1. Introduction
The LY Sunkko LA-15H02 is a multi-functional handheld downward pressure cantilever type laser welding and marking machine. Designed for high precision and efficiency, it is ideal for applications involving new energy lithium batteries and stainless steel. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your machine.
2. Safety Information
WARNING: Laser radiation can cause severe eye injury and skin burns. Always follow safety precautions.
- Always wear the provided laser protective glasses when operating the machine.
- Never look directly at the laser source or the laser beam.
- Ensure the work area is well-ventilated to dissipate any fumes generated during welding.
- Keep unauthorized personnel away from the operating area.
- Do not operate the machine if any components are damaged or malfunctioning.
- Ensure the machine is properly grounded before use.
- Avoid wearing reflective jewelry or clothing that could reflect the laser beam.
3. Package Contents
Upon unpacking, please verify that all the following items are included:
- LY Sunkko LA-15H02 Laser Welding Marking Machine (1 unit)
- Protective lenses (20 pieces)
- Wireless mouse and keyboard set (random style)
- Communication lines (2 pieces)
- Welding tool for soft pack batteries (1 piece)
- Laser protective glasses (1 pair)
4. Setup
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4.1 Placement
Place the machine on a stable, level surface. Ensure there is adequate space around the machine for ventilation and operation. The machine dimensions are 97cm (length) x 54cm (width) x 74cm (height) and it weighs approximately 140kg.
Diagram showing the machine's dimensions. 
The machine features a thickened and reinforced shell for high rigidity and stability, eliminating the need for an additional workbench. -
4.2 Power Connection
Connect the machine to an AC 220V+10% 50Hz power supply. A customizable 110V version may be available. Ensure the power source meets the machine's requirements (Input power: 3700W).
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4.3 Water Chiller Setup
The machine is equipped with an integrated dual temperature dual control constant temperature water tank for cooling. Ensure the chiller is filled with appropriate coolant and connected correctly. The cooling power is 2200W. The working environment temperature range should be 15-35°C with 10-90% humidity (no condensation).
The integrated customized chiller provides a smaller and more stable cooling solution compared to external units. -
4.4 Fiber Optic Cable
The standard fiber length is 8m. Ensure the fiber optic cable is securely connected between the laser source and the welding head.
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4.5 Communication Lines
Connect the provided communication lines as instructed to ensure proper data exchange between the control panel and the machine components.
5. Operating Instructions
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5.1 Power On and System Initialization
Turn on the main power switch. The intelligent control panel will initialize. Use the wireless mouse and keyboard to navigate the system.
The intelligent control panel allows for multiple welding mode interfaces and precision parameter adjustments. The welding key switch enables handheld movement and control. -
5.2 Setting Welding Parameters
Access the intelligent control panel to select the desired welding mode (Continuous / Modulation Pulse) and adjust parameters such as output power (1500W/2000W/3000W Max.), welding speed range (0-20000mm/s), and other precision settings. The laser wavelength is 1070±10nm.
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5.3 Positioning the Workpiece
Place the workpiece securely under the cantilever arm. The machine features a three-axis linkage mechanical cantilever for high flexibility and precision, allowing for convenient up/down movement and 360-degree rotation for precise welding.
The three-axis linkage cantilever offers high flexibility and precision for welding. -
5.4 Utilizing the Welding Height Limit Device
The welding height limit device helps improve welding quality and reduce losses by preventing poor welding or laser damage due to improper distance. It supports both forward installation (positioning height imitation) and reverse installation (height imitation).
The welding height limit device ensures optimal distance for consistent weld quality. -
5.5 Performing Welding
Hold the laser welding head and press down easily to initiate welding. The machine is designed for efficient welding of lithium batteries, supporting various materials and welding types.
The handheld downward pressure design simplifies the welding process compared to traditional bulky welding guns. Demonstration of the handheld laser welding process on a lithium battery, showing the precision and ease of use. -
5.6 Supported Materials and Welding Types
The LA-15H02 supports welding various materials with adjustable precision for both thick and thin applications. It is applicable to many industries for lithium battery pack production and maintenance.
