Pick-and-place machine nozzles are not only critical components for picking and placing components during the operation of pick-and-place machines but also serve as backgrounds for cameras in optical vision systems. They utilize the principle of vacuum suction to pick up components and then place them onto the coordinates of the circuit board using compressed air. Guanshengde provides a detailed introduction to the working principle and characteristics of pick-and-place machine nozzles in graphic and textual forms.
To ensure a good background during image capture, allowing the target information to be highlighted smoothly during image processing, each nozzle is equipped with its reflective background. When capturing images, the nozzle acts as the background, enhancing the contrast and clarity of the component’s image. Different nozzles need to be selected for different components. When designing nozzles, people typically make the contact surface of the nozzle symmetrically shaped for the component, while designing the background plane of the nozzle as a matte surface without mixed colors. This background is usually designed in a single color, such as black or green.
When the pick-and-place machine’s nozzle picks up a component, ideally, the center of the component, the center of the nozzle, and the spatial center of the obtained image should align. However, in actual operation, the adjustment of the optical vision system is aimed at compensating for any deviations that may occur in practical work.
