The Double-Sided Rigid PCB Inline AOI Machine is an automated optical inspection system designed for high-speed, high-precision inspection of rigid bare PCBs during PCB manufacturing and fabrication.

The machine uses advanced machine-vision and optical inspection technology to automatically inspect PCB circuit patterns and identify manufacturing defects on both the top and bottom sides. It is designed for integration into automated PCB production lines, helping manufacturers improve inspection consistency, reduce manual inspection requirements, and detect defects at an early stage.

The system is particularly suitable for FR-4, CEM and other rigid PCB materials, including double-sided and multilayer circuit boards.

Key Advantages

• Double-Sided Inspection – Automated inspection of both PCB surfaces.
• High-Precision Optical Inspection – Detects small circuit-pattern abnormalities and manufacturing defects.
• Inline Production – Designed for integration with automated PCB fabrication lines.
• Automatic Defect Detection – Reduces dependence on manual visual inspection.
• Fast Inspection – Supports continuous inspection for high-volume PCB production.
• Consistent Quality Control – Provides repeatable inspection results.
• Non-Contact Inspection – Optical inspection minimizes physical contact with the PCB surface.
• Automatic Alignment – Helps maintain accurate inspection positioning.
• Digital Inspection Data – Inspection results can be recorded for production-quality management.
• Reduced Labor Requirements – Automates repetitive PCB inspection operations.
• Early Defect Detection – Helps identify PCB manufacturing problems before boards proceed to subsequent processes.

Defects That Can Typically Be Inspected

Depending on the machine configuration and inspection software, the system can identify defects such as:

• Open circuits
• Short circuits
• Broken traces
• Missing or abnormal copper patterns
• Excess copper
• Insufficient copper
• Line-width abnormalities
• Line-spacing abnormalities
• Pattern defects
• Missing pads
• Notches and protrusions
• Pinholes
• Scratches and surface abnormalities
• Foreign material
• Hole-position abnormalities
• Circuit-pattern contamination

Main Applications

1. Rigid PCB Manufacturing

The machine is mainly used for bare rigid PCB inspection during PCB fabrication.

Typical products include:

• FR-4 PCB
• CEM PCB
• Double-sided PCB
• Multilayer PCB
• Copper-clad circuit boards
• Fine-line rigid PCB
• High-density rigid PCB

2. Double-Sided PCB Inspection

For double-sided boards, the AOI system can inspect circuit patterns on both surfaces, helping manufacturers identify defects that may otherwise require separate manual inspection processes.

3. Multilayer PCB Manufacturing

It can be incorporated into manufacturing processes for multilayer PCBs to help verify circuit-pattern quality during fabrication.

4. PCB Fabrication Process Inspection

Typical placement in a PCB manufacturing workflow can be:

PCB Material → Imaging/Exposure → Development → Etching → Cleaning → AOI Inspection → Repair/Verification → Next Process

The exact position depends on the PCB manufacturer's production process and machine configuration.

5. Fine-Line PCB Manufacturing

For higher-density circuit boards, AOI inspection can help detect abnormalities in:

• Fine traces
• Line width
• Line spacing
• Copper patterns
• Pads

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