Protective layer forming device and control method of protective layer forming device

A protective layer forming device that forms a protective layer in a tip portion in a blade length direction and in a construction range of a leading edge portion of a wind turbine blade main body formed of an FRP, the protective layer forming device comprising:

• a protective layer formation unit that forms a protective layer by spraying a construction material to the construction range with a transport gas;
• a movement mechanism that moves the protective layer formation unit in the blade length direction of the wind turbine blade main body;
• an adjustment mechanism that is attached to the movement mechanism and adjusts a position of the protective layer formation unit in a blade thickness direction of the wind turbine blade main body and an orientation of the protective layer formation unit such that a construction direction of the protective layer formation unit faces the construction range;
• and
• a control unit that controls the protective layer formation unit, the movement mechanism, and the adjustment mechanism, wherein
• the protective layer formation unit includes
• a first spray unit that forms the protective layer by spraying a first construction material to a first construction range centered on a first axis,
• a second spray unit that forms the protective layer by spraying a second construction material to a second construction range centered on a second axis, and
• an angle changing unit that changes an inclination angle of the second axis with respect to the first axis in a plane orthogonal to the blade length direction.