Etching machine convenient to fix and used for circuit board processing

The utility model discloses a circuit board processing etching machine convenient to fix, which comprises a box body fixedly provided with an etching box and a clear water box, the top of a support of the box body is provided with a moving assembly, the moving assembly is provided with a lifting assembly, the lifting assembly is provided with a first motor and a mounting plate, and the mounting plate is internally provided with a sliding groove. And a movable plate and a fixed plate are arranged on the sliding groove, a first threaded rod is fixedly installed on an output shaft of the first motor, a second threaded rod is installed on the first threaded rod through a driving gear and a driven gear, the other end of the second threaded rod is rotationally installed in the fixed plate, and the movable plate is installed on the second threaded rod in a threaded mode. According to the utility model, the sliding distance of the movable plate can be controlled through the rotation time of the first motor, so that t