Injection molding, as a plastic processing method, has many advantages and is widely used in industrial production. The process flow includes steps such as mold preparation, raw material melting, injection, cooling, and mold opening. Injection molding not only improves product quality and production efficiency, but also has a positive impact on environmental protection and sustainable development. With the development of technology and the improvement of processes, injection molding will have broader development prospects in the future.
In the process of injection molding, equipment and materials such as injection molding machines, molds, and plastic particles need to be used. Injection molding machines can be selected from different types according to different needs, mainly including vertical injection molding machines and horizontal injection molding machines. Mold is the key to injection molding, and its design and manufacturing directly affect the quality and appearance of the final product. Plastic particles are usually made of polymers, and different plastic materials can be selected according to different needs, such as polypropylene, polyethylene, polyvinyl chloride, etc.
Understand common defects and improvement methods in Dalian injection molding process
First, it's a short shot. Short shot refers to the incomplete flow of plastic during injection molding, resulting in some or the entire product surface not being able to fill the mold cavity. The reasons for short shots may be insufficient material melt temperature, improper mold temperature adjustment, and excessively fast injection molding speed. The methods to improve short shot include increasing the melt temperature, adjusting the mold temperature, and appropriately reducing the injection speed.
Next is bubbles. Bubbles refer to small cavities formed by gas trapped in plastic on the surface or inside of a product during injection molding. The generation of bubbles may be related to factors such as the presence of volatile components in the material, poor mold ventilation, and the excessively fast dispensing speed of the injection molding machine. The methods to improve bubbles can be achieved by optimizing material composition, adjusting the mold ventilation system, and reducing the dispensing speed of the injection molding machine.
Once again, there are burrs. Burr refers to irregular protrusions or depressions on the surface of a product, usually caused by improper mold design, material flow obstruction, and other reasons. The methods for improving burrs include optimizing mold design, improving the ventilation performance of the flow channel, and increasing the fluidity of the material.
Injection molding is widely used in fields such as automobiles, electronics, home appliances, industrial equipment, etc., and produces a wide variety of plastic parts, including shells, connectors, spare parts, etc. Injection molding has great economic and social benefits in industrial production, improving product quality and production efficiency, and reducing production costs. At the same time, injection molding also has a positive impact on environmental protection and sustainable development, as it can recycle and reuse waste plastics.
Injection molding has many advantages. Injection molding can produce complex shaped products, from simple daily necessities to complex industrial products, which can be manufactured through injection molding. Secondly, the production speed of injection molding is relatively fast, and a single injection cycle can be completed within seconds to minutes, resulting in high production efficiency. In addition, as injection molding is produced through molds, the size and shape of the product can achieve high consistency and accuracy.
