Automated Spray Painting Line

I. Introduction

The automated spray painting line is a highly automated coating system designed for the surface finishing of product casings and various components. It efficiently performs cleaning, spraying, and curing processes, ensuring uniform, durable coatings that meet environmental standards.

II. Application Areas

The automated spray painting line is evolving toward "zero-defect coating" and "carbon-neutral factories" by integrating water-based coatings and nanocoating technologies, further driving the green transformation of manufacturing. Its key application areas include:

1. Home Appliances

• Surface painting for washing machines, refrigerators, air conditioners, improving appearance and corrosion resistance.

2. Industrial Equipment

• Coating for industrial machines, pumps, and fans, enhancing durability and corrosion resistance.

3. Automotive Industry

• Spray painting for vehicles, engines, and starter motors, ensuring aesthetic appeal and rust protection.

4. Aerospace

• High-standard anti-corrosion and weather-resistant coatings for aircraft and aerospace components.

5. Shipbuilding

• Protective coatings for ships and propulsion systems, improving resistance to seawater corrosion.

6. Renewable Energy

• Coating applications for wind power and electric vehicle components, improving durability and aesthetics.

7. Medical Equipment

• Spray coatings for medical devices, ensuring smooth surfaces, easy cleaning, and corrosion resistance.

8. Agricultural Machinery

• Coatings for tractors, harvesters, and other agricultural equipment, improving durability and rust prevention.

III. Technical Overview

1. Basic Principles

• The system automatically sprays coatings onto surfaces, forming a protective layer that enhances corrosion resistance, rust protection, and aesthetics.

2. Core Process Flow

• Conveying System

• Uses conveyor belts, overhead chains, or AGV carts to precisely transport components between workstations, supporting continuous or intermittent production.

• Pre-Treatment Process

• Cleaning: Dry ice blasting, high-pressure spray, or ultrasonic cleaning removes oil, dust, and contaminants.

• Surface Treatment: Phosphating or passivation improves coating adhesion.

• Automated Spraying Unit

• Multi-Axis Robotic Arms: Equipped with electrostatic or air spray guns, programmed for complex surface coverage.

• Closed-Loop Control System: Real-time adjustment of paint flow and atomization pressure, reducing paint waste by 20-30%.

• Curing System

• Infrared Drying Oven: Rapidly cures primers, reducing energy consumption by 15% compared to traditional hot air drying.

• UV Curing Equipment: For photo-sensitive coatings, completes surface hardening in 3 seconds.

• Environmental Protection System

• VOCs Absorption: Activated carbon + RTO incineration ensures emissions meet GB16297 environmental standards.

IV. Technical Advantages

1. Efficiency Improvement

• Single-line capacity reaches 500-1000 pieces per hour, 3-5 times higher than manual painting.

2. Uniform Coating

• Robot path accuracy of ±0.1mm, avoiding thickness variations common in manual spraying.

3. Cost Optimization

• Paint utilization rate exceeds 85% (manual spraying is only 50-60%), reducing overall costs by 25%.

4. Safety Enhancement

• Fully enclosed system + explosion-proof design, preventing flammable gas explosion risks.

V. Development Trends

1. Digital Twin Technology

• Virtual simulation optimizes spraying paths, reducing trial production time by 30%.

2. AI Adaptive Control

• Dynamically adjusts curing parameters based on temperature and humidity, improving yield rates by 2-3%.

3. Modular Design

• Supports rapid color switching (color change cleaning time <5 minutes), enabling flexible production.