Optical glass bar drawing device

The invention discloses an optical glass bar drawing device. Belongs to the technical field of optical glass secondary forming. The problems that an end material of a secondary forming base material of an optical glass bar cannot be effectively softened, and the shape and shape tolerance of the base material greatly influence the shape and shape tolerance of the secondary forming bar are mainly solved. The device is mainly characterized by comprising a feeding device, a heating device and a shaping device, the feeding device clamps base metal through a telescopic roller, the base metal is pushed into the heating device through a push rod, a protective shell, used for preventing the base metal from toppling, at the end of the base metal does not enter the heating device, and the whole base metal is heated evenly and is good in softening consistency. The heating device comprises a softening furnace and an auxiliary guide sleeve with a built-in heating element; the shaping device corrects the shape and the shape