Guangzhou Mold Factory Introduction of Three Types of Plastic Molds for Casting System

Guangzhou mold factory is divided into three categories according to the type of pouring system:

(1) Large nozzle nozzle:
The runner and gate are on the parting line and demoulded together with the product when the mold is opened. The simplest design, easy processing and low cost, so more people use the large nozzle system to operate. Plastic mold structure is divided into two parts: moving mold and fixed mold. As the moving part of the injection machine is a moving mold (mostly on the ejection side), the inactivity at the injection end of the injection machine is generally called a fixed mold. Because the fixed mold part of the large nozzle is generally composed of two steel plates, this type of structural mold is also called a "two-plate mold". The two-plate mold is the simplest structure in a large nozzle.

 (2) Spout mold:

 runner and gate are not on the parting line, and are usually directly on the product. Therefore, an additional set of spout parting lines should be designed. The design is more complicated and the processing is more difficult. Generally, it should be selected according to product requirements. Fine nozzle system. The fixed mold part of the orifice nozzle is generally composed of three steel plates, so this type of structural mold is also called a "three-plate mold". The three-plate mold is the simplest structure in the nozzle nozzle.

(3) Hot runner mold:

Seaco mold structure is roughly the same as that of the sprue. The biggest difference is that the runner is located in one or more hot runner plates and hot nozzles with constant temperature. There is no cold material demoulding, runners and gates. It is directly on the product, so the flow channel does not need to be demoulded. This system is also called the nozzleless system, which can save raw materials. It is suitable for the situation where the raw materials are more expensive and the product requirements are higher. Hot runner system, also known as hot runner system, is mainly composed of hot runner sleeve, hot runner plate, and temperature control electric box. Our common hot runner system has two forms of single-point hot gate and multi-point hot gate. Single-point hot gate is to use a single hot-gate sleeve to directly inject molten plastic into the cavity. It is suitable for plastic molds with a single cavity and single gate. The heat-receiving gate sleeve then enters the cavity.