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CO2 Laser Marking Machine

Legent Laser Technology Co., Ltd.: Your Trustworthy CO2 Laser Marking Machine Manufacturer！

Our company was founded in 2010. It is a high-tech enterprise integrating R&D, production and sales of laser cleaning equipment, laser marking equipment, laser welding equipment, machine vision and related application control systems. Our team of optical, mechanical and software design experts develops complete laser solutions and various high-performance laser machines for marking, cleaning and welding.

Rich Product Range
We can produce laser cleaning machines, fiber laser marking machines, UV laser marking machines, CO2 laser marking machines, flying laser marking machines, dynamic focusing laser marking machines, automatic laser marking machines, large-format laser marking machines, laser welding machines, etc.

Leading Service
We have many years of industry experience and a complete production management, quality supervision, sales service operation system. Whether you want to buy a laser cleaning machine or a flying laser marking machine, just send your requirements by email and we can customize the product for you.

Wide Sales Area
Our laser equipment has been sold to more than 50 countries and regions around the world, including the United States, Germany, Italy, India, South Africa, Japan, Canada, etc.

Wide Scope of Cooperation
We have reached cooperation with more than 100 users in various industrial manufacturing fields such as aerospace, rail transportation, automobile manufacturing, precision machinery, electronics and electrical appliances, jewelry, craft gifts, etc., and finally completed more than 150 industry-specific laser application solutions.

Laser Marker Co2 Laser Engraving Machine

Product Deascription CO2 marking machines produce permanent marks on the surface of nonmetallic and organic materials by electronically stimulating carbon dioxide gas emissions. Feature High quality

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30w 50w CO2 Laser Marking Machine

CO2 laser marking machine is a laser etching machine that uses CO2 laser beam to engrave marks on 2D or 3D surfaces of wood, leather, cloth, bamboo, paper, ABS, PVC, epoxy resin, acrylic, glass,

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CO2 Laser Marking Machine for Leather

Leather can be a difficult material to handle for traditional tools such as blades. Tools for working with leather inevitably experience a lot of wear and tear and require regular maintenance.

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CO2 Laser Marking Machine for Non Metal

Legend's CO2 laser marking machines are widely used on most non-metallic materials, such as ceramics, PVC, ABS, acrylic, plastic, bamboo, organic materials, epoxy resin, glass, wood, and paper.

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Desktop CO2 Marking Machine

Our CO2 laser marking machine adopts imported packaged CO2 laser, equipped with high-speed scanning galvanometer and beam expansion focusing system, with high marking accuracy, large marking range

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CO2 Laser Marking Machine for Clothing

In the clothing industry, laser marking machines have incredible precision and can directly engrave many different patterns or text on fabrics without reducing the durability of the material.

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What is CO2 Laser Marking Machine

A CO2 laser marking machine is a device that uses a carbon dioxide (CO2) laser to engrave or mark various materials with permanent and high-contrast designs, text, or barcodes. The CO2 laser operates at a wavelength of 10.6 micrometers and is typically used for non-metallic materials such as plastics, acrylics, glass, wood, and certain types of paper and cardboard.

Features of CO2 Laser Marking Machine

High Marking Speed and Accuracy
CO2 laser marking machines have high-speed marking, and their accuracy is also very high. This feature makes them efficient for marking products in large quantities, as the machine can produce hundreds of pieces in a matter of minutes with high precision. This reduces production time, increases efficiency, and saves labor costs.

Non-Contact Marking
CO2 laser marking machines work on the basis of non-contact marking, which means the laser beam does not directly touch the surface being marked. Consequently, it does not cause any mechanical deformation or damage to the materials being marked. This ensures the quality of the product being marked as well as longevity.

Versatility
CO2 laser marking machines are versatile and can be used to mark almost all kinds of materials, including plastic, glass, leather, wood, paper, and metal. The flexibility of this marking method means that one machine can be used for different materials and applications, increasing cost-efficiency and reducing space occupation.

Low Maintenance
CO2 laser marking machines require minimal maintenance compared to other marking methods like inkjet or dot-matrix methods. They have fewer moving parts and require less frequent replacement of parts, making them cost-effective for long-term use.

Parts of CO2 Laser Marking Machine

Mopa Fiber Laser Marking Engraving Machine

Laser Marker Co2 Laser Engraving Machine

Laser Source
The heart of the machine, a CO2 laser tube, emits the laser beam necessary for marking. The tube contains a mixture of gases (carbon dioxide, nitrogen, and helium) that, when excited by an electrical current, produce a coherent beam of light at a wavelength of 10.6 micrometers.

