A successful hot runner system has to go through many technical checks, every detail can not be ignored, because the hot runner system is different from others, a small mistake may lead to the temperature imbalance of the entire hot runner system, glue leakage and a series of problem factors. Two important factors determine the direction of the entire hot runner system:
How to adjust the key points of the hot runner system in Langfang
Hot runner temperature control: In the hot runner system, the temperature control of plastics is critical, because as long as there is a small error, it will lead to yellowing, wire drawing and other phenomena of the product. If the needle valve gate is used for injection molding, the product gate problem is not perfect, so the needle valve gate method is difficult to close the valve pin when molding, and the problem of part filling time and product quality difference in multi-cavity hot runner mold. If possible, a hot runner system with multi-zone temperature control should be selected as much as possible to increase the use of the hot runner system more flexibly and resiliently.
Control of hot runner runner: plastic in the runner to flow balance, gate to open at the same time is plastic synchronous filling of each cavity, for the weight of the parts to vary greatly to carry out the rubber channel size design balance, otherwise there will be existing parts mold filling pressure is not enough, some parts but mold pressure over-holding and other phenomena, so hot runner gate size design should be reasonable and hot runner runner to be unified, if the size is too small mold filling pressure loss is too large, the size is too large to make the hot runner nozzle filling blockage, in the hot runner system Each design must undergo strict assessment and analysis for multiple tests in order to make the entire hot runner system achieve perfect glue production and good molding quality of the product.
