Hot semi molds,also known as hot runner systems,are a part of plastic injection molds that provide insulation and heat to the plastic during the injection molding process,ensuring that plastic materials can flow and fill the mold.The structure and components of the hot half mold mainly include the following aspects:

　　1.Hot runner plate:The hot runner plate is the main supporting structure of the hot half mold,usually made of materials with high thermal conductivity,such as copper or aluminum alloy.It usually has a complex channel structure for conducting and distributing heat to various heat channels.

　　2.Hot Runner Joint:A hot runner joint is a component that connects the injection molding machine nozzle and the mold.It guides the heated plastic material into the mold cavity through a hot runner plate.Hot runner joints are usually made of high-temperature resistant alloy materials,which have good thermal conductivity and corrosion resistance.

　　3.Hot runner throat:The hot runner throat is the connecting port between the hot runner joint and the mold cavity,which controls the flow and injection rate of plastic materials.Common types of hot runner throat include needle valve throat,bottle throat,annular throat,etc.Choosing a suitable throat type can optimize the injection molding process and product quality.

　　Hot half mold

　　4.Temperature Control System:The temperature control system is a very important component in the hot half mold,which is used to regulate the temperature of the hot runner and ensure that the plastic material maintains a suitable flow state during the injection molding process.The temperature control system is usually composed of a temperature controller,a hot runner temperature controller,an electric heating tube,and other equipment,which meets the needs of different injection molding processes through accurate temperature control.

　　5.Temperature Sensor:The hot runner temperature sensor is used to monitor the temperature of the hot runner in real time and feed back the data to the temperature control system for adjustment.Temperature sensors are usually located near the hot runner plate or hot runner joint,which can accurately measure temperature and ensure temperature stability during the injection molding process.

　　In addition to the main structures and components mentioned above,the hot half mold may also include other auxiliary components,such as cooling channels,hot runner cleaning systems,etc.These components are used to improve the efficiency of the hot runner and maintain the normal operation of the hot half mold.

　　In short,hot semi molds are a crucial part of plastic injection molds,which ensure the flow and filling of plastic in the mold by heating and controlling the temperature of plastic materials,thereby producing high-quality plastic products.The design and selection of the structure and components of a hot semi mold have a significant impact on the stability of the injection molding process and product quality.