The present invention comprises: a first tank in which paint and curing initiator or curing agent are stored, a second tank in which paint and curing initiator or curing agent are stored, and a third tank in which beads are stored; A first pump for discharging the paint, curing initiator or curing agent stored in the first tank; A second pump for discharging paint, curing initiator or curing agent stored in the second tank; An engine installed in the moving means; A hydraulic motor that converts power provided from the engine into hydraulic pressure to provide a driving force of the first pump or the second pump; A distribution valve installed between the first pump and the second pump and the hydraulic motor to uniformly distribute and supply hydraulic pressure provided by the hydraulic motor to the first pump and the second pump; A mixing block for mixing and providing a paint, a curing initiator, and a curing agent provided by the first pump or the second pump; And an air motor that converts the power provided from the engine into pneumatic pressure and transmits it to the third tank. And a spray gun installed in the moving means to spray a mixture of a paint, a curing agent and a curing initiator, wherein the spray gun is installed in the moving means, a first flow path through which a paint and a curing agent are supplied, a paint and a curing initiator A main body block having a second flow path and a driving lever to which is supplied; A cover member detachably coupled to the main body block such that the first flow passage and the second flow passage are connected to mix a curing agent and a curing initiator; It is slidably inserted into the body block, and when it is advanced toward the cover member, the first flow channel and the second flow channel are closed, and when it is moved backward, the operation is interlocked with the driving lever to open the first flow channel and the second flow channel. It is characterized by including wealth.
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