Injection mould die set processing

Gate set processing common gate set has two types, as shown in figure 2. 13 the type A and type B. Generally USES the carbon tool steel T8A manufacturing, local heat treatment, hardness HRC57. Compared with the general set of parts, gate set small taper hole ( The small end diameter is commonly 3 ~ 8 mm) , processing is more difficult, but also should guarantee the runner cone hole and cylindrical coaxial, in order to mould installation by locating ring gate and injection machine nozzle alignment. Side slide block core processing when injection molding plastic products with side concave or side hole, must mould with side parting or side core-pulling mechanism, as shown in figure 2. 10 ( c) 、( b) Shown below. On the side core slider with a lateral core or molding set pieces. Side core slider and chute can adopt different structure combination, as shown in figure 2. 15. Table 2 - Processing gate 10 sets of process structure analysis: the side slide block core is an important part of side core-pulling mechanism, injection molding and core pulling reliability of motion accuracy need it. Slider and cooperate with the characteristics of the chute often choose H8 / g7 or H8 / h8/21 dated, the rest should have larger gap, which cooperate with the surface roughness Ra < 0. 63-1. 25μm。 Slider material 45 steel or carbon tool steel, is often used to guide slide part can be partial or all hardened, hardness HRC40 ~ 45. Figure 2. 16 for the side slide block core, its craft route - are shown in table 2 11.