As we all know, there are various types of nozzles for SMT pick and place machines available on the market, categorized by materials such as tungsten steel, diamond steel, ceramic, plastic, aluminum, and iron. They also vary in shape, including round, square, V-shaped, and more. Choosing the appropriate nozzles can be a challenge for many newcomers to SMT assembly. Here’s a general guide on how to select SMT pick and place machine nozzles:
Nozzle materials:
- Tungsten steel nozzles: These are sturdy and durable but may turn white over time. If they turn white, they can still be used after applying oil-based pen to cover the white spots.
- Ceramic nozzles: Ceramic nozzles never turn white but are fragile and prone to breakage. Careful handling can help prevent or minimize breakage.
- Diamond steel nozzles: These are strong, durable, and never turn white. However, they are expensive and may not offer the best value for money.
- Rubber head nozzles: These are suitable for uneven or sticky components. However, they have a short lifespan. It’s recommended to buy spare rubber heads and replace them when worn out.
Nozzle sizes: For standard components, the sizes of nozzles are usually fixed. For example, in Samsung SM series machines, 0805 components correspond to CN065 nozzles, and 0603 components correspond to CN040 nozzles. However, for components of non-standard sizes or shapes, custom-made nozzles may be required.
Nozzle shapes: Nozzles come in various shapes such as square, round, and V-shaped. Custom-made nozzles are typically selected based on the shape of the components. Some may have elongated nozzles to reach into grooves, while others may have specialized shapes to accommodate specific component features such as edges or irregular surfaces. Additionally, some components may require nozzles with grooves or rubber heads to facilitate component placement.
