Paperboard positioning structure of waste cleaning machine

The paperboard positioning structure of the waste cleaning machine comprises a machine body, a workbench is fixedly connected to the top end of the machine body, a support is arranged on one side of the top end of the workbench, a positioning mechanism is arranged in the workbench, and a collecting assembly is arranged in the machine body; the positioning mechanism comprises a mounting frame fixedly connected to the interior of the workbench, a connecting box is fixedly connected to one side of the mounting frame, two-way screws are symmetrically and rotationally connected to the two sides of the interior of the mounting frame, L-shaped plates are symmetrically arranged in the mounting frame, and the two ends of the L-shaped plates are connected to the outer side walls of the two-way screws in a sleeving mode and are in threaded connection. And baffles are symmetrically arranged on the top side of the L-shaped plate, and connecting rods are symmetrically and rotationally connected to the interior of the conne