This utility model invention discloses an installation method for the injection valve plate of an injection blow molding machine, including an injection seat, an injection box, an injection cylinder, a barrel, a driving device, and a screw. The injection valve plate is fixedly installed on the injection cylinder and covers the cylinder oil holes. The injection valve plate has two first oil supply holes corresponding to the two cylinder oil holes. The first oil supply holes and the cylinder oil holes are sealed and connected through a sealing device. The injection valve plate also has a main oil inlet hole and a main oil return hole, which are respectively connected to different first oil supply holes. The main oil inlet hole and the main oil return hole are connected to the oil supply connector and the oil return connector of the oil pump through flexible high-pressure oil pipes. By installing the injection valve plate on the injection cylinder, the high-pressure oil pipes that originally connected the injection cylinder and the injection valve plate can be eliminated, saving materials and simplifying the structure.

Country Code: CN

Application Number: CN201720004770.2