Novel on-line rapid adjustment forming mechanism

The invention discloses a novel on-line rapid adjustment molding mechanism, and particularly relates to the field of plastic extrusion molding, the novel on-line rapid adjustment molding mechanism comprises a pre-molding adjustment mechanism upper plate, the bottom of the pre-molding adjustment mechanism upper plate is connected with a pre-molding adjustment mechanism lower plate, and a C-shaped retaining ring is mounted on the pre-molding adjustment mechanism lower plate; a connecting rod guide groove and an adjusting block guide groove are formed in the C-shaped retaining ring, a connecting block is movably connected to the interior of the connecting rod guide groove of the pre-forming adjusting mechanism lower plate, an adjusting block is connected to the connecting block, the adjusting block is connected with the connecting block through a connecting column, and a handle is installed on the adjusting block through a nut. The device can effectively solve the problem that a large-wall-thickness melt blank e