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MEIDING Inline AOI PCB Visual Inspection Machine-Dual-Stage Closed-Loop Inspection Significantly Improves PCB Yield
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MEIDING Inline AOI PCB Visual Inspection Machine-Dual-Stage Closed-Loop Inspection Significantly Improves PCB Yield

2026-03-02

1.Core Advantage: Inline Integration to Build a Quality Closed Loop

Pre-Etching Circuit Inspection — Control Defects at the Source

The equipment can be directly connected to the circuit printing line. After micro-curing, PCB boards are automatically transferred to the AOI Inspection Machine without manual handling.

①Avoid contamination or oxidation caused by manual contact

②Avoid discoloration caused by long-term stacking

③Detect open circuits, short circuits, pinholes and other defects in advance through AOI Defect Detection

④Non-defective boards automatically proceed to the etching process

Through early Open / Short Circuit Detection, PCB Trace Inspection, Pad Defect Detection, and Missing / Extra Copper Detection, defective boards are screened before entering the etching process, reducing material waste and rework costs.

Post-Etching Circuit Inspection — Prevent Scratches and Stacking Risks

The Inline AOI Machine can be directly connected to the etching and drying production line.

  • After etching, boards directly enter the AOI Machine
  • Avoid scratches caused by manual handling
  • Avoid stacking pressure damage affecting circuit integrity
  • Automatically separate defective boards
  • Qualified boards automatically flow to the next solder mask printing process

This seamless automation forms a complete PCB Defect Inspection System and PCB Quality Inspection Machine, realizing automated quality control.

Dual Inline AOI Machines for Higher Yield

Two Inline AOI Machines can be configured:

  • Pre-etching inspection
  • Post-etching inspection

Dual protection greatly reduces batch defect risks and improves overall line stability and finished product yield.

Each AOI Equipment unit is equipped with a buffering loading and unloading robotic system:

  • Automatically adjust production rhythm
  • Prevent line congestion
  • Maintain smooth production flow

At the same time, the system also supports Offline AOI Machine mode, allowing independent inspection according to different production requirements.

  1. Core Inspection Capability — High Precision and Intelligent

While offering inline advantages, MEIDING also ensures strong inspection performance as a High Precision AOI Machine.

Dual inspection modes:Gerber file comparison mode&Image comparison mode

Suitable for various rigid single-side PCBs, including aluminum boards, fiberglass boards, acrylic boards and other flat rigid materials.

The intelligent lighting system allows operators to manually select upper and lower light sources according to different board types, displaying real-time defect images and template comparison results.

Equipped with AOI Verification Station and Intelligent AOI Repair Station, defects are coded and position information is shared in real time to assist accurate repair.

3.Practical Value for PCB Factories

✔ Improve overall yield
✔ Reduce material waste
✔ Lower labor cost
✔ Avoid oxidation and scratch problems
✔ Improve automation level
✔ Build an intelligent closed-loop production line

The MEIDING Inline Automated Optical Inspection (AOI) Equipment is not just a PCB Inspection Equipment solution, but a key control point for improving yield and strengthening production competitiveness.