Details
This dedicated automatic coating line is specially designed for automotive grilles, home appliance ventilation grilles, barbecue racks and other grid-structured workpieces featured with dense holes, large hollow areas and numerous sharp edges. It effectively solves major industry pain points including spraying blind spots inside grids, uneven film thickness on edges, paint accumulation in hollow sections and poor high-temperature corrosion resistance. Adopting the combined configuration of 3-axis reciprocating mechanism + rotary fixture + high-efficiency electrostatic atomization, it delivers superior penetration performance, uniform coating, excellent heat resistance and outstanding cost efficiency, fully differentiated from conventional spraying lines.
Core Differentiation
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VS General Reciprocating Painting Line
General reciprocating lines are designed for flat or shallow curved workpieces with fixed moving tracks, which easily cause insufficient coverage inside grids and thin coating on edges.This grill dedicated line is equipped with 3-axis reciprocating unit + 5–15 rpm workpiece rotation, and spray guns with an adjustable angle of ±25°. It achieves deep penetration into grid cavities and full coverage without blind areas.
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VS Robotic Paint Shop
Robotic lines adopt 6-axis robots with complex programming, high initial investment and expensive maintenance, mainly applied to ultra-complex 3D components.This line uses professional reciprocating modules with simple operation and easy commissioning. It cuts total investment by around 30%, and doubles the production efficiency for grid workpieces.
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VS Fixed-Gun Paint Shop
Fixed-gun lines have massive spraying dead zones and severe paint accumulation, with finished product yield below 85%.This line combines dynamic reciprocating motion and workpiece rotation, with film thickness tolerance controlled within ±3μm, stable yield over 97% and paint transfer efficiency above 85%.
Feature And Advantage
Standard Process Flow
Loading → Rotary Fixture Positioning → Degreasing & Dust Removal → Plasma Activation (Optional) → Static Elimination → Combined Reciprocating & Rotary Spraying → Anti-accumulation Leveling → High-temperature Curing → Air Cooling → Appearance & Performance Inspection → Unloading
Specifications
Dedicated Reciprocating Spraying Unit
| Parameter Item | Technical Specification | Differentiated Features |
|---|---|---|
| Axis Configuration | Standard 3-axis (X/Y/Z), optional 4-axis swing type | X for horizontal coverage; Y for deep cavity penetration; Z for height adjustment |
| Effective Working Stroke | X: 1500~3000 mmY: 800~1500 mmZ: 1000~2000 mm | Fits large-size grilles up to 1200×800 mm |
| Reciprocating Moving Speed | 0.3~1.8 m/s stepless adjustableLow speed for grid area: 0.5 m/sHigh speed for edge area: 1.2 m/s | Ensure deep penetration for hollow grids and avoid over-spray on edges |
| Spray Gun Adjustable Angle | ±25° vertically and horizontally | Locate at grid gaps and corner positions to eliminate blind spots |
| Spray Gun Configuration | 6~12 pcs per station (top, bottom & side layout)HVLP electrostatic spray guns | Fine atomization with particle size 5~15 μm for uniform coating |
| Repeat Positioning Accuracy | ±0.03 mm | Stable moving track, film thickness fluctuation ≤2 μm in mass production |
| Working Mode | Grid mode / Edge mode / Mixed mode (one-click switching) | Adapt to various grille structures quickly |
Rotary Fixture System
| Parameter Item | Technical Specification | Differentiated Features |
|---|---|---|
| Rotation Speed | 5~15 r/min stepless adjustable | Medium-speed rotation for all-round coverage without paint sagging |
| Single Fixture Load | ≤20 kg | Reinforced structure for heavy-duty metal & plastic grilles |
| Fixture Layout | Dense modular arrangement, non-blocking design | No shielding on grid holes and edges, maximize effective spraying area |
| Rotation Driving Mode | Gear motor + synchronous transmission | Stable operation, no shake during high-speed continuous production |
Spray Booth & Environmental System
| Parameter Item | Technical Specification | Differentiated Features |
|---|---|---|
| Environment Grade | ISO Class 8, Temperature: 22±2°C, Humidity: 55±6%RH | Stable environment to prevent paint sagging inside hollow grids |
| Airflow Design | Top air supply + multi-directional side exhaust, Negative pressure: -13~-22 Pa | Rapidly discharge excess paint mist to avoid accumulation in grid gaps |
| Booth Material | Full stainless steel inner wall + anti-sticking coating | Easy cleaning, resist paint adhesion and long-term corrosion |
Application Areas
- Workpiece: Automotive front grille, rear grille, decorative grille (PP raw material)
- Process type: Primer → Base coat → Clear coat (3-coat system)
- Production mode: Continuous automatic operation
Honglichang Serve
Professional Solution: Provide one-stop customized solutions for automotive plastic parts spraying, including scheme design, 3D layout, equipment manufacturing, on-site installation and commissioning.
Global Service Support: Support overseas project installation, professional staff training, 24/7 online technical support. 1-year full equipment warranty and long-term spare parts supply.
Project Experience: Mature cases for automotive PP grille spraying lines, exported to many countries, serving mainstream automotive supporting manufacturers.
Certificate
- National High-Tech Enterprise: Leaders in innovative automotive coating systems.
- ISO 9001 Quality Management: Consistent, top-quality PP ABS spray painting.
- ISO 14001 Environmental Management: Eco-friendly car parts paint shop solutions.
- ISO 45001 Occupational Health: Safe operations for every automotive coating line.
- Three National Invention Patents: Cutting-edge PP ABS spray painting tech.
- Seven Software Copyrights: Smart automation for precise automotive polymer coating.
- 57 Utility Model Patents: Practical innovations for car coating efficiency.
- General Contracting Qualifications: Expertise in mechanical and environmental engineering.
FAQ
Q: How do you guarantee our quality standards?
A: We layer in quality: offline robot programming optimizes spray paths first, SCADA logs every parameter (full traceability), and we can add automated vision checks for 100% surface inspection. One client matched their OEM's strict standards on the first try.
Q: How fast can you set up a car parts paint shop?
A: 3-6 months with modular parts.
Q: Does it work for EV production lines?
A: Yep, it's perfect for EV parts like BYD's, with eco-friendly coating.
Q: How much maintenance is needed?
A: Daily wipe-downs, quarterly checks. Downtime's under 2% with our support.
Q: Can it fit in a small factory?
A: Absolutely. We design compact layouts-even multi-level (mezzanine) setups to save floor space. Our 3D simulation lets you see the layout first, so we maximize output per square meter. A Guangzhou client with a tight space now runs 2 lines where they used to fit 1.
Q: Is this a fully unmanned, "lights-out" factory system?
A: While highly automated for minimal supervision, the system is engineered for operational excellence with strategic human oversight. Tasks like fixture loading, final quality audit, and system monitoring are essential for ensuring ultimate reliability and quality, creating a perfect synergy between automation and human skill.
Power up your production with a smart painting line that works. Reach out to Honglichang for a custom solution and a free consultation. Let's talk!
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