3D Vision of Injection Molded Part

Problem Statement; Customer required an automated machine that could inspect plastic injection molded parts for critical dimension and physical defect prior to assembly. Cycle rate required was two seconds per part. Rejects are quarantined into a locked bin with verification. Vision inspection is performed using two Keyence LJV- 7200 lasers mounted so their scan range can capture the entire top and bottom of the part. Vision performance criteria are as per below;

• Broken terminals walls
• Chipped surfaces
• Broken or missing plastic protrusion
• Feature height
• Blocked holes from flashing