Automatic valve rod assembling device

The utility model discloses an automatic valve rod assembling device, relates to the technical field of part assembling equipment, and aims to solve the problems that the reject ratio is high and thevalve rod assembling efficiency is reduced by manual operation due to the fact that screws are manually fastened during valve rod assembling and the force and the strength are difficult to control. According to the technical scheme, the automatic screw locking device is characterized by comprising a base, an automatic screw locking mechanism arranged on the base and a clamping mechanism arranged on the base and used for clamping a valve rod; the automatic screw locking mechanism comprises a pressing air cylinder fixed to the base, a supporting plate connected to the driving end of the pressingair cylinder, and a pneumatic screwdriver arranged on the supporting plate. The pressing cylinder drives the positioning die upper die and the pneumatic screwdriver to move downwards; when the valverod is pressed by the upper