Beam Expander
After leaving the laser source, the beam may need to be expanded to ensure it covers the desired area of the material. This is achieved using a beam expander.

Beam Conditioner
This component further shapes and conditions the laser beam, ensuring it has the correct intensity and focus for the marking process. It often includes lenses and mirrors.

Scanning System
Comprised of two galvanometer-controlled mirrors (scanners), this system rapidly deflects the laser beam across the material's surface to create the desired mark. The scanning system enables high-speed marking while maintaining precision.

Focusing Lens
A lens is used to focus the laser beam to a small spot size, which increases the energy density at the focal point and allows for deeper and more precise marking.

Control System
A computerized control system, usually equipped with specialized software, allows the user to design the markings and control the movement of the laser beam. It also manages the power output and speed of the marking process.

Work Table/Positioning System
The work table holds the material to be marked. In some systems, the table can move along multiple axes (often X, Y, and sometimes Z) to position the material accurately under the laser beam.

Exhaust System
Since the marking process involves vaporizing material, an exhaust system is crucial to remove the resulting smoke and debris. Fume extraction fans and filters are commonly used to maintain a safe working environment.

Chiller
The laser tube generates heat during operation and requires a chiller to maintain a stable temperature. The chiller circulates coolant around the laser tube to dissipate the heat.

Frame/Enclosure
The entire setup is housed within a sturdy frame or enclosure that protects the user from the laser beam and any flying debris. It also ensures that the internal components are secure and properly aligned.

How to Choose CO2 Laser Marking Machine

Material Properties
Each material that can be marked has different absorption rates, heat resistance levels, and distinguishing characteristics. All of these must be weighed when choosing the right marking machines to work with for traceability purposes.

Desired Outcome
Factors like the marking quality, depth, and durability also make a big difference when evaluating what marking machine will fit best with your production needs.

Environmental Considerations
These marks are meant to last throughout the lifespan of the product. However, for parts that are used in space, for example, the rate of exposure to elements and temperature changes dictate which marking method would be preferable. (And different parts used in aerospace production are marked differently. Check out our blog Laser Marking vs Dot Peen Marking Machines: Best Use Case by Industry for more info on that.)

Regulatory and Safety Standards
The regulations for part durability and traceability are different for the various industries that rely on part marking for different reasons. Therefore, the part marking must meet various standards while supplying reliability in the long term.

Working Principle of CO2 Laser Marking Machine

Generation of the Laser Beam
Inside the laser source, a CO2 gas mixture is electrically stimulated. This causes the atoms within the gas to release photons, generating a coherent laser beam with a wavelength of 10.6 micrometers.

Beam Control
The laser beam is directed out of the laser tube and passes through a series of optical components, including a beam expander and beam conditioner. These components help shape the beam, adjusting its size and quality to ensure it's suitable for marking.

Scanning and Focusing
The beam then reaches the scanning system, consisting of two mirrors (galvanometers) controlled by motors. These mirrors rapidly deflect the beam back and forth across the material's surface, following the pattern designed by the operator using the control software. Meanwhile, a focusing lens concentrates the laser beam to a fine point, increasing the energy density and allowing for precise marking.

Material Interaction
As the focused laser beam strikes the material, it transfers energy to the surface molecules, causing them to vibrate and absorb the laser's energy. This absorption results in localized heating, melting, or vaporization of the material, effectively removing a thin layer and creating a mark.

Mark Formation
The depth and appearance of the mark depend on several factors, including the laser's power, the material's properties, the scanning speed, and the focus settings. By carefully controlling these parameters, operators can produce a wide range of mark types, from simple lines and text to complex images and barcodes.

Cooling and Maintenance
The laser tube generates heat during operation and must be cooled to maintain performance and longevity. A chiller circulates coolant around the tube, absorbing excess heat and dissipating it into the environment. Additionally, regular maintenance of the optical components and exhaust system is essential to ensure optimal performance and extend the machine's lifespan.

How to Maintain CO2 Laser Marking Machine

Precautions Before Use

Before using the CO2 Laser Marking Machine, several precautions must be taken to ensure safe and efficient operation. Firstly, always wear safety gear such as safety glasses, gloves, or any other required personal PPE. Secondly, ensure proper ventilation in the working area. It prevents the accumulation of fumes and smoke produced during marking. Thirdly, confirm that the material to be marked is compatible with the laser’s wavelength. Always use the recommended materials by the manufacturer. Fourthly, secure the work area and ensure it is clean, organized, and free from potential hazards. Finally, always familiarize yourself with emergency shutdown procedures. Find the location of the emergency stop button.

