A laser scribe apparatus and method

Abstract

This invention relates to the field of ventilation duct connection, and discloses a laser marking device and method. The laser marking device includes a guide seat and a duct. A battery is installed on the inner wall of the guide seat. Limiting structures are evenly installed on one side of the guide seat. A T-shaped movable seat is symmetrically slidably connected to the top of the guide seat. An adjustment structure is rotatably connected to the opposite side of the T-shaped movable seat. A connecting block is fixedly connected to one side of the adjustment structure. A motor is fixedly installed at one end of the connecting block. A rack shaft is fixedly connected to the output end of the motor. A laser positioning transmitter is installed at one end of the rack shaft. The limiting structure facilitates the movement of the guide seat and also securely limits the guide seat to the duct. The adjustment structure allows for slight adjustment of the marking area when the guide seat is inconvenient to move. The motor drives the rack shaft to rotate according to the marking requirements, achieving automated and precise marking of the intersection line.

Description

Technical Field

[0001] This invention relates to the field of ventilation duct connection technology, specifically a laser marking device and method. Background Technology

[0002] Ventilation systems, as a fundamental infrastructure in building engineering and industrial production, undertake crucial functions such as air circulation, temperature and humidity regulation, and pollutant emission. The quality of their duct installation directly affects the system's sealing performance, airflow stability, and operational efficiency. In the installation and construction of ventilation ducts, the connection between branch pipes and main pipes is a core process. The key to connection quality lies in accurately determining the opening position and intersection shape on the main pipe. The opening position determines the coaxiality and angular accuracy of the branch pipe and main pipe, while the intersection shape determines the tightness and sealing of the connection. These two factors together constitute the technical indicators for duct connection and installation, directly affecting the energy consumption and service life of the ventilation system.

[0003] In existing technologies, when determining the location of duct connection openings, long straight profiles such as round steel and angle steel are usually placed on the installed branch pipes and extended to the main pipe to determine the opening location. For the shape of the opening, the intersection line shape is theoretically determined by the unfolding diagram method, but due to the need for complex geometric calculations, it is difficult to implement on site. In practice, it often relies on experience to make trial cuts, mark four points, hand-draw a rough shape, and repeatedly revise it, which results in low construction efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser marking device and method that solves the problem of low construction efficiency in existing ductwork connections.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser marking device and method, comprising a guide seat and a duct, wherein a battery is installed on the inner wall of the guide seat, a limiting structure is uniformly installed on one side of the guide seat, a T-shaped movable seat is symmetrically slidably connected to the top of the guide seat, an adjustment structure is rotatably connected to the opposite side of the T-shaped movable seat, a connecting block is fixedly connected to one side of the adjustment structure, a motor is fixedly installed at one end of the connecting block, a rack shaft is fixedly connected to the output end of the motor, a laser positioning transmitter is installed at one end of the rack shaft, a movable structure is provided on one side of the rack shaft, a mounting support is fixedly connected to one side of the movable structure, a laser positioning transmitter is installed at one end of the mounting support, a laser marking transmitter is installed on one side of the mounting support, and a distance sensor is installed on the other side of the mounting support.

[0006] By adopting the above technical solution, the limiting structure facilitates the movement of the guide seat while also firmly fixing it on the duct. The adjustment structure allows for slight adjustment of the marking area when the guide seat is difficult to move, thus enhancing the marking range. Furthermore, the dual positioning collaboration between laser positioning transmitter one and laser positioning transmitter two calibrates the reference position of the opening on the main pipe. Motor one drives the rack shaft to rotate according to the marking requirements, and the moving structure moves laser positioning transmitter two, laser marking transmitter, and distance sensor on the mounting bracket along the rack shaft, achieving automated and precise marking of the intersection line. This solves the problem of low construction efficiency in existing duct connections.

[0007] Preferably, the limiting structure includes an electric actuator two and a rotating wheel. One side of the electric actuator two is mounted on one side of the guide seat. The output end of the electric actuator two is hinged to an electromagnet fixing seat. One side of the electromagnet fixing seat is rotatably connected to a mounting block.

[0008] Preferably, one side of the mounting block is fixedly connected to the inner wall of the guide seat, an electromagnet is installed at the bottom of the electromagnet fixing seat, and a pressure block is fixedly connected to the other side of the electromagnet fixing seat.

