Laser coding device

Abstract

The utility model provides a laser coding device which comprises a laser module and a water-cooling control box, a water-cooling pipeline is arranged in the laser module, heat generated in the laser module is absorbed through cooling liquid in the water-cooling pipeline and is brought back to a water storage tank of the water-cooling control box, and then the laser module is coded through the effect of a refrigeration mechanism. The cooling liquid is cooled, and the cooled cooling liquid flows back to the water cooling pipeline through the second water outlet and the first water inlet and continues to absorb heat generated in the laser module, so that the effect of circularly cooling the interior of the laser module is achieved, and the cooling efficiency can be effectively improved; and the influence on the performance, the service life and the use safety of the laser coding equipment due to over-high temperature is avoided. Compared with an existing laser code printing device, the laser code printing device is compact in structure, good in heat dissipation performance and high in code printing stability and consistency.

Description

Technical Field

[0001] The utility model relates to the technical field of laser devices, in particular to a laser coding device. Background Art

[0002] Laser coding device is a device that generates laser and focuses the laser with its extremely high energy density on the surface of the product to be marked, thereby marking information on the surface of the product. It is often used to replace thermal transfer equipment to mark various information on the outer surface of the product, such as production date, batch number, barcode, pattern and other information, which is helpful for production traceability and management, and helps enterprises track the production flow of products.

[0003] However, compared with thermal transfer printers, laser coding devices involve a lot of energy conversion during operation. Due to the high efficiency of energy conversion, high temperatures are easily generated inside the laser coding device. Long-term exposure to high temperatures will affect the performance of the internal components of the laser coding device, shortening the service life of the components. In severe cases, the laser coding device may be damaged and even cause safety accidents. Therefore, it is necessary to provide a laser coding device with good heat dissipation performance. Utility Model Content

[0004] Aiming at the technical problem that the laser coding device in the prior art generates a lot of heat when working, which easily affects the performance of the device and causes damage to the device, the utility model provides a laser coding device with good heat dissipation performance.

[0005] A laser coding device, comprising a laser module and a water-cooling control box electrically connected to the laser module; the laser module comprises a shell and a laser beam expansion and reflection module arranged on one side of the shell; a receiving cavity is formed in the shell, and a plurality of water-cooling pipes are laid in the receiving cavity; a first water inlet, a first water outlet and a laser outlet are opened on the shell, and both ends of the water-cooling pipe are respectively connected to the first water inlet and the first water outlet; the receiving cavity comprises a first cavity and a second cavity, a laser generating module is arranged in the first cavity, and a first control module and a galvanometer module are arranged in the second cavity; and the first cavity, the laser beam expansion and reflection module and the second cavity are connected in sequence; the galvanometer module is opposite to the laser outlet; and an auxiliary focusing red light is also provided on the shell on one side of the laser outlet; the laser generating module and the galvanometer module are electrically connected to the water-cooling control box through the first control module; the water-cooling control box comprises a box body, and the box body is provided with a second water inlet connected to the first water outlet and a second water outlet connected to the first water inlet; a second control module, a water storage tank, a water pump and a refrigeration mechanism are provided in the box body; the water storage tank is connected to the second water inlet and the water pump respectively through a water pipe A, and the refrigeration mechanism is connected to the second water outlet and the water pump respectively through a water pipe B.

[0006] Furthermore, the galvanometer module includes a galvanometer mounting base and a galvanometer assembly arranged on the galvanometer mounting base, the galvanometer mounting base is provided with a light inlet and a light outlet, the light inlet is connected to the laser beam expansion reflection module, a focusing mirror is installed on the light outlet, and the focusing mirror is directly opposite to the laser outlet.

[0007] Furthermore, the galvanometer assembly includes an X-axis galvanometer, a Y-axis galvanometer, and a first motor and a second motor for driving the X-axis galvanometer and the Y-axis galvanometer to rotate, and the first motor and the second motor are electrically connected to the first control module respectively.

[0008] Furthermore, a laser protection cover is provided on the laser outlet; and the focusing mirror is fixed on the light outlet through a focusing mirror threaded pressing ring.

[0009] Furthermore, the refrigeration mechanism includes a cooling circulation cavity and a heat dissipation fan located on one side of the cooling circulation cavity; a plurality of cooling fins are arranged in the cooling circulation cavity, and a cooling channel is formed between the cooling fins; and the heat dissipation fan is fixed on the box body.