Daily Maintenance

Wipe down the dust and debris after or before using the CO2 Laser Marking Machine. Ensure the exterior surface, focusing lens, and galvanometer mirrors are clean and ready to use. Secondly, verify that the laser beam is correctly aligned and focused for precise marking. Make necessary changes if required. You can use the adjustment screw to align the height of the galvanometer. Thirdly, ensure the cooling system is functioning correctly. In addition, check that the water or cooling fluids are at the correct levels. Fourthly, confirm that the operation switches are expected and effective.

Weekly Maintenance

A weekly maintenance routine contributes to the longevity of the device. Firstly, clean the optical path components, including mirrors and lenses. It prevents any buildup that could affect marking quality. Secondly, check whether the laser light output is expected and open the laser marking software. And then start manual marking for laser testing. Thirdly, verify if you can turn on the red light preview. Ensure the laser parameters are within the designated range. In addition, enable the red light correction feature within the laser marking software.

Monthly Maintenance

Monthly maintenance focuses on deeper checks and cleaning. It involves checking the laser sources and control unit. Firstly, check whether the laser emitted is expected. If it has weakened, use a power meter to test and conduct necessary solutions. Secondly, inspect if the power plug and connectors of the connecting cables are secure. If there are any loose contacts, take action immediately. Thirdly, clear dust from the laser’s air outlet to maintain proper heat dissipation. Remove foreign particles and debris from the device using a vacuum cleaner, alcohol, and a dust-free cloth.

Applications of CO2 Laser Marking Machine

Product Identification and Branding
CO2 laser marking machines are used to mark logos, serial numbers, barcodes, and other identification information onto products. This is common in industries like electronics, automotive, aerospace, and medical devices.

Packaging and Labeling
CO2 lasers can mark expiration dates, batch numbers, and other information onto packaging materials such as cardboard, paper, plastics, and foils. This helps with traceability and anti-counterfeiting measures.

Medical Device Marking
CO2 lasers are used to mark medical devices such as surgical instruments, implants, and equipment with serial numbers, regulatory symbols, and other required information. The precise marking ensures compliance and enhances patient safety.

Industrial Manufacturing
CO2 lasers are used in industrial manufacturing processes for marking metal, wood, ceramics, and glass. They can engrave part numbers, logos, and other information onto components and products.

Jewelry and Personalization
CO2 lasers are commonly used in the jewelry industry for engraving designs, initials, and custom messages onto metal surfaces. They are also used for personalizing items like trophies, gifts, and promotional items.

Frequently Asked Questions

Q: What is a CO2 laser marking machine, and how does it work?

A: A CO2 laser marking machine uses a carbon dioxide laser as its primary source of light to engrave or mark various materials. When the CO2 gas inside the machine's laser tube is excited by an electrical current, it emits a laser beam. This beam then passes through a set of optics that focus and shape the beam before it hits the target material. The intense heat generated by the laser vaporizes a small portion of the material's surface, leaving a permanent mark.

Q: What materials can a CO2 laser mark?

A: CO2 lasers are most effective on non-metallic materials like plastics, wood, acrylic, glass, ceramics, and certain types of rubber. They can also mark some metals, but the results may not be as clear or durable as those obtained on non-metallic surfaces.

Q: How is the laser beam controlled during marking?

A: The laser beam's movement and intensity are controlled by a computer-based system that drives a set of galvanometer-mounted mirrors. These mirrors rapidly deflect the beam across the surface of the material, following a pre-programmed path. The beam's intensity can be adjusted to accommodate different material types and desired marking depths.

Q: What is the difference between a fiber laser and a CO2 laser marking machine?

A: Fiber lasers use a solid-state laser medium, while CO2 lasers use a gas medium. Fiber lasers are more efficient and have a longer lifespan than CO2 lasers, but they are generally more expensive and limited to marking metals. CO2 lasers are better suited for marking a wider range of non-metallic materials.

Q: How do you choose the right type of laser marker for your application?

A: Choosing the right type of laser marker depends on several factors, including the material you need to mark, the desired marking depth and quality, the speed of the marking process, and your budget. It's important to consult with a knowledgeable sales representative or technical expert to determine which type of laser marker best meets your specific needs.

Q: What are the advantages of using a CO2 laser marking machine?

A: CO2 laser marking machines offer several advantages over traditional marking methods, including non-contact marking that doesn't wear down the tool, the ability to mark on a variety of materials, high marking speeds and precision, and the production of permanent marks that are resistant to fading or wearing off.

Q: How do you maintain a CO2 laser marking machine?

A: Maintaining a CO2 laser marking machine involves regular cleaning of the optical components, checking and replacing the CO2 gas cylinder as needed, ensuring proper cooling of the laser tube, and inspecting all moving parts for wear and tear. Proper maintenance ensures optimal performance and extends the life of the machine.

