The components of the mold, what are the names and functions of each part?

Composition of the mold The injection mold consists of a moving mold and a fixed mold. The moving die is installed on the moving die plate of the injection molding machine, and the fixed die is installed on the fixed die plate of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a gating system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated, and the plastic product is taken out. According to the function of each part in the mold, the injection mold can generally be subdivided into the following basic parts. 1. Molded parts Molded parts consist of cores and dies. The core forms the inner surface of the product, and the female die forms the outer surface shape of the product. After the mold is closed, the core and the cavity form the cavity of the mold. According to the requirements of technology and manufacturing, sometimes the core and die are composed of several pieces, sometimes they are made into a whole, and the inserts are only used in parts that are easy to be damaged and difficult to process. 2. Gating system, also known as runner system, is a set of feeding channels that guide the plastic melt from the nozzle of the injection machine to the cavity. It usually consists of main runner, branch runner, gate and cold cavity. It is directly related to the molding quality and production efficiency of plastic products. Iii. Guiding parts In order to ensure that the moving die and the fixed die can be accurately centered during mold clamping, guiding parts must be set in the mold. In the injection mold, four groups of guide posts and guide sleeves are usually used to guide, and sometimes it is necessary to set mutually consistent inner and outer conical surfaces on the moving mold and the fixed mold to assist in positioning. 4. Ejection mechanism In the process of mold opening, it is necessary to have an ejection mechanism to eject or pull out the plastic products and their solidified materials in the runner. Push out the fixed plate and the push plate, and clamp the push rod. Usually, the reset lever is also fixed in the push rod. When the movable die and the fixed die are closed, the reset lever resets the push plate. V. Temperature Control System In order to meet the requirements of injection molding process for mold temperature, a temperature control system is needed to adjust the mold temperature. For the injection mold of thermoplastic, the cooling system is mainly used to cool the mold. The common method of cooling the mold is to open a cooling water channel in the mold, and take away the heat of the mold with circulating cooling water; In addition to using hot water or steam in the cooling water channel, electric heating elements can be installed inside and around the mold to heat the mold. 6. Exhaust groove The exhaust groove is used to completely exhaust the gas in the mold cavity during the molding process. The common method is to open an exhaust slot on the parting surface. Seven. Side core-pulling mechanism Some plastic products with side concave or side hole must be separated laterally before being pushed out, and the side core can be successfully demoulded after being pulled out. At this time, it is necessary to set a side core-pulling mechanism in the mold. Eight, standard mold base In order to reduce the heavy workload of mold design and manufacture, most injection molds use standard mold bases.