QILIN BWT21 Laser Welding Head User Manual

1. Introduction

This manual provides a comprehensive guide for the Qilin double pendulum fish scale laser welding system, including the V21 control box and BWT21 welding head. It covers the system's brief introduction, installation size drawings, system wiring, and human-machine interface (HMI) operation. The Qilin double swing handheld laser welding equipment is a control system developed for fiber laser welding. It features a double vibration lens motor control, offering eight swing modes: point, line, ring, oval, triangle, eight characters, semicircle, and fish scale pattern. The system incorporates high-speed digital motor swing design, circulation waterway design, fast cooling optical cavity, ergonomic design, high-end chip, and a variety of safety protection measures and other functions and features.

2. Safety Information

Please ensure that the operation is correct and safe when using the system. Observe all dangerous matters and important information indicated by the following symbols:

• Danger: Represents a serious danger. In the process of use, if the operation is improper or the use method is wrong, it may lead to serious injury or even death. Please ensure users and related personnel do not operate easily, until you ensure that the correct operation method and the correct way of use.
• Warn: Indicates that a danger exists. In the process of use, if the operation is improper or the use method is wrong, which may cause injury to the personnel. Please do not operate easily, until you ensure that the operation method is correct and the use method is correct.
• Careful: Represents a product potential risk. During use, if the use method is wrong or improper operation, the product or some parts may be damaged. Please users and related personnel do not operate easily until the operation method is correct and the use method is correct.
• Important: Represents an important information to note during the product. Please do not ignore this information, which provides effective operational help.
• Laser Radiation: This label indicates laser radiation, which will generally be affixed to the output laser products. Please be careful of laser and safety when using such equipment.

General Precautions:

1. The handheld double swing fish scale welding head contains laser, water cooler, laser welding system and laser welding head. In order to avoid interference, the argon arc welding machine and related equipment with large interference can ensure that the safe distance is kept at more than 5 meters. Ensure that the laser welding machine has independent space when conditions permit.
2. In order to reduce the leakage or static electricity of the equipment, ensure that the handheld double pendulum fish scale welding head equipment uses effective earth wire.
3. Please repeatedly confirm whether the cable joint is connected and locked normally. After locking, it can be wrapped with insulation tape.
4. Check whether the laser head and the optical fiber are locked and connected. After confirming that they are normal, the beautiful strip tape can be sealed and wound to ensure that the dust does not enter the laser head cavity.
5. Check whether there is water seepage in the cavity and many waterways in the cavity. Do not loosen the screws without professional training to prevent water droplets from entering the cavity.
6. Check whether the protective lens drawer is normal, and ensure that the sealing ring is normal and effective. When replacing the protective lens, ensure that the alcohol wipes the external stains of the laser head, at least 5 times, and ensure that the lens environment is clean and clean before the lens is replaced.
7. The laser head is so complex. To avoid short circuit, stay away from the water source and make sure that no liquid can be sprayed on the laser head.
8. Laser head refuses to use strong wind to blow and clean the laser head, and can only be wiped with alcohol and dust-free cloth.
9. The laser head is installed with a digital motor. When used, it must be put gently to prevent motor failure.
10. When the laser head is not used, please use the system gas blowing air for many times to discharge the dust, and remove the copper nozzle, use the sealing tape to seal, and use the copper nozzle to blow the air for more than 2 times before using it.
11. Continuous interruption of power supply will cause damage to the welding control system. If the external wire transmitter, 24V power supply, please provide 200W (power voltage 24V, output current is equal to or greater than 8A) above the reliable power supply!
12. The external safety lock is 24V high level, do not short connect with the aviation plug GND shell of the system cable, or do not pay attention to collide with each other when installing, otherwise the short circuit may burn the power supply or the main control board.

3. Unpacking and Inspection

The product uses shock-proof soft packaging. If the package has any external damage marks, please check the damage to the equipment and notify the carrier and the carrier of the damage in written documents.

After receiving the product, please check whether the outer package is in good condition, the product and parts after unpacking. If any damage is found, please contact the Qilin Laser immediately.

Remove all the goods from the packaging, and keep the packaging materials and wiring spare parts. When dismantling the package and removing the goods, please be careful of the goods for safety. After removing the goods, please check if the parts are complete and intact. If missing parts or parts are damaged, please contact Qilin Laser immediately. If any obvious damage to the equipment, do not install or debug the equipment.

