Drum type brake pad feeding mechanism and drum type brake pad inner cambered surface grinding machine

The utility model discloses a drum type brake pad feeding mechanism and a drum type brake pad inner cambered surface grinding machine, the drum type brake pad feeding mechanism comprises a workbench, a feeding hopper, a hopper adjusting mechanism and a pushing mechanism, the bottom of the front end and the bottom of the rear end of the feeding hopper are provided with a first channel and a second channel respectively, and the height of the second channel is larger than the thickness of a drum type brake pad; the hopper adjusting mechanism comprises adjusting transverse grooves, first bolts, first locking nuts and angle iron baffles, the multiple adjusting transverse grooves are formed in the two sides of the feeding hopper, the top ends of the first bolts penetrate through the adjusting transverse grooves to stretch into the feeding hopper and are fixedly connected with the angle iron baffles, and the two angle iron baffles are oppositely arranged; a containing space is defined by the two angle iron baffles a