Examples of welding applications: LiFePO4 battery studs, aluminum sheet to LiFePO4 battery, new energy vehicle batteries, Cu-Al composite sheet to aluminum electrode, copper sheet to copper electrode, and power soft pack battery. 
The machine supports various welding types including butt welding, lap welding, stitch welding, nail welding, crimping welding, T-weld, stack lap welding, and splicing edge welding. 
Detailed welding parameters for 2.5mm aluminum sheet, 1.5mm copper sheet, and 2.5mm copper aluminum composite sheet. Recommended welding thickness: 0.3-5mm.
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5.7 Marking Function
The full-featured intelligent operating system not only supports welding but also various graphics, patterns, and text editing and marking functions.
The intelligent operating system allows for precise marking of graphics, patterns, and text.
6. Maintenance
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6.1 Chiller Maintenance
Regularly check the coolant level in the integrated water chiller and replenish as needed. Ensure the chiller operates within the recommended temperature range to prevent overheating and ensure stable machine operation.
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6.2 Protective Lens Replacement
The machine comes with 20 protective lenses. Regularly inspect the protective lens for any damage or contamination. Replace the lens as necessary to maintain optimal laser performance and prevent damage to internal components.
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6.3 General Cleaning
Keep the machine clean and free from dust and debris. Use a soft, dry cloth for cleaning. Avoid using abrasive cleaners or solvents that could damage the machine's surfaces.
7. Troubleshooting
This section provides solutions to common issues. For problems not listed here, please contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No laser output | Power not connected, emergency stop engaged, fiber cable loose, protective lens dirty/damaged. | Check power supply, release emergency stop, re-seat fiber cable, inspect and clean/replace protective lens. |
| Poor weld quality | Incorrect parameters, improper focus, dirty workpiece, worn protective lens. | Adjust welding parameters, ensure correct focus, clean workpiece, replace protective lens. |
| Chiller alarm/overheating | Low coolant level, blocked air vents, ambient temperature too high. | Check and refill coolant, clear air vents, ensure operation within recommended temperature range. |
| Control panel unresponsive | Software glitch, loose connections, faulty mouse/keyboard. | Restart the machine, check cable connections for mouse/keyboard, try a different input device. |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | LY/SUNKKO |
| Model | LA-15H02 |
| Supply Voltage | AC 220V+10% 50Hz (Customizable 110V) |
| Output Power (Max.) | 1500W/2000W/3000W (selectable) |
| Input Power | 3700W |
| Laser Wavelength | 1070±10nm |
| Fibre Length | 8m (standard) |
| Working Mode | Continuous / Modulation Pulse |
| Welding Speed Range | 0-20000mm/s |
| Water Chiller | Dual temperature dual control constant temperature water tank |
| Cooling Power | 2200W |
| Working Environment Temperature Range | 15-35°C |
| Working Environment Humidity Range | 10-90% (No condensation) |
| Welding Thickness Recommendations | 0.3-5mm |
| Machine Dimension | 97cm x 54cm x 74cm |
| Net Weight | About 140kg |
| Certification | CE |
| Is Smart Device | No |
| High-concerned chemical | None |
9. User Tips
- Always wear the provided laser protective glasses to protect your eyes from laser radiation.
- Ensure proper ventilation in your work area to safely dissipate any fumes produced during welding.
- Take time to familiarize yourself with the intelligent control panel and its various settings before attempting complex welding tasks.
- Regularly inspect and clean the protective lenses to maintain optimal laser performance and prevent damage.
- For precise welding, utilize the three-axis linkage and welding height limit device to accurately position the welding head.
10. Warranty and Support
The LY Sunkko LA-15H02 Laser Welding Marking Machine comes with a 1-year warranty, ensuring quality assurance for your investment.
For technical support, troubleshooting assistance, or warranty claims, please contact your vendor or the manufacturer directly. Please have your model number and purchase date available when contacting support.