The delivery list of the double swing fish scale laser welding system is shown in the following table. (As the product is constantly updated, the shipping list may also be adjusted.)

4. Setup

This section details the connection and wiring of the QILIN BWT21 Laser Welding Head system components.

4.1 Component Overview

The video below provides a visual guide to the components included and their initial setup.

4.2 System Wiring

The following figures show the wiring diagram of the whole system. Refer to the relevant chapters for detailed interface definitions.

Figure: Schematic diagram of the overall system wiring, showing connections between the welding gun, control box, power supply, and other peripherals.

Important: Do not connect any instructions in the control box to other lines.

4.2.1 Power Interface

The DC24V interface provides the power supply for the internal control system of the control box. The DC voltage is 24V (DC24V).

Figure: Schematic diagram of the power interface.

4.2.2 Human-Machine Interface (HMI)

The HMI interface is a DB9 black plug through which the motherboard supplies and communicates to the HMI.

Figure: HMI schematic diagram.

4.2.3 Double Swing Handheld Laser Welding Head Interface

The motherboard provides a vibrating scope interface, compatible with the common digital lens interface on the market.

4.2.4 Trigger Line

The control box provides a special security trigger signal line interface, which can provide a security guarantee for the operation.

4.2.5 Fan Interface

The control box provides a dedicated 24V fan port interface position, independent socket, not easy to insert wrong.

Figure: Schematic diagram of the fan interface.

4.2.6 Wire Feeder Control Interface

The control box provides a special communication interface for the control wire feeder, and the 24V power supply is directly connected to the power input end of the control box and can be provided 3A current.

Figure: Schematic diagram of the control interface of the wire feeder.

4.2.7 Gas Control and Air Pressure Detection Interface

The control box provides a dedicated IO interface, all output IO are using OC output can directly drive the relay, the maximum current can reach 500 mA, the wiring diagram is shown below.

Figure: Schematic diagrams of the gas control interface and air pressure detection interface.

4.2.8 Alarm Signal Interface

Laser 1 and 2 are the laser alarm signal interface, not on the green light, on the red light. Water 1 and 2 are the alarm signal interface of chiller, red light.

Figure: Schematic diagram of the alarm signal interface.

4.2.9 Alarm Lamp Interface

When the RED has voltage, the alarm light is red. When the alarm is removed, the GREEN has a voltage, and the alarm light is green.

4.2.10 Gas Pipe and Water Pipe Interface

Figure: Schematic diagram of gas pipe and water pipe interface.

• Water pipe: a water pipe in and out, forming a closed water cycle.
• Tracheal: single connector, gas output.
• DB15 interface: connect the control system and the gun head communication function.
• Samsung Air plug: Connect the conduction and trigger signal connector.

4.2.11 Double Wire Delivery Machine Installation

Figure: Installation diagram of double delivery wire, showing the wire feeding power interface.

5. Operating Instructions

5.1 HMI Function and Operation

The Qilin double pendulum fish scale laser welding operation panel adopts a 7-inch configuration capacitive touch screen, designed for dignified and generous appearance. Laser can set the relevant parameters of the laser swing head, but also control the continuous pulse light out mode, at the same time can enter the main interface of the fish scale welding system, the operation is simple and convenient, no need to edit the complex process, enter the page can be fish scale grain welding.

Figure: Main interface, schematic diagram.

• Light lock: the light switch is open to the normal light.
• Gas: When the gas opens, the gas valve port will output 24V voltage, and the gas will automatically blow without opening during welding.
• Send wire: when the wire is opened, the wire sending opportunity is in light. When the wire is closed, the wire sending machine is not controlled by the welding torch light signal. (Note: new)
• When the wire is opened, long press the torch button key for 500ms, press the torch key twice to release, and withdraw the wire for 500ms.

5.2 Fish Scale Welding Mode

The fish-scale welding mode offers specific settings for light brake, gas, wire supply, and red light, consistent with the welder interface function. Exit the fish scale welding interface and enter the standard welding interface.

Figure: Fish scale welding mode interface.

• A: Diameter of the center point of the fill mode.
• BD: The diameter of the filled circle.
• C: The spacing between the filled circle and the circle.

Click "Edit" to enter the editing main editing interface.

5.3 Laser Control

The laser control interface allows adjustment of various parameters.

