3D Vision of Injection Molded Part

Home > Blog > 3D Vision of Injection Molded Part

Project Details

Problem Statement: The customer required an automated machine that could inspect plastic injection molded parts for critical dimensions and physical defects prior to assembly. The required cycle rate was two seconds per part. Rejects were quarantined into a locked bin with verification. Vision inspection was performed using two Keyence LJV-7200 lasers mounted to capture the entire top and bottom of the part.

Vision performance criteria included the following:

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

Automation Equipment

  • Keyence LJV-7200 3D laser
  • Linear conveyorized track with traffic control
  • Lockable reject bin with Poke Yoke features
  • AB PLC and HMI control cabinet

Machine Performance

  • Capacity Requirement: Less than 2 seconds per piece
  • Part Types: Two
  • Poke Yoke Features: Locked reject drawer with sensor detection
  • Expected Utilization Rate: 24 hours / 7 days at 85% availability