Bubble scratching device and bubble scratching method for rubber calendering

The invention relates to the field of rubber calendering bubble scratching, in particular to a rubber calendering bubble scratching device and a bubble scratching method. The device comprises a rack, a calendering roller, a bubble cutter driving mechanism and a bubble cutter, the bubble cutter driving mechanism comprises a driving motor, a speed reducer, a driving gear, a driving rack, a driving base, a driving cylinder, a driving shaft, a cutter holder, a cutter shaft and a rotating bearing; the driving motor is connected with the driving gear through the speed reducer, and the driving gear is meshed with the driving rack; the driving rack is fixedly connected with the driving base, and the driving air cylinder is fixed to the driving base. The extending end of the driving cylinder is connected with the driving shaft, and the driving shaft is in up-down sliding fit with the driving base; the bubble cutter is fixed on the cutter shaft, and the cutter shaft is rotationally connected with the cutter holder; the