In today's optoelectronic industry, Indium Tin Oxide conductive glass has become a key basic material for high-end products such as touch screens, liquid crystal displays, and solar cells. This special glass is coated with a transparent conductive film on its surface, endowing it with both excellent optical transparency and electrical conductivity. However, the requirements for surface cleanliness before and after ITO coating are extremely strict - even micron-sized particle contaminants, grease residues or water stains can lead to serious quality problems such as uneven coating, decreased conductivity or failure of touch function.

Traditional cleaning methods have obvious deficiencies in meeting the cleaning requirements of ITO conductive glass: manual wiping is prone to scratches and static electricity; Ordinary ultrasonic cleaning is difficult to remove sub-micron particles. However, the water stains remaining after conventional rinsing will affect the uniformity of the film. The manufacturing of precision electronic components requires a cleaning solution that can achieve all-round, non-destructive and ultra-high cleanliness. The VGT-1509FH ultrasonic cleaning machine launched by Weigute Company is a professional device developed precisely to meet this demand. Through a 15-tank systematic cleaning process and multiple technological innovations, it meets the full-process cleanliness requirements of ITO conductive glass from substrate cleaning before coating to finished product treatment after coating.

The core value of this equipment lies in resolving the three major contradictions in the cleaning of high-end optoelectronic materials: the balance between cleanliness and damage rate, the contradiction between drying efficiency and water stain residue, and the challenge of large-scale production and ensuring the yield rate. Its technical design fully takes into account the material properties and production process requirements of ITO glass, making it an indispensable key equipment on modern optoelectronic manufacturing lines.

The core technical advantages of VGT-1509FH:

I. Ultrasonic System and Throwing Mechanism:

The cleaning efficiency of VGT-1509FH primarily stems from its advanced ultrasonic generation system. The equipment adopts the fourth-generation ultrasonic generator independently developed by Weigute, in combination with high-quality transducers, to generate ultrasonic audio signals above 20kHz. These high-frequency sound waves form a "vaporization phenomenon" (cavitation effect) in the cleaning solution, generating tens of thousands of micrometer-sized bubbles. Bubbles form in the negative pressure zone and instantly close in the positive pressure zone, generating an instantaneous high pressure of over 1,000 atmospheres. This continuous micro-explosion effect can thoroughly remove nanoscale particles, polishing powder residues and organic contaminants from the surface of ITO glass, and can effectively clean even the micro-pores and crevice areas.

To enhance the cleaning effect, the equipment is specially designed with a multi-axis linkage throwing system. This system drives the linear slider through an eccentric wheel, causing the cleaning basket loaded with glass to move up and down regularly in the tank. This kind of exercise brings multiple benefits：

1. It prompts the glass to undergo displacement changes in the liquid, eliminating the dead corners where ultrasonic waves may exist.

2. Increase the relative friction between the workpiece and the cleaning solution to enhance the efficiency of contaminant stripping.

3. Avoid stacking and colliding lightweight ITO glass in a strong ultrasonic environment.

4. Reduce the bubble shielding effect to ensure the uniform distribution of ultrasonic energy.

The throwing speed can be adjusted within the range of 3 to 10 times per minute according to the thickness of the glass and the degree of contamination, fundamentally ensuring the adaptability and consistency of the cleaning effect of various ITO glass products.

Ii. Multi-stage Filtration and Environmental Protection Design：

In response to the contaminants generated during the ITO glass cleaning process, the VGT-1509FH is equipped with an intelligent multi-stage filtration and circulation system. Its technical features include:

1. Adjustable precision filtration: It adopts a dual configuration of a detachable filter screen before the pump and a filter after the pump. The filtration accuracy is adjustable within the range of 1-50μm, effectively capturing suspended particles, metal debris and fiber contaminants.

2. Self-circulation oil-water separation: The liquid storage tank is designed as a double-chamber structure through a partition to automatically separate and recycle the oil stains in the cleaning solution, thereby enhancing the utilization rate of the solution.

3. Real-time pressure monitoring: A pressure gauge is installed before the filter. When the pressure abnormally rises due to blockage, an alarm will be triggered to prompt the filter element to be replaced.

4. Thermal management system: Equipped with 4.5KW stainless steel heating tubes and cooling water solenoid valves, the constant temperature control of the cleaning solution (RT-100℃ range) is achieved through temperature sensors.

This filtration system significantly extends the service life of the cleaning agent, reduces chemical consumption by over 30%, and ensures that the concentration of contaminants in the cleaning solution is always below the critical value that affects the surface quality of ITO glass.

The equipment also embodies modern environmental protection concepts, adopting a process route that combines environmentally friendly water-based solvents with pure water rinsing. Compared with traditional CFC solvent cleaning, water-based systems avoid damage to the ozone layer. Through the design of circulating filtration and mother-child tanks, the consumption of pure water is reduced by 40%, and the discharge of wastewater is decreased by 50%. This not only ensures the quality of cleaning but also significantly reduces the environmental burden.

Iii. Intelligent Control System and Stable Structure：

Intelligent operation is another core advantage of the VGT-1509FH. The equipment adopts a PLC centralized control system, which precisely controls all variables such as water intake and drainage, cleaning temperature, ultrasonic power, processing time, and drying parameters through a human-machine interface. Operators can preset and store multiple sets of process formulas according to the different specifications and contamination levels of ITO glass, achieving "one-click switching".

The structural design of the equipment also embodies the concept of industrial reliability:

1. All-stainless steel structure: The inner tank is made of 304 stainless steel and welded as a whole, which is resistant to acid and alkali corrosion and avoids metal ion contamination.

2. Modular layout: 15 functional slots are scientifically arranged, and each system operates independently yet collaboratively.

3. Transparent protective design: A 1.0mm thick electrolytic plate powder-coated shell is equipped with an acrylic movable door and observation window, facilitating process monitoring.

4. Safety protection system: Integrated CO₂ automatic fire extinguishing device and overflow alarm to ensure the safety of high-temperature processes.