Paperboard bonding device with self-adaptive adjusting function

The utility model relates to a paperboard bonding device with a self-adaptive adjustment function, which aims to solve the technical problem that the time is wasted due to back-and-forth adjustment caused by the fact that the distance between a clamping mechanism for clamping cartons with different sizes passes through needs to be manually adjusted, and comprises a sealing machine body and a clamping structure, the two clamping structures are symmetrically arranged on the portions, on the two sides of the sealing machine body conveying structure, of the rack. The clamping structure comprises a fixing plate and a limiting plate; the fixed plate is fixedly arranged on a rack of the sealing machine body; the limiting plate is arranged on the inner side of the fixing plate through a plurality of elastic connecting assemblies. The elastic connecting assembly comprises a telescopic rod body and a spring; the telescopic rod body is arranged between the fixing plate and the limiting plate; the telescopic rod has the