There are many types of injection mold mechanisms, but no matter which mold structure, it is mainly composed of the following parts: 1. Molded parts include fixed mold cavity, moving mold cavity and core. In the process of injection molding, this kind of parts directly contact with plastic to form products, which requires high precision and is the core part of injection mold. 1. Fixed mold cavity Fixed mold cavity, also known as female die, mainly forms the external shape of plastic parts. 2. The moving die cavity, also called punch, mainly forms the internal shape of plastic parts. 3. The core core is generally fixed on the moving die, which mainly forms holes and concave-convex plastic parts with special shapes. 2. gating system parts gating system parts mainly include positioning rings, sprue sleeves and other parts. The main function is to fill the molten plastic in the barrel of the injection machine into the mold cavity and transfer the injection pressure. 1. The sprue sleeve is the main part of the injection mold, which is usually embedded in the fixed mold (some molds on the product surface are required to be made into inverted molds). 2. The locating ring is a locating device to determine the mutual position of the nozzle opening and the sprue sleeve of the injection machine when the mold is installed on the injection template. 3. The demoulding mechanism of the injection mold for demoulding system parts consists of all structural parts needed for ejecting plastic parts, such as thimble, thimble pad, thimble fixing plate and other parts. This kind of parts, when used, should be easy to take off the plastic parts, and there is no phenomenon such as deformation, fracture and scratch of the plastic parts. Its mechanism requires flexibility, reliability and convenient replacement and maintenance. 1. ejector pin is a rod used to push plastic parts out of the mold cavity. 2. The ejector pin fixing plate plays the role of fixing the ejector pin, the reset lever of the pipe jacking machine and other parts. 3. The ejector pin pad is used to press the ejector pin, the top pipe and the reset rod, and it is also a part that constitutes the system of ejecting plastic parts from the mold and bears the force of the ejector pin of the injection machine. 4. The reset lever, also known as the thimble-proof lever, is a lever that returns the pushing system to its original position after the ejection of plastic parts is completed. 5. Support and adjust the push-out mechanism with the limit nail to prevent the push-out plate from returning to the lowest position due to foreign matter between the push-out plate and the movable die holder when the push-out plate is reset, which makes it difficult to unload the plastic parts. 4. Cooling and heating mechanism The cooling and heating mechanism mainly includes cold water nozzles, water pipe channels and heating plates. Mainly to adjust the temperature of the mold to ensure the quality of plastic parts. 5. The structural parts of the structural parts mold mainly fix the molded parts to form an integral part. It mainly includes fixed formwork, moving formwork, backing plate, fixed formwork sleeve and moving formwork sleeve, etc. 1. The fixed die fixing plate fixedly connects the fixed die part and the plate installed on the injection machine, and is also the supporting plate embedded in the sprue sleeve. 2. In order to embed in the female die or directly process the plate of the molding cavity, the inner surface of the plastic part is generally molded with the plate. 3. In order to embed the movable mold core or directly process the forming plate, the inner surface of plastic parts is generally formed by plate. 4. Pad a support plate to prevent the punch or other parts from retreating. 5. The supporting plate is used to form a certain activity space to push the plate to complete the pushing action. 6. Guide part The guide part mainly includes guide posts and guide sleeves, which mainly play the role of positioning and guiding the moving die. 1. The guide post is the component that determines the relative position of the fixed template and the movable template. 2. The guide sleeve is matched with the guide post, and the guide sleeve is generally quenched to prevent wear. Seven. Core-pulling mechanism parts Core-pulling mechanism parts are mainly used to process parts with side concave and convex and side holes, mainly including slider cores, inclined guide pillars and other parts. Eight. Fasteners Fasteners mainly include screws, pins and other standard parts, which are used to connect and fasten all parts and make them become the whole of the mold.