Composite material cutting device

The invention relates to the field of composite material production, in particular to a composite material cutting device. The technical problems that sound insulation cotton is soft in texture and light in weight, so that when the sound insulation cotton is cut, the side wall of the sound insulation cotton is easily dragged by a cutter to be bent, and the edge of a cut product is irregular are solved. According to the technical scheme, the composite material cutting device comprises an automatic cutting machine, a driving assembly and the like; the left side and the right side of the automatic cutting machine are each provided with a driving assembly. Two film rollers are controlled to move up and down to cover and press a film, then the film is tightly adsorbed downwards through a first through pipe, in this way, sound insulation cotton is tightly pressed and fixed to a supporting plate through the film, and the sound insulation cotton is fixed by adsorbing the film instead of a conventional pressing and fi