Three-point pressing adjusting mechanism for robot welding clamp

A three-point pressing adjusting mechanism for a robot welding clamp comprises an air cylinder, a pressing arm and an angle seat. The air cylinder is fixedly connected with the angle seat; one end of the pressing arm is fixedly connected with a power output shaft of the air cylinder, the other end of the pressing arm is fixedly connected with a pressing frame, the pressing frame is of a cross-shaped structure, one supporting arm of the pressing frame is connected with the pressing arm, pressing heads are fixedly installed below the other three supporting arms of the pressing frame, and upper adjusting gaskets are arranged between the pressing heads and the supporting arms of the pressing frame. The angle seat is fixedly connected with a supporting frame, the supporting frame is of a T-shaped structure, three supporting arms of the supporting frame correspond to the three supporting arms, provided with the pressing heads, of the pressing frame in position in a one-to-one mode, supporting blocks are fixedly ins