Hemming device

The utility model discloses a hemming device which comprises a base, a stamping module used for stamping a packaging box is arranged on the base, a moving assembly is arranged on the base, a lead screw transmission assembly used for driving the moving assembly to move is arranged on the base, and an inner positioning module used for positioning the packaging box is arranged on the moving assembly. An inner positioning module is arranged on the base, an outer positioning module used for wrapping the inner positioning module is arranged on the moving assembly and the base, an ejection assembly used for ejecting a formed packaging box is arranged on the moving assembly, the ejection assembly is arranged between the inner positioning module and the outer positioning module, and a lead screw is adopted for transmission positioning. The stability of the clamp in the machining process is guaranteed, the hemming quality is improved, full-automatic stamping hemming and feeding are achieved, the working efficiency is i