A Practical Guide to Five Steps for Aligning Laser Marking Machine Optics

This article provides a five-step guide to aligning the laser beam in a laser marking machine. It includes a detailed list of the steps involved, as well as a list of the tools needed.With the combination of text and graphics, it helps users quickly master the technique of light path calibration, solving problems such as laser deviation and unclear markings, and raising the efficiency of equipment use.

Preparation for calibration.

Before you get to work, make sure you have the following tools: a cross-head screwdriver, a set of hex wrenches, a piece of white paper or acrylic test board, safety glasses, and a lint-free cleaning cloth.Don't forget to wear protective glasses, because lasers are no laughing matter.Check that the equipment is turned off--safety first!

They check to see whether the light path has shifted.

Don't rush to adjust the screws after you've opened the case.A sheet of white paper is placed on a workbench, and a low-power laser is used to fire a series of spots. The positions of the spots are observed.If the light spot is significantly off-center, or appears elliptical or divided, this indicates that the light path has been disturbed.At this point it's necessary to act like a detective and closely examine the problem: Which mirror is the culprit?

Keeping the mirrors clean.

Use a clean cloth moistened with alcohol to gently wipe the surface of the lens, always starting from the center and moving outward.Never wipe back and forth! The lenses are more fragile than you may think. A single scratch could ruin the whole lens.After cleaning, blow off the dust.

Adjusting the angle of the mirror in steps.

The first lens is adjusted to the laser beam, and then only one adjustment knob is turned at a time.Turn the knob clockwise by one quarter of a turn, then stop to test the position of the light spot. Don't turn the knob with the same force as you would a water tap.When adjusting the second mirror, you have to observe the spot in both the X and Y directions. This requires two people: one to turn the screw and one to watch the spot's movement.

The focal point of the lens.

The height of the last lens was the most critical.If the edges are blurry and the center is clear, it means the focus is wrong.At this point you have to be as patient as someone focusing a camera: make small adjustments up and down, no more than 0.5 millimeters at a time.

Verification tests after calibration.

After adjusting all the lenses, don't be in a rush to put away your tools! First you should test by marking the material. Pay particular attention to the depth of the marks in the four corners to see if they are evenly spaced.If the color of a certain area is found to have become lighter, the mirror corresponding to that area may need to be adjusted.We recommend that you test the printer 3-5 times in succession, and only after you have confirmed that the results are stable for each test can you consider the alignment to have been successful.

Tips for everyday maintenance.

He cleans the dust off the rails with a cotton swab once a week, and checks the screws holding the lenses in place once a month.In the wet season, remember to put a few packets of silica gel in the case to absorb the moisture.