Blog de grabador láser

Lightburn:

Click the button, select this port from the COM port list, and set

961200 baud rate.

1、Use a Phillips screwdriver to unscrew the screws.

2、Disconnect the fan cable from the mainboard and remove the fan.

3、Connect the new fan's cable to the mainboard and install the fan into the laser head, making sure the intake side faces up and the exhaust side faces down.

4、Secure the fan again using a Phillips screwdriver.

Cleaning the lens window and nozzle of a laser engraver is an essential and routine maintenance task.
A dirty lens window can severely reduce laser power, causing weak or uneven engraving/cutting.
A clogged nozzle can disrupt the flow of assist air, resulting in poor cutting quality and even potential damage to the laser head due to insufficient cooling.

Below is a detailed and safe cleaning guide.

Core Principles: Safety First!

Power Off and Cool Down:
Always turn off the laser engraver and unplug the power cord before cleaning.
Wait until the laser head is completely cool, especially after recent use when it may still be very hot.

Extreme Gentleness:
Both the lens window and nozzle are delicate and fragile (especially the coating on the lens surface).
Any scratch can cause permanent damage. Handle with care and apply very light pressure during cleaning.

Use Proper Tools:
Prepare professional cleaning tools.
Avoid using paper towels or clothing that can leave fibers or cause scratches.

Part 1: Cleaning the Laser Head Lens Window

The lens window protects the internal mirrors and lenses of the laser module, and it is the most likely component to accumulate smoke and dust.

Required Tools:

Anhydrous alcohol (≥99% purity): Evaporates quickly without leaving water stains.
Avoid medical alcohol, which contains water and other additives.

Lint-free cotton swabs/lens cleaning sticks: With wooden or plastic handles wrapped in microfiber.

Air blower/camera dust blower: For removing large dust particles.

Gloves (optional but recommended): Prevent fingerprints and oil stains.

Cleaning Steps:

1. Remove the Lens Window:

Gently unscrew the lens holder (usually counterclockwise).

Place the lens on a clean, soft surface such as lint-free paper or tissue.

2. Blow Off Dust:

Use the air blower to gently blow both sides of the lens to remove surface dust and particles.
This prevents scratches during wiping.

3. Alcohol Cleaning:

Take a new lint-free swab and apply 1–2 drops of anhydrous alcohol—it should be damp, not dripping.

Start from the center of the lens and gently wipe outward in a spiral motion.
Do not wipe back and forth.

Use a new swab, moistened again with alcohol, to repeat the spiral cleaning for a deeper cleanse.

4. Dry and Inspect:

Use a clean, dry, lint-free swab to absorb any residual alcohol, again moving from center outward.

Hold the lens toward a light source (e.g., phone flashlight) and inspect from multiple angles.
Ensure there are no fingerprints, watermarks, or dust.
If contamination remains, repeat the previous steps.

5. Reinstall the Lens:

Ensure the lens holder is clean (use the air blower if needed).

Carefully reinstall the lens in its original orientation (the coated side usually faces inward—if unsure, refer to its direction before removal).

Screw the retaining ring back securely but not too tightly to avoid cracking the lens.

Part 2: Cleaning the Nozzle

The nozzle directs assist air (or oxygen/nitrogen) to the cutting point, helping to remove molten material and provide cooling.
It often becomes clogged with smoke residue or melted debris.

Required Tools:

Same as those for lens cleaning: anhydrous alcohol and lint-free swabs.

Fine needle, nozzle cleaner, or toothpick (for unclogging small holes).

A small container (for soaking the nozzle).

Cleaning Steps:

1. Remove the Nozzle:

The nozzle is usually threaded under the laser head. Unscrew it counterclockwise.

Be aware that some accumulated dust may fall out.

2. Physical Unclogging:

If the nozzle outlet is blocked by molten debris, use a fine needle or nozzle cleaner to gently clear the hole.
Be very careful not to enlarge or scratch the inner surface—this could affect airflow precision.

For double-layer nozzles, check the gaps between layers for blockage.

3. Soaking and Brushing:

For stubborn oil or residue, soak the nozzle in anhydrous alcohol for 10–15 minutes.

After soaking, use a lint-free swab or a soft brush (like an old toothbrush) to gently clean the inside and outside of the nozzle, especially around the outlet.

4. Rinse and Dry:

Rinse the nozzle again with fresh anhydrous alcohol.

Use the air blower to completely dry both the inside and outside of the nozzle, ensuring no moisture remains.
This is critical, as moisture can affect cutting performance.

