An ultra-narrow line bling mark system and method of non-specular metal material

Abstract

The application discloses a kind of non-mirror metal material's super-narrow line strip fancy mark system and method, wherein non-mirror metal material's super-narrow line strip fancy mark system, including marble seat table, infrared femtosecond laser, blue laser, optical path system, Z-axis movement platform, CCD camera, XY-axis movement platform and constant temperature stage;Marble seat table is formed with marble pedestal and water marble platform;Optical path system includes infrared beam expander, infrared reflector, multi-band beam mirror, first multi-band reflector, optical filter, infrared light beam monitor, second multi-band reflector third multi-band reflector, multi-band laser scanning galvanometer and multi-band focusing mirror;XY-axis movement platform is installed in the top surface front end of marble pedestal, and constant temperature stage is installed on the drive end of XY-axis movement platform.The application can be carried out to non-mirror metal material super-narrow line strip fancy mark.

Description

Technical Field

[0001] This invention relates to the field of color marking systems, and in particular to a color marking system and method for ultra-narrow lines made of non-mirror metallic materials. Background Technology

[0002] Existing iridescent technology mainly uses infrared picosecond lasers as the laser source and employs a filler line method to mark and form regular micron-level diffraction patterns to achieve an iridescent effect.

[0003] While this technology is widely used, several problems exist. First, the iridescent effect of infrared picosecond lasers is highly dependent on the surface condition of the material. Generally, the metal surface needs to achieve a mirror-like finish (Ra ≤ 0.01µm) to create the iridescent structure. Second, the iridescent microstructures of infrared picosecond lasers are at the micrometer level and must be achieved using a filler processing method. This significantly increases the number of lines to be processed, greatly limiting processing efficiency and making it unsuitable for companies requiring high-efficiency production. Third, using the filler line method requires a single line width of at least 100µm, making it difficult to effectively control the line width and limiting the precision of the processing. Summary of the Invention

[0004] The purpose of this invention is to provide an ultra-narrow line colorful marking system and method for non-mirror metal materials.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A non-mirror metallic material ultra-narrow line color marking system includes a marble base, an infrared femtosecond laser, a blue laser, an optical path system, a Z-axis motion platform, a CCD camera, an XY-axis motion platform, and a temperature-controlled stage;

[0007] The marble base is formed by a marble base and a marble platform horizontally positioned above the rear end of the top surface of the marble base.

[0008] The marble platform has a first launch position and a second launch position formed one after the other on the top surface of its middle section, and a marking area and a Z-axis motion area formed on both sides of the front end of the middle section.

[0009] The marble platform has a main body section parallel to the middle section and an outer edge section extending forward from the main body section on the top surface of the side adjacent to the marking position. The main body section has a first light receiving position opposite to the first emission position and a second light receiving position opposite to the second emission position. The outer edge section has an outward emission position, a filter position and a monitoring position formed sequentially from back to front, and the outward emission position is opposite to the top of the marking area.

[0010] The infrared femtosecond laser is located at the first emission position, and the blue laser is located at the second emission position;

[0011] The optical path system comprises an infrared beam expander and an infrared reflector arranged in the first light receiving position, a multi-band beam mirror arranged in the second light receiving position, a first multi-band reflector arranged in the light emitting position, a filter arranged in the light filtering position, an infrared beam monitor arranged in the monitoring position, a second multi-band reflector arranged at the top of the marking area, a third multi-band reflector arranged at the bottom of the marking area, a multi-band laser scanning galvanometer arranged adjacent to one side of the Z-axis movement area of the third multi-band reflector, and a multi-band focusing mirror arranged at the bottom of the multi-band laser scanning galvanometer.

[0012] The Z-axis movement platform is installed in the Z-axis movement area, and the lifting driving end of the Z-axis movement platform is connected with the multi-band laser scanning galvanometer on one side and the CCD camera on the other side.

[0013] The XY-axis movement platform is installed at the top front end of the marble base, and the constant temperature stage is installed on the driving end of the XY-axis movement platform.