[0009] Preferably, a second rotating shaft is fixedly connected to the middle of the rotating wheel, one end of the second rotating shaft is rotatably connected to the inside of the guide seat, a third gear is fixedly connected to one side of the second rotating shaft, a mounting seat is rotatably connected to the outer wall of the second rotating shaft, one side of the mounting seat is fixedly connected to the inner wall of the guide seat, and a second T-shaped slider is slidably connected to the inner wall of the mounting seat, the second T-shaped slider being located below the pressure block.

[0010] Preferably, a spring is symmetrically fixedly connected to the top of the T-shaped slider two, one end of the spring is fixedly connected to the inner wall of the mounting base, and a rack two is fixedly connected to the bottom of the T-shaped slider two, the tooth end of the rack two can mesh with the tooth end of the gear three.

[0011] Preferably, the adjustment structure includes a rotating shaft and an electric actuator. The outer wall of the rotating shaft is rotatably connected to one side of the T-shaped moving seat. A motor is fixedly installed on one side of one of the T-shaped moving seats. The output end of the motor is fixedly connected to one end of the rotating shaft. The middle part of the rotating shaft is fixedly connected to one side of the connecting block. A gear is fixedly connected to the outer wall of the rotating shaft.

[0012] Preferably, one side of the electric actuator is fixedly installed on one side of one of the T-shaped movable seats, the output end of the electric actuator is fixedly connected to the T-shaped slider, the outer wall of the T-shaped slider is slidably connected to the rack, the bottom of the rack is slidably connected to the top of the guide seat, and the tooth end of the rack can mesh with the tooth end of the gear.

[0013] Preferably, the movable structure includes a movable support, the inner wall of which is slidably connected to the outer wall of the rack shaft, a second motor is fixedly installed on one side of the movable support, a first gear is fixedly connected to the output end of the second motor, and one end of the first gear is rotatably connected inside the movable support.

[0014] Preferably, the tooth end of the first gear is meshed with the tooth end of the rack shaft, and a support rod is fixedly connected to one end of the movable support, and one end of the support rod is fixedly connected to one side of the mounting support.

[0015] A laser scribing method, applied to the aforementioned laser scribing device, includes the following steps: In use, by pushing the guide seat to move it to the marked position, the electric push rod two drives the electromagnet and the pressure block to move around the mounting block as the center. When the electromagnet is in contact with the air duct, the electromagnet limits the guide seat. At the same time, the pressure block drives the T-shaped slider two to move, so that the tooth end of rack two meshes with the tooth end of gear three, and limits the wheel. The connecting block is driven by motor three to rotate around shaft one. When the guide seat is inconvenient to move, the tooth end of rack one is engaged with the tooth end of gear two by electric push rod one, which drives shaft one and connecting block to move. The rack shaft is driven by motor one to rotate according to the scribing requirements. Motor 2 moves the movable support on the rack shaft, which in turn moves the laser positioning transmitter 2, the laser marking transmitter, and the distance sensor mounted on the support on the rack shaft to perform the marking operation.

[0016] This invention provides a laser marking device and method. It has the following beneficial effects: 1. This invention facilitates the movement of the guide seat through a limiting structure, while also securing it firmly to the duct. An adjustment structure allows for slight adjustments to the marking area when the guide seat is difficult to move, thus enhancing the marking range. Furthermore, a dual-positioning collaboration between laser positioning transmitter one and laser positioning transmitter two calibrates the reference position of the opening on the main pipe. Motor one drives the rack shaft to rotate according to the marking requirements. A moving structure moves laser positioning transmitter two, the laser marking transmitter, and the distance sensor on the mounting bracket along the rack shaft, achieving automated and precise marking of the intersection line. This solves the problem of low construction efficiency in existing duct connections.

[0017] 2. In this invention, the electric push rod 2 drives the electromagnet and the pressure block to move around the mounting block as the center. The electromagnet limits the guide seat on the air duct, while the pressure block drives the T-shaped slider 2 to move downward on the mounting seat, so that the tooth end of the rack 2 meshes with the tooth end of the gear 3, limiting the rotating shaft 2 and the rotating wheel to prevent them from moving during the marking operation and enhancing stability.

