The Importance of Onion Sorting Machines

Onions are notoriously tricky to process due to their high percentage of defects and the presence of foreign objects in every batch. Enter the onion sorting machine, a technological marvel designed to meticulously separate the good from the bad, ensuring top-quality onions for consumers.

How Does an Onion Sorting Machine Work?

1. High-Resolution Optical Lenses: These machines incorporate high-speed, high-resolution color and near-infrared (NIR) cameras. These cameras are strategically positioned on opposing sides of the falling onions. As each onion descends, the vision system captures multiple images of its entire surface area. This comprehensive inspection allows the sorter to detect faults, defects, and foreign objects with remarkable precision.

2. Pulsed LED Technology: The sorting machines utilize pulsed LED light sources, a key advantage in detecting tough defects. The onions are exposed to rapid strobing lights of varying frequencies in both the NIR and visible light spectrums. These fast light pulses enable the cameras to capture multiple images, revealing irregularities that are invisible to the naked eye.

3. Sorting for Onion Defects: By combining pulsed LED lighting, high-speed RGB and infrared cameras, and intelligent vision software, the onion sorting machine identifies variations in size, color, shape, and quality. The resulting sorted onions match your preferences perfectly, free from irregularities such as mold, peel, or rot. Additionally, the sorter efficiently removes extraneous materials like plastic, wood, mud, and rocks that may be present in the batch.

Types of Onions Sorted

These versatile sorters handle all onion varieties, including:

• White Onions
• Red Onions
• Peeled Onions
• Diced Onions
• Unpeeled Onions

Whether you’re processing red, white, peeled, unpeeled, chopped, sliced, or diced onions, the optical sorter ensures consistent quality and safety.