A plastic hollow container extrusion blow molding machine comprises a plasticizing system, a die head extrusion system, and a blow molding system mounted on a frame. The blow molding system includes a blowing mechanism and a mold opening and closing mechanism. The mold opening and closing mechanism comprises a front mold plate and a rear mold plate connected by tie rods, with a mold installed between the front mold plate and a middle mold plate. The mold includes two mold cavities, and a mold opening and closing synchronization mechanism is installed between the middle mold plate and the rear mold plate. Material-supporting rod grooves are formed on the inner walls of the two cavities. A base is fixed directly below the mold, connected to a fixed plate via a vertical adjustment device. The fixed plate is equipped with a lifting oil cylinder connected to a transverse plate, which fixes horizontal guide pillars through left and right vertical plates. The left and right vertical plates are fitted with a first expansion oil cylinder and a second expansion oil cylinder, whose piston rods move in opposite directions and are fixed to material-supporting blocks. Material-supporting rods are mounted on the material-supporting blocks and match the material-supporting rod grooves. The material-supporting blocks are sleeved on the horizontal guide pillars, and a blow pin fixing block is installed between the horizontal guide pillars, with a blow pin mounted thereon matching the air hole at the bottom of the mold.
Country Code: CN
Application Number: CN200820162064.1