5. Reinstall the Nozzle:

Once fully dry, screw the nozzle back into place.
Tighten it securely, but avoid overtightening to prevent thread damage.

Recommended Cleaning Frequency

Daily / Before Each Use:
Use an air blower to remove surface dust from the lens window and nozzle.

Weekly or Every 40 Hours of Operation:
Perform a full visual inspection and clean thoroughly if any contamination is visible.

Clean Immediately If Any of the Following Occur:

Laser power output drops noticeably (cutting depth decreases at the same power).

Engraving/cutting lines become uneven or blurry.

Sparks are unusually large or have strange colors during cutting.

A garlic-like (ozone) smell appears—this may indicate lens contamination causing beam refraction.

1. Remove the laser protective cover
Rotate the pump connection port counterclockwise to remove it.

Use an M1.5 hex wrench to loosen the nozzle screws through the small hole under the dovetail slot, then remove the nozzle (for 10W lasers).

10W

2. Unscrew the window lens counterclockwise.  

3. Install the new window lens, then reattach the nozzle and pump connection port.

First, unplug the laser module’s cable. Turn the M420 hand screw clockwise to loosen it and remove the original laser module. Then, install the new laser module onto the X-axis frame and turn the M420 hand screw counterclockwise to tighten and secure the laser module.

Replacing the X-axis or Y-axis motor is similar and not dependent on the machine model. This example uses the Ray5 40W X-axis motor.

1. Unplug the X/Y-axis motor cable. 

2. Loosen the X/Y-axis timing belt.

3. Use a 2.5 mm hex wrench to loosen the four screws and remove the X/Y-axis motor.

4. When installing the new motor, the X-axis motor connector should face left, and the Y-axis motor connector should face backward. Make sure the timing belt is properly seated on the coupling and adjusted to the correct tension, then plug in the motor cable. Motor replacement is complete.

1. Use an M5 hex wrench to loosen the screws securing the control box, then remove the control box.

2. Use an M2 hex wrench to loosen the screws on the back panel of the control box and open the control box.

3. Disconnect the cable from the display’s mainboard.

4. Use an M2.5 hex wrench to loosen the screws on the mainboard and remove the old display screen. Install the new display screen, secure it with the original screws using the M2.5 hex wrench, and reconnect the cable.

5. Close the control box, tighten the back panel screws with an M2 hex wrench, and reinstall the control box onto the machine.

6. Replacement complete.

The replacement method is similar for Ray5 20W and Ray5 40W. This example uses the Ray5 40W.

1. Use an M5 hex wrench to loosen the screws securing the control box, then remove the control box.

2. Use an M2 hex wrench to loosen the screws on the back panel of the control box and open the control box.

3. Disconnect or unscrew all cables connected to the mainboard.

4. Use an M2.5 hex wrench to loosen the screws securing the mainboard, remove the old mainboard, and install the new mainboard. Secure it with the original screws using the M2.5 hex wrench.

5. Reconnect the original cables to their corresponding ports (tighten as needed). The bundled cables have labels for correct placement.

6. Close the control box, tighten the back panel screws with an M2 hex wrench, and reinstall the control box onto the machine.

Replacement complete.

1. Use a hex wrench to loosen the screws securing the timing belt and remove the old belt.

2. Installing the new timing belt:

1）Place the timing belt along the direction of the red arrow, with the toothed side facing down.

2）Secure with flat washer screws: place a flat washer on the M5x10 screw, press the timing belt with the washer, and tighten the screw.

T-nut method: slide the T-nut onto one end of the belt, rotate the T-nut with a hex wrench, then screw in the M5x6 screw to secure one end of the belt.

3）Pull the belt taut by hand, then fix the other end using the same method as above.

4）Repeat the same steps to install the other belt on the left frame.

Note: When securing the timing belt, avoid over-tightening the screw and washer on the belt to prevent damage.

The replacement method for Ray5 20W and Ray5 40W is similar. This example uses the Ray5 40W.

1. First, disconnect the cables connected to the motors, limit switches, and laser module. Then use an M5 hex wrench to loosen the screws securing the control box and remove the control box.

2. Use an M2 hex wrench to loosen the screws on the back panel of the control box and open the control box.

3. Disconnect the combo cable from the mainboard.

4. Insert the new cable into the corresponding ports. The combo cable is labeled for easy identification.

5. Close the control box, tighten the back panel screws with an M2 hex wrench, reinstall the control box onto the machine, and reconnect the cables for the motors, limit switches, and laser module.

Replacement complete.