According to different casting systems, what types of injection molds can be divided into?

　　1. Large nozzle mould:

　　Large nozzle mold means that the gate and runner are on the parting line, and they are demolded together with the product when the mold is opened. It has the simplest design, easy processing and low cost, so many people use large nozzle molds. The injection mold structure is divided into two parts: the movable mold and the fixed mold. The movable part along with the injection molding machine is the movable mold (mainly on the ejection side). Generally, the injection end of the injection molding machine is inactive, so it is called a fixed mold. Since the fixed mold part of the large nozzle mold is generally composed of two steel plates, this structural mold is also called a "double plate mold". The simplest structure of the large nozzle mold is the two-plate mold.

　　2. Nozzle mold:

　　Runners and gates are not on the parting line, usually directly on the product. Therefore, it is necessary to design one more nozzle parting line, the design is more complicated, and the processing is more difficult. Generally, the fine nozzle system should be selected according to the requirements of injection mold products. The fixed part of the nozzle mold is generally composed of three steel plates, so this structure mold is also called "three-plate mold". The three-plate mold is the simplest structure among the nozzle molds.

　　3. Hot runner mold:

　　The structure of this kind of Automotive mold is roughly the same as the nozzle. The biggest difference is that the runner is in one or more constant temperature hot runner plates and hot nozzles. There is no cold material demoulding, and the runner and gate are directly on the product. Therefore, the runner does not need to be demolded. This system is also called a nozzles system, which can save raw materials. It is suitable for occasions where raw materials are expensive, product requirements are high, design and processing are difficult, and mold costs are high. The hot runner system is mainly composed of a hot runner sleeve, a hot runner plate, and a temperature control electric box.

　　Our common hot runner system has two forms: single-point hot gate and multi-point hot gate. The single-point hot gate uses a single-hot sprue sleeve to directly inject molten plastic into the cavity, which is suitable for single-cavity single-gate injection molds; the multi-point hot gate divides the molten material into each sub-heat pouring through the hot runner plate Muzzle and then enter the cavity. Suitable for single-cavity multi-point feeding or multi-cavity molds.

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