Cutting device for composite film processing

The utility model discloses a cutting device for composite film processing, and relates to the technical field of composite films. The device comprises a mounting assembly, an extruding assembly, a stretching assembly and a cutting assembly, the extrusion assembly is located at the top of the mounting assembly and is in sliding fit with the mounting assembly; the two opposite side faces of the mounting assembly are each provided with a plurality of stretching assemblies in a clamped mode. A plurality of stretching assemblies are clamped on two opposite side surfaces of the extrusion assembly; the cutting assemblies are located on the two opposite side faces of the mounting assembly and are in threaded fit. The cutting assemblies are located on the two opposite side faces of the extrusion assembly and are in threaded fit. By rotating the threaded slender rod and starting the driving motor, the main gear rotates and drives the bevel gear to rotate, so that the two symmetrical cutting tools move relatively, pres