Figure: Laser control settings interface.

• Power: Set the peak power of the laser at welding.
• PWM frequency: Set the frequency of the laser PWM modulation signal.
• Duty cycle: Set the pulse width of the laser PWM enabling signal.
• Laser head control:
  • Mode: Set the motor swing mode.
  • Frequency: Set the speed of the motor to swing.
  • Width: Set the width of the motor to swing.
• Out-of-light control:
  • Mode: Continuous light out mode and pulsed light mode.
  • Light time: Set light time.
  • Light output interval: Set the interval of each light output.
• Restore factory settings: After entering the editing page, restore the single page parameters.

To access the setting interface from the read-only main interface, press the gear icon.

Password: 123456

Parameter Settings:

• Gas control:
  • Advance quantity: When starting processing, delay opening can be set. When the external start button is pressed, the air blow delays for a period of time, and then the laser starts.
  • Delency: When stopping processing, the delay gas can be set. When the processing is stopped, the laser output is stopped first, After a time delay, then stop blowing.
• Proportional valve: If the equipment has a proportional valve to control the gas size, the size of the protective gas can be controlled by this function percentage.
• Start lift:
  • Slow rise time: the laser power slowly reaches the peak power after the set slow rise time.
  • Slow descent time: After the laser power is turned off, the laser energy is slowly turned off.
  • Light off delay: after the laser is turned off, there is also a full power input of 100ms to optimize the wire breaking function.
• Red light offset setting:
  • Red light offset setting: When the red light is not in the center position of the nozzle, it can be adjusted through the red light offset setting position of X and Y coordinates.
  • Start with the correction: clear up the coordinates of X and Y.
  • Clear correction: clear the previous step.
• SN and language settings:
  • System SN identification code: the factory setting of hand-held welding, used for the decryption function.
  • Firmware version: is the version currently used by the system.
  • Available period (days): available term, all functions are invalid after expiration. (Automatic reminder within 7 days)
  • Registration code: used for decryption. After receiving the registration code, enter and click confirm to decrypt.
  • Language: 23 languages, can switch languages (China, Britain, Russia, Korea, Vietnam and Japan, etc.)
• Hardware configuration:
  • Password: 123456.
  • Laser power: The laser power used can be selected to retrieve the process package of this laser.
  • Alarm point level conversion: can choose high and low level to remove the laser, chiller and air pressure alarm.
  • Graph rotation angle: can set the drawing direction of the swing pattern for different angles.
  • Optical lock timing function: After opening this function, the optical lock will automatically close for 15 minutes without operation. Closing this function requires you to manually close the optical lock.
  • Bocon default mode: you can set the default welding mode or the default scale welding mode.

5.4 Gun Head Small Display Screen

The gun head features a small display screen for quick reference of key parameters.

Figure: Gun head small display screen and related settings.

• Process: choose materials and thickness to use the process package.
• Speed: the wire feeder speed.
• Temperature: Monitor the temperature of the handheld welding torch.
• Light brake: open the light brake can be light.
• Silk / no wire: Open or close the wire.

5.5 Wire Feeder Button Description

The wire feeder has specific buttons for controlling its functions.

Figure: Description diagram of wire feeder keys.

Function Settings:

• Wire feeder speed: running speed of wire feeder (mm/s)
• Silk delay: open the laser to the setting time, and then start the wire
• Silk filling distance: the filament compensation distance after the pulldrawing stops
• Return distance: after the wire stops, the wire draws back distance
• Pulse time: the pulse receiving time of the transmitter (delivery time)
• Pulse interval: stop pulse time of the wire feeder (stop time)

6. Maintenance

Regular maintenance is crucial for the longevity and optimal performance of your QILIN BWT21 Laser Welding Head. Adhere to the following guidelines:

• Regularly check and confirm that all cable joints are connected and locked normally. Apply insulation tape after locking.
• Verify that the laser head and optical fiber are securely locked and connected. After confirmation, seal with strip tape to prevent dust from entering the laser head cavity.
• Inspect for any water seepage in the cavity or waterways. Do not loosen screws without professional training.
• Ensure the protective lens drawer and its sealing ring are normal and effective. When replacing the protective lens, clean the external stains of the laser head with alcohol wipes at least 5 times, ensuring a clean lens environment.
• Avoid spraying liquids directly onto the laser head to prevent short circuits.
• Clean the laser head only by wiping with alcohol and a dust-free cloth; do not use strong wind.
• Handle the laser head gently to prevent motor failure, as it contains a digital motor.
• When not in use, use the system gas blowing air multiple times to discharge dust. Remove the copper nozzle, seal with tape, and blow air through the copper nozzle at least twice before next use.

