Industrial Control Industry-Reliable Coating for Mission-Critical Control

Automatic Conformal Coating Line for Industrial Control PCBs with Double-Side Coating & IR Curing

Quick Detail

• Full in-line automation: Automatic feeding conveyor → Conformal coating machine → Sealing inspection conveyor → IR curing oven → Automatic flipping machine → Conformal coating machine → Sealing inspection conveyor → IR curing oven → Inspection & collection station
• Double-side conformal coating: Flipping machine enables top & bottom PCB coating, ideal for high-density industrial control boards with components on both sides
• High-precision conformal coating: ±0.02mm repeatability via servo + ball screw drive, precisely avoiding connectors, terminals and sensitive industrial control components
• IR curing system: Dual infrared curing ovens for uniform, stable curing, forming a durable coating resistant to high temperature, humidity, vibration and electrical corrosion
• Flexible PCB handling: Electric rail width adjustment (50–450mm), fits various industrial control PCB sizes (PLC, DCS, I/O modules, industrial motherboards)
• Multi-mode coating: Dot/line/curve/area spraying, eliminates shadow effect for uniform edge coverage on complex industrial control PCBs
• SMEMA compatible: Standard SMEMA interface for seamless integration with SMT assembly lines (pick-and-place, reflow oven, AOI)
• 24/7 production stability: Industrial-grade design for mass manufacturing of industrial control components

This Industrial Control Industry Automatic Conformal Coating Line is a tailor-made solution for industrial control manufacturers, addressing the high-reliability and durability demands of PLCs, DCS systems, I/O modules, industrial motherboards and other industrial control PCBs.

The entire line integrates automatic feeding, conformal coating, sealing inspection, infrared curing, automatic flipping, secondary conformal coating, secondary sealing inspection, secondary infrared curing and final inspection/collection modules, realizing a fully automated double-side coating production flow. The core conformal coating machine adopts a high-precision servo + ball screw drive system with ±0.02mm repeatability, which accurately applies protective coating only to the required areas of industrial control PCBs, avoiding high-voltage terminals, communication interfaces and sensitive control components—effectively reducing material waste and eliminating the need for manual masking.

The automatic flipping machine is a key highlight for double-side industrial control PCBs: it safely flips the PCB 180° after the first coating and curing pass, enabling precise coating of the bottom side components. Dual sealing inspection conveyors detect coating integrity, pinholes and leakage in real time after each coating pass, ensuring the coating fully isolates circuits and prevents short circuits or electrical corrosion in harsh industrial environments (high temperature, humidity, vibration, dust). Dual infrared curing ovens provide uniform and stable heating, quickly solidifying the coating to form a dense protective layer that withstands long-term thermal stress, mechanical vibration and environmental corrosion, extending the service life of industrial control equipment and meeting IEC/ISO industrial reliability standards.

With a standard SMEMA interface, the line can be seamlessly connected to existing SMT production lines. The modular layout (L12360mm × W1350mm) supports flexible expansion, while the flexible programming (manual teaching + mouse-keyboard input) supports quick product changeovers for multi-type industrial control production. This solution not only improves production efficiency by over 300% compared with manual coating, but also reduces the defective rate to below 0.1%, helping manufacturers meet the reliability and durability requirements of global industrial control markets.