Welding gun pressurizing device for spot welding robot

摘要

The present invention relates to a welding gun pressurizing device for a spot welding robot, the upper tip (7) is fixed to the upper gun (9) which is installed to be movable up and down at one end of the welding gun support (12), the welding gun The lower tip 8 is fixed to the welding gun 6 fixed to the lower end of one end of the support part 12, and the spot for welding while pressing the iron plate 5 with the upper and lower tips 7 and 8. In the welding machine, the ball screw 10 is rotatably coupled to the support 24 fixed to one end of the welding gun support 12 and the upper gun 9 is fixed to the lower end, and the upper gun 9 ) Is a linear lifting and lowering guide means (30) for supporting a linear lifting and lowering movement with respect to the welding gun support (12), a servo motor (13) fixed to an intermediate portion of the welding gun support (12), and the servo motor (13) Of the ball screw drive means 20 and the servo motor 13 to rotate the ball screw 10 with a driving force of Encoder 18 for detecting the amount of rotation, and the gap sensor for measuring the distance between the upper and lower tips (7), coupled to one side of the upper, lower tips (7), (8) ( 11a) and 11b, which enables precise spot welding by moving the movable finger to the correct position by the servo motor and the gap sensor so that the upper tip and the lower tip maintain the correct gap. Not only can it improve, but it also has the effect of improving productivity.