Hardware clamp capable of rapidly positioning

The hardware clamp comprises a base, an exhaust pipe, an inflation bag, a pressing plate, a rotating shaft, an eccentric wheel, a sliding base, a clamping plate, an air cylinder, a sleeve, a sliding rod, a stop block, a baffle, a spring, a guide rod, a connecting rod, an air guide pipe, an installation cylinder, a driving base, a lead screw, a driving bevel gear and a driven bevel gear. The rotating rod drives the lead screw to rotate through the driving bevel gear and the driven bevel gear, the lead screw drives the sliding base to move in the direction of the installation cylinder through the driving base and the connecting rod, the sliding base drives the clamping plates to move in the direction of hardware, and therefore the multiple clamping plates can be controlled at the same time; and the clamping plates which are not in contact with the hardware are finely adjusted and clamped through the air cylinders, so that the operation is more convenient and faster, the working intensity of workers is greatly r