company’s reaction speed to market competition.
USM specializes in plastic precision injection mold and injection molding with over 16 years of experience, the ability to produce mold at the high international standard, strong engineering and design capability, aggressive lead time and competitive price continues to be the success factor of USM.
The sub gate of the plastic injection mold runner system
Jan 26, 2022In order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among...viewThe air trapping position in cavity and exhaust method
Mar 2, 2022The air trapping in cavity is usually in the following places: 1. Thin-wall structure cavity, the end of melt flow; 2. The junction of two or more melts; 3. The last area where the melt in the cavity...viewGate position determination of plastic injection mold runner design system
Jan 17, 2022In the selection of gate location, the following issues should be paid attention to: 1. The gate position should be set at the maximum wall thickness of the plastic part, so that the plastic melt...viewSlider designing tips 1
Aug 3, 20221. After the slider core pulls out, the length of staying in the guide pin slot should not be less than 2/3 of the total length of the slider, for special cases, the slider slot can be partially...viewPlastic injection mold common cooling gate
Feb 17, 20221. Straight-through cooling water gate: the straight-through cooling gate is the most commonly used gate for plastic injection mold, and it is also the most convenient type of cooling for processing....viewPlastic injection mold runner system design points
Jan 9, 2022When designing the gating system, Firstly, we should consider making the plastic melt fill the cavity with core side quickly to reduce pressure and heat loss; secondly, it should be economically...view