Q: Can a CO2 laser marker be used for cutting as well as marking?

A: Yes, some CO2 laser marking machines can also be used for cutting applications. However, this requires a more powerful laser source and specialized optics to focus the beam more tightly. Cutting operations are generally more demanding on the machine and require more frequent maintenance.

Q: What safety precautions should be taken when operating a CO2 laser marking machine?

A: Operators should always wear appropriate protective eyewear when working with a laser marker to protect their eyes from harmful radiation. They should also avoid looking directly at the laser beam or reflective surfaces that could redirect the beam towards their eyes. Additionally, the machine should be operated in a well-ventilated area to remove any smoke or fumes generated during the marking process.

Q: How long does a CO2 laser tube last before it needs to be replaced?

A: The lifespan of a CO2 laser tube depends on several factors, including the frequency of use, the type of material being marked, and the quality of the gas used in the tube. Most manufacturers estimate that a CO2 laser tube will last between 8,000 to 20,000 hours of operation before needing to be replaced.

Q: What is the cost of a CO2 laser marking machine?

A: The cost of a CO2 laser marking machine varies depending on the size, power, features, and brand of the machine. Entry-level models can be purchased for a few thousand dollars, while more advanced systems can cost tens of thousands of dollars or more. It's important to consider the total cost of ownership, including maintenance and consumables, when evaluating the investment.

Q: Can a CO2 laser marker be used outdoors?

A: While it is technically possible to use a CO2 laser marker outdoors, it is not recommended due to the potential risks associated with exposure to sunlight and other environmental factors. Outdoor use would require additional shielding and ventilation to protect the machine and operator from harmful radiation and weather conditions.

Q: How does a CO2 laser marker compare to inkjet marking?

A: CO2 laser marking offers several advantages over inkjet marking, including faster processing times, lower maintenance costs, and the ability to mark on a wider range of materials. However, inkjet marking may be more cost-effective for low-volume applications or when marking on materials that are sensitive to heat or laser radiation.

Q: What types of marks can a CO2 laser maker produce?

A: CO2 laser markers can produce a wide variety of marks, including text, numbers, barcodes, logos, images, and even complex patterns. The quality and depth of the marks depend on the power of the laser source, the speed of the marking process, and the properties of the material being marked.

Q: Can a CO2 laser marker be integrated into an existing production line?

A: Yes, many CO2 laser marking machines are designed for easy integration into existing production lines. They can be connected to automated feed systems and controlled by industry-standard communication protocols to facilitate seamless integration with other manufacturing equipment.

Q: What is the minimum marking size that a CO2 laser marker can achieve?

A: The minimum marking size that a CO2 laser marker can achieve depends on the power of the laser source and the optics used in the machine. Generally speaking, most CO2 laser markers can produce marks as small as 0.1mm in diameter, although larger marks may be necessary for certain applications.

Q: How does a CO2 laser marker affect the environment?

A: CO2 laser marking machines have a relatively small environmental impact compared to traditional marking methods. They do not require the use of inks or solvents that can be harmful to the environment, and the heat generated by the laser does not produce harmful emissions. However, proper disposal of any waste materials generated during the marking process is still necessary to minimize environmental impact.

Q: What training is required to operate a CO2 laser marking machine?

A: Operating a CO2 laser marking machine requires basic knowledge of the machine's operation and maintenance procedures. Many manufacturers provide training materials and videos to help new operators learn how to use the machine safely and effectively. Additionally, attending a hands-on training course offered by a certified instructor is recommended for individuals who need more comprehensive instruction.

Q: Can a CO2 laser marker be used for engraving?

A: Yes, CO2 laser markers can be used for engraving applications. In fact, they are often preferred for engraving non-metallic materials like wood, acrylic, and glass due to their ability to produce deep, high-contrast marks. The engraving process involves removing a layer of material to reveal the underlying surface, resulting in a detailed and visually appealing engraving.

Q: What is the future of CO2 laser marking technology?

A: As technology continues to advance, we can expect to see improvements in the performance, efficiency, and versatility of CO2 laser marking machines. Future developments may include higher power lasers for faster processing times, advanced optics for improved marking quality, and integrated automation systems for increased productivity. Additionally, the integration of artificial intelligence and machine learning technologies may enable more sophisticated marking applications and enhanced user experiences.

We're well-known as one of the leading co2 laser marking machine manufacturers and suppliers in China. If you're going to buy high quality co2 laser marking machine with competitive price, welcome to get pricelist and quotation from our factory. Also, customized service is available.

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