Aluminum plastic film forming online defect detection device

The utility model relates to an aluminum plastic film forming online defect detection device which comprises an equipment shell, a fixing plate is arranged in the equipment shell, an upper mounting plate is fixed on the upper side of the fixing plate through an upper supporting rod, a lower mounting plate is fixed on the lower side of the fixing plate through a lower supporting rod, an upper air cylinder is arranged on the upper mounting plate, and a lower air cylinder is arranged on the lower mounting plate. The output end of the upper cylinder is fixedly connected with the upper sealing cover, the output end of the lower cylinder is fixedly connected with the lower sealing cover, an opening is formed in the middle of the fixing plate and enables the upper sealing cover and the lower sealing cover to be oppositely arranged, and a space between the fixing plate and the upper sealing cover is used for allowing a to-be-detected aluminum plastic film to pass through. The upper sealing cover and the lower sealing