The sprue bush is the connecting member between the machine nozzle and the mold face ，or can also be described as a flow path component that allows molten plastic material to be injected from the nozzle of the injection molding machine into the interior of the mold,and provides suitable aperture through which the material can travel on its way to the mould cavity or the start of the runner system in multi-impression molds.The bolt-type nozzle is a nozzle that is fixed by two bolts and is fixed by bolts to prevent the nozzle from falling off due to the injection pressure. The sprue bushing is often used as the grab point in robotic removal of parts, sprues and runners. This requires that the sprue be rigid enough to resist the pressure of the robot fingers as well as the extraction forces. With conventional steel sprues this measure is most often met by added cooling time to the mold cycle. HG Precision will again reduce the sprue coo...