Hanging spraying machines, also known as collaborative spraying robots, have many advantages. First, automated spraying can get rid of the traditional manual spraying operation mode and improve production efficiency and consistency. Secondly, hanging machines can adapt to multi-variety and small-batch production modes, realize on-demand product replacement, and improve the degree of flexible operation. In addition, through the "machine replacement" strategy, robots can work in potentially dangerous work areas, avoid direct contact between workers and harmful gases, and protect workers' health. Most importantly, robot automatic spraying can ensure the consistency of spraying quality, and the qualified rate can theoretically achieve 100%, reducing the fluctuation of spraying quality caused by human factors. Based on precise calculations, the robot can accurately control the opening and closing time of the spray gun, saving a lot of paint, which is conducive to reducing costs and increasing efficiency for enterprises. Finally, the machine is suitable for multiple industries such as automobile manufacturing and furniture, providing a complete robot automatic spraying solution. These advantages make hanging spraying machines an indispensable tool in modern manufacturing, especially in the automobile manufacturing and furniture industries.