Forward and backward pushing air cylinder structure of profiling block

The utility model provides a forward and backward pushing air cylinder structure of a profiling block, and relates to the technical field of profiling block machining and conveying tools. A bottom plate is fixedly connected to the top of the base, a cylinder is mounted on one side of the bottom plate, and the bottom of the cylinder contacts with the top of the base. An L-shaped movable frame is connected to the top of the air cylinder, an L-shaped supporting piece is fixedly connected to the top of the L-shaped movable frame, and a U-shaped top frame is installed on the top of the L-shaped supporting piece. The top of the L-shaped supporting piece is connected with two springs, and the interior of the U-shaped top frame is connected with a bolt. When the profiling block falls to the position above the U-shaped top frame, the spring is affected by downward movement of the U-shaped top frame to contract, the effect of buffering and protecting the profiling block is achieved, the situation that the profiling blo