The invention provides a spray gun lifting mechanism for a
casting pipe. The spray gun lifting mechanism comprises a fixing device, a driving mechanism, a
mobile device and a wire guiding
system. Thefixing device comprises a door-type frame, transverse channel steel and a
motor speed reducer fixing seat. The door-type frame is formed by three pieces of transverse rectangular hollow steel and twopieces of longitudinal rectangular hollow steel. The driving mechanism comprises a speed
reducer, a variable frequency motor, a driving shaft, a steel
wire rope wheel and a steel
wire rope. The movingdevice comprises a
moving frame, a spraying gun and a composite
roller bearing. The
moving frame is formed by moving channel steel and a square
pipe. The composite
roller bearing is fixed to the moving channel steel. The wire guiding
system comprises a wire guiding
system, a wire guiding wheel bracket, an insulating sleeve and a wire guiding
pipe. The spray gun is arranged over
casting pipes of each specification and is perpendicular to the surfaces of the
casting pipes of each specification. The adsorption rate of
zinc spraying can be beneficially improved. Automatic lifting adjusting of spray gun positions required by the casting pipes of different specifications can be realized. The
automation degree is high. The adjusting speed is high. Production time is saved.