How to Clean Automotive Rearview Mirror Glass Before Coating

This equipment consists mainly of an ultrasonic generator, submersible ultrasonic transducer plate, cleaning tank, liquid storage tank, circulation filtration system, automatic temperature-controlled heating system, workpiece oscillation mechanism, slow lifting mechanism, CNC gantry robotic arm, fully enclosed cover, exhaust system, machine base, and electrical control cabinet.

Process Flow

Cart Loading → Water-based Ultrasonic Cleaning → Water-based Ultrasonic Cleaning → DI Water Ultrasonic Rinsing → DI Water Ultrasonic Rinsing → DI Water Slow Pull Dewatering → Hot Air Drying → Hot Air Drying → Cart Unloading

Equipment Features

Workpiece Vertical Oscillation System

Oscillation devices are installed from the 1st tank to the 4th tank. Parts move up and down continuously during cleaning with a 50 mm stroke and 20 cycles per minute. It adopts an imported oscillation motor, linear bearings, and an all-stainless steel oscillation frame.

Constant Temperature Control System

Equipped with Omron digital temperature controller from Japan. The temperature is adjustable and configurable, with a control range from room temperature to 100℃ and control accuracy within ±3℃ of the set value.

Circulation Filtration System

Cleaning liquid inside the tank forms an internal circulation through baffles, circulation pump, filter, pipeline and ball valve to filter out solid contaminants. A stainless steel pump is used with optimized flow and head capacity to remove suspended particles efficiently. A pressure gauge is fitted at the circulation outlet.

Spray System

The spray system is composed of high-quality stainless steel water pumps, PVC spray pipes and umbrella-style spray nozzles. One set of five nozzles is installed on both the left and right sides of the cleaning tank.

CNC Light-duty Gantry Multi-Arm Robotic System

• All vertical and horizontal movements of the multi-arm manipulator are fully electrically driven.
• The manipulator transfers cleaning baskets vertically and horizontally to complete the entire automatic cleaning process.
• Rated lifting capacity: 20 kg × 8 units; Maximum lifting capacity: 30 kg × 8 units.
• Built-in cleaning time timer; processing cycle adjustable from 2 to 30 minutes continuously.
• Supports automatic and manual operation modes. Non-contact proximity sensors are used for positioning, and mechanical limit switches for travel control.
• The manipulator automatically returns to the home position after each full cycle.

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Ultrasonic Cleaner Q&A

Q: How to choose a suitable ultrasonic cleaner?

A: The lower the frequency, the stronger the cleaning impact, and the greater the effect on the workpiece surface.

Q: Can small ultrasonic cleaners be used for jewelry cleaning?

A: Yes. Ultrasonic cleaning only removes surface dirt and grime without damaging the internal structure of jewelry.

Q: What materials are used for automotive rearview mirrors?

A: The mirror lens is made of slightly convex glass. Brackets and accessories are mostly plastic. Electric rearview mirrors also contain built-in motors and gear components.

Q: Is higher frequency always better for ultrasonic cleaning?

A: Low frequency is ideal for heavy particles and heavy oil contamination. High frequency is more suitable for delicate and tiny precision parts.

Q: Why does the tank body get very hot when using a small ultrasonic cleaner?

A: High-frequency ultrasonic vibration generates thermal energy. With relatively high power output, the heat cannot dissipate quickly, causing the tank temperature to rise.

Q: Can ultrasonic cleaners work with plain water only?

A: It depends on the application.Small household units for items like eyeglasses can work well with pure water only.For heavy oil and greasy contamination, dedicated cleaning detergent is required for optimal results.