Mouth die structure of die head for blow molding equipment

A die structure of a head die for a blow molding machine includes a die, a die body, a gland for an axially fixed die, a fastener for fastening a gland, and an adjustment between a die and an associated die The clearance is the adjusting part of the die mouth size, and the die is a flexible annular die whose ring can be used for macro deformation. Below the die there is an additional offsetable die that can be offset circumferentially. Novel design, simple structure, flexible adjustment, and large adjustment range, especially for uneven discharge at individual points outside the adjustment range of the adjustment part of the die mouth, can be inserted into the radial hole to control the additional bias The shifting die is offset circumferentially to the adjustment range of the adjustment member, and an effective and moderate adjustment is performed. The film blown by using the die structure of the present invention has the advantages that the film bubble tube is uniform in thickness, that is, the thickness of the finished film is small, and the physical and mechanical properties are good. The die structure of the utility model has strong versatility and is suitable for various die heads for extrusion blow molding equipment.