Laser processing method for making black marks on glass surface

Abstract

The invention relates to the technical field of glass laser processing, and discloses a laser processing method for making a black mark on a glass surface, comprising: performing a marking test by making a black mark line on the glass surface as a visual positioning to observe the marking effect; based on the marking test, obtaining laser data of a laser beam, obtaining a test mark line width and a preset black mark line width, obtaining a test expansion ratio, analyzing and obtaining a test deviation value and a deviation ratio based on the test expansion ratio, and performing preliminary adjustment; based on the preliminary adjustment, obtaining the black mark line width on the glass, analyzing and obtaining a processing expansion ratio, judging whether the marking effect of the laser processing is qualified by the obtained processing expansion ratio and generating different signals, obtaining the laser power and laser pulse width of a fiber laser based on the unqualified signal, analyzing and obtaining an energy density value based on the obtained processing expansion ratio, and adjusting the laser power and laser pulse width of the fiber laser based on the obtained energy density value.

Description

Technical Field

[0001] The invention relates to the technical field of glass laser processing, and in particular to a laser processing method for making black marks on a glass surface. Background Art

[0002] Glass is a brittle material. Offline handling of glass for processing requires good packaging and the speed should not be too fast, otherwise it will be easily damaged. If the glass can be processed online all the time, and no offline handling is required, the production efficiency can be greatly improved. Online processing of glass mainly involves drilling and cutting. Traditional positioning is mainly based on visual edge positioning. Since the glass produced online has large edge collapse, generally greater than 0.5mm, and poor consistency, it leads to large dimensional positioning errors during reprocessing. In addition, glass is a transparent material, and it is easy to fail to position using visual edge positioning. It is necessary to adjust parameters and capture multiple times, which affects production efficiency. For products with high dimensional position accuracy requirements, offline processing and reprocessing are required, which increases production costs. Using lasers to carve clear black lines on the glass surface as visual positioning targets greatly improves the success rate of visual capture and greatly improves positioning accuracy. The process of making targets using traditional silk-screen printing technology is relatively complicated and cannot be quickly made on the glass production line. The method of using fiber laser processing to make black marked targets has a relatively simple structure, short processing time, and good stability and consistency.

[0003] To this end, the present invention provides a laser processing method for making black marks on a glass surface. Summary of the invention

[0004] The object of the present invention is to provide a laser processing method and system for making black marks on a glass surface, so as to solve at least one of the above-mentioned problems of the prior art.

[0005] In a first aspect, a laser processing method for making a black mark on a glass surface comprises the following specific steps:

[0006] By making a black mark line on the glass surface as a visual positioning, the software sets the process parameters and then imports the marking file, performs a marking test to observe the marking effect, and moves the glass into position and performs laser marking when the effect meets the expectations. After the glass marking is completed, it moves to the next step;

[0007] Based on the marking test, the laser data of the laser beam is obtained, the test mark line width and the preset black mark line width are obtained, the test expansion ratio is calculated, the laser repetition ratio and the laser speed ratio are obtained based on the laser repetition processing times and the laser marking speed analysis, the test deviation value and deviation ratio are obtained through comprehensive analysis, and different adjustment signals are generated to make preliminary adjustments to the fiber laser;

[0008] After preliminary adjustment, the black mark line width of the laser beam processing mark on the glass is obtained, and the processing expansion ratio is analyzed to obtain the processing expansion ratio. The obtained processing expansion ratio is used to judge whether the marking effect of the laser processing is qualified and generate different signals. Based on the unqualified signal, the laser power and laser pulse width of the fiber laser are obtained. The energy density value is obtained based on the obtained processing expansion ratio. Based on the obtained energy density value, the laser power and laser pulse width of the fiber laser are analyzed and adjusted to ensure the marking effect and processing accuracy.