[0010] Furthermore, a power control line electrically connected to the first control module is provided on one side of the shell, a laser control interface is provided on the box, and the laser module is electrically connected to the laser control interface through the power control line.

[0011] Furthermore, a drain outlet connected to the tank body is provided at the bottom of the water storage tank, and a silicone plug is provided on the drain outlet.

[0012] Furthermore, the water storage tank is provided with a water level monitoring window, the water level monitoring window is made of transparent material, and the box body is provided with a transparent water level observation window used in conjunction with the water level monitoring window.

[0013] Furthermore, the laser generation module includes a pump source, a Q-switching unit and an optical unit; the Q-switching unit includes an acousto-optic Q-switcher and a Q-switching driver for modulating the acousto-optic Q-switcher, and the optical unit includes an optical shaping component, a resonant component, a laser crystal and a frequency doubling crystal component; the resonant component includes a front reflector and a rear reflector, and the front reflector is arranged corresponding to the optical shaping component; the front reflector and the rear reflector form a resonant cavity, and the laser crystal, the acousto-optic Q-switcher and the frequency doubling crystal component are arranged in sequence between the front reflector and the rear reflector.

[0014] Furthermore, the first control module includes a pump source control board, a Q drive circuit board and a galvanometer module drive circuit board; the pump source control board is electrically connected to the pump source, and the acousto-optic Q modulator is electrically connected to the Q modulator driver through the Q drive circuit board; the galvanometer module drive circuit board is electrically connected to the galvanometer module.

[0015] The beneficial effects of the utility model are as follows: the utility model provides a laser coding device, comprising a laser module and a water-cooling control box, wherein a water-cooling pipe is arranged in the laser module, and the heat generated inside the laser module is absorbed by the coolant in the water-cooling pipe, and brought back to the water storage tank of the water-cooling control box, and then the coolant is cooled down by the action of the refrigeration mechanism, and the cooled coolant flows back to the water-cooling pipe through the second water outlet and the first water inlet, and continues to absorb the heat generated inside the laser module, thereby achieving the effect of circulating cooling inside the laser module, which can effectively improve the cooling efficiency and avoid the influence of excessive temperature on the performance, life and use safety of the laser coding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the laser module provided by the utility model;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of the laser module provided by the utility model;

[0018] Figure 3 A schematic diagram of the internal structure of the laser module provided by the utility model;

[0019] Figure 4 A schematic diagram of the structure of the galvanometer module provided by the utility model;

[0020] Figure 5 A schematic diagram of the three-dimensional structure of the galvanometer module provided by the utility model;

[0021] Figure 6 A schematic diagram of the cooling cycle system provided in this embodiment;

[0022] Figure 7 A schematic diagram of the structure of the water-cooled control box provided by the utility model;

[0023] Figure 8 This is a schematic diagram of the back structure of the water-cooling control box provided by the utility model;

[0024] Fig. 9 A schematic diagram of the internal structure of the water-cooled control box provided by the utility model;

[0025] Fig.10 This is a schematic diagram of the principle of the laser generating device provided by the utility model.

[0026] Figure ID

[0027] 1. Laser module; 101. Shell; 102. Laser beam expansion and reflection module; 2. Water cooling control box; 201. Box; 3. Water cooling pipe; 4. First water inlet; 5. First water outlet; 6. Laser outlet; 7. Second water inlet; 8. Second water outlet; 9. Second control module; 10. Water storage tank; 11. Water pump 11; 12. Refrigeration mechanism; 13. Power control line; 14. First cavity; 15. Second cavity; 151. First control module; 152. Galvanometer module; 1521. Galvanometer mounting seat; 1522. Light inlet; 152 3. Light exit hole; 1524. X-axis galvanometer; 1525. Y-axis galvanometer; 1526. First motor; 1527. Second motor; 16. Auxiliary focus red light; 17. Focusing mirror; 18. Laser control interface; 19. Drain outlet; 20. Transparent water level observation window; 21. Handle; 22. Pump source; 23. Acoustic-optic Q-switch; 24. Optical shaping component; 25. Laser crystal; 26. Frequency doubling crystal component; 27. Front reflector; 28. Rear reflector; 29. ​​Control button; 30. Display screen; 31. Cooling fan; 32. Thermal baffle. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings. The described embodiments are only a part of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0029] refer to Figure 1 As shown, a laser coding device can be used to code and mark products. It includes a laser module 1 and a water-cooling control box 2 electrically connected to the laser module 1; the water-cooling control box 2 is used to control the working state of the laser module 1 and adjust the laser output parameters. In this embodiment, the shells of the water-cooling control box 2 and the laser module 1 are made of aluminum alloy, which can improve the thermal conductivity of the device, facilitate the flow of heat in the device and outflow, and have a good heat dissipation effect.

