The BLT441 is an intelligent cutting head designed for laser cutting applications. This manual provides comprehensive information on its product parameters, installation, and maintenance, emphasizing the importance of adhering to precautions for safe and optimal operation.
Function Description
The BLT441 cutting head is designed to precisely focus and deliver a high-power laser beam for cutting various materials. It integrates optical, mechanical, and electrical components to ensure accurate and efficient cutting. The device features a focusing unit, a collimation unit, and multiple protective lenses to maintain optical integrity. It also includes interfaces for optical fiber, cutting gas, nozzle cooling gas, and water cooling, along with electrical connections for control and power. The cutting head is equipped with LED indicators to provide real-time status updates on power, system operation, communication, and sensor readings.
Important Technical Specifications
The BLT441 cutting head boasts several key technical specifications:
- Laser Wavelength: 1030-1090nm
- Laser Power: ≤15kW
- Fiber Interface: Compatible with Q+, QD, QBH, ADD types.
- Spot Magnification: M=1.5/2.0 (100:150/100:200), allowing for flexible spot size adjustments.
- Focus Adjustment Range: ±50mm (optical ratio 1:2 100:200), providing significant flexibility in focusing.
- NA: Max.0.13 at Fc100.
- Centering Adjustment Range: ±1.5mm, enabling fine-tuning of the laser beam's position.
- Focus Acceleration: 7.5m/s², indicating rapid focusing capabilities.
- Cutting Gas Interface: Ø10, maximum 25bar (2.5Mpa). The cutting gas quality must meet ISO 8573-1:2010 standards (solid particles - class 2, water - class 4, oil - class 3) to prolong protective lens life.
- Nozzle Cooling Gas Connection: Ø6, maximum 5bar (0.5Mpa).
- Water Cooling Interface: Ø8, maximum 5bar (0.5Mpa), minimum flow 2.0l/min. Deionized/distilled water (conductivity < 10 μS/cm) is recommended. The cooling water temperature should be set according to the dew point table to prevent condensation on optical components.
- Operating Temperature: 5~55°C.
- Storage Temperature: -25~+55°C.
- Size: 404x122 mm.
- Weight: Approximately 5.5kg.
Usage Features
The BLT441 is designed for user-friendly operation and integration into laser cutting systems.
- LED Indicators: The cutting head features LED indicators for various states:
- POWER: Green for normal power, red for under-voltage alarm, unlit for no power supply/broken cable/loose interface.
- RUN: Green for normal system operation, red for abnormal motor current/mechanical component malfunction, unlit for broken cable/loose interface.
- LINK: Green for normal system communication, red for abnormal communication, unlit for broken cable/loose interface.
- SENSOR: Green for normal sensor readings, red for abnormal sensor readings, unlit for broken cable/loose interface.
- Installation: The installation process requires a clean workbench (vertical purification, ISO 5, 100 cleanliness, average wind speed ≥ 0.4m/s) and a cleaning kit (flashlight, absolute ethanol/IPA, dust-free cotton swab, dust-free cloth, compressed air dust removal tank/blower).
- Fiber Interface Connection: The laser fiber must be carefully inserted after checking its end face for pollution. The fiber optic plug should be aligned with the red dot, inserted into the unlocked port, and then the lock cap rotated until tightly locked. The interface should then be wrapped and sealed with tape (at least three times for effective sealing).
- Mounting: The cutting head is mounted on the Z-axis backplane of the machine tool using four screws (A, B, C, D), ensuring it is locked and stable.
- Ceramic Body and Nozzle Installation: The ceramic body is installed and secured with a locking ring, followed by hand-tightening the nozzle onto the ceramic body.
- Beam Centering: The XY centering knob is used to adjust the focal point to the center of the nozzle by low-power dotting. Manual alignment involves turning off the laser, placing scotch tape under the nozzle, triggering a low-power laser pulse to assess beam position, and then adjusting the X/Y centering screws.
- Electrical Interface Precautions: PWE and air plug interfaces are equipped with dust plugs for IP64 protection. This protection level is maintained when cables are well-connected but lost if dust plugs are removed. It's crucial to ensure water circuit connections are tight before removing dust plugs to prevent water ingress. Removed dust plugs should be kept and reinstalled after wiring adjustments.
- Bus and Non-Bus Systems: The manual provides wiring diagrams for both bus systems (connecting to BCS210E) and non-bus systems (connecting to BCL4500A). All wiring operations must be performed by trained professionals, and the respective control units (BCS210E or BCL4500A) must be powered off during connection.
Maintenance Features
Maintenance of the BLT441 cutting head focuses on preserving the integrity of its optical components and ensuring proper functionality.
- Cleanliness: During maintenance, it is critical to prevent dust or dirt from entering the cutting head, which could damage optical lenses. All accessories should be kept clean.
- Protective Lens Replacement: The manual details the procedure for replacing both upper and lower protective lenses. This involves opening protective doors, pulling out mirror drawers, removing pressure rings, replacing the lens, and reinserting the drawer. It is crucial to close protective doors to prevent dust entry during the process.
- Original Parts: Only original accessories should be used for replacement and maintenance, especially for optical products, to avoid potential safety hazards and ensure high quality.
- Professional Personnel: All maintenance operations should be carried out by personnel who have received appropriate training and possess professional knowledge.
- Storage: To prevent damage, the cutting head should be stored within the allowable temperature and humidity range, away from magnetic fields, and protected from collisions.
The BLT441 is a robust and precise cutting head, designed for high-performance laser cutting, with detailed instructions for safe installation, operation, and maintenance to ensure its longevity and optimal performance.
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