Laser melting and etching marking device and method based on transparent material

Abstract

The invention discloses a laser melting and etching marking device and method based on a transparent material, solving the problem the transparent material is subjected to laser marking at high transmittivity and belonging to the field of micro processing. The device comprises a laser, a computer, laser marking system software, a motion control system, a worktable, a clamp, a groove base, a heat-conducting medium and a transparent material plate, wherein the laser is connected with the computer; the worktable is arranged below the motion control system; the heat-conducting medium is paved on the groove base; and the transparent material is used as a cover plate and is fixed above the worktable by using a clamp. During marking, laser is focused on the contacted surface between the transparent material and the heat-conducting medium through the motion control system; the medium absorbs laser energy and the laser energy is converted into heat which is transmitted to the closely-contacted transparent material, so that the transparent material reaches a melting point in an extremely-short time, further the transparent material is separated from a substrate and the indention is realized. According to the laser melting and etching marking device and method disclosed by the invention, the laser melting and etching marking on the transparent material is realized, the resolution and the edge sharpness of marking patterns are improved and the roughness on the bottom surface of a microgroove reaches micro size.

Description

technical field

[0001] The invention relates to a laser melting marking device and method based on transparent materials. The method can melt and etch patterns or microgrooves with controllable depth on the surface of transparent materials, and belongs to the field of micromachining. Background technique

[0002] Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses a high-energy-density laser to locally irradiate the workpiece to make the surface material separate from the substrate or undergo a chemical reaction of color change, thereby leaving a permanent mark. Laser marking can print various characters, symbols and patterns, etc., and the character size can range from millimeters to microns, which has special significance for product anti-counterfeiting.

[0003] It has advantages that are difficult to compare with traditional methods (corrosion, EDM, mechanical scribing, printing, etc.). [00...

Examples

Embodiment 1

[0050] Example 1: Making the "Auspicious Year of the Rabbit" pattern on 3.2mm thick ultra-clear glass

[0051] Will Al 2 o 3 Spread the powder evenly in the plexiglass groove base until the entire groove is filled, and scrape off the excess powder so that the upper surface of the powder is level with the upper surface of the groove base, the depth of the groove is 1mm, and the plane size is 32mm×22mm. Cover the powder with ultra-clear glass with a thickness of 3.2mm and a plane size of 30mm×18mm, compact it evenly, and place it on the fixture to clamp it. Then put it on the workbench, and focus the laser on the plane where the ultra-clear glass contacts the heat-conducting powder. The outline size of the pattern to be marked is 30mm×20mm, and the picture pixel is 300dpi. After importing into the computer, align the marked transparent acrylic board outline with the instruction laser emitted by the laser. Set the processing parameters as laser power 20W, scanning speed 300mm...

Embodiment 2

[0052] Example 2: Making precise scribe lines on 3.2mm thick ultra-clear glass

[0053] Will Al 2 o 3 Spread the powder evenly in the plexiglass groove base until the entire groove is filled, and scrape off the excess powder so that the upper surface of the powder is level with the upper surface of the groove base, the depth of the groove is 1mm, and the plane size is 32mm×22mm. Cover the powder with ultra-clear glass with a thickness of 3.2mm and a plane size of 30mm×15mm, compact it evenly, and place it on the fixture to clamp it. Then put it on the workbench, and focus the laser on the plane where the transparent acrylic is in contact with the heat-conducting powder. Draw a horizontal straight line with a length of 20mm and a line width of 0.15mm in the control software of the computer, set the processing parameters as laser power 20W, scanning speed 300mm / s and frequency 20KHZ. Turn on the laser to scan the laser according to the set processing parameters, and the numbe...

