Capsule assembling tool for tire building drum

The utility model discloses a capsule assembling tool for a tire building drum. The device comprises a base ring, a pressing plate, an expanding claw, an expanding screw rod, a pressing rod, a clamp,a first screw, a first spring washer, a second screw, a second spring washer, a handle, a push rod, a connecting rod, an elastic piece, a fixed seat, a bottom plate, a connecting plate, a locking bolt, a nut and a limiting block, pressing plate is arranged on the upper end face of the bottom plate, expansion claw is arranged below pressing plate, expansion screws are arranged at the outer ends ofthe expansion claws; the inner end of the expansion screw is connected with a pressing rod; a clamp is arranged on the expansion screw rod; a first spring washer and a first screw are arranged on thepressing plate; a connecting rod is arranged in the push rod; a pressing rod is connected to the inner end of the connecting rod; the fixed seat is arranged at the outer end of the bottom plate; a threaded hole is formed in the