With the advantage of double-glass photovoltaic modules in power generation efficiency, service life and other aspects in recent years, its market share поступово збільшення і почався to be широко використовується in a різноманітність фотоелектричних power generation systems, and objectively also promo the development of photovoltaic glass backsheet perforation technology. Тому що звичайний фотоелектричний елемент компоненти тільки кришка використання фотоелектричний скло, і подвійне скло компоненти оф кришка і заднє панель є використання фотовольтаїка скло, і спинка панель фотовольтаїка скло повинна бути пробивна в a специфічна розташування в порядок до фотоелектрична комірка компоненти з те струм свинець до перехрестя коробка. Тому, the перфорація of PV скло задні листи has become an essential process in the deep-processing виробництво.
Фотоелектрика скло перфорація процес вибір
The initial drilling method for photovoltaic glass is the mechanical drilling process, but with the development and progress of technology and the the continuous improvement of production efficiency and product quality requirements, laser drilling has поступово стає the preferred drilling process in the industry.
Механічний свердління іс те використання з спеціальне скло свердлильний верстат,, the use of upper and lower two special drills at the the same time to realize the method. Це свердління метод є простим до формування мікротріщинами на краєм оф о скло отворами, відколами зламаними і іншим дефектами, so that the міцність of the ріжучий край is зменшений, and as the товщина of the скло пластина is getting тонший і тонший, the small cracks caused by cutting will also growth, серйозно впливає the якість of the перфорація. In addition, the mechanical drilling method has serious loss of drill bits, and during normal production, the workload of шліфування і ремонт свердло bits is very large, and the level of experience required for workers to operate is high. Тому, glass products with low quality requirements for dry can be mechanicly drilled.
Laser perforation is a a thermophysical process of laser and material interaction, which is determined by the laser beam properties (у тому числі лазер довжина хвилі, імпульс ширина, промінь розбіжність кут, фокусування стан, тощо) і a число теплофізичні властивості of the material. Laser perforation is the the earliest practical laser processing technology and one of the main application areas of laser processing. Hardness, high melting point of the the material traditional processing methods have been unable to meet certain process requirements. This type of processing tasks with conventional mechanical processing methods is very difficult, інодіcom even impossible, and laser perforation is not hard to realize. Laser beam in space and time is highly concentrated, the use of lens focusing, the spot diameter can be reduced to the micron level so as to obtain a higher laser power density.
- Лазер перфорація швидкість, високий ефективність, хороший економічний переваги.
- Laser drilling can obtain a large depth-to-diameter ratio.
- Laser drilling is suitable for a large number of high-density group hole processing.
- Laser can process small holes on the inclined surface of difficult-to-machine materials.
- Лазер свердління на заготовка затискання вимоги є простий, легкий до реалізувати виробництво лінія он-лайн і автоматизація.
Because the laser has high energy, high focusing and other characteristics, so that the hardness of the material is also easy to process, high melting point. And laser perforation process through the non-contact method, to avoid the mechanical impact on the photovoltaic glass such as fragile material yield impact, and gradually become the main production tool of the photovoltaic glass industry.
1.Composition of equipment
Фотовольтаїка скло онлайн лазер перфорація обладнання is part of the continuous production line for photovoltaic glass deep processing, which is an integrated equipment of light, machine and electricity, and mainly consist of accelerating conveying table, feeding conveying table (include rotating device and liquid coating device), laser perforation machine, and dischargeing conveying table (include rotating device and розрив отворів пристрій). це банка процес фотовольтаїка скло з a товщина of 2-6}mm.
Among them, the laser perforator is the core equipment of the process, which generally consists of five major components: laser, electrical control system, optical system, projection system and three-dimensional moving table, which cooperate with each other to complete the perforation task. The Laser is responsible for generating the laser light source, the electrical control system is is mainly responsible for supplying to the laser and controlling the laser output, and the optical system is to to laser beam onto the processed part of the photovoltaic glass.
2. Process Flow
The process flow of perforation process is as follow: accelerated separation → rotating/coating liquid → feeding → CCD vision positioning → laser perforation → discharging → rotating/broken hole detection.
After the glass is cleaned and dryed in the previous process, it is transported to the accelerating conveyor, which accelerates the separation of the glass, widens the distance between the glass, and leaves time interval for the subsequent perforation, and then the glass enters the feeding conveyor after accelerating the conveyor.
In the feeding conveying station, the rotating system below lifts the glass and rotates it by 90 degrees, at the same time, the cylinder drives the positioning mechanism to position the glass at 6 points, at the same time, the liquid coating device coats the glass perforated parts, after the glass is coated with liquid, it is transferred to the laser table perforated position through the belt at high speed.
After the glass is coated with liquid, it will be transferred to the punching position of the laser table through the belt at high speed. The glass will be captured by the CCD vision system at the punching position of the laser table, and judge the position and attitude of the product to complete the accurate positioning, and the laser punching machine will combine with the distance measurement data to punch the glass. After punching is completed, the conveyor belt transports the glass at high speed to the outfeed conveyor station, the rotating system lifts the glass and rotates it by 90 degrees, and at the same time conducts hole-breaking detection and then transports it backward to complete the punching.
With the progress of science and technology and the development of the times, new energy development prospects. China's photovoltaic industry in recent years has experienced a slow - fast - explosive development process, the industry scale is constantly expanding, whether in the core technology, product manufacturing, equipment, or in the market development, installation and service, etc., have certain independent intellectual property rights of the industry chain, and some of them have reached the international leading level, and occupy a pivotal position in the international market. With the growth of market demand for double-glass components and market share, the application of laser perforation technology in photovoltaic glass will continue to upgrade. The continuous development and progress of photovoltaic glass laser perforation equipment and technology is of great significance to the development of photovoltaic industry.
