What Are The Classifications Of Plastic Molds?

Classification
A. Injection molding mold - TV casing, keyboard buttons, electronic product exteriors, computer peripheral plastic products, toys, household products (most commonly used)
B． Blowing mold-beverage bottle
C． Compression molding mold - Bakelite switches, scientific porcelain dishes
D. Transfer molding mold - integrated circuit products
E. Extrusion mold - glue tube, plastic bag
F． Thermoforming Mold - Transparent Forming Packaging Shell
G. Rotational mold - soft plastic doll toys
According to the different types of pouring systems, molds can be divided into three categories:
(1) Large nozzle mold: The runners and gates are on the parting line and are demoulded together with the product when opening the mold. It has the simplest design, is easy to process, and has low cost. Therefore, more people use the large nozzle system to operate.
(2) Slim nozzle mold: The runner and gate are not on the parting line, usually directly on the product, so it is necessary to design an additional set of nozzle parting lines. The design is more complex and the processing is difficult. Generally, the selection depends on the product requirements. Fine nozzle system.
(3) Hot runner mold: The structure of this type of mold is roughly the same as that of the fine nozzle. The biggest difference is that the runner is located in one or more hot runner plates and hot spouts with constant temperature. There is no cold material demoulding, runner and pouring. The port is directly on the product, so the runner does not need to be demoulded. This system is also called a no-port system, which can save raw materials. It is suitable for situations where raw materials are expensive, product requirements are high, design and processing are difficult, and mold costs are high.
Hot runner system, also known as hot runner system, mainly consists of hot runner sleeve, hot runner plate, and temperature control electrical box. Our common hot runner systems have two forms: single-point hot gate and multi-point hot gate. Single-point hot gate uses a single hot sprue sleeve to directly inject molten plastic into the mold cavity. It is suitable for plastic molds with a single cavity and a single gate; multi-point hot gate branches the molten material to various locations through a hot runner plate. The heat is divided into the sprue sleeve and then enters the mold cavity. It is suitable for single-cavity multi-point feeding or multi-cavity molds.