Automatic film tearing mechanism

The utility model relates to the technical field of clamping devices for film tearing, in particular to an automatic film tearing mechanism which comprises a fixing plate, a mounting block, a connecting block and a clamping plate, the mounting block is fixedly mounted on the front side surface of the fixing plate, a sliding device is arranged on the right side of the fixing plate, and the connecting block is arranged on the right side of the fixing plate through the sliding device. And a limiting device is arranged on the right side of the mounting block. The air cylinder pushes the connecting block to move downwards, under the limiting effect of the connecting shaft, the lower end of the clamping plate can be driven to be close to the surface of the fixing plate, and meanwhile when the clamping plate moves, a certain limiting effect is formed on the clamping plate under the matching effect of the limiting pulley and the arc-shaped sliding groove; due to the fact that the POM layer adheres to the surface of t