[0009] In a second aspect, a laser processing system for making a black mark on a glass surface includes the following specific modules:

[0010] Marking test module: Make a black crosshair or circle on the glass surface, use this mark as a visual positioning point, set the process parameters in the software, use a 20W-30W fiber laser, import the marking file, set the file size and processing position, conduct a marking test to observe the marking effect, and it is best to have the laser emit a white light on the target. After the parameter adjustment and setting are completed, the stainless steel plate returns to a safe position;

[0011] Data acquisition module: based on the marking test, obtain the laser data of the laser beam, obtain the test mark line width on the stainless steel plate before the laser beam processes the glass and the preset black mark line width processed by the laser beam, obtain the black mark line width on the glass processed by the laser beam, and obtain the laser power and laser pulse width of the fiber laser;

[0012] Data preprocessing module: Based on the acquired data, the test extension ratio is calculated, the laser repetition ratio and laser speed ratio are analyzed based on the laser repetition processing times and the laser marking speed, the test deviation value and deviation ratio are obtained by comprehensive analysis, and different adjustment signals are generated by analysis to make preliminary adjustments to the fiber laser;

[0013] Processing and marking module: After data preprocessing is completed, the assembly line glass moves into position, and the equipment automatically puts the target stainless steel plate on the stage to the focal position close to the lower surface of the glass. After it is in place, the processing is started, and the laser is focused on the target material. The high temperature evaporates and gasifies the target surface, and the material merges with the glass surface to produce a black mark. After observing that the marking test effect is in line with expectations, the glass is moved into position and stopped, and the target stainless steel plate under the platform rises to a position close to the lower surface of the glass and stops, and the laser marking is started. After marking is completed, the target stainless steel plate moves down, and the glass continues to move to the next process.

[0014] Data optimization module: After the processing and marking is completed, the processing expansion ratio is analyzed based on the acquired data. The obtained processing expansion ratio is used to judge whether the marking effect of the laser processing is qualified and generate different signals. Based on the unqualified signal, the energy density value is analyzed and obtained. Based on the obtained energy density value, the laser power and laser pulse width of the fiber laser are analyzed and adjusted to ensure the marking effect and processing accuracy.

[0015] Beneficial effects of the present invention:

[0016] 1. The test expansion ratio, laser repetition times and laser marking speed in the test process are obtained by calculation, and the test deviation value is obtained by comprehensive analysis. Different adjustment signals are generated according to different ranges of the test deviation value, and the fiber laser is preliminarily adjusted to ensure that the laser beam data adapts to different processing requirements. By comparing the deviation degree of the laser repetition times and the laser marking speed and analyzing the deviation ratio, the adjustment priority is determined to ensure the efficiency and pertinence of the adjustment process, reduce the capture positioning failure and the reduction of accuracy caused by poor marking effect, and reasonably adjust the laser data within the range of the fiber laser, so as to protect the fiber laser and improve the capture success rate and processing accuracy.

[0017] 2. By obtaining the black mark line width and comparing it with the preset value, the processing extension ratio is calculated, and the marking effect of laser processing on the glass can be accurately quantified. According to the comparison result of the processing extension ratio and the preset extension threshold, a qualified or unqualified signal is generated in real time. By calculating the energy density value and comparing it with the preset range, the marking quality problems caused by too high or too low energy density can be avoided. According to the comparison result of the energy density value with the preset range, the laser power and pulse width are adjusted in a targeted manner. When the energy density is too large, the laser power is reduced or the pulse width is increased. When the energy density is too small, the laser power is increased or the pulse width is reduced, which effectively guarantees the marking effect and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a processing step diagram of a laser processing method for making a black mark on a glass surface in Example 1 of the present invention;

[0020] Figure 2 It is a flow chart of the steps of a laser processing method for making a black mark on a glass surface in Embodiments 2 and 3 of the present invention;

[0021] Figure 3 4 is a schematic structural diagram of a laser processing system for making a black mark on a glass surface in an embodiment of the present invention;

[0022] Figure 41 is a processing schematic diagram of a laser processing method for making a black mark on a glass surface according to an embodiment of the present invention;

[0023] Figure 5 This is a black marking effect diagram of a laser processing method for making a black mark on a glass surface in an embodiment of the present invention;

[0024] Figure 6 This is a visual snapshot effect diagram of a black mark in a laser processing method for making a black mark on a glass surface according to an embodiment of the present invention;

[0025] Notes on reference numerals: 1-galvanometer, 2-field mirror, 3-glass, 4-stainless steel plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figure 1 As shown, the present invention is a laser processing method for making a black mark on a glass surface, comprising:

[0028] Step 1: Make a black mark on the glass surface as a visual positioning, set the process parameters in the software, import the marking file, conduct a marking test and observe the marking effect. If the effect meets the expectations, move the glass into place and mark it. After the glass marking is completed, move to the next step;

[0029] By making a black crosshair or circle on the glass surface and using this mark as a visual positioning point, the processing accuracy can be effectively improved to ±0.1mm, and the failure of capture can be reduced, thereby improving production efficiency.

