This patented technology is used to open and close the mold, especially in the automatic equipment or automatic production line. When the mold moves with the production line, it opens and closes the mold at each station. There is no fixed connection between the mold opening and closing mechanism and the mold. The mold can be moved and the mold opening and closing mechanism is fixed. It can meet the requirements of opening and closing the mold (especially multiple molds of one machine) moving between different stations in the automation equipment.