Embodiment 3

[0054] Example 3: Making the "Auspicious Year of the Rabbit" pattern on a 2mm thick transparent acrylic

[0055] Will Al 2 o 3 Spread the powder evenly in the plexiglass groove base until the entire groove is filled, and scrape off the excess powder so that the upper surface of the powder is level with the upper surface of the groove base, the depth of the groove is 1mm, and the plane size is 32mm×22mm. Cover the powder with a transparent acrylic with a thickness of 2mm and a plane size of 30mm×20mm, compact it evenly, and place it on a jig to clamp it. Then put it on the workbench, and focus the laser on the plane where the transparent acrylic is in contact with the heat-conducting powder. The outline size of the bunny pattern to be marked is 30mm×20mm, and the picture pixel is 300dpi. After importing to the computer, the instruction laser emitted by the laser is aligned with the outline of the marked transparent acrylic plate. Set the processing parameters as laser power ...

technical field

[0001] The invention relates to a laser melting marking device and method based on transparent materials. The method can melt and etch patterns or microgrooves with controllable depth on the surface of transparent materials, and belongs to the field of micromachining. Background technique

[0002] Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses a high-energy-density laser to locally irradiate the workpiece to make the surface material separate from the substrate or undergo a chemical reaction of color change, thereby leaving a permanent mark. Laser marking can print various characters, symbols and patterns, etc., and the character size can range from millimeters to microns, which has special significance for product anti-counterfeiting.

[0003] It has advantages that are difficult to compare with traditional methods (corrosion, EDM, mechanical scribing, printing, etc.). [00...

Examples

Embodiment 1

[0050] Example 1: Making the "Auspicious Year of the Rabbit" pattern on 3.2mm thick ultra-clear glass

[0051] Will Al 2 o 3 Spread the powder evenly in the plexiglass groove base until the entire groove is filled, and scrape off the excess powder so that the upper surface of the powder is level with the upper surface of the groove base, the depth of the groove is 1mm, and the plane size is 32mm×22mm. Cover the powder with ultra-clear glass with a thickness of 3.2mm and a plane size of 30mm×18mm, compact it evenly, and place it on the fixture to clamp it. Then put it on the workbench, and focus the laser on the plane where the ultra-clear glass contacts the heat-conducting powder. The outline size of the pattern to be marked is 30mm×20mm, and the picture pixel is 300dpi. After importing into the computer, align the marked transparent acrylic board outline with the instruction laser emitted by the laser. Set the processing parameters as laser power 20W, scanning speed 300mm...

Embodiment 2

[0052] Example 2: Making precise scribe lines on 3.2mm thick ultra-clear glass

[0053] Will Al 2 o 3 Spread the powder evenly in the plexiglass groove base until the entire groove is filled, and scrape off the excess powder so that the upper surface of the powder is level with the upper surface of the groove base, the depth of the groove is 1mm, and the plane size is 32mm×22mm. Cover the powder with ultra-clear glass with a thickness of 3.2mm and a plane size of 30mm×15mm, compact it evenly, and place it on the fixture to clamp it. Then put it on the workbench, and focus the laser on the plane where the transparent acrylic is in contact with the heat-conducting powder. Draw a horizontal straight line with a length of 20mm and a line width of 0.15mm in the control software of the computer, set the processing parameters as laser power 20W, scanning speed 300mm / s and frequency 20KHZ. Turn on the laser to scan the laser according to the set processing parameters, and the numbe...

Embodiment 3

[0054] Example 3: Making the "Auspicious Year of the Rabbit" pattern on a 2mm thick transparent acrylic

[0055] Will Al 2 o 3 Spread the powder evenly in the plexiglass groove base until the entire groove is filled, and scrape off the excess powder so that the upper surface of the powder is level with the upper surface of the groove base, the depth of the groove is 1mm, and the plane size is 32mm×22mm. Cover the powder with a transparent acrylic with a thickness of 2mm and a plane size of 30mm×20mm, compact it evenly, and place it on a jig to clamp it. Then put it on the workbench, and focus the laser on the plane where the transparent acrylic is in contact with the heat-conducting powder. The outline size of the bunny pattern to be marked is 30mm×20mm, and the picture pixel is 300dpi. After importing to the computer, the instruction laser emitted by the laser is aligned with the outline of the marked transparent acrylic plate. Set the processing parameters as laser power ...

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