[0014] As a further technical solution of the present application, the constant temperature stage is heated to 50-60 DEG C to preliminarily heat the pre-processed non-mirror metal material placed thereon.

[0015] As a further technical solution of the present application, the constant temperature stage is a red copper or brass base.

[0016] As a further technical solution of the present application, the infrared femtosecond laser has a wavelength range of 1030±3 nm, a pulse width of ≤450 fs, a frequency of 1k-400khz adjustable, and a power of ≤10w.

[0017] As a further technical solution of the present application, the infrared femtosecond laser is set to have an emission frequency of 100-200k and a power of 1.0-2.0w.

[0018] As a further technical solution of the present application, the blue laser has a wavelength range of 430-460nm and a power of ≤5w.

[0019] As a further technical solution of the present application, the blue laser is set to have an emission power of 2-4w.

[0020] As a further technical solution of the present application, the multi-band laser scanning galvanometer has a scanning speed of 200-500mm / s.

[0021] As a further technical solution of the present application, the marble base is formed with two marble supporting blocks arranged opposite to each other at the rear end of the top surface of the marble base, and the marble platform connects the top of the two marble supporting blocks.

[0022] In addition, the present application is necessary to provide a kind of non-mirror metal material's super-narrow line strip dazzle mark system's super-narrow line strip dazzle mark method.

[0023] A kind of non-mirror metal material's super-narrow line strip dazzle mark system's super-narrow line strip dazzle mark method, comprising the following steps: first, constant temperature stage is heated to preset temperature, and the non-mirror metal material of pre-processing is placed in constant temperature stage and carries out preliminary preheating;Second, system control Z axis movement platform, the focus of multi-band focusing mirror is adjusted to workpiece surface+0.2mm~+0.3mm;Third, with CCD camera finds workpiece feature point, determines the processing position of pattern;Fourth, set infrared femtosecond laser light frequency and power, set blue laser light power and set multi-band laser scanning galvanometer scanning speed;Fifth, system control multi-band laser scanning galvanometer swing and infrared femtosecond laser, blue laser light is emitted simultaneously, and blue light is emitted by blue laser, reaches workpiece surface by multi-band beam combiner, first multi-band mirror, second multi-band mirror, third multi-band mirror, multi-band laser scanning galvanometer and multi-band focusing field mirror, realizes secondary preheating in workpiece processing process;Infrared femtosecond laser emits femtosecond level pulse width infrared laser, reaches workpiece surface by infrared beam expander, infrared mirror, multi-band beam combiner, first multi-band mirror, second multi-band mirror, third multi-band mirror, multi-band laser scanning galvanometer and multi-band focusing field mirror, and dazzle mark is carried out on single line pattern on non-mirror metal workpiece surface according to planning path.

[0024] Compared with prior art, the present application has the beneficial effects that: the present application proposes a kind of non-mirror metal material's super-narrow line strip dazzle mark system and method, by the cooperation between marble seat, infrared femtosecond laser, blue laser, optical path system, Z axis movement platform, CCD camera, XY axis movement platform and constant temperature stage, with specific constant temperature stage temperature, realize the preliminary preheating of non-mirror metal material, can reduce the power output of blue laser in processing process, improve the energy utilization rate of system;And by adjusting the output power and scanning speed of blue laser, the secondary preheating temperature in processing process is controlled and stabilized, to ensure that the regular nanometer diffraction pattern of the internal metal of narrow line strip is generated in the process of infrared femtosecond laser processing;And by adjusting the defocusing amount, laser frequency, laser power and scanning speed of infrared femtosecond laser, the function of fast marking of super-narrow line width within 20um is achieved, and regular nanometer diffraction pattern is generated to achieve the dazzle mark effect of non-mirror metal surface. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the schematic diagram of non-mirror metal material's super-narrow line strip dazzle mark system.

[0026] Figure 2 It is the partial view of non-mirror metal material's super-narrow line strip dazzle mark system.

