The hollow blow molding machine is a combination of the host and the mold, from the importance of the host and the mold for the whole machine, the host only accounts for 40% of the whole machine, and the mold accounts for 60% of the whole machine. The successful development of the host is not equal to the successful development of the whole machine, only the joint development of the host and the mold can be said to be successful in developing the injection and blow hollow plastic molding machine. The technical key of Japan's "three-station" and Japan's "four-station" models is the mold, and some of our plastic machinery factories in the development of hollow blow molding machine process, did not correctly understand the relationship between the host and the mold, only pay attention to the development of the host, and did not put the development of the mold in a more important position, the main reason for the failure is here. Suzhou blow molding processing
Mold technical level can not meet the requirements
The mold of the hollow blow molding machine is different from the injection molding mold and has its own characteristics. In the mold of injection drawing and blowing hollow plastic, the key is the mold of injection billet, the material of the mold has special requirements for its performance, the coefficient of thermal expansion and cooling contraction is small, the heat transfer efficiency is high, the heat conductivity is high, and the structure of the mold is in the form of hot runner. From the current level of mold technology in China, it is not possible to develop and manufacture molds that meet quality standards of injection, drawing and blowing hollow plastic machines. It is understood that some mold factories do not know what kind of material is used in the mold of the injection, drawing and blowing hollow plastic molding machine, how can they develop a mold?
Mold is the focus of the development of "one-step" hollow blow molding machine. The key point of developing "one step" hollow blow molding machine mold is to develop the mold of injection type billet. The research and development of injection mold is focused on the material of the mold, the design of hot runner nozzle and hot runner, and the temperature control system. At present, in the case that the mold of China's "one-step" hollow blow molding machine cannot reach the technical level, the Oems can cooperate with relevant foreign mold factories. As long as the mold reaches the due technical level, with our host, it can be said that the "one-step method" injection and blow hollow molding machine can go to the market.