[0030] Specifically, refer to Figure 2 , Figure 3 As shown, the laser module 1 includes a shell 101 and a laser beam expansion and reflection module 102 arranged on one side of the shell 101; a receiving cavity is formed in the shell 101, and a plurality of water cooling pipes 3 are laid in the receiving cavity; a first water inlet 4, a first water outlet 5 and a laser outlet 6 are opened on the shell 101, and both ends of the water cooling pipe 3 are connected to the first water inlet 4 and the first water outlet 5 respectively. Figure 6 , Figure 8 , Fig. 9 As shown, the water-cooling control box 2 includes a box body 201, and a second water inlet 7 connected to the first water outlet 5 and a second water outlet 8 connected to the first water inlet 4 are provided on the box body 201; a second control module 9, a water storage tank 10, a water pump 11 and a refrigeration mechanism 12 are provided in the box body 201; the water storage tank 10 is connected to the second water inlet 7 and the water pump 11 respectively through a water pipe A, and the refrigeration mechanism 12 is connected to the second water outlet 8 and the water pump 11 respectively through a water pipe B.

[0031] A cooling circulation system is formed by adding a coolant (such as water) into the water tank 10, and then pumping the coolant in the water tank 10 to the refrigeration mechanism 12 through the water pump 11, and then passing through the second water outlet 8 and the first water inlet 4 in turn, flowing through the water cooling pipe 3, and finally flowing back to the water tank 10 through the first water outlet 5 and the second water inlet 7. When the laser coding device is working, the heat generated inside the laser module 1 will be absorbed by the coolant flowing through the water cooling pipe 3, and brought back to the water tank 10 of the water cooling control box 2, and then through the action of the refrigeration mechanism 12, the coolant can be cooled down, and the cooled coolant flows back to the water cooling pipe 3 through the second water outlet 8 and the first water inlet 4, and continues to absorb the heat generated inside the laser module 1, thereby achieving the effect of cooling the laser module 1, which is simple and convenient and can effectively improve the cooling efficiency.

[0032] The refrigeration mechanism 12 includes a cooling circulation cavity and a heat dissipation fan 31 located on one side of the cooling circulation cavity; a plurality of cooling fins are arranged in the cooling circulation cavity, and a cooling channel is formed between the cooling fins; the heat dissipation fan 31 is fixed on the box body 201. The coolant contacts the cooling fins through the cooling channel, which can effectively improve the cooling efficiency of the coolant and the cooling effect. At the same time, by setting the heat dissipation fan 31, the heat emitted by the cooling circulation cavity 121 can be dissipated, effectively ensuring the working efficiency of the cooling circulation cavity 121, and also can dissipate the heat generated when the water-cooled control box 2 is working.

[0033] refer to Figure 7 As shown, the water tank 10 is provided with a water level monitoring window, the water level monitoring window is made of transparent material, and the box body 201 is provided with a transparent water level observation window 20 used in conjunction with the water level monitoring window. By providing the water level monitoring window and the transparent water level observation window 20, the water level in the water tank 10 can be checked through the window, so as to add or drain water in the water tank 10. The bottom of the water tank 10 is provided with a drain port 19 connected to the box body 201, and a silicone plug is provided on the drain port 19. The provision of the drain port 19 facilitates drainage or water replacement of the water tank 10.

[0034] Preferably, the box body 201 is provided with a handle 21 and a plurality of control buttons 29 electrically connected to the second control module 9. In this embodiment, the control buttons 29 include a laser switch button and a water cooling switch button. The box body 201 is also provided with a display screen 30 for displaying temperature and other equipment operation data.