[0030] like Figure 4 As shown, a fiber laser is used to process a black mark on the surface of glass 3. The software sets the process parameters to use a 20W-30W fiber laser with a wavelength of 1064nm, and the field lens 2 uses a field lens with a focal length of F254;

[0031] Import the marking file, set the file size and processing position, preset the marking speed to 1000mm / s, the frequency to 30KHz, and the fill line width (marking line width) to 0.03mm;

[0032] Perform a marking test to observe the marking effect. It is best if the laser emits white light on the target. After the parameter adjustment and setting are completed, the stainless steel plate 4 is returned downward to a safe position.

[0033] When the assembly line glass moves to the right position, the equipment automatically puts the target stainless steel plate 4 on the stage to the focal position close to the lower surface of the glass 3. After it is in place, the processing is started, the laser is focused on the target material, the high temperature makes the target surface evaporate and gasify, and the material fuses with the surface of the glass 3 to produce a black mark;

[0034] After observing that the marking test results meet expectations, the glass 3 is moved to a position and stopped, the target stainless steel plate 4 under the platform rises to a position close to the lower surface of the glass 3 and stops, and the laser marking is started. After the marking is completed, Figure 5 As shown in the figure, observe the black marking effect after fiber laser processing. Figure 6 As shown, observing the visual capture effect diagram of the black mark captured by the field lens 2, the target stainless steel plate 4 moves down, and the glass 3 continues to move to the next process.

[0035] The technical solution of the embodiment of the present invention is: by making a black mark line on the glass surface as a visual positioning point, the position accuracy of laser marking is improved and the processing error caused by position deviation is reduced; the visual positioning technology is used to reduce the failure of capturing and improve the continuity and efficiency of production. The process parameters preset in the software are adjusted according to actual needs to adapt to the requirements of different materials and application scenarios; by setting appropriate laser parameters and combining the application of target materials, an ideal marking effect is obtained.

[0036] Example 2: Figure 2 As shown, based on Example 1, the present invention provides a laser processing method for making a black mark on a glass surface, which specifically includes the following steps:

[0037] Step 2: Based on the marking test, the laser data of the laser beam is obtained, the test mark line width on the stainless steel plate before the laser beam is used for glass processing and the preset black mark line width for laser beam processing are obtained, and the test expansion ratio is calculated. The laser repetition ratio and laser speed ratio are obtained based on the laser repetition processing times and the laser marking speed. The test deviation value and deviation ratio are obtained through comprehensive analysis, and different adjustment signals are generated for preliminary adjustment of the fiber laser.

[0038] It should be noted that the laser data includes but is not limited to the laser emission power, laser marking speed, laser repetition times and laser pulse width of the laser beam during the test;

[0039] In some embodiments, a preset black mark line width processed by a laser beam and a test mark line width on a stainless steel plate before the laser beam performs glass processing are obtained, and a difference processing is performed between the obtained test mark line width on the stainless steel plate before the laser beam performs glass processing and the preset black mark line width processed by the laser beam to obtain a test size difference;

[0040] The obtained test size difference is processed by ratio with the preset black mark line width to obtain the test expansion ratio C s ;

[0041] Based on any black mark to be processed, obtaining the number of repetitions of the laser beam processing the black mark to obtain the laser repetition number;

[0042] Get the maximum number of repetitions of laser processing by the fiber laser, and compare the number of repetitions of laser beam processing black marks with the maximum number of repetitions of laser processing by the fiber laser to obtain the laser repetition ratio C. f ;

[0043] The processing path length of the laser beam processing a black mark is obtained, and the obtained processing path length is ratio-processed with the time consumed by the laser beam processing a black mark to obtain the laser marking speed;

[0044] Get the maximum laser marking speed of the fiber laser for laser processing, and perform ratio processing on the obtained laser marking speed and the maximum laser marking speed of the fiber laser for laser processing to obtain the laser speed ratio S d ;

[0045] Based on the obtained test expansion ratio, laser repetition ratio and laser speed ratio, a comprehensive analysis is performed and the formula is used.

