The utility model relates to the technical field of labeling machines, and discloses an automatic labeling
machine which comprises a mounting seat and a labeling device, two groups of side plates are fixedly mounted at the upper end of the mounting seat, a conveying
assembly is arranged between the two groups of side plates, and limiting fixing devices are fixedly mounted on the two groups of side plates. The limiting and fixing device comprises four sets of mounting frames and U-shaped frames which are fixedly mounted on the sides, away from each other, of the two sets of side plates, the conveying
assembly cooperates with a limiting rod of the limiting and fixing device to preliminarily limit products in conveying, and a driving motor drives a driving
bevel gear to rotate and drives a two-way screw to rotate through meshing transmission with a driven
bevel gear; the threaded sliding blocks at the two ends of the two-way screw move oppositely or reversely along with the two-way screw, the clamping plates are driven to be opened and closed through the L-shaped rods, products with different widths are clamped, after the products are labeled, the conveying
assembly is automatically started, the labeled products are sent out, the next to-be-labeled product is conveyed to the position below the labeling device, the whole process is automatically operated, and the production efficiency is improved. And the production efficiency is greatly improved.