[0035] refer to Figure 3 As shown, the accommodating cavity includes a first cavity 14 and a second cavity 15, a laser generating module is provided in the first cavity 14, and a first control module 151 and a galvanometer module 152 are provided in the second cavity 15; and the first cavity 14, the laser beam expansion reflection module 102 and the second cavity 15 are connected in sequence; the galvanometer module 152 is directly opposite to the laser outlet 6; and an auxiliary focusing red light 16 is also provided on the shell 101 on one side of the laser outlet 6; the laser generating module and the galvanometer module 152 are electrically connected to the water-cooled control box 2 respectively through the first control module 151.

[0036] In this embodiment, the accommodating cavity is divided into a first cavity 14 and a second cavity 15 by a heat-conducting partition 32, and the water-cooling pipes 3 are all located in the first cavity 14; the heat generated by the galvanometer module 151 and the control module 152 during operation will enter the second cavity 15 through the heat-conducting partition 32, and be absorbed by the water-cooling pipes 3 in the second cavity 15 and the coolant therein.

[0037] By integrating the laser generating device, the galvanometer module 152 and the first control module into the accommodating cavity, and arranging the laser beam expansion reflection module 102 to cooperate with the laser generating device and the galvanometer module 152 to form a laser optical path, the laser module 1 can be made more compact and smaller in size while maintaining full functionality and structural integrity, thereby improving its ease of use.

[0038] Among them, reference Figure 4 and Figure 5 As shown, the galvanometer module 152 includes a galvanometer mounting seat 1521 and a galvanometer assembly disposed on the galvanometer mounting seat 1521. The galvanometer mounting seat 1521 is provided with a light inlet 1522 and a light outlet 1523. The light inlet 1522 is connected to the laser beam expansion reflection module 102. A focusing mirror 17 is installed on the light outlet 1523, and the focusing mirror 17 faces the laser outlet 6. The focusing mirror 17 is fixed to the light outlet 1523 by a focusing mirror threaded pressing ring; and a transparent laser protective cover is provided on the laser outlet 6.

[0039] The galvanometer assembly includes an X-axis galvanometer 1524 , a Y-axis galvanometer 1525 , and a first motor 1526 and a second motor 1527 for driving the X-axis galvanometer 1524 and the Y-axis galvanometer 1525 to rotate. The first motor 1526 and the second motor 1527 are electrically connected to the first control module 151 , respectively.

[0040] After the laser generating device generates laser, it is shot into the light entrance hole 1522 through the laser beam expansion and reflection module 102, and then shot into the X-axis galvanometer 1524, and then the X-axis galvanometer 1524 reflects the laser onto the Y-axis galvanometer 1525, and then the laser beam is shot into the focusing mirror 17 through the light exit hole 1523 through the Y-axis galvanometer 1525 for focusing, and then shot out from the laser outlet 6; at the same time, the auxiliary focusing red light 16 lights up on the shell 101 on one side of the laser outlet 6, which helps to adjust the position and focus of the laser beam so that the focused laser beam is shot toward the target position; and then the coding area of ​​the product is laser-coded. At the same time, the rotation of the X-axis galvanometer 1524 can be controlled by the first motor 1526, and the rotation of the Y-axis galvanometer 1525 can be controlled by the second motor 1527. The laser angle of the incident pulse laser beam can be adjusted according to actual needs, so that the pulse laser can process the product according to the processing parameters and graphic element trajectory set by the upper computer system, and the corresponding photolithography of the set graphic element processing trajectory can be printed on the product surface.

[0041] A power control line 13 electrically connected to the first control module 151 is also provided on one side of the shell 101 . A laser control interface 18 is provided on the box 201 . The laser module 1 is electrically connected to the laser control interface 18 via the power control line 13 .

[0042] The first control module 151 includes a pump source control board, a Q drive circuit board and a galvanometer module drive circuit board; the pump source control board is electrically connected to the pump source, the acousto-optic Q modulator 23 is electrically connected to the Q modulator driver through the Q drive circuit board; the galvanometer module drive circuit board is electrically connected to the galvanometer module. When the laser module 1 is electrically connected to the laser control interface 18 through the power control line 13, the pump source control board, the Q drive circuit board and the galvanometer module drive circuit board are all electrically connected to the second control module 9 through the power control line 13, and then the pump source 22, the Q modulator driver and the galvanometer module 152 are controlled respectively through the water-cooled control box 2.