[0046]

[0047] Get the test deviation value P c , where ɑ1, ɑ2 and ɑ3 are all preset correlation coefficients;

[0048] Compare the obtained test deviation value with a preset test deviation threshold, analyze the comparison result and generate different adjustment signals accordingly;

[0049] If the test deviation value is greater than or equal to the preset test deviation threshold P c1 , or the test deviation value is less than or equal to the preset test deviation threshold P c2 , it indicates that there is an obvious deviation in the laser beam parameters, which affects the marking effect of the laser beam on the glass and generates a data adjustment signal;

[0050] If the test deviation value is less than the preset test deviation threshold P c1 And the test deviation value is greater than the preset test deviation threshold P c2 , it indicates that the laser beam parameters meet the expected effects, the laser beam marking effect on the glass meets the expectations, and a normal operation signal is generated;

[0051] Based on the different adjustment signals obtained, the deviation between the laser repetition times and the laser marking speed is analyzed and compared, and the data with the largest deviation is adjusted first;

[0052] Based on the obtained laser repetition ratio and laser speed ratio, the formula

[0053]

[0054] Get the deviation ratio D total , if the deviation ratio is greater than 1, it indicates that the deviation of the laser repetition number is greater than the deviation of the laser marking speed, and the laser repetition number of the fiber laser is adjusted first;

[0055] If the deviation ratio is equal to 1, it means that the deviation degree of the laser repetition number is equal to the deviation degree of the laser marking speed, and the laser repetition number and the laser marking speed of the fiber laser are adjusted synchronously;

[0056] If the deviation ratio is less than 1, it indicates that the deviation of the laser repetition times is less than the deviation of the laser marking speed, and the laser marking speed of the fiber laser is adjusted first;

[0057] The technical solution of the embodiment of the present invention is: by calculating and obtaining the test expansion ratio, laser repetition number and laser marking speed in the test process, a comprehensive analysis is performed to obtain the test deviation value, and different adjustment signals are generated according to different ranges of the test deviation value to perform preliminary adjustments to the fiber laser, thereby ensuring that the laser beam data adapts to different processing requirements, and by comparing the degree of deviation between the laser repetition number and the laser marking speed and analyzing the deviation ratio, the priority of the adjustment is determined to ensure the efficiency and pertinence of the adjustment process, reduce the failure of capture positioning and the reduction of accuracy caused by poor marking effect, and reasonably adjust the laser data within the range that the fiber laser complies with, thereby protecting the fiber laser while improving the capture success rate and processing accuracy.

[0058] Example 3: Figure 2 As shown, based on Example 2, the present invention provides a laser processing method for making a black mark on a glass surface, which specifically includes the following steps:

[0059] Step 3: After adjusting the laser repetition times and the laser marking speed, obtain the black mark line width on the glass marked by the laser beam, analyze and obtain the processing expansion ratio, judge whether the marking effect of the laser processing is qualified by the obtained processing expansion ratio and generate different signals, obtain the laser power and laser pulse width of the fiber laser based on the unqualified signal, analyze and obtain the energy density value based on the obtained processing expansion ratio, and analyze and adjust the laser power and laser pulse width of the fiber laser based on the obtained energy density value to ensure the marking effect and processing accuracy;

[0060] It should be noted that the black mark line width refers to the line width of the black mark formed on the glass surface by laser processing and marking. The laser repetition times and laser marking speed have limited ability to adjust the marking effect of laser processed glass, and there is a situation where the marking effect cannot be effectively improved. According to the analysis of the marking effect on the glass, the laser power and laser pulse width of the fiber laser are analyzed and adjusted to ensure the marking effect and processing accuracy.

