Junhe System Solution for Zinc-Aluminum Coating of Wind Power Bolts

Reducing manual labor for practitioners and effectively controlling every production step—from automatic feeding, selection of spraying equipment, automatic spraying process, zinc-aluminum coating material, coating process control to curing process control—Junhe provides zinc-aluminum coating solutions for wind power bolts, helping users stay competitive in the market and contributing to the development of renewable energy.

• 1.1 Feeding:

  Workpieces are pushed into the system by cart, with 5 baskets loaded simultaneously to improve efficiency and save time.

• 1.2 Transfer:

  Robotic handling reduces labor demand. The robot handles feeding for the first coat and re-feeding for the second coat, and stacks finished workpieces in two layers onto the furnace.

• 2.1 Automatic Fixed-Position Spraying:

  Workpieces are positioned accurately. The system automatically runs pre-programmed robot or reciprocator spraying paths. One dedicated path for each workpiece type saves coating material and ensures precise film thickness control.

• 2.2 Dual-Station Spraying:

  Two spraying stations operate alternately in the spray booth—one sprays while the other is loaded or flipped—creating a compact cycle and greatly improving productivity.

• Robotic handling enables two-layer stacking during curing, doubling the output of furnaces with the same length.
• High-volume hot air circulation heating ensures uniform temperature, meets curing requirements and boosts efficiency.
• Multiple heating options: LPG, natural gas, electric heating. Preheating of first-coat workpieces in low-temperature areas can use waste heat from the furnace end to save energy.

• 4.1 Automatic Transfer System:

  Chain-driven segmented conveying with independent sections and multiple position corrections ensures high positioning accuracy and stable handling at the discharge station.

• 4.2 Cooling System:

  Multi-stage cooling.The first three stages use high-flow bottom-blowing and top-exhaust cooling with shielding to prevent scalding.The last three stages use oblique fan cooling to cool M72 workpieces to within 10°C above room temperature, enabling automatic second-coating.

• Displays workpiece completion status and estimates finish time for efficient production scheduling.
• Supports parameter settings for spray pattern, atomization, flow rate, etc., to optimize the process for each workpiece.
• Automatic gun cleaning and system pause if the process is interrupted for too long, preventing quality issues.
• Allows simultaneous processing of multiple products with automatic process adjustment, eliminating human errors.
• Real-time status monitoring and fault alarm displayed on the touch screen for easy maintenance.
• Bus communication and network connection support remote maintenance.

1. Automatic feeding
2. Automatic handling
3. Front spraying
4. Manual flipping
5. Rear spraying
6. Automatic transfer to curing furnace
7. Cooling
8. Automatic transfer to spray booth for third coating
9. Automatic discharge of finished products.

The line can run independently or in a three-line linkage mode.