Classification of injection mold design

The injection mold is composed of a number of steel plates with various parts. It is basically divided into: forming device, positioning device, fixing device, cooling system, constant temperature system, runner system, ejection system. Plastic mold design is divided into three categories (1) Large nozzle injection mold design: runners and gates are on the parting line, and are demolded together with the product when the mold is opened. The design is the simplest, easy to process, and low cost. Many people use large nozzle system for operation. (2) Design of injection mold for fine nozzle: runners and gates are not on the parting line, but are usually directly on the product. Therefore, it is necessary to design an additional set of nozzle parting lines. The design is more complicated and the processing is more difficult. Generally, it depends on the product requirements. Instead, use a fine nozzle system. (3) Hot runner injection mold design: The structure of this type of mold is roughly the same as the nozzle. The biggest difference is that the runner is in one or more hot runner plates and hot nozzles with constant temperature. There is no cold material demoulding, and the runner And the gate is directly on the product, so the runner does not need to be demolded. This system is also called a nozzleless system, which can save raw materials. It is suitable for situations where the raw materials are more expensive and the product requirements are high. The design and processing are difficult, and the mold cost is relatively high.