Grooving machine capable of adjusting depth

The utility model discloses a grooving machine capable of conducting depth adjustment, and belongs to the field of grooving machines, the grooving machine comprises a supporting frame, the top of the supporting frame is fixedly connected with a processing box, the top of the supporting frame is fixedly connected with a supporting plate, the interior of the supporting plate is movably connected with a first rolling wheel in a sleeved mode, and a limiting groove is formed in the first rolling wheel; the top of the treatment box is sleeved with a threaded column in a threaded manner, and the lower end of the threaded column is movably sleeved with a lifting plate; through arrangement of a threaded column, when the depth of a groove needs to be adjusted during grooving of a paperboard, the threaded column is rotated, so that the threaded column drives a lifting plate and a limiting plate to drive a rotating shaft to move downwards, namely, a second rolling wheel is driven to move downwards, and an extrusion block