Introduction to several major systems of injection molds, basic structure of plastic molds
Date: September 12, 2024
Plastic molds are an important tool widely used in the production of plastic products. Its design and structure have a crucial impact on the quality and production efficiency of the product. In plastic molds, different systems work together to complete the molding process of plastic products. The functional structure of the plastic mold system mainly consists of six major systems: pouring system, temperature control system, molded parts system, exhaust system, guiding system, and ejection system.
1. The pouring system refers to the flow channel part before the plastic enters the mold cavity from the nozzle, including the main channel, cold material cavity, diversion channel, and sprue.
The design of the pouring system affects the flow and filling of plastic in the mold, which directly affects the quality of the molded product.
2. The molded parts system is a combination of various parts that make up the shape of the product, including moving molds, fixed molds, cavities, and cores.
The core forms the inner surface of the product, while the cavity forms the outer surface shape of the product. The precise fit and processing quality of these parts directly determine the dimensional accuracy and surface smoothness of the product.
3. The temperature control system is designed to meet the requirements of injection molding process for mold temperature.
By adjusting the temperature of the mold, the flowability and solidification speed of the plastic can be controlled, thereby affecting the performance and appearance quality of the product.
The function of the exhaust system is to eliminate the air and gas inside the cavity during the injection molding process,
To prevent defects such as pores, air marks, or burning in the product. The exhaust system is usually achieved by setting up air outlets or exhaust holes to ensure the smooth discharge of air during plastic filling.
5. The guidance system is used to ensure accurate alignment between the moving and fixed molds during mold closing.
By setting up guiding components, the accurate positioning of the mold can be ensured, avoiding errors during the molding process.
6. The ejector system includes a ejector pin
Top needle plate, top needle guide rod and other components are used to smoothly push the molded plastic products out of the mold. The design and operation of the ejection system affect the demolding effect and production efficiency of the product. The various systems of injection molds and plastic molds work together to complete the molding process of plastic products. For the design and manufacturing of plastic molds, every system is crucial, and improper design or operation at any stage can lead to a decrease in product quality or production efficiency. Therefore, in the design and manufacturing process of plastic molds, it is necessary to comprehensively consider the relationships between various systems to ensure that they can work effectively together and achieve the best production results.