[0061] In some embodiments, the line width of the black mark on the glass processed by the laser beam is obtained, and the obtained line width of the black mark on the glass processed by the laser beam is subjected to difference processing with the preset line width of the black mark processed by the laser beam to obtain the processing size difference;

[0062] The obtained processing size difference is processed by ratio processing with the preset black mark line width to obtain the processing expansion ratio J g ;

[0063] Based on the comparison between the obtained processing extension ratio and the preset extension threshold, it is judged whether the marking effect of the laser processing is qualified;

[0064] Specifically, if the processing extension ratio is greater than the extension threshold J1 or less than the extension threshold J0, it indicates that the marking effect of the laser processed glass is unqualified, and an unqualified signal is generated;

[0065] If the processing extension ratio is less than or equal to the extension threshold J1 and greater than or equal to the extension threshold J0, it indicates that the marking effect of the laser processed glass is qualified and a qualified signal is generated;

[0066] Based on the unqualified signal, the pulse width and laser power of the fiber laser are obtained, and the spot size of the laser beam is calculated based on the Gaussian beam propagation formula;

[0067] The obtained laser power and spot size are ratio-processed to obtain the laser power density;

[0068] The obtained laser power density is processed by ratio processing with the maximum laser power density of the laser to obtain a power density ratio;

[0069] The obtained pulse width is ratioed to the maximum pulse width of the laser to obtain a pulse width ratio;

[0070] Based on the obtained power density ratio and pulse width ratio, the power density is multiplied by the pulse width ratio to obtain the energy density ratio E m ;

[0071] Based on the obtained processing extension ratio J g and energy density ratio E m , through the formula

[0072]

[0073] Get the energy density value M e , where m1 and m2 are both preset correlation coefficients;

[0074] It should be noted that the energy density value M e is the processing expansion ratio J g and energy density ratio E m Calculated, processing expansion ratio J g and energy density ratio E m The larger it is, the greater the energy density of the laser is. Too high or too low energy density will affect the laser marking effect.

[0075] Based on the comparison between the obtained energy density value and the preset range of energy density value, the laser power and laser pulse width of the fiber laser are analyzed and adjusted;

[0076] Specifically, if the energy density value is greater than the preset range of energy density values, it indicates that the laser energy density is too large and affects the marking effect, and the laser power is reduced or the laser pulse width is increased;

[0077] If the energy density value is less than the preset range of energy density values, it indicates that the laser energy density is too small to affect the marking effect, and the laser power should be increased or the laser pulse width should be reduced;

[0078] It should be noted that when the energy density is in a lower range, the energy provided is not enough to cause sufficient physical or chemical changes on the surface of the marking material or the marked object. In laser marking, when the laser energy density is low, the interaction between the laser and the material surface is weak, and the degree of evaporation or melting of the material surface is insufficient, resulting in blurred and discontinuous marking lines, and the preset marking pattern or text information cannot be clearly presented; when the energy density is too high, it will have an excessive effect on the marked part; when laser marking metal materials, excessively high energy density causes excessive ablation of the material, resulting in a large amount of sputtering, which reattaches to the area around the mark, affecting the clarity of the mark and making the edge of the mark rough and irregular;

[0079] The technical solution of the embodiment of the present invention is: by obtaining the black mark line width and comparing it with the preset value, the processing extension ratio is calculated, and the marking effect of laser processing on the glass can be accurately quantified. According to the comparison result of the processing extension ratio and the preset extension threshold, a qualified or unqualified signal is generated in real time. By calculating the energy density value and comparing it with the preset range, the marking quality problems caused by too high or too low energy density are avoided. According to the comparison result of the energy density value with the preset range, the laser power and pulse width are adjusted in a targeted manner. When the energy density is too large, the laser power is reduced or the pulse width is increased. When the energy density is too small, the laser power is increased or the pulse width is reduced, thereby effectively ensuring the marking effect and processing accuracy.

[0080] Example 4: Please refer to Figure 3 As shown, the present invention is a laser processing system for making black marks on a glass surface, comprising:

[0081] Marking test module: Make a black crosshair or circle on the glass surface, use this mark as a visual positioning point, set the process parameters in the software, use a 20W-30W fiber laser, import the marking file, set the file size and processing position, conduct a marking test to observe the marking effect, and it is best to have the laser emit a white light on the target. After the parameter adjustment and setting are completed, the stainless steel plate returns to a safe position;

[0082] Data acquisition module: based on the marking test, obtain the laser data of the laser beam, obtain the test mark line width on the stainless steel plate before the laser beam processes the glass and the preset black mark line width processed by the laser beam, obtain the black mark line width on the glass processed by the laser beam, and obtain the laser power and laser pulse width of the fiber laser;

