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Ultrafast laser precise engraving method and system for leather

An ultra-fast laser and precision technology, applied in the field of leather ultra-fast laser precision engraving method and system, can solve the problems of releasing toxic gas, poor heat dissipation, leather burning, etc., and achieve fast processing time and fine and clear marking content , The effect of neat processing surface

Pending Publication Date: 2022-04-05
北京赢圣科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat dissipation effect of the current laser engraving machine is not good. If the temperature is too high, it will cause machine failure, especially when engraving patterns on leather. Once the temperature of the machine and the leather is too high, the leather will be burned, the machine will malfunction, and people will be injured.
[0005] Moreover, most of the leather laser engraving machines currently use CO2 lasers, which tend to burn the leather during processing and release toxic gases

Method used

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  • Ultrafast laser precise engraving method and system for leather
  • Ultrafast laser precise engraving method and system for leather
  • Ultrafast laser precise engraving method and system for leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Connect the laser through the data cable to a computer mounted with a laser precision engraving system software, the computer inputs the controlled laser power, the scan speed, and the repetition frequency signal to the laser, and the laser is a full solid picosecond laser. The controller receives the pulse synchronization signal of the laser, and controls the optical path, gasel, field mirror, and continuous engraving platform to complete precision engraving.

[0064] The laser wavelength is 355 ± 5 nm.

[0065] The locking emission frequency is 500 kHz; single pulse energy is 4UJ. The single pulse width is 10ps.

[0066] The laser window spot is 2mm, the divergent angle is 1.0mRAD.

[0067] The plastic circuit is a beam optical path of 5 times the magnification.

[0068] The beam transport optical path consists of a transmission optical path of the transmission distance of 500 mm.

[0069] The mirror speed is 1000 rpm.

[0070] Field glasses are F-θ field glasses, the foc...

Embodiment 2

[0078] The same is basically the same as in Example 2, and the situation is in that

[0079] The laser wavelength is 1064 ± 5 ​​nm.

[0080] The locking emission frequency is 1 kHz; single pulse energy is 500uj. The single pulse width is 1PS.

[0081] The laser window spot is 3 mm, the divergent angle is 0.5mRAD.

[0082] The plastic optical path is a retroff of a magnification of 1 times.

[0083] The beam transport optical path consists of a transmission optical path of the transmission distance 10 mm.

[0084] The mirror speed is 10,000 rpm.

[0085] Field glasses are F-θ field glasses, the focal length is 500mm.

[0086] The minimum resolution feature size of the microstructure of the precision engraving pattern is 10 um.

[0087] The leather is precisely engraved using the above laser:

[0088] Precision engraving effect image 3 Indicated.

Embodiment 3

[0090] The same is basically the same as in Example 2, and the situation is in that

[0091] The laser wavelength is 532 ± 5 nm.

[0092] The locking emission frequency is 1 MHz; single pulse energy is 10UJ. The single pulse width is 5ps.

[0093] The laser window spot is 1 mm, the divergent angle is 1.5mRAD.

[0094] The plastic optical path is an enlarged optical path of 8 times the magnification.

[0095] The beam transport optical path consists of a transmission optical path of the transmission distance of 1000 mm.

[0096] The mirror working speed is 100 rpm.

[0097] Field glasses are distant mirrors, the focal length is 50mm.

[0098] The minimum resolution characteristic size of the microstructure forming the precision engraving pattern is 0.5um.

[0099] The leather was precisely engraved using the above laser.

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Abstract

The invention provides an ultrafast laser precision engraving method and system for leather, and the method comprises the steps: 1) setting an ultrafast laser which can emit high-energy monopulse at high repetition frequency and has high monopulse energy consistency, the frequency being 1 KHz to 1 MHz, and the monopulse energy being 2-2000 uJ; 2) locking the transmitting frequency as a fixed value; (3) the laser wavelength is set to be 1064 + / -5 nm or 532 + / -5 nm; 4) inputting the ultrafast laser into a galvanometer through a shaping light path and a light beam transmission light path, and focusing the ultrafast laser on leather after passing through a field lens; and (5) precise engraving of the leather is completed under the control of the software and hardware controller. The precise engraving method of the leather is realized through an ultrafast laser vaporization material processing surface with high monopulse energy, almost no heat affected zone appears, the mark content is fine and clear, burn, hot and cold processing are avoided, and no harmful gas is released like silk-screen.

Description

Technical field [0001] The present invention relates to the field of laser precision engraving techniques, and in particular to a leather ultra-fast laser precision engraving method and system. Background technique [0002] Leather laser engraving pattern is gradually popular, the development and production of laser engraving machines is also increasingly popular. [0003] The laser engraving machine is fast, the simple operation is simple, breaking the traditional handmade and electric cutting speed, difficult to type, low efficiency and material waste. It has brought very much effectiveness for the development of the leather industry. The laser engraving machine is different from mechanical engraving machine and other traditional manual engraving methods, which has a wider range of use, the engraving accuracy is higher, the engraving is faster. Especially suitable for the large surface engraves and punch of the fur and various leather fabrics, providing a new solution for the i...

Claims

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Application Information

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IPC IPC(8): B23K26/362B23K26/402B23K26/70
Inventor 不公告发明人
Owner 北京赢圣科技有限公司
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