Hot runner injection mold design steps

1) According to the structure and application technical standards of plastic injection parts, make clear where the inlet is. As long as the design of the plastic injection part allows, the hot nozzle and nozzle head in the fixed mold insert do not interfere with the plastic injection part, the hot runner system can be placed on any part of the plastic injection part.

General plastic injection parts of the plastic inlet position must be based on sufficient stamping die work experience to achieve selection. In view of the large and medium sized and complicated plastic injection parts, the position of the injection nozzle was simulated by CAE to carry out the fluidity of the molten plastic in the concave die, and the actual effect of the cooling effect of each component of the plastic mold was analyzed to determine the more satisfactory position of the injection nozzle.

2) Clarify the nozzle form of hot runner system. The application characteristics of plastic injection parts are the main factors to choose the type of nozzle. The production of plastic parts and the manufacturing cost of die casting molds are also key factors in the selection of nozzle types.

3) According to the production and manufacturing batch number of plastic injection parts and the tonnage of injection machine and equipment, the number of concave mold of plastic shell is determined.

4) The number of nozzles is determined by the specific location of the glue inlet and the total number of concave dies per mold.

5) According to the total weight of plastic injection parts and the total number of hot nozzles to determine the radial size of the hot nozzle.

6) Determine the mold design and specifications according to the structure of plastic products, then select the standard length series size of hot nozzle according to the thickness size of fixed fixed module and fixed fixed template, and finally cut and repair the thickness size of the template and other dimensions related to the thermoelectric flow system.

7) Determine the shape of the hot runner fixed plate according to the shape of the hot runner separation plate, equip the plate with a power plug slot, and design sufficient cooling circulating water control loop around the hot runner separation plate, hot nozzle and nozzle head.