[0018] 3. In this invention, the motor drives the rotating shaft to rotate, which in turn drives the connecting block to rotate around the rotating shaft, thereby increasing the range of the scribing. When the guide seat is inconvenient to move, the electric push rod drives the T-shaped slider to move. When the tooth end of the rack first meshes with the tooth end of the gear second, the T-shaped moving seat slides on the guide seat, driving the rotating shaft and the connecting block to move, thereby adjusting the scribing area slightly according to the scribing requirements. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a laser scribing device proposed in this invention; Figure 2 This is a partial structural diagram of the rack shaft of a laser scribing device proposed in this invention; Figure 3 This is a schematic diagram of the three-part structure of the motor in the laser scribing device proposed in this invention; Figure 4 This is a partial structural diagram of the mounting support for a laser marking device proposed in this invention; Figure 5 This is a partial structural diagram of a T-shaped slider of a laser scribing device proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the guide seat of a laser scribing device proposed in this invention; Figure 7 This is a schematic diagram of a partial structure of the T-shaped slider of the laser scribing device proposed in this invention.

[0020] The components are as follows: 1. Guide seat; 2. Air duct; 3. Connecting block; 4. Motor 1; 5. Rack shaft; 6. Laser positioning transmitter 1; 7. Support rod; 8. Laser positioning transmitter 2; 9. Laser engraving transmitter; 10. Distance sensor; 11. Mounting support; 12. Moving support; 13. Motor 2; 14. Gear 1; 15. Rotating wheel; 16. Electromagnet fixing seat; 17. Rack 1; 18. T-shaped moving seat; 19. Gear 2; 20. Motor 3; 21. Rotating shaft 1; 22. Electric push rod 1; 23. T-shaped slider 1; 24. Gear 3; 25. Rotating shaft 2; 26. Mounting seat; 27. Electric push rod 2; 28. Battery; 29. ​​Mounting block; 30. Electromagnet; 31. Pressure block; 32. Spring; 33. Rack 2; 34. T-shaped slider 2. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 7 This invention provides a laser marking device and method, including a guide seat 1 and a duct 2. A battery 28 is installed on the inner wall of the guide seat 1. A limiting structure is uniformly installed on one side of the guide seat 1. A T-shaped moving seat 18 is symmetrically slidably connected to the top of the guide seat 1. An adjustment structure is rotatably connected to the opposite side of the T-shaped moving seat 18. A connecting block 3 is fixedly connected to one side of the adjustment structure. A motor 4 is fixedly installed at one end of the connecting block 3. A rack shaft 5 is fixedly connected to the output end of the motor 4. A laser positioning transmitter 6 is installed at one end of the rack shaft 5. A moving structure is provided on one side of the rack shaft 5. A mounting support 11 is fixedly connected to one side of the moving structure. A laser positioning transmitter 8 is installed at one end of the mounting support 11. A laser marking transmitter 9 is installed on one side of the mounting support 11. A distance sensor 10 is installed on the other side of the mounting support 11.

[0023] Specifically, the guide seat 1 provides the installation foundation for each structure, the battery 28 provides power, and the limiting structure facilitates the flexible movement of the guide seat 1 along the axis of the duct 2 to adapt to the marking requirements of different positions. It also securely limits the guide seat 1 to the duct 2 before marking operations, preventing displacement during operation and providing a stable reference for laser marking. The T-shaped movable seat 18 is installed to install the adjustment structure, allowing it to move on the guide seat 1. This allows for slight adjustments to the marking area when the guide seat 1 is not easily movable, improving operational flexibility. It also drives the connecting block 3 to rotate around the adjustment structure, increasing the marking range and adapting to duct connection requirements at different angles. The laser positioning transmitter 1 6 and laser positioning transmitter 2 8 form a dual-positioning collaboration, calibrating the opening reference position on the main pipe and ensuring that the coaxiality and angle between the branch pipe and the main pipe meet installation requirements.

[0024] The operation of motor 4 drives rack shaft 5 to rotate according to the marking requirements, providing circumferential motion power for marking the intersection line. Through the setting of the moving structure, the laser positioning transmitter 8, laser marking transmitter 9 and distance sensor 10 on the mounting support 11 can be moved on rack shaft 5. The distance sensor 10 can collect the distance signal between laser marking transmitter 9 and the outer wall of duct 2 in real time, providing data support for laser focus adjustment. Under the synergistic effect of the rotational motion driven by motor 4 and the height adjustment driven by the moving structure, the laser trajectory projected by laser marking transmitter 9 coincides with the geometry of the intersection line of duct 2, realizing the automated and precise marking of the intersection line. This solves the problem of low construction efficiency in existing duct connection, reduces the difficulty of work, increases the opening accuracy, improves work efficiency, and ensures the fit, sealing and structural stability of the duct connection.

