The spray nozzle assembly is a critical component of the Robotic Coating Spray Arm responsible for the final stage of material application. It precisely controls the atomization, flow rate, spray pattern, and direction of liquid coatings (such as paints, sealants, or protective films) onto target surfaces, ensuring uniform coverage and finish quality in automated industrial processes. This component is designed for integration into robotic systems where consistent application is required. The assembly typically includes a nozzle tip, fluid cap, and air cap (in air-assisted systems), which work together to break the liquid stream into fine droplets. The geometry of these components and the control of fluid and air pressure determine the spray pattern (e.g., fan, cone) and droplet size. The assembly is available in various materials, including stainless steel (e.g., 303, 316), hardened tool steel, tungsten carbide, and ceramic (e.g., alumina), to suit different coating chemistries and wear conditions. Key parameters include operating pressure (1.0–1.6 MPa), flow rate (0.5–2.0 L/min), spray angle (60–120°), droplet size (20–100 µm VMD at 1.3 MPa), operating temperature (-20–80°C), and weight (0.15–0.25 kg). The standard body material is 316L stainless steel (ASTM A276), with PTFE seals for chemical resistance. Connection thread is G1/4 (BSPP, ISO 228-1), and the IP rating is IP65 (IEC 60529). These values are reference ranges and must be verified for the specific model and application. The assembly is not a standalone product; it requires integration with a robotic arm and a fluid supply system. For procurement, confirm compatibility with your coating material, pressure requirements, and mounting interface. Always consult the legal manufacturer or supplier for model-specific specifications and standards compliance.
Coating material is fed under pressure into the assembly. Internal components, typically including a nozzle tip, fluid cap, and air cap (in air-assisted systems), work together to break the liquid stream into fine droplets (atomization). The geometry of these components and the control of fluid/air pressure determine the spray pattern (e.g., fan, cone) and droplet size, which is then directed onto the workpiece by the robotic arm's positioning.