[0083] Data preprocessing module: Based on the acquired data, the test extension ratio is calculated, the laser repetition ratio and laser speed ratio are analyzed based on the laser repetition processing times and the laser marking speed, the test deviation value and deviation ratio are obtained by comprehensive analysis, and different adjustment signals are generated by analysis to make preliminary adjustments to the fiber laser;

[0084] Processing and marking module: After data preprocessing is completed, the assembly line glass moves into position, and the equipment automatically puts the target stainless steel plate on the stage to the focal position close to the lower surface of the glass. After it is in place, the processing is started, and the laser is focused on the target material. The high temperature evaporates and gasifies the target surface, and the material merges with the glass surface to produce a black mark. After observing that the marking test effect is in line with expectations, the glass is moved into position and stopped, and the target stainless steel plate under the platform rises to a position close to the lower surface of the glass and stops, and the laser marking is started. After marking is completed, the target stainless steel plate moves down, and the glass continues to move to the next process.

[0085] Data optimization module: After the processing and marking is completed, the processing expansion ratio is analyzed based on the acquired data. The obtained processing expansion ratio is used to judge whether the marking effect of the laser processing is qualified and generate different signals. Based on the unqualified signal, the energy density value is analyzed and obtained. Based on the obtained energy density value, the laser power and laser pulse width of the fiber laser are analyzed and adjusted to ensure the marking effect and processing accuracy.

[0086] An embodiment of the present invention is described in detail above, but the content described is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention; all equivalent changes and improvements made within the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A laser processing method for making a black mark on a glass surface, characterized in that: By making a black mark line on the glass surface as a visual positioning, the software sets the process parameters and then imports the marking file, performs a marking test to observe the marking effect, and moves the glass into place and performs laser marking when the effect meets expectations. The specific operation process of the laser marking is as follows: by making a black mark line cross line or circle on the glass surface, the mark line is used as a visual positioning point, and the processing accuracy reaches ±0.1mm; the software sets the process parameters to use a 20W-30W fiber laser with a wavelength of 1064nm and a field lens with a focal length of F254; import the marking file, set The size of the image and the processing position, the marking speed is preset to 1000mm / s, the frequency is preset to 30KHz, and the fill line width, i.e. the mark line width, is preset to 0.03mm; the marking test is carried out to observe the marking effect, and it is better to emit white light when the laser hits the target material. After the parameter adjustment and setting are completed, the stainless steel plate is returned downward to a safe position; when the assembly line glass moves into position, the equipment automatically moves the target stainless steel plate to the focal position close to the lower surface of the glass, and starts processing after it is in place, the laser focuses on the target material, and the high temperature causes the surface of the target material to evaporate and gasify, and the material and the glass surface merge to produce a black mark; After observing that the marking test results meet expectations, the glass is moved to the position and stopped, and the target stainless steel plate under the platform rises to a position close to the lower surface of the glass and stops, and the laser marking is started. After the marking is completed, the target stainless steel plate moves down and the glass continues to move to the next process; after the glass marking is completed, it moves to the next process; Based on the marking test, the laser data of the laser beam is obtained, the test mark line width and the preset black mark line width are obtained, and the test expansion ratio is calculated. The specific acquisition process of the test expansion ratio is: obtaining the preset black mark line width processed by the laser beam and the test mark line width on the stainless steel plate before the laser beam performs glass processing, performing difference processing on the obtained test mark line width on the stainless steel plate before the laser beam performs glass processing and the preset black mark line width processed by the laser beam to obtain the test size difference; The obtained test size difference is processed by ratio with the preset black mark line width to obtain the test expansion ratio C s ; Based on the analysis of the laser repetition processing times and the laser marking speed, the laser repetition ratio and the laser speed ratio are obtained, and the test deviation value and deviation ratio are obtained by comprehensive analysis, and different adjustment signals are generated by analysis to make preliminary adjustments to the fiber laser; The specific acquisition process of the test deviation value is: based on the obtained test expansion ratio, laser repetition ratio and laser speed ratio, a comprehensive analysis is performed, and the formula is used to obtain the test deviation value. , get the test deviation value P c , where ɑ1, ɑ2 and ɑ3 are preset correlation coefficients, C f It represents the laser repetition ratio, S d It represents the laser speed ratio; the obtained test deviation value is compared with the preset test deviation threshold, the comparison result is analyzed and different adjustment signals are generated accordingly; After preliminary adjustment, the black mark line width of the laser beam processing mark on the glass is obtained, and the processing expansion ratio is analyzed to obtain the processing expansion ratio. The obtained processing expansion ratio is used to judge whether the marking effect of the laser processing is qualified and generate different signals. Based on the unqualified signal, the laser power and laser pulse width of the fiber laser are obtained. The energy density value is obtained based on the obtained processing expansion ratio. Based on the obtained energy density value, the laser power and laser pulse width of the fiber laser are analyzed and adjusted.