[0025] Please see the appendix Figure 2 Appendix Figure 3 Appendix Figure 6 and attached Figure 7 The limiting structure includes an electric actuator 27 and a rotating wheel 15. One side of the electric actuator 27 is mounted on one side of the guide seat 1. An electromagnet fixing seat 16 is hinged to the output end of the electric actuator 27. A mounting block 29 is rotatably connected to one side of the electromagnet fixing seat 16. One side of the mounting block 29 is fixedly connected to the inner wall of the guide seat 1. An electromagnet 30 is mounted on the bottom of the electromagnet fixing seat 16. A pressure block 31 is fixedly connected to the other side of the electromagnet fixing seat 16. A rotating shaft 25 is fixedly connected to the middle of the rotating wheel 15. One end of the rotating shaft 25 is rotatably connected to the inside of the guide seat 1. A gear 34 is fixedly connected to one side of the rotating shaft 25. A mounting seat 26 is rotatably connected to the outer wall of the rotating shaft 25. One side of the mounting seat 26 is fixedly connected to the inner wall of the guide seat 1. A T-shaped slider 34 is slidably connected to the inner wall of the mounting seat 26. The T-shaped slider 34 is located below the pressure block 31. Springs 32 are symmetrically fixedly connected to the top of T-shaped slider 2 34. One end of spring 32 is fixedly connected to the inner wall of mounting base 26. Rack 2 33 is fixedly connected to the bottom of T-shaped slider 2 34. The tooth end of rack 2 33 can mesh with the tooth end of gear 3 24.

[0026] Specifically, the rotating wheel 15 is mounted on the guide seat 1 via the rotating shaft 25 and the mounting base 26, facilitating the movement of the guide seat 1 on the duct 2. The operation of the electric actuator 27 causes the electromagnet fixing base 16 to rotate around the mounting block 29, thereby driving the electromagnet 30 and the pressure block 31 to move around the mounting block 29. When the electromagnet 30 is in contact with the duct 2, the movement of the electromagnet 30 utilizes magnetic force to limit the guide seat 1 on the duct 2 via the electromagnet fixing base 16 and the mounting block 29. Simultaneously, the movement of the pressure block 31 will interact with the T-shaped sliding... Block 2 34 moves closer or further apart. When electromagnet 30 is attached to duct 2, pressure block 31 will press down synchronously, causing T-shaped slider 2 34 to move downward on mounting base 26 and stretch spring 32, so that the tooth end of rack 2 33 meshes with the tooth end of gear 3 24. Thus, rack 2 33 and gear 3 24 limit the rotating shaft 2 25 and rotating wheel 15. Then, when electromagnet 30 limits guide seat 1 to duct 2, pressure block 31 and rack 2 33 simultaneously limit rotating wheel 15, preventing it from moving during marking operations and enhancing stability.

[0027] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 5 The adjustment structure includes a rotating shaft 21 and an electric actuator 22. The outer wall of the rotating shaft 21 is rotatably connected to one side of a T-shaped movable seat 18. A motor 20 is fixedly mounted on one side of one of the T-shaped movable seats 18. The output end of the motor 20 is fixedly connected to one end of the rotating shaft 21. The middle part of the rotating shaft 21 is fixedly connected to one side of the connecting block 3. A gear 19 is fixedly connected to the outer wall of the rotating shaft 21. One side of the electric actuator 22 is fixedly mounted on one side of one of the T-shaped movable seats 18. A T-shaped slider 23 is fixedly connected to the output end of the electric actuator 22. A rack 17 is slidably connected to the outer wall of the T-shaped slider 23. The bottom of the rack 17 is slidably connected to the top of the guide seat 1. The tooth end of the rack 17 can mesh with the tooth end of the gear 19.

