Stud tension decomposition structure capable of reducing appearance and functional defects of product

The utility model discloses a stud tension decomposition structure capable of reducing appearance and functional defects of a product, which comprises a rear mold core, a pitched roof, an insert pin and a pressing block, and the rear mold core is provided with a first guide groove and a second guide groove; after the mold is closed, the pitched roof and the rear mold core form a cavity of the screw column; the pitched roof is arranged in the first guide groove in a sliding manner; the insert pin is arranged in the second guide groove in a sliding mode, the end of the insert pin extends into the cavity, the pressing block is arranged in the rear mold core, and the downward moving distance of the insert pin is limited through the pressing block. The structure is simple, the use is convenient, and the floating insert pin is arranged to replace an ejector sleeve, so that mutual interference with the pitched roof is avoided; through force decomposition, the screw column is prevented from being subjected to holding