Elastic force tester for manufacturing pneumatic valve spring

The utility model relates to the technical field of elastic force testers, and discloses an elastic force tester for manufacturing a pneumatic valve spring, which comprises a fixed seat, a limiting chute is arranged on the fixed seat, a screw rod is rotatably sleeved in the limiting chute, a limiting plate is sleeved on the screw rod in a threaded manner, a bevel gear is arranged at one end of the screw rod, and the bevel gear is sleeved on the limiting plate in a threaded manner. A bevel gear disc is arranged on the lower side of the bevel gear, a limiting column is installed on the upper portion of the bevel gear disc, and a motor is installed at the bottom of the bevel gear disc. A motor, a bevel gear disc and a screw driven by a bevel gear in a matched mode are arranged in the fixing base, the screw rotates to drive a limiting plate to slide in the same direction, so that the effect of clamping springs of different specifications is achieved, elasticity testing of the springs is facilitated, a pressing pl