[0028] Specifically, the operation of motor 20 drives shaft 21 to rotate between T-shaped moving seats 18, which in turn drives connecting block 3 to rotate around shaft 21, thereby increasing the scribing range. When guide seat 1 is inconvenient to move, electric push rod 22 drives T-shaped slider 23 to move, which in turn drives rack 17 to slide on guide seat 1. When the tooth end of rack 17 moves to mesh with the tooth end of gear 19, motor 20 and shaft 21 drive gear 19 to rotate. Then, the rotational connection between shaft 21 and T-shaped moving seat 18, the sliding connection between T-shaped moving seat 18 and guide seat 1, and the limiting position of rack 17 on guide seat 1 allow T-shaped moving seat 18 to slide on guide seat 1, driving shaft 21 and connecting block 3 to move, thereby slightly adjusting the scribing area according to scribing requirements.

[0029] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 The movable structure includes a movable support 12, the inner wall of which is slidably connected to the outer wall of the rack shaft 5. A second motor 13 is fixedly mounted on one side of the movable support 12, and a first gear 14 is fixedly connected to the output end of the second motor 13. One end of the first gear 14 is rotatably connected inside the movable support 12. The tooth end of the first gear 14 is meshed with the tooth end of the rack shaft 5. A support rod 7 is fixedly connected to one end of the movable support 12, and one end of the support rod 7 is fixedly connected to one side of the mounting support 11.

[0030] Specifically, the operation of motor 13 drives gear 14 to rotate, and the meshing of gear 14 with rack shaft 5 and the sliding of movable support 12 with rack shaft 5 cause movable support 12 to move on rack shaft 5, thereby driving support rod 7 to move, and then driving mounting support 11 to move, so that line marking operations can be performed according to the requirements of line marking.

[0031] It should be noted that the moving structure that drives the support rod 7 in this application is not limited to the gear-rack shaft meshing transmission method mentioned above. Belt drive or screw drive, etc., can also be used as alternative solutions. All of these can achieve smooth movement and positioning of the support rod 7 and the mounting bracket 11, meet the movement adjustment requirements of the mounting bracket 11, ensure the positional accuracy of components such as the laser marking transmitter 9 and the distance sensor 10, achieve the same technical effect as gear-rack shaft transmission, realize the directional movement of the support rod 7, and thus complete the precise marking operation.

[0032] A laser scribing method, applied to the aforementioned laser scribing device, includes the following steps: In use, by pushing the guide seat 1 to move it to the marked position on 2, the electric push rod 2 drives the electromagnet 30 and the pressure block 31 to move around the mounting block 29 as the center. When the electromagnet 30 is in contact with the air duct 2, the electromagnet 30 limits the guide seat 1. At the same time, the pressure block 31 drives the T-shaped slider 34 to move, so that the tooth end of the rack 33 meshes with the tooth end of the gear 24, and limits the rotating wheel 15. The motor 20 drives the connecting block 3 to rotate around the rotating shaft 21. When the guide seat 1 is inconvenient to move, the electric push rod 22 makes the tooth end of the rack 17 mesh with the tooth end of the gear 19, driving the rotating shaft 21 and the connecting block 3 to move. The motor 4 drives the rack shaft 5 to rotate according to the scribing requirements. Motor 13 moves the movable support 12 on the rack shaft 5, which in turn moves the laser positioning transmitter 8, laser marking transmitter 9, and distance sensor 10 mounted on the support 11 on the rack shaft 5 to perform the marking operation.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser marking device, comprising a guide seat (1) and an air duct (2), characterized in that: A battery (28) is installed on the inner wall of the guide seat (1). A limiting structure is evenly installed on one side of the guide seat (1). A T-shaped moving seat (18) is symmetrically slidably connected to the top of the guide seat (1). An adjustment structure is rotatably connected to the opposite side of the T-shaped moving seat (18). A connecting block (3) is fixedly connected to one side of the adjustment structure. A motor (4) is fixedly installed at one end of the connecting block (3). A rack shaft (5) is fixedly connected to the output end of the motor (4). A laser positioning transmitter (6) is installed at one end of the rack shaft (5). A moving structure is provided on one side of the rack shaft (5). A mounting support (11) is fixedly connected to one side of the moving structure. A laser positioning transmitter (8) is installed at one end of the mounting support (11). A laser marking transmitter (9) is installed on one side of the mounting support (11). A distance sensor (10) is installed on the other side of the mounting support (11).