[0043] refer to Fig.10As shown, the laser generating module includes a pump source 22, a Q-switching unit and an optical unit; the Q-switching unit includes an acousto-optic Q-switcher 23 and a Q-switching driver for modulating the acousto-optic Q-switcher 23, the optical unit includes an optical shaping component 24, a resonant component, a laser crystal 25 and a frequency doubling crystal component 26; the resonant component includes a front reflector 27 and a rear reflector 28, the front reflector 27 is arranged corresponding to the optical shaping component 24; the front reflector 27 and the rear reflector 28 form a resonant cavity, the laser crystal 25, the acousto-optic Q-switcher 23 and the frequency doubling crystal component 26 are arranged in sequence between the front reflector 27 and the rear reflector 28.

[0044] The pump light emitted by the pump source 22 is transmitted to the optical shaping component 24 through an optical fiber cable for focusing, and then injected into the laser crystal 25 in the resonant cavity to form a continuously operating laser; the Q-switched driving device converts the continuously operating laser into a pulsed laser by modulating the acousto-optic Q-switch 23, and outputs a pulsed laser of a preset wavelength through the frequency doubling crystal component 26, and then injected into the laser beam expansion and reflection module 102 from the resonant cavity through the rear reflector 28, and finally transmitted from the laser beam expansion and reflection module 102 to the galvanometer module 152 of the second cavity 15.

[0045] By converting a continuously operating laser into a pulsed laser, a laser output with higher peak power and shorter pulse width can be obtained, which is conducive to producing clear and detailed marking effects on the surface of flexible packaging. The Q-switched driver can finely adjust and control the laser, including adjusting parameters such as pulse frequency, width and intensity, so as to achieve fine control of the laser output. This fine control capability can ensure accuracy and consistency when fine marking on the product surface.

[0046] The optical shaping component 24 includes a first convex lens and a second convex lens arranged corresponding to the first convex lens. By adjusting the positions and curvatures of the first convex lens and the second convex lens, the pump light can be focused and shaped, the emission angle of the output laser can be reduced, the beam quality can be improved, and the quality and stability of the pump beam can be maintained.

[0047] The Q-switching driver is provided with a Q-switching switch, and the Q-drive circuit board controls the on-off frequency of the Q-switching driver through the Q-switching switch, thereby controlling the on-off frequency of the acousto-optic Q-switcher 23. The acousto-optic Q-switcher 23 is an optical device that can introduce weak losses in an optical system, and modulates the transmission properties of light by applying an acoustic wave signal. By controlling the on-off frequency of the acousto-optic Q-switcher 23, the Q-switching effect can be achieved, that is, the loss in the resonant cavity is adjusted, so that the continuously running laser can only pass through the output port at a specific time point (i.e., pulse) when propagating back and forth in the cavity, forming a pulsed laser output.

[0048] The frequency doubling crystal assembly 26 includes a plurality of correspondingly arranged double frequency crystals and triple frequency crystals. When the pulsed laser passes through the frequency doubling crystal assembly 26, a frequency doubling effect is generated, which can adjust and convert the wavelength of the pulsed laser and provide the required wavelength output for specific applications. In this embodiment, the frequency doubling crystal assembly 26 includes a double frequency crystal and a triple frequency crystal.

[0049] The laser beam expansion and reflection module 102 includes a first reflector, a beam expander and a second reflector (not shown in the figure) arranged in sequence. The first reflector is used to receive the pulsed laser emitted by the rear reflector 28 in the resonant cavity, and reflect it to the beam expander for beam expansion. The second reflector receives the pulsed laser after beam expansion and reflects it into the second cavity 15. The main function of the beam expander is to expand the diameter of the laser beam and reduce its divergence angle. Through the arrangement of the first reflector and the second reflector, the transmission path of the laser can be efficiently controlled to ensure that the laser can accurately irradiate the target area; through the design of the transmission path of the pulsed laser beam, the internal structure of the laser can be made more compact and the volume of the laser can be reduced.

[0050] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model, and do not limit the utility model to the specific implementation methods described. Obviously, other modifications and changes can be made according to the content of this specification. The embodiments selected and specifically described in this specification are to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can understand and use the utility model well. It is not a limitation of the utility model. Any solution after simple deformation of the utility model belongs to the protection scope of the utility model.

