Vehicle-mounted product stoving varnish backboard machining tool

The utility model discloses a vehicle-mounted product stoving varnish back plate machining tool, relates to the technical field of vehicle-mounted products, and aims to solve the problem that a commonback plate machining tool in the prior art easily damages a back plate when fixing the back plate. A fixing bridge is installed in the working box, a servo motor is installed on one side of the fixing bridge, a speed reducer is installed below the servo motor, a large gear is installed below the speed reducer, a small gear is arranged on one side of the large gear, a ball screw is installed in the working box, and a motor is installed on the other side of the ball screw. A limiting block is arranged on the outer side of the ball screw, a ball screw pair is arranged above the limiting block, aconnecting block is installed on one side of the ball screw pair, an ejector rod is installed on one side of the connecting block, a bottom plate is installed at one end of the ejector rod, and a connecting rod is installed a