2. The laser marking device according to claim 1, characterized in that: The limiting structure includes an electric actuator (27) and a rotating wheel (15). One side of the electric actuator (27) is mounted on one side of the guide seat (1). The output end of the electric actuator (27) is hinged to an electromagnet fixing seat (16). One side of the electromagnet fixing seat (16) is rotatably connected to a mounting block (29).

3. The laser marking device according to claim 2, characterized in that: One side of the mounting block (29) is fixedly connected to the inner wall of the guide seat (1), an electromagnet (30) is installed at the bottom of the electromagnet fixing seat (16), and a pressure block (31) is fixedly connected to the other side of the electromagnet fixing seat (16).

4. The laser marking device according to claim 2, characterized in that: A rotating shaft 2 (25) is fixedly connected to the middle of the rotating wheel (15). One end of the rotating shaft 2 (25) is rotatably connected to the inside of the guide seat (1). A gear 3 (24) is fixedly connected to one side of the rotating shaft 2 (25). A mounting seat (26) is rotatably connected to the outer wall of the rotating shaft 2 (25). One side of the mounting seat (26) is fixedly connected to the inner wall of the guide seat (1). A T-shaped slider 2 (34) is slidably connected to the inner wall of the mounting seat (26). The T-shaped slider 2 (34) is located below the pressure block (31).

5. The laser marking device according to claim 1, characterized in that: A spring (32) is symmetrically fixedly connected to the top of the T-shaped slider two (34). One end of the spring (32) is fixedly connected to the inner wall of the mounting base (26). A rack two (33) is fixedly connected to the bottom of the T-shaped slider two (34). The tooth end of the rack two (33) can mesh with the tooth end of the gear three (24).

6. The laser marking device according to claim 1, characterized in that: The adjustment structure includes a rotating shaft (21) and an electric actuator (22). The outer wall of the rotating shaft (21) is rotatably connected to the opposite side of the T-shaped moving seat (18). A motor (20) is fixedly installed on one side of one of the T-shaped moving seats (18). The output end of the motor (20) is fixedly connected to one end of the rotating shaft (21). The middle part of the rotating shaft (21) is fixedly connected to one side of the connecting block (3). A gear (19) is fixedly connected to the outer wall of the rotating shaft (21).

7. The laser marking device according to claim 6, characterized in that: One side of the electric actuator (22) is fixedly installed on one side of one of the T-shaped moving seats (18). The output end of the electric actuator (22) is fixedly connected to the T-shaped slider (23). The outer wall of the T-shaped slider (23) is slidably connected to the rack (17). The bottom of the rack (17) is slidably connected to the top of the guide seat (1). The tooth end of the rack (17) can mesh with the tooth end of the gear (19).

8. The laser marking device according to claim 1, characterized in that: The movable structure includes a movable support (12), the inner wall of which is slidably connected to the outer wall of the rack shaft (5), a motor (13) is fixedly installed on one side of the movable support (12), and a gear (14) is fixedly connected to the output end of the motor (13), and one end of the gear (14) is rotatably connected to the inside of the movable support (12).

9. A laser marking device according to claim 8, characterized in that: The tooth end of the gear (14) is meshed with the tooth end of the rack shaft (5), and one end of the movable support (12) is fixedly connected to a support rod (7), and one end of the support rod (7) is fixedly connected to one side of the mounting support (11).

10. A laser scribing method, characterized in that: The laser marking device according to any one of claims 1-9 comprises the following steps: When in use, push the guide seat (1) to move it to the marked position on (2), and drive the electromagnet (30) and the pressure block (31) to move around the mounting block (29) as the center. When the electromagnet (30) is in contact with the air duct (2), the guide seat (1) is limited by the electromagnet (30). At the same time, the pressure block (31) drives the T-shaped slider (34) to move, so that the tooth end of the rack (33) meshes with the tooth end of the gear (24), and the rotating wheel (15) is limited. The connecting block (3) is driven by motor three (20) to rotate around the rotating shaft one (21) as the center. When the guide seat (1) is inconvenient to move, the tooth end of rack one (17) is meshed with the tooth end of gear two (19) by electric push rod one (22), which drives the rotating shaft one (21) and the connecting block (3) to move. The rack shaft (5) is driven by motor one (4) to rotate according to the marking requirements. The moving support (12) is moved on the rack shaft (5) by the motor (13), which drives the laser positioning transmitter (8), laser marking transmitter (9) and distance sensor (10) on the support (11) to move on the rack shaft (5) to perform the marking operation.

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