Why has China’s automatic blow molding machine not reached the level of commercialization? The author believes that there are mainly four reasons.
First, there are misunderstandings in development ideas
The development of automatic blow molding machines, enterprises only focus on host development, ignoring mold development. The automatic blow molding machine is a combination of the main machine and the mold. From the importance of the main machine and the mold to the whole machine, the main machine only accounts for 40% of the whole machine, and the mold accounts for 60% of the whole machine. The successful development of the host computer is not the successful development of the whole machine. Only when the host and the mold are jointly developed, can the automatic blow molding machine be successfully developed. The ydsky1207 technology hub of Japan’s “three-station” and Japanese-style “four-station” models is a mold, and some of our plastic machinery factories are not accurately familiar with the host and mold during the development of the automatic blow molding machine. The relationship is only to face the development of the host, but does not put the development of the mold in a more important position, the main reason for failure is here.
Second, the technical level of the mold does not meet the requirements
The mold of the automatic blow molding machine is different from the injection molding mold and has its own characteristics. In the mold of the automatic blowing machine, the hub is a mold for the injection of the parison. The material of the mold has special requirements for its function, the heat expansion and contraction coefficient is small, the heat transfer efficiency is high, the thermal conductivity is high, and the structure of the mold is in the form of a hot runner. From the current level of mold technology in China, it is not possible to develop molds for automatic blow molding machines that meet quality standards. It is understood that some of the materials used by the mold factory for the mold of the automatic blowing machine are not clear, how can the mold be developed?
Third, the mold factory lacks input
The lack of investment in the mold factory has made the mold technology level undeveloped. It is understood that the mold factory that develops and manufactures automatic blow molding machines abroad has its own automatic blow molding machine. The developed molds must be tested repeatedly on the main machine until the requirements are met. However, there is no mold factory in the country to purchase automatic blow molding machines as prototype equipment for the development of molds for automatic blow molding machines.
Fourth, the host factory and the mold factory lack cooperation
The main engine factory and the mold factory must cooperate, and each of them has a division of labor and joint development, each taking risks. This is the experience of developing automatic blow molding machines abroad. For example, Japan’s Aoki Solid Co., Ltd. and Japanese companies have a mold factory for them. The OEM has requested the mold factory to develop it and then hand it over to users. And some of our OEMs are still not familiar with the molds of the “one-step” automatic blow molding machine. In order to save the cost of the development, we manufacture the mold ourselves. As a result, not only the products can not reach the quality scale, but also the image of the host. Has had a bad effect.