The present invention belongs to the technical field of plastic processing, in particular to a stable injection blow molding machine and a working method thereof. The present invention provides a stable injection blow molding machine, comprising: an injection blow molding machine, at least one lower bottom mold arranged thereon; an extruder slidably arranged on one side of the injection blow molding machine, with an injection head at the end; a plurality of adjusting and protecting mechanisms slidably arranged on the outer wall of the injection head and adapted to seal the injection head; wherein the extruder moves toward the lower bottom mold until the adjusting and protecting mechanisms abut against the lower bottom mold, the injection head continues to move horizontally, and the adjusting and protecting mechanisms are adapted to evert relative to the injection head; during the overturning process, the adjusting and protecting mechanisms are adapted to suck raw materials inside the injection head under negative pressure to apply them on the outer wall of the injection head; through the arrangement of the adjusting and protecting mechanisms, the injection head can be prevented from being contaminated by impurities, and raw materials inside the injection head can be prevented from overflowing.

Country Code: CN

Application Number: CN202411356932.X