SMT PCB Selective Coating Machine for Circuit Board Three-Proof
Coating
The SMT PCB selective coating machine is specialized equipment for
three-proof coating of circuit boards, focusing on PCB protection
process requirements. As core equipment for improving product
protection performance and enabling automated spraying in
electronic manufacturing, it is widely used in various precision
electronic circuit board coating applications.
This fully automatic intelligent spraying system features
high-precision operation control for precise fixed-point spraying
operations, eliminating traditional spraying issues like overflow,
leakage, and paint waste. Through precise quantity control and
positioning technology, it forms uniform, dense protective coatings
that effectively prevent moisture, insulation breakdown, corrosion,
and aging—ensuring long-term stable operation of electronic boards
and significantly improving environmental adaptability and product
lifespan.

With strong adaptability, this PCB selective coating machine meets
diverse circuit board coating needs and supports custom solutions
for different product specifications, production processes, and
line layouts. Available in standard and online models, the online
version seamlessly integrates with automated production lines for
continuous coating operations, providing efficient automated
coating solutions that enhance productivity and reduce labor costs.
Featuring high-precision operation, intelligent control, energy
efficiency, and wide adaptability, this intelligent selective
coating machine optimizes traditional three-proof spraying
processes while balancing production accuracy and efficiency. It's
the preferred equipment for upgrading coating processes in both
small-to-medium processing plants and large-scale automated
production lines.
Application Scope
Suitable for coating applications across multiple industries,
supporting multi-panel and large-area selective coating processes.
Configurable with multiple valve setups and various valve body
configurations to meet diverse PCBA panel production requirements.
Equipment Features
- Rubber valve atomization pressure regulation with imported
precision pressure regulating valve and digital pressure gauge
- Air pressure regulation positioned on Z-axis for intuitive, direct
adjustment and improved operator efficiency
- Open model material conveying track using specially designed
stainless steel chain carrier with wear-resistant strips for
extended track life
- Dual transmission mechanisms for track amplitude modulation (double
track and adjustable seat) with manual width adjustment preventing
horn mouth phenomenon
- Wind curtains at track entrance/exit prevent exhaust gas leakage
with independent exhaust outlets for improved workshop environment
- Teaching mode programming for any spraying trajectory with
intuitive main interface
- Fault sound/light alarm with menu display and user-friendly
operation interface
- Trajectory mirroring, arrangement, and copying capabilities—edit
one trajectory for multiple panels
- Automatic data collection and display including output and single
product working time
- Automatic glue valve movement to foaming area during product
waiting to prevent nozzle curing
- Automatic glue valve movement to soaking area during product
waiting to prevent nozzle curing
Optional Features
Intelligent coating capacity detection, automatic rubber valve
cleaning, and rotating layer return to track.