Claims

1. A laser coding device, comprising a laser module and a water-cooled control box electrically connected to the laser module; characterized in that: The laser module comprises a shell and a laser beam expansion and reflection module arranged on one side of the shell; a receiving cavity is formed in the shell, and a plurality of water cooling pipes are laid in the receiving cavity; a first water inlet, a first water outlet and a laser outlet are opened on the shell, and both ends of the water cooling pipe are respectively connected to the first water inlet and the first water outlet; The accommodating cavity comprises a first cavity and a second cavity, wherein a laser generating module is disposed in the first cavity, and a first control module and a galvanometer module are disposed in the second cavity; the first cavity, the laser beam expansion reflection module and the second cavity are sequentially connected; the galvanometer module faces the laser outlet; and an auxiliary focusing red light is further disposed on the shell on one side of the laser outlet; the laser generating module and the galvanometer module are electrically connected to the water-cooling control box respectively through the first control module; The water-cooling control box includes a box body, on which is provided a second water inlet connected to the first water outlet and a second water outlet connected to the first water inlet; a second control module, a water storage tank, a water pump and a refrigeration mechanism are provided in the box body; the water storage tank is connected to the second water inlet and the water pump respectively through a water pipe A, and the refrigeration mechanism is connected to the second water outlet and the water pump respectively through a water pipe B.

2. A laser coding device according to claim 1, characterized in that: The galvanometer module includes a galvanometer mounting seat and a galvanometer assembly arranged on the galvanometer mounting seat. The galvanometer mounting seat is provided with a light inlet and a light outlet. The light inlet is connected to the laser beam expansion and reflection module. A focusing mirror is installed on the light outlet, and the focusing mirror is directly opposite to the laser outlet.

3. A laser coding device according to claim 2, characterized in that: The galvanometer assembly includes an X-axis galvanometer, a Y-axis galvanometer, and a first motor and a second motor for driving the X-axis galvanometer and the Y-axis galvanometer to rotate. The first motor and the second motor are electrically connected to the first control module respectively.

4. A laser coding device according to claim 1, characterized in that: The laser beam expansion reflection module includes a first reflector, a beam expander and a second reflector which are arranged in sequence. The first reflector is used to receive the laser emitted by the laser generating module and reflect it to the beam expander for beam expansion processing, and then it is emitted into the second cavity by the second reflector.

5. The laser coding device according to claim 1, characterized in that: The refrigeration mechanism comprises a cooling circulation cavity and a heat dissipation fan located at one side of the cooling circulation cavity; a plurality of cooling fins are arranged in the cooling circulation cavity, and a cooling channel is formed between the cooling fins; the heat dissipation fan is fixed on the box body.

6. A laser coding device according to claim 1, characterized in that: A power control line electrically connected to the first control module is also provided on one side of the shell, a laser control interface is provided on the box, and the laser module is electrically connected to the laser control interface through the power control line.

7. The laser coding device according to claim 1, characterized in that: A drain port connected to the tank body is provided at the bottom of the water storage tank, and a silicone plug is provided on the drain port.

8. The laser coding device according to claim 1, characterized in that: The water storage tank is provided with a water level monitoring window, the water level monitoring window is made of transparent material, and the box body is provided with a transparent water level observation window used in conjunction with the water level monitoring window.

9. The laser coding device according to claim 1, characterized in that: The laser generating module comprises a pump source, a Q-switching unit and an optical unit; the Q-switching unit comprises an acousto-optic Q-switcher and a Q-switching driver for modulating the acousto-optic Q-switcher; the optical unit comprises an optical shaping component, a resonant component, a laser crystal and a frequency doubling crystal component; the resonant component comprises a front reflecting mirror and a rear reflecting mirror, the front reflecting mirror and the optical shaping component are arranged correspondingly; the front reflecting mirror and the rear reflecting mirror form a resonant cavity, the laser crystal, the acousto-optic Q-switcher and the frequency doubling crystal component are arranged in sequence between the front reflecting mirror and the rear reflecting mirror.

10. A laser coding device according to claim 9, characterized in that: The first control module includes a pump source control board, a Q drive circuit board and a galvanometer module drive circuit board; the pump source control board is electrically connected to the pump source, and the acousto-optic Q modulator is electrically connected to the Q modulator driver through the Q drive circuit board; The galvanometer module driving circuit board is electrically connected to the galvanometer module.

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