2. A laser processing method for making a black mark on a glass surface according to claim 1, characterized in that: The specific acquisition process of the laser repetition ratio is as follows: Based on any black mark to be processed, obtaining the number of repetitions of the laser beam processing the black mark to obtain the laser repetition number; Get the maximum number of repetitions of laser processing by the fiber laser, and compare the number of repetitions of laser beam processing black marks with the maximum number of repetitions of laser processing by the fiber laser to obtain the laser repetition ratio C. f .

3. The laser processing method for making a black mark on a glass surface according to claim 1, characterized in that: The specific acquisition process of the laser speed ratio is as follows: The processing path length of the laser beam processing a black mark is obtained, and the obtained processing path length is ratio-processed with the time consumed by the laser beam processing a black mark to obtain the laser marking speed; Get the maximum laser marking speed of the fiber laser for laser processing, and perform ratio processing on the obtained laser marking speed and the maximum laser marking speed of the fiber laser for laser processing to obtain the laser speed ratio S d .

4. The laser processing method for making a black mark on a glass surface according to claim 1, characterized in that: The specific process of obtaining the deviation ratio is as follows: Based on the different adjustment signals obtained, the deviation between the laser repetition times and the laser marking speed is analyzed and compared, and the data with the largest deviation is adjusted first; Based on the obtained laser repetition ratio and laser speed ratio, the formula Get the deviation ratio D total , if the deviation ratio is greater than 1, it indicates that the deviation of the laser repetition number is greater than the deviation of the laser marking speed, and the laser repetition number of the fiber laser is adjusted first; If the deviation ratio is equal to 1, it means that the deviation degree of the laser repetition number is equal to the deviation degree of the laser marking speed, and the laser repetition number and the laser marking speed of the fiber laser are adjusted synchronously; If the deviation ratio is less than 1, it indicates that the deviation of the laser repetition number is less than the deviation of the laser marking speed, and the laser marking speed of the fiber laser is adjusted preferentially.

5. The laser processing method for making a black mark on a glass surface according to claim 1, characterized in that: The specific process of obtaining the energy density value is as follows: Based on the obtained processing extension ratio J g and energy density ratio E m , through the formula Get the energy density value M e , where m1 and m2 are both preset correlation coefficients.

6. The laser processing method for making a black mark on a glass surface according to claim 5, characterized in that: The specific process of obtaining the processing expansion ratio is as follows: Obtaining the line width of the black mark on the glass processed by the laser beam, performing difference processing on the obtained line width of the black mark on the glass processed by the laser beam and the preset line width of the black mark processed by the laser beam to obtain a processing size difference; The obtained processing size difference is processed by ratio processing with the preset black mark line width to obtain the processing expansion ratio J g ; Based on the comparison between the obtained processing extension ratio and the preset extension threshold, it is determined whether the marking effect of the laser processing is qualified.

7. The laser processing method for making a black mark on a glass surface according to claim 5, characterized in that: The specific process of obtaining the energy density ratio is as follows: Based on the unqualified signal, the pulse width and laser power of the fiber laser are obtained, and the spot size of the laser beam is calculated based on the Gaussian beam propagation formula; The obtained laser power and spot size are ratio-processed to obtain the laser power density; The obtained laser power density is processed by ratio processing with the maximum laser power density of the laser to obtain a power density ratio; The obtained pulse width is ratioed to the maximum pulse width of the laser to obtain a pulse width ratio; Based on the obtained power density ratio and pulse width ratio, the power density is multiplied by the pulse width ratio to obtain the energy density ratio E m .

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