An underwear mold cup lifting mechanism belongs to the technical field of underwear production and comprises a base portion, a driving portion and an actuating portion, the driving portion is mounted on the base portion, and the actuating portion is mounted on the driving portion. The base part comprises a lower
conveyor belt, an upper
conveyor belt, a sliding sleeve and a support, the sliding sleeve is arranged at the intersection of the lower
conveyor belt and the upper conveyor belt, a sliding cover of the driving part is sleeved with the sliding sleeve, the support is further arranged above the rear side of the base part, and a rod piece of the driving part is hinged to the support. The driving part comprises a sliding cover, a connecting rod, a
crank, a follow-up rod, a duplex rod and a parallel rod, the sliding cover is installed in the sliding sleeve in a sleeved mode, and two inner double lugs are arranged in the sliding cover up and down. The upper inner double lugs are hinged to a follow-up rod, the top of the follow-up rod is hinged to a duplex rod, the middle of the duplex rod is hinged to a
hinge point below the support, the upper end of the duplex rod is hinged to a vertical rod of the actuating part, and a parallel rod is arranged above the duplex rod. The actuating part comprises a vertical rod,
diagonal draw bars and a lifting platform, and the bottom of the vertical rod is connected with the lifting platform through the three
diagonal draw bars.