How do laser machines cut and engrave insulating foam?

Laser machines are highly versatile tools capable of everything from prototyping to mass production. You can start directly from your design program, which is especially crucial for rapid prototyping. Compared to complex waterjet cutting processes, laser equipment is significantly faster, more flexible, and more efficient. Laser cutting insulation foam produces clean, fused sealed edges.

A 60W laser generator is sufficient for creating a notch in insulating foam. Generally, 80W power is required for cutting foam. The specific power needed depends on the foam thickness and your requirements. Cutting efficiency: Generally, higher power allows for cutting thicker foam at faster speeds.

Before starting the laser engraving machine, verify that the power supply is functioning normally, the cooling water tank is filled with deionized water, and the circulation pump along with inlet/outlet water pipes are operational. Check that the laser's emergency stop button is not engaged and ensure no debris is present on the machine's upper surface or interior. Inspect the lenses for cleanliness; if soiled, they must be thoroughly cleaned before use. Examine the mechanical components and confirm the processing table is free of obstructions. Verify that the electromagnetic air pump is operating correctly.

If everything is in order, let's begin laser engraving and cutting the insulating foam.

Step 1: Turn on the main power switch, then activate the machine tool control power switch. After the system self-test completes, all axes will return to their reference points.

Step 2: Power on the control cabinet and start the circulating water pump. Verify water flow at the outlet.

Start the chiller unit and check the water temperature and pressure (normal pressure is 5 bar). After 3 minutes of powering on the chiller unit, the compressor will start, the fan will rotate, and cooling will begin.

Step 3: Start the air compressor and air dryer. Once the chiller reaches the set temperature (set to 21°C), turn on the laser generator's main power.

Step 4: Insert the laser power key into the switch's keyhole, turn the key clockwise to activate the laser power supply, and wait for system stabilization (approximately 30 seconds).

Step 5: Export data directly from the computer to the laser software via the data cable, or alternatively export to a USB flash drive and then download to the laser machine.

Step 6. Apply high voltage when “READY” appears on the laser panel.

Step 7. Verify material type, thickness, and dimensions before cutting. Place the insulation foam to be engraved or cut onto the work surface.

Step 8. Adjust the laser head H8 using the standard ruler. Align the sheet so its edges are parallel to the machine's X and Y axes to prevent the laser head from operating outside the sheet's boundaries.

Step 9. Move the Z-axis to the work origin. Simulate the program to ensure no soft limit alarms occur. Enter edit mode and adjust power, speed, punch time type, and thickness based on the material.

Step 10. Once all checks are normal, switch to execution mode to begin engraving and cutting the insulating foam.

After completing work, shut down the machine in the following sequence:

1. Upon completion of processing, the indicator bell will sound. Open the chamber door and remove the processed items.

2. Turn the key counterclockwise to shut off the laser. After 1 minute, turn off the circulating water pump.

3. Clean any processing residues from inside the machine.

4. Turn off the power supply to the control cabinet.

5. Turn off the air dryer and air compressor.

Considerations

1. Strictly follow the operating sequence for startup and shutdown.

2. Non-professional personnel are prohibited from operating or maintaining this machine.

3. During operation, strictly prohibit entry into the work area to ensure personnel and equipment safety. In hazardous situations, operators must remain focused and press the “Emergency Stop” button immediately.

4. Adjustments to the optical path and laser head in follow-up mode must follow the correct operating sequence to ensure personnel and equipment safety.

5. Each startup must return to the reference point, inspect and clean the focusing lens, calibrate the beam nozzle coaxiality, and activate the cutting assist gas. Bottle pressure should not exceed 1 MPa.

In summary, compared to traditional engraving and cutting methods, laser engraving and cutting of thermal insulation foam offers superior speed, efficiency, and precision without surface deformation. This makes it an excellent choice for both hobbyists and industrial mass production.