Online detection equipment for identifying mold cavity number in bottle preform

The invention belongs to the technical field of online detection equipment, and particularly relates to online detection equipment for identifying a mold cavity number in a bottle preform. The onlinedetection equipment comprises a mold cavity number character positioning and rotating module, a mold cavity number character recognition module, a main camera, a main optical lens, an annular light source, a main reflecting prism, an auxiliary reflecting prism, a clamping mechanism, an auxiliary camera, an auxiliary optical lens, an area light source, a conveying movement mechanism and control equipment. The online detection equipment for identifying the mold cavity number in the bottle preform quickly identifies the mold cavity number characters in a bottle blank. On one hand, the problem that the traditional machine vision cannot directly detect and identify the mold cavity number due to random positions of characters on the surface of the cylindrical bottle blank is solved, and on the other hand, the problem of