Technical Specifications
| Types | Project | HN-Vision7/7a/7b/7c | HN-Vision7u |
|---|
| Coating Parameters | Coating Parameters | V-5: X=310/450, Y=450, Z=100mm, Asynchronous dual valve, fixed
spacing, single valve; V-5a: X=450,Y=450, Z=100mm, Synchronous dual valves, valve spacing
50-300mm; V-5b: X=250,Y=450, Z=100mm, Synchronize three/four valves, valve
spacing 50-160mm; V-5c: X=350,Y=450, Z=100mm, Asynchronous four valve (two spray
points), valve spacing 50-260mm; | |
| Component Maximum Height | 100mm above and 90mm below chain surface | |
| PCB Edge Space | PCBA process edge=5mm | |
| Single Coating Width | 2-30mm (depending on valve body) | |
| X,Y,Z Axis Drive Mode | Servo motor + ball screw module | |
| X,Y Axis Maximum Running Speed | 600mm/s | |
| Z Axis Maximum Running Speed | 300mm/s | |
| X,Y,Z Axis Repeatability | ±0.025mm | |
| Conveyor System | Working Direction | Left L - Right R (standard), (right R - left L optional) | |
| Conveying Height | 92 ± 20mm | |
| Transfer Speed | 2-13m/min | |
| Transfer Motor | Adjustable speed motor, speed digital display | |
| AM Mode | Manual track width adjustment, amplitude modulation width 50-460mm | |
| Valve Configuration System | Valve Arrangement | Multiple valve body combinations coordinated per product and
customer needs | |
| Atomizing Air Pressure Adjustment | Precision pressure regulating valve + digital display installation | |
| Automatic Soaking and Spitting | Multiple soaking and liquid dispensing functions to prevent valve
nozzle blockage | |
| Waste Liquid Recovery | Equipped with waste liquid recovery device | |
| Spraying Inspection | Equipped with LED and UV fluorescent detection lamp | |
| Feeding System | Feeding System | 10L pressure glue supply bucket and 2L stainless steel cleaning
bucket | |
| Equipment Site Requirements | Dimensions | L1060*W1300*H1700(mm) | |
| Equipment Weight | Approx. 530Kg | |
| Equipment Air Pressure | ≥0.4Mpa | |
| Exhaust Air Volume Requirements | 900m³/h, Exhaust outlet diameter: 150mm * 1 | |
| Device Power | AC220V 50-60Hz | |
| Total Power Consumption | 1.8KW | |
| Control and Operating System | Control Method | Industrial computer + motion control card | |
| Coating Software | MK control software + Windows 7/10 computer operating system | |
| Programming Method | Teaching/keyboard and mouse cover, manually edit parameters | |
| Communication Port | Standard SMEMA interface | |
Daily Usage Precautions
- Working Environment: Place equipment in well-ventilated, dust-free, dry areas away from
open flames and high-temperature sources. Smoking and open flames
are strictly prohibited in work areas as three-proof paints are
mostly flammable liquids.
- Power On Operation: Check power supply, air pipes, pipelines, and nozzles before
startup to confirm no leakage or looseness. Follow proper
startup/shutdown procedures and prohibit forced operation with
faults.
- Material Usage: Use equipment-compatible three-proof paints—do not mix different
coatings. Mix paint proportionally and clean filters/material
buckets regularly to prevent nozzle blockage from impurities.
- Operation Control: Do not open protective doors or touch moving mechanisms during
operation. Debug spraying parameters according to PCB
specifications and prohibit arbitrary program/parameter changes.
- Cleaning and Maintenance: Clean nozzles and pipelines after daily work to prevent coating
solidification and blockage. Regularly lubricate transmission
components, perform equipment dust removal and inspections, and
maintain records.
- Storage Management: Store coatings and diluents in sealed containers, sorted and
placed away from equipment and electrical circuits to avoid
potential hazards.

Safety Assurance Standards
- Personal Protection: Operators must wear gas masks, protective gloves, goggles,
anti-static work clothes, and avoid paint contact with skin,
respiratory tract, and eyes.
- Electrical Safety: Equipment must be properly grounded with regular inspection of
aging/damaged circuits and switches. Prohibit wet-hand operation
and non-professional circuit disassembly.
- Fire and Explosion Prevention: Work areas equipped with dry powder fire extinguishers and fire
blankets—strictly prohibit storing flammable/explosive materials.
Immediately stop machine and cut power for pipeline paint leakage.
- Emergency Response: For skin contact, immediately rinse with water and detergent. For
eye contact, continue water rinsing and seek medical attention. Cut
power immediately during fires and use appropriate fire-fighting
equipment.
- Personnel Management: Operators require professional training before start work. During
operation, dedicated personnel must be on duty with unauthorized
personnel prohibited from operating areas.
Customer feedback and after-sales communication
Selective coating machine features precise coating, low material
consumption and stable operation. Prompt after-sales handles
installation and breakdowns efficiently. Reliable performance and
considerate service gain good reviews and repeat orders.
Certification


CNSMT specializes in producing SMT PCB selective coating machines,
with stable equipment operation, precise coating, reliable quality,
and best-selling products both domestically and internationally.
The equipment has high cost-effectiveness and affordable prices,
effectively saving production costs. We are equipped with a
comprehensive after-sales system, providing installation,
debugging, technical support, and maintenance services, and
responding promptly. Relying on high-quality products and attentive
services, we have gained the trust of numerous customers. Welcome
to inquire and purchase.
Contact Information