UV Laser Marking Machine Applications on Glass
What is UV Laser Marking Machine?
Three common types of laser marking machines are widely used: fiber laser marking machine,UV laser marking machine,CO2 laser marking machine. The most suitable machine for glass marking or engraving is the UV laser marking machine.
The principle of UV laser marking machine is using a high-energy laser beam from a 355nm UV laser to irradiate the glass surface (silicon dioxide) for optical and physical reactions.As a result, the marks left on the surface of the glass after burning and gasification occur, which is the marking process of the UV laser marking machine.
The Development History of Glass Laser Engraving
Glass is a common material in daily life, widely used in industry and construction, and can also be made into various handicrafts for retail. At the same time, glass is also a fragile material, engraving on glass can easily cause cracks.There are many traditional methods for glass marking, such as thermal processing, screen printing, etching, etc. These processes pose a great challenge to glass, and even a slight mistake can easily damage the glass.
Picture 1 Glass Manufacturing Process
So, with the continuous development of the glass industry, the requirements for the identification and processing of glass products are becoming increasingly high. Traditional marking methods often have low efficiency and unstable quality, which cannot meet market demand.
With the continuous progress of industrial technology and the rise of the laser industry, the technology of using lasers to mark and engrave glass surfaces has become increasingly mature, making glass processing safer and more efficient.
Picture 2 Traditional handmade glass carving
Three Different Methods for UV Laser Marking Machine to Engrave Glass
1. Multiple laser marking method: UV cold light laser beam burns multiple times. First, engrave a rough outline on the surface of the glass, then extend the laser beam to other areas of the outline, and then repeat the burning of these marked paths. This marking method can greatly reduce the occurrence of cracks in the glass during carving and reduce the loss rate.
2. Discrete point formation ring crack method:Scatter points are combined to form a closed-loop graphic text. In the selection of marking content, patterns and text are mainly used. After scattered identification of these contents, a closed-loop path is formed, and the glass undergoes a cooling cycle after heating to produce small patterns,thus forming a marking effect.
3. Surface crack method:Laser will produce small cracks during the laser marking process. The small cracks during the laser marking process are not immediately visible, but instead begin to appear along the laser marking after being squeezed in other areas.
UV Laser Marking on Three Different Glass Surfaces
1. UV Laser Engraving on Flat Glass
For example, the use of large format flat glass such as glass doors and glass background walls.
Picture 3 Laser engraving of flat glass
2. UV Laser marking on curved glass
Picture 4 UV laser marking on beer cups
3. Glass interior engraving
Home decoration, commercial advertising, cultural and artistic works, etc., commonly use the technique of glass engraving inside.
Picture 5 Laser engraving in commercial applications
SINO-GALVO Galvanometer UV7210-3D-300 Marking on Wine Glass
Picture 6 Link to UV7210-3D-300 Galvo Scanner
Now,let's watch a YouTube video about Sino-Galvo galvanometer UV7210-3D-300 testing on red wine glass cup .
Picture 7 UV7210-3D-300 Marking on Wine Glass
Before we are marking the glass cups, we first need to create a 3D glass cup model in the marking software and attach marking content, and then proceed with the marking operation.This is to ensure that laser marking can maintain the same accuracy during curved surface operations.Secondly, the color of the glass cup is transparent and reflects laser light, so it is necessary to apply black pigment on the surface of the glass cup or place a black base plate under the glass cup to ensure absorption of laser .
Follow as the pictures:
