The utility model relates to a glass fiber wet process mat technical field, concretely relates to big roll of coiling mechanism of glass fiber wet process mat, include weighing device, damping roller device, slitter edge suction device, rolling change of lap cutters and unload to roll up and weigh packing plant, the utility model discloses novel structure, degree of automation is higher, can be according to the different customers' in the production needs, it is 2000mm to satisfy the biggest width, maximum diameter is for about 2300mm, greatest length be 6000m glass fiber wet process mat from movable cutter, the scaled adjustable feeding mechanism is novel in structure, the level of automation is higher, greatly reduces the labor intensity of workers, the efficiency of the work of equipment is improved, production cost is reduced, the effectual kind that increases the production, customer's demand has been satisfied.