Limiting device for internal mixer

The utility model relates to the technical field of internal mixers, in particular to a limiting device for an internal mixer. According to the internal mixer, the driving assembly arranged on the internal mixer body is matched with the pressure assembly arranged on the driving assembly, on one hand, the function of driving the top peg mechanism to move up and down is achieved through matching of the driving assembly and the pressure assembly, and meanwhile, constant pressure is further applied to the top peg mechanism through the pressure assembly; according to the rubber mixing device, the upper top bolt mechanism is arranged on the upper top bolt mechanism, so that the upper top bolt mechanism always generates relatively constant pressure on a rubber material during mixing, and therefore, the pressure applied to the rubber material can be conveniently controlled, and the mixing effect of the rubber material can be favorably improved; the annular coil mounted on the bottom plate is matched with the first ma