[0027] Figure 3 The principle diagram of the super-narrow line dazzling color marking system of non-specular metal material. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the protection scope of the present application.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3 , a super-narrow line dazzling color marking system of non-specular metal material, comprising a marble base 10, an infrared femtosecond laser 20, a blue laser 30, an optical path system 40, a Z-axis motion platform 50, a CCD camera 60, an XY-axis motion platform 70 and a constant temperature stage 80;

[0030] The marble base 10 is formed with a marble base 11, two marble support blocks 12 oppositely arranged on the top surface of the rear end of the marble base 11, and a marble platform 13 horizontally arranged above the top surface of the rear end of the marble base 11 and connecting the top of the two marble support blocks 12;

[0031] The marble platform 13 is formed with a first emission site 131 and a second emission site 132 on the top surface of the middle section from back to front, and a marking area 133 and a Z-axis motion area 134 on the front end of the middle section;

[0032] The top surface of the marble platform 13 adjacent to the marking site is provided with a main section 101 parallel to the middle section and an outer edge section 102 extending forward from the main section 101, the main section 101 is formed with a first light receiving site 91 opposite to the first emission site 131 and a second light receiving site 92 opposite to the second emission site 132, the outer edge section 102 is sequentially formed with an outer emission site 93, a light filtering site 94 and a monitoring site 95 from back to front, and the outer emission site 93 is opposite to the top of the marking area 133;

[0033] The infrared femtosecond laser 20 is arranged at the first emission site 131, and the blue laser 30 is arranged at the second emission site 132;

[0034] The light path system 40 comprises an infrared beam expander 41 and an infrared reflector 42 arranged in the first light receiving position 91, a multi-band beam mirror 43 arranged in the second light receiving position 92, a first multi-band reflector 44 arranged in the outer emitting position 93, a filter 45 arranged in the light filtering position 94, an infrared beam monitor 46 arranged in the monitoring position 95, a second multi-band reflector 47 arranged at the top of the marking area 133, a third multi-band reflector 48 arranged at the bottom of the marking area 133, a multi-band laser scanning galvanometer 49 arranged adjacent to one side of the Z-axis movement area 134 of the third multi-band reflector 48, and a multi-band focusing mirror 491 arranged at the bottom of the multi-band laser scanning galvanometer 49.

[0035] The Z-axis movement platform 50 is installed in the Z-axis movement area 134, and the lifting driving end of the Z-axis movement platform 50 is connected with the multi-band laser scanning galvanometer 49 on one side and the CCD camera 60 on the other side;

[0036] The XY-axis movement platform 70 is installed at the top front end of the marble base 11, and the constant temperature stage 80 is installed on the driving end of the XY-axis movement platform 70. After the non-specular metal material for pre-processing is placed on the constant temperature stage 80 for preliminary preheating, the system controls the Z-axis movement platform 50 to adjust the focal point of the multi-band focusing mirror 491 to +0.2mm to +0.3mm above the workpiece surface, and then the CCD camera 60 finds the characteristic points of the workpiece to determine the processing position of the pattern. After that, the system controls the multi-band laser scanning galvanometer 49 to swing and the infrared femtosecond laser 20 and the blue laser 30 to emit light at the same time, so as to mark the single-line pattern on the non-specular metal workpiece surface according to the planned path.

[0037] Further, in the embodiment, the constant temperature stage 80 is heated to 50-60℃ during preliminary preheating to improve the absorption rate of blue laser.

[0038] Further, in the embodiment, the constant temperature stage 80 is made of red copper or brass.

[0039] Further, in the embodiment, the infrared femtosecond laser 20 has a wavelength range of 1030±3nm, a pulse width of ≤450fs, a frequency of 1k-400khz, and a power of ≤10w. Specifically, the infrared femtosecond laser 20 is set to have an emission frequency of 100-200k and an emission power of 1.0-2.0w.

[0040] Further, in the embodiment, the blue laser 30 has a wavelength range of 430-460nm and a power of ≤5w. Specifically, the blue laser 30 is set to have an emission power of 2-4w.

[0041] Further, in the embodiment, the multi-band laser scanning galvanometer 49 has a scanning speed of 200-500mm / s.