7. Troubleshooting

If you encounter issues with your QILIN BWT21 Laser Welding Head, consider the following common troubleshooting steps based on the precautions:

• No Power/System Malfunction: Check all power connections, especially the 15V and 24V power lines, ensuring they are securely connected and providing adequate power (24V supply should be >200W, >8A). Verify the external safety lock is correctly engaged (24V high level).
• Welding Instability/Poor Performance: Ensure all cable joints are securely connected and locked. Check the laser head and optical fiber connections. Inspect the protective lens for cleanliness and proper seating; replace if damaged or dirty.
• Water Leakage/Overheating: Check for any water seepage in the laser head cavity or waterways. Ensure the chiller is functioning correctly and its alarm signals are clear.
• Motor Issues (e.g., swing problems): Handle the laser head gently. If motor issues persist, professional service may be required.
• HMI Display Issues: Ensure the HMI display screen cable is properly connected and the terminal is fully pressed and tightened.

For issues that cannot be resolved with these steps, please refer to the 'Warranty and Support' section for contact information.

8. Specifications

The following table outlines the key parameters and specifications of the QILIN BWT21 Laser Welding Head.

Figure: Structural diagram of the welding gun.

8.1 Laser Control Parameters (2000W)

The following table provides recommended laser control parameters for 2000W welding for various materials and thicknesses. These are for reference only; for different lasers, other parameters remain unchanged, only the power modification can be set according to the formula:

• When selecting 1000W laser: P (1000W laser) = P (1500W laser) * (1000 / 1500)
• When selecting 2000W laser: P (2000W laser) = P (1500W laser) * (2000 / 1500)

9. User Tips

Based on user feedback and common inquiries, here are some tips for optimal use:

• Always wear appropriate laser safety goggles during operation to protect your eyes from laser radiation.
• Ensure proper ventilation in your workspace to dissipate any fumes generated during welding.
• Regularly check the condition of the protective lens and replace it if any scratches or damage are observed to maintain welding quality and safety.
• Familiarize yourself with the HMI settings for different materials and thicknesses to achieve the best welding results. Experiment with the fish scale welding mode for aesthetic and strong welds.
• Keep all connections tight and secure to prevent intermittent operation or signal loss.

10. Warranty and Support

Quality Assurance Description:

The warranty period of this product is 12 months, starting from the date of factory. If the product is faulty during the warranty period, it can be sent back.

Our company offers free maintenance, free of labor costs. All lens categories (e.g., collimated lens, focusing lens, mirror, cover protection lens, motor lens, etc.), appearance parts (cavity and handle, etc.) and consumables (copper nozzle, stainless steel pipe, and other easy to lose product) are not in the warranty scope.

All parts of this description, the property right of the book belongs to Guangdong Qilin Laser Technology Co., Ltd. Without the permission of the Company, any unit or individual shall not reprint, copy or spread the relevant content of this product description. If the content and information of this product will be changed without notice.

If you have any comments or suggestions on the product and instructions during use, please call for consultation.

Tel: 18018735163

Fax: 0755-27599931

Address: Room 901, Building E1, SongshanLake Intelligent Valley, Yanhe North Road No.9, Liaobu Town, Dongguan City, Guangdong China

Website: www.qilinlaser.com

Thank you for using the products of Guangdong Qilin Laser Technology Co., Ltd.!

10.1 Certifications

This product has received the following certifications:

• CE Certification Statement: This product has passed the European Union CE (Communate Europpene) safety, certification, has passed the corresponding conformity assessment procedures and the manufacturer's declaration of conformity, in accordance with the relevant EU directives.
• ROHS, the certification statement: This product has been approved by the European Union legislation on restricting the use of certain Hazardous ingredients in electronic and Electrical Equipment (Restriction of Hazardous Substances) safety certification, in accordance with the relevant environmental regulations of the European Union.
• FCC Certification statement: This product has been certified by the Federal Communications Commission (Federal Communications Commission) and complies with the relevant safety regulations of American electronic products.