4)Threaded Ring Cavity Threaded ring cavity is a kind of active insert used to mold the outer thread of the plastic parts, which shall be protruded together with the parts after molding and dismounted outside the mold. Fig 2-5 shows an integral threaded ring cavity whose length of fit is 5mm-8mm. To make it easy for assembly, the remaining parts are made into 3.5obliquity, and a four-sided plane is modified at the lower extreme so that it will be convenient to screw it from the plastic parts with To sum up, cavity structures in more common application are integral embedded cavity and insertion and splice cavity 8/8 2. Core Structural Desi Integral punch costs too many materials and the working load for cutting and processing amounts too high. Therefore, hardly any such structure exists in modern mold structures which is instead preoccupied with integral embedded punch and inlaying modular punch, as indicated in Fig 2-6 and 2-7 多4) Threaded Ring Cavity Threaded ring cavity is a kind of active insert used to mold the outer thread of the plastic parts, which shall be protruded together with the parts after molding and dismounted outside the mold. Fig.2-5 shows an integral threaded ring cavity whose length of fit is 5mm~8mm. To make it easy for assembly, the remaining parts are made into 3°~ 5° obliquity, and a four-sided plane is modified at the lower extreme so that it will be convenient to screw it from the plastic parts with tools. To sum up, cavity structures in more common application are integral embedded cavity and insertion and splice cavity. Fig.2-5: threaded ring cavity 2. Core Structural Design Integral punch costs too many materials and the working load for cutting and processing amounts too high. Therefore, hardly any such structure exists in modern mold structures which is instead preoccupied with integral embedded punch and inlaying modular punch, as indicated in Fig.2-6 and 2-7. Fig.2-6: core structure