Three-Proof Coating Visual Comprehensive Tester
Keywords:
Category:
UV Glue Spray Detection
Product accessories:
Helpline:
Three-Proof Coating Visual Comprehensive Tester
I. Equipment Function Description
This device is primarily designed for PCBs. Products undergoing online inspection in the conformal coating application area typically exhibit defects such as missed coatings, over-spraying, and paint splatter on protective components. These products can be positioned either before the curing oven (at the wet-film station) or after (at the dry-film station), allowing for simultaneous testing of both sides. The process relies primarily on the visual analysis of distinct color characteristics produced by the conformal coating under UV light. Key inspection items include:
You Detecting multiple sprays, overspray, and missed spots—see the image below.

You Scan the QR code, see the image below. 。

The operation method is as follows: Place it on the customer's production line, allow the product under test to flow into the inspection equipment, move to the designated photoelectric position, and then trigger the upper and lower CCDs. The camera captures signals to take photos, and a professional image analysis platform—GOI—is available. The platform performs intelligent image analysis, replacing manual visual inspection. It then sorts parts into GOOD and NG categories before dispensing them.
The entire detection process is automated, rapid, intelligent, and standardized—ensuring consistent quality while enabling fast, standardized testing.
Since the entire inspection process is fully automated, one person can manage multiple devices, boosting efficiency while significantly reducing labor costs.
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Name |
Configuration Details |
|
Measurable Dimension Range (PCB Size) |
20×20–450×550 mm |
|
Testing Items |
The areas on the circuit board that must be coated with conformal coating, the areas that must remain free of coating, and oil contamination |
|
Detection accuracy |
0.1mm |
|
Camera |
2 industrial-grade high-precision CCD color cameras |
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Pixel |
10 million, with a precision of 0.069 mm/pt |
|
Types of Light Sources |
UV lamp, white strip light |
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Photography method |
Two cameras each take 4 shots. |
|
Test speed |
200mm x 150mm/s |
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Transmission Method |
Orbital transportation |
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Transfer Orbit |
Utilizing rail-driven transmission, with adjustable width, height, and speed. |
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Front and back |
Supports front-to-back testing |
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Misprinted |
Support printing NG information for defective subboards |
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2D Barcode Recognition |
The barcode on the reverse panel matches the barcode on the corresponding front panel. |
2. Equipment Testing Procedure
Test Flowchart:

3. Project Cases
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