What is Injection Molding?
Injection molding refers to the method of injecting the heated and molten material into the mold, and after cooling and solidifying, the molding quality is obtained. The specific process is that the granular or powdery plastic is fed from the hopper of the injection molding machine into the heated barrel, heated and plasticized into a molten state, and injected into a low-temperature, closed mold through the nozzle at the end of the barrel by the screw pressure. The cavity is cooled and hardened to maintain the shape given by the cavity, and a working cycle is completed after the mold is opened and the colloid is taken out.
Injection molding is a commonly used method in plastic molding processing. It is suitable for all thermoplastics (thermoplastics: a class of plastics that can be repeatedly heated, melted and cooled to harden within a specific temperature range, such as ABS, PP, PE, PC, PA, etc.). , POM) and some thermosetting plastics, most parts of plastic plastic products are manufactured by injection molding. The molding cycle of injection molding is short (several seconds to minutes), and the mass of the molded product can range from several grams to tens of kilograms. Therefore, the method has strong adaptability and high production efficiency.
|
Injection molding, also known as injection molding, is a molding method of injection and molding. The advantages of the injection molding method are that the production speed is fast, the efficiency is high, the operation can be automated, there are many varieties of colors, the shape can be from simple to complex, the size can be from large to small, and the size of the product is accurate, the product is easy to replace, and it can be formed into complex shapes. Parts, injection molding is suitable for mass production and complex shape products and other molding processing fields. The downside is that the cost of the mold is high and the cleaning is difficult, so it is not suitable for small batches to be formed by this method. Products formed by this method include: TV casings, semiconductor radio casings, electrical connectors, knobs, coil frames, gears, car lampshades, tea cups, rice bowls, soap boxes, bathtubs, sandals, etc.
|
Advantages of Injection Molding
|
1. The wall thickness distribution of the parison can be precisely controlled by the injection mold, so that the wall thickness of the obtained container is relatively uniform, avoiding the thinning phenomenon that is easy to occur in the corners of general blow-molded products, and the weight of the product can be adjusted. Controlled at +0.1g, the precision of the thread can be controlled within the range of 100µM, the size of the mouth is accurate, and the forming precision of thin neck products is high;
|
