Rail Transit-Reliability in Motion. Safety Assured

Automatic Conformal Coating Line for Rail Transit PCBs with Double-Side Coating & IR Curing

Quick Details:

• Full in-line automation: Automatic loader → Conformal coating machine → Sealing inspection conveyor → IR curing oven → Automatic flipping machine → Conformal coating machine → Sealing inspection conveyor → IR curing oven → Automatic unloader
• Double-side conformal coating: Flipping machine enables top & bottom PCB coating, ideal for high-density rail transit boards with components on both sides
• High-precision conformal coating: ±0.02mm repeatability via servo + ball screw drive, precisely avoiding connectors, high-voltage terminals and sensitive rail transit components
• IR curing system: Dual infrared curing ovens for uniform, stable curing, forming a durable coating resistant to high temperature, humidity, vibration, dust and electrical corrosion
• Flexible PCB handling: Electric rail width adjustment (50–450mm), fits various rail transit PCB sizes (train control, signal, power supply, communication modules)
• Multi-mode coating: Dot/line/curve/area spraying, eliminates shadow effect for uniform edge coverage on complex rail transit 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 rail transit components

This Rail Transit Industry Automatic Conformal Coating Line is a tailor-made solution for rail transit equipment manufacturers, addressing the ultra-high reliability and safety demands of train control systems, signal systems, power supply modules, communication boards and other rail transit PCBs.

The entire line integrates automatic loading, conformal coating, sealing inspection, infrared curing, automatic flipping, secondary conformal coating, secondary sealing inspection, secondary infrared curing and automatic unloading 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 rail transit 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 rail transit PCBs: it safely flips the PCB 180° after the first coating and curing pass, enabling precise coating of the bottom side components. 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 extreme environmental corrosion, extending the service life of rail transit equipment .

With a standard SMEMA interface, the line can be seamlessly connected to existing SMT production lines. The modular layout (L14620mm × W1350mm) supports flexible expansion, while the flexible programming (manual teaching + mouse-keyboard input) supports quick product changeovers for multi-type rail transit 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 strict reliability and safety requirements of global rail transit markets.