Do you know how spray-painting robots work?
2020-03-16
With the rapid development of smart technology, painting robots have been widely adopted across various industries. The painting processes, methods, and suitable products for these robots vary. Below, we'll introduce the three main painting methods used by painting robots.
1. Electrostatic Spraying: Among these three methods, electrostatic spraying is the most widely used by painting robots. Its operating principle involves using the grounded workpiece as the anode and the paint atomizer—connected to a high-voltage negative charge—as the cathode. This causes the atomized paint particles to become charged and adhere to the workpiece surface through electrostatic attraction. Electrostatic spraying used by painting robots is commonly employed for metal coating or for workpieces with complex surface structures.
2. Air Spraying: The air spraying method used by painting robots primarily utilizes a stream of compressed air. As the air flows through the nozzle orifice of the spray gun, it creates negative pressure, which draws the coating into the gun. The atomized coating is then sprayed out and evenly distributed over the workpiece surface to form a smooth coating. The air spraying method is generally used for coating workpieces such as furniture and electronic enclosures. Furthermore, because the production costs of the air spray method are relatively low, it remains the most widely used of the three spraying methods employed by painting robots.
3. High-Pressure Airless Spraying: Compared to the air spray method, high-pressure airless spraying is a more advanced technique. It primarily uses a pressure pump to pressurize the coating to 6–30 MPa, which is then atomized as it exits through the fine orifice of the spray gun. High-pressure airless spraying offers high paint utilization and spraying efficiency, and the quality of workpieces coated by spraying robots using this method is significantly better than that achieved with air spraying. High-pressure airless spraying is generally suitable for workpieces that require high-quality coatings.
The above outlines the three spraying processes used by spraying robots. For more information on spraying processes and spraying robots, please visit the official website of Shanghai ChaiFu Robotics Co., Ltd. We are committed to addressing even your most detailed inquiries with a professional approach. Shanghai ChaiFu Robotics Co., Ltd. is fully dedicated to the R&D, production, sales, and service of industrial robots, offering a full range of industrial robot products to create maximum value for our customers.
