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Plastic Molds Can Be Divided Into Three Categories According To The Different Types Of Casting Systems
May 10, 2018

(1) Dashuikou Mould: The runner and the gate are on the parting line, and it is released together with the product when the mold is opened. The design is the simplest, easy to process, and the cost is low, so more people use the large nozzle system operation.

(2) Fine nozzles: The runners and gates are not on the parting line. Generally, they are directly on the product. Therefore, it is necessary to design more than one outlet line. The design is more complicated and the processing is more difficult. Generally, it is selected according to the product requirements. Fine water outlet system.

(3) Hot Runner Mould: This type of die structure is the same as the fine nozzle. The biggest difference is that the runner is in one or more thermostatic hot runner plates and hot nipples. No cold material is used to release the mold, runners and pouring. The mouth is directly on the product, so the runner does not need to be demoulded. This system is also called a waterless system, which can save raw materials. It is applicable to the situation where the raw materials are relatively expensive and the products require high quality. The design and processing are difficult and the mold cost is high.

Hot runner system, also known as hot runner system, is mainly composed of hot sprue bushing, hot runner plate and temperature control electric box. Our common hot runner system has two forms of single hot runner and multiple hot runners. The single-point hot sprue is the use of a single hot sprue bushing to directly inject the molten plastic into the cavity. It is applicable to a single cavity single gate plastic mold; the multi-point hot sprue is used to branch the molten material to each through a hot runner plate. The sub-heating sprue bushing is re-entered into the cavity, which is suitable for single cavity multi-point feeding or multi-cavity molds.