The clamping mechanism structurally comprises a clamping table, a control panel, a supporting column, a top plate and a
cutting pressing device, the control panel is arranged on the surface of the front end of the clamping table and electrically connected with the clamping table, and the lower end of the supporting column is fixedly installed on the upper end face of the clamping table; in the process that the
cutting pressing device descends to
cut the circular
pipe, the driving motor drives the driving shaft rod to rotate, the two driving wheels are driven to synchronously rotate at the two ends of the circular
pipe through conveying of the conveying belt, the circular
pipe placed at the upper end of the middle of the table top is rotationally guided, and the rotating circular pipe is
cut through the
cutting pressing device; it is ensured that when the pipe
diameter of the circular pipe is large, the cutting pressing device can
cut off the circular pipe at a time, and the uniformity of a cutting opening of the circular pipe is improved; and through elastic
extrusion cooperation of the elastic telescopic pipe and the
extrusion rod, when the
cutting tool descends to cut the circular pipe, the limiting pressing plate keeps still to abut against the circular pipe, and the stability of the circular pipe in the cutting process is improved.