[0042] It can be understood that a super-narrow line color mark method of a super-narrow line color mark system of a non-specular metal material comprises the following steps: first, the constant temperature stage 80 is warmed to a preset temperature, and the pre-processed non-specular metal material is placed on the constant temperature stage 80 for preliminary preheating; second, the system controls the Z-axis movement platform 50 to adjust the focal point of the multi-band focusing mirror 491 to +0.2mm~+0.3mm of the workpiece surface; third, the CCD camera 60 is used to find the characteristic points of the workpiece to determine the processing position of the pattern; fourth, the output frequency and power of the infrared femtosecond laser 20 are set, the output power of the blue laser 30 is set, and the scanning speed of the multi-band laser scanning galvanometer 49 is set; fifth, the system controls the multi-band laser scanning galvanometer 49 to swing and the infrared femtosecond laser 20 and the blue laser 30 to emit light at the same time, the blue laser 30 emits blue light which reaches the workpiece surface through the multi-band beam combiner, the first multi-band mirror 44, the second multi-band mirror 47, the third multi-band mirror 48, the multi-band laser scanning galvanometer 49 and the multi-band focusing field mirror, realizing secondary preheating in the workpiece processing process; the infrared femtosecond laser 20 emits infrared laser with a femtosecond pulse width which reaches the workpiece surface through the infrared beam expander 41, the infrared mirror 42, the multi-band beam combiner, the first multi-band mirror 44, the second multi-band mirror 47, the third multi-band mirror 48, the multi-band laser scanning galvanometer 49 and the multi-band focusing field mirror, and performs color mark on the single line pattern on the non-specular metal workpiece surface according to the planned path. In this way, the super-narrow line color mark of the non-specular metal workpiece is completed.

[0043] In summary, the super-narrow line color mark system and method of the non-specular metal material realizes preliminary preheating of the non-specular metal material through cooperation between the marble base 10, the infrared femtosecond laser 20, the blue laser 30, the optical path system 40, the Z-axis movement platform 50, the CCD camera 60, the XY-axis movement platform 70 and the constant temperature stage 80 at a specific constant temperature stage 80 temperature, which can reduce the power output of the blue laser 30 in the processing process, improve the energy utilization rate of the system, adjust the output power and scanning speed of the blue laser 30 to control and stabilize the secondary preheating temperature in the processing process, ensure the stable induction of the regular nanometer diffraction lines in the narrow line inside the metal in the infrared femtosecond laser processing process, and achieve the effect of super-narrow line width within 20um fast marking and regular nanometer diffraction lines on the non-specular metal surface color mark.

[0044] As long as the idea of the present application is not violated, any combination of various different embodiments of the present application should be considered as the disclosed content of the present application; within the technical concept of the present application, any combination of various simple modifications and different embodiments of the technical solutions without violating the idea of the present application should be within the protection scope of the present application.

