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Static focusing glass nanosecond laser punching system and punching method

A laser cutting and glass technology, applied in glass production, laser welding equipment, welding/welding/cutting items, etc., can solve the problems of poor quality of glass cutting holes, low cutting efficiency, difficulty in laser cutting of 6-15mm thick glass, etc. , achieve the effect of good cutting quality, high hole forming rate, and solve the difficulty of laser cutting

Pending Publication Date: 2022-05-27
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention proposes a static focusing glass nanosecond laser cutting system to solve the problems of poor glass cutting quality, low cutting efficiency, and difficult laser cutting of 6-15mm thick glass

Method used

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  • Static focusing glass nanosecond laser punching system and punching method
  • Static focusing glass nanosecond laser punching system and punching method
  • Static focusing glass nanosecond laser punching system and punching method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like Figure 2-Figure 6 As shown, this embodiment proposes a statically focused glass nanosecond laser hole cutting system, including a laser 10, a collimating beam expander 20, a reflecting mirror 30, a 2D digital galvanometer and The control board 40, the focusing field lens 50 and the dynamic focusing device 60, wherein the laser 10 is used to emit laser pulses, and the laser pulse width is less than 10ns; the collimating beam expander 20 is used to adjust the laser beam diameter and beam collimation; The mirror 30 is used to guide the laser beam emitted by the laser 10 into the digital galvanometer; the 2D digital galvanometer and the control board 40 are used to control the high-precision high-speed scanning of the laser beam in the xy plane; the focusing field mirror 50 is used for High-quality focusing and vertical incidence of laser beams within a certain width; dynamic focusing device 60 for precise positioning and movement of the focusing plane in the directio...

Embodiment 2

[0042]This embodiment proposes a statically focused glass nanosecond laser hole cutting method. Using the statically focused glass nanosecond laser hole cutting system in Example 1, the laser beam emitted by the laser 10 is collimated and expanded by a collimating beam expander 20. The beam and the mirror 30 are imported into the 2D digital galvanometer and the 2D digital galvanometer in the control board 40, and under the control of the control board and software, the scanning is repeated according to a predetermined trajectory, and the scanning laser beam is focused on the glass workpiece through the focusing field lens 50. In addition, the focusing plane remains static during the scanning process. During the scanning process of the focused laser beam, the glass material is eroded and a slit is formed, and the slit is penetrated to form a slit.

[0043] like figure 2 , image 3 As shown, when the glass with a thickness of less than 2 mm is processed by a statically focused...

Embodiment 3

[0049] When using the statically focused glass nanosecond laser cutting method to process glass with a thickness of less than 2mm, the specific steps are as follows:

[0050] First, the glass with a thickness of 2 mm or less is fixed on the processing platform, and the laser 10 is activated to emit a laser beam.

[0051] Then, the laser beam first adjusts the beam diameter and collimation through the collimating beam expander 20, and then guides the beam to the 2D digital galvanometer and the 2D digital galvanometer in the control board 40 through the high-power mirror 30, while the control board The card controls the beam to scan repeatedly according to a predetermined trajectory in the xy plane; in this embodiment, the scanning parameters include that the frequency of the laser 10 is 100-200 kHz, and the scanning speed is 3000-5000 mm / s.

[0052] Finally, the focusing field lens 50 focuses the emitted laser beam with high quality and is vertically incident on the glass workp...

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Abstract

The invention belongs to the field of laser processing, and relates to a static focusing glass nanosecond laser punching system, which comprises a laser device, and a collimation beam expander, a reflector, a 2D digital galvanometer, a focusing field lens and a dynamic focusing device which are sequentially arranged on a laser beam propagation path, the collimation beam expander is used for adjusting the diameter of the laser beam and collimating the light beam; the reflecting mirror is used for guiding the laser beam emitted by the laser into the digital galvanometer; the 2D digital galvanometer and the control board card are used for controlling high-precision and high-speed scanning of the laser beam in the xy plane; the focusing field lens is used for high-quality focusing and vertical incidence of a laser beam in a certain breadth; and the dynamic focusing device is used for accurately positioning and moving the focusing plane in the thickness direction of the glass. The system can solve the problems that the glass hole cutting quality is poor, the cutting efficiency is low, and laser cutting of the glass with the large thickness of 6-15 mm is difficult. The invention further provides a static focusing glass nanosecond laser hole cutting method.

Description

technical field [0001] The invention belongs to the field of laser processing, in particular to a statically focused glass nanosecond laser hole cutting system and a hole cutting method. Background technique [0002] Glass materials have excellent physical, chemical and optical properties and are widely used in photovoltaic, construction, automotive, medical and health, consumer electronics and other industries. In order to meet the installation or structural design of glass products, it is necessary to cut holes in the glass. At present, the widely used glass cutting methods mainly include contact type and non-contact type. The type is mainly laser cutting holes. [0003] In the Chinese utility model patent specification CN201920240201.7, a mechanical gantry structure of a glass hole cutting machine and a glass hole cutting machine are disclosed. This hole cutting method adopts a relatively traditional mechanical drilling and hole cutting scheme, and the adopted method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/06B23K26/064B23K26/0622B23K26/082B23K26/382B23K103/00
CPCB23K26/06B23K26/0643B23K26/0622B23K26/082B23K26/382B23K2103/54Y02P40/57
Inventor 张国军荣佑民黄禹梁雨峰
Owner HUAZHONG UNIV OF SCI & TECH
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