Cylinder replacing and supplementing mechanism for feeding cylinder of drawing frame and drawing frame

The utility model relates to a cylinder replacing and supplementing mechanism for a feeding cylinder of a drawing frame and the drawing frame, and the cylinder replacing and supplementing mechanism comprises a cylinder taking mechanism, the barrel taking mechanism comprises a mounting base mounted on one side of the conveying line mechanism, a driving assembly connected to the mounting base, an indexing structure mounted on the driving assembly and a mechanical arm connected to an output shaft of the driving assembly. The buffer assembly is installed on the mechanical arm, the clamping jaw assembly is connected to the tail end of the mechanical arm, the mechanical arm is suitable for being driven by the driving assembly to do circular motion, the mechanical arm is suitable for driving the clamping jaw assembly to move, and the clamping jaw assembly is suitable for being connected with a gas conveying pipe. And the clamping jaw assembly is pneumatically driven to clamp the barrel to move to the corresponding l