Glue-leakage-proof upper and lower die heads with built-in adjustable PP (polypropylene) and PET (polyethylene terephthalate) runners

The utility model relates to the technical field of upper and lower die heads, in particular to a glue leakage prevention upper and lower die head with built-in adjustable PP (polypropylene) and PET (polyethylene terephthalate) runners, which comprises a die structure, the die structure comprises an upper die, the bottom end of the upper die is connected with a lower die, the front end of the upper die is connected with a mouth die, the upper end of the mouth die is connected with a fixing bolt, and the lower end of the mouth die is connected with an upper die. The top end of the upper die is connected with an adjusting structure, the adjusting structure comprises a flow adjusting screw, the top end of the upper die is connected with the flow adjusting screw, a screw hole is formed in the upper die, the tail end of the flow adjusting screw is connected with a screw rod, and the side face of the lower die is connected with a limiting structure. According to the utility model, the flow adjusting screw, the scre