Claims

1. A non-mirror metallic material ultra-narrow line iridescent marking system, characterized in that: It includes a marble stage (10), an infrared femtosecond laser (20), a blue laser (30), an optical path system (40), a Z-axis motion platform (50), a CCD camera (60), an XY-axis motion platform (70), and a temperature-controlled stage (80). The marble base (10) is formed with a marble base (11) and a marble platform (13) horizontally disposed above the rear end of the top surface of the marble base (11). The marble platform (13) has a first launch position (131) and a second launch position (132) formed on the top surface of its middle section, and a marking area (133) and a Z-axis motion area (134) formed on both sides of the front end of the middle section. The marble platform (13) has a main body section (101) on the top surface of the side adjacent to the marking position, which is parallel to the middle section, and an outer edge section (102) extending forward from the main body section (101). The main body section (101) has a first light-receiving position (91) opposite to the first emission position (131) and a second light-receiving position (92) opposite to the second emission position (132). The outer edge section (102) has an outward emission position (93), a filter position (94) and a monitoring position (95) arranged sequentially from back to front. The outward emission position (93) is opposite to the top of the marking area (133). The infrared femtosecond laser (20) is located at the first emission position (131), and the blue laser (30) is located at the second emission position (132). The optical path system (40) includes an infrared beam expander (41) and an infrared reflector (42) disposed at the first light receiving position (91), an infrared beam expander (43) disposed at the second light receiving position (92), a first multi-band reflector (44) disposed at the outward position (93), a filter (45) disposed at the filter position (94), an infrared beam monitor (46) disposed at the monitoring position (95), a second multi-band reflector (47) disposed at the top of the marking area (133), a third multi-band reflector (48) disposed at the bottom of the marking area (133), a multi-band laser scanning galvanometer (49) disposed on the side of the third multi-band reflector (48) adjacent to the Z-axis motion area (134), and a multi-band focusing lens (491) disposed at the bottom of the multi-band laser scanning galvanometer (49). The Z-axis motion platform (50) is installed in the Z-axis motion area (134). The lifting drive end of the Z-axis motion platform (50) is connected to the multi-band laser scanning galvanometer (49) on one side and the CCD camera (60) on the other side. The XY-axis motion platform (70) is installed on the front end of the top of the marble base (11), and the constant temperature stage (80) is installed on the drive end of the XY-axis motion platform (70).

2. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The constant temperature stage (80) is heated to 50~60℃ to preheat the pre-processed non-mirror metal material placed on it.

3. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The constant temperature stage (80) is made of copper or brass.

4. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The infrared femtosecond laser (20) has a wavelength range of 1030±3nm, a pulse width of ≤450fs, an adjustable frequency of 1khz~400khz, and a power of ≤10w.

5. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The infrared femtosecond laser (20) is set with an output frequency of 100 k ~ 200 k and a power of 1.0 ~ 2.0 W.

6. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The blue laser (30) has a wavelength range of 430~460nm and a power of ≤5W.

7. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The output power of the blue laser (30) is set to 2~4W.

8. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The scanning speed of the multi-band laser scanning galvanometer (49) is 200~500mm / s.

9. The ultra-narrow line iridescent marking system for non-mirror metallic materials according to claim 1, characterized in that: The marble base (10) has two marble support blocks (12) that are erected on opposite sides of the rear end of the top surface of the marble base (11), and the marble platform (13) connects the top of the two marble support blocks (12).

10. A method for marking ultra-narrow lines with iridescent colors using an ultra-narrow line iridescent marking system for non-mirror metallic materials according to any one of claims 1-9, characterized in that: Includes the following steps: First, the constant temperature stage (80) is heated to the preset temperature, and the pre-processed non-mirror metal material is placed on the constant temperature stage (80) for preliminary preheating; Second, the system controls the Z-axis motion platform (50) to adjust the focus of the multi-band focusing lens (491) to +0.2mm~+0.3mm on the workpiece surface; Third, the CCD camera (60) is used to find the feature points of the workpiece and determine the processing position of the pattern; Fourth, the output frequency and power of the infrared femtosecond laser (20), the output power of the blue laser (30), and the scanning speed of the multi-band laser scanning galvanometer (49) are set; Fifth, the system controls the multi-band laser scanning galvanometer (49) to swing and emit light simultaneously with the infrared femtosecond laser (20) and the blue laser (30), and the blue laser... The laser (30) emits blue light, which passes through a multi-band beam combiner, a first multi-band reflector (44), a second multi-band reflector (47), a third multi-band reflector (48), a multi-band laser scanning galvanometer (49), and a multi-band focusing field mirror to reach the surface of the workpiece, thereby achieving secondary preheating during the workpiece processing. The infrared femtosecond laser (20) emits infrared laser with a femtosecond pulse width, which passes through an infrared beam expander (41), an infrared reflector (42), a multi-band beam mirror (43), a first multi-band reflector (44), a second multi-band reflector (47), a third multi-band reflector (48), a multi-band laser scanning galvanometer (49), and a multi-band focusing field mirror to reach the surface of the workpiece, thereby marking a single-line pattern on the surface of the non-mirror metal workpiece according to the planned path.

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