Accurate positioning track structure for laser marking

Abstract

The invention provides a precise positioning track structure for laser marking, and relates to the technical field of marking equipment, the precise positioning track structure for laser marking comprises a marking table, a microcontroller including an STM driving gear and the like, a cloud data module, a big data analysis module and a data transmission module, and the interior of the marking table is fixedly connected with a driving assembly. According to the design, an operator can observe and intervene in the marking process in real time, marking parameters can be adjusted in real time through a big data analysis module, potential factors influencing the marking quality can be recognized by the equipment, corresponding adjustment can be made, and the marking efficiency is improved. And high-speed rotation of the motor is converted into low-speed high-torque output suitable for precise adjustment, symmetrical operation of linear motion is achieved, it is ensured that the same precision and quality can be achieved in each time of marking, the requirement for manual calibration can be effectively reduced, personal errors are reduced, and the production efficiency is improved. And the consistency of the marking process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of marking equipment, and in particular to a precise positioning track structure for laser marking. Background Art

[0002] Laser marker is a device that uses laser technology to make permanent marks on the surface of various materials. This device irradiates the surface of the material by focusing the laser beam, causing physical or chemical changes on the surface of the material, thus forming a clear and recognizable mark. Laser markers are widely used in industrial production for product identification, anti-counterfeiting, traceability and other purposes.

[0003] In application scenarios with high precision requirements, the accuracy requirements for laser marking are extremely high. In the traditional partial laser marking process, in order to ensure that the laser beam can accurately irradiate the predetermined position of the workpiece, the operator needs to manually adjust the position of the marking head. This process is called manual calibration. However, manual calibration is not only inefficient, but also due to the existence of human factors, it is difficult to ensure that each marking can achieve the same accuracy and quality.

[0004] Therefore, in order to solve the above problems, a precise positioning track structure for laser marking is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and provide a precise positioning track structure for laser marking.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solutions: a precise positioning track structure for laser marking, including a marking platform, a microcontroller including an STM drive gear, a cloud data module, a big data analysis module, and a data transmission module; The interior of the marking platform is fixedly connected with a driving component, the interior of the marking platform is fixedly connected with a precision adjustment component, the top of the marking platform is fixedly connected with a positioning component, the interior of the positioning component is fixedly connected with a spacing adjustment component, and the top of the marking platform is fixedly connected with an information extraction component; The precision adjustment assembly includes a support column, and two support columns are provided. The top end of one of the support columns is rotatably connected to a driving gear, and the top end of the other support column is rotatably connected to a driven differential gear. The top end of the driving gear is fixedly connected to an active differential gear, the top end of the active differential gear is fixedly connected to a half gear one, and the top end of the driven differential gear is fixedly connected to a half gear two. The interior of the marking platform is slidably connected to a transmission rack.

[0007] As a preferred embodiment, the big data analysis module includes a data collection module for collecting equipment data, a data analysis module for analyzing marking effects based on historical data and real-time data, and a data processing module for dynamically adjusting marking parameters.

[0008] The technical effect of adopting the above technical solution is: intelligent analysis and prediction of the marking process, thereby reducing the need for manual calibration, thereby reducing labor costs and improving production efficiency.

[0009] As a preferred implementation, the data transmission module includes a Bluetooth module for transmitting data between devices and a Wi-Fi module for data transmission and communication.

[0010] The technical effect of adopting the above technical solution is: realizing wireless data exchange between devices and improving the flexibility of data transmission.

[0011] As a preferred embodiment, the information extraction component includes a laser marking head, the outer side of the laser marking head is installed on a marking platform, a laser sensor is installed at the output end of the laser marking head, and a camera is installed on the side of the top of the marking platform away from the laser marking head.

[0012] The technical effect of adopting the above technical solution is: achieving real-time monitoring and precise control of the marking process, ensuring the stability and consistency of the marking quality.

[0013] As a preferred embodiment, the drive assembly includes a motor body, the bottom end of the motor body is fixedly connected to the marking table, the outer side of the driving end of the motor body is fixedly connected to an encoder body, and the driving end of the motor body is fixedly connected to a worm gear.

[0014] The technical effect of adopting the above technical solution is: enabling the marked part to move accurately along a predetermined trajectory, thereby achieving a high-efficiency and high-quality marking effect.

[0015] As a preferred embodiment, the positioning assembly includes a placement plate, the outer side of the placement plate is fixedly connected to the marking table, the interior of the placement plate is slidably connected to an adjustment plate, one end of the adjustment plate is fixedly connected to polyurethane, the end of the polyurethane away from the adjustment plate is fixedly connected to the positioning plate, both sides of the bottom end of the positioning plate are fixedly connected to sliders, and a sliding groove is opened inside the placement plate.

[0016] The technical effect of adopting the above technical solution is: achieving precise adjustment of the laser marking position and ensuring the marking accuracy.

[0017] As a preferred embodiment, the spacing adjustment component includes a micro motor, the outer side of the micro motor is installed on the adjustment plate, the outer side of the driving end of the micro motor is fixedly connected to a micro encoder, the driving end of the micro motor is fixedly connected to a connecting column, the bottom end of the connecting column is fixedly connected to a driving bevel gear, the internal rotation of the micro encoder is connected to a driven bevel gear, and one end of the driven bevel gear is fixedly connected to a screw rod.

[0018] The technical effect of adopting the above technical solution is that accurate positioning and fine-tuning of the marked parts can be achieved, thereby improving the accuracy of laser marking.

[0019] As a preferred embodiment, the worm gear is meshed with the driving gear, the active differential gear is meshed with the driven differential gear, the half gear 1 is meshed with the transmission rack, and the half gear 2 is meshed with the transmission rack.

[0020] The technical effect of adopting the above technical solution is: achieving stable movement and precise control of the workpiece during the laser marking process, ensuring the consistency of the marking process.

[0021] As a preferred embodiment, the outer side of the sliding block is slidably connected to the sliding groove, the end of the screw rod away from the driven bevel gear is rotatably connected to the mounting plate, and the driving bevel gear is meshingly connected to the driven bevel gear.

[0022] The technical effect of adopting the above technical solution is: the entire positioning track structure can operate stably during the laser marking process and reduce errors.

[0023] As a preferred implementation, the tooth pitch ratio of the driving gear to the active differential gear and the driven differential gear is 2:1:1, and the tooth pitch ratio of the driving gear to the half gear 1 is 1:1.

[0024] The technical effect of adopting the above technical solution is: achieving a precise positioning effect with fine adjustment.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are: The worm gear is driven by the motor body, and the worm gear is meshed with the active differential gear. This design realizes precise speed control and torque conversion. The low-speed and high-torque characteristics of the worm gear allow the marking head to be finely adjusted, and the tooth ratio design of the active differential gear and the driven differential gear further ensures that the marking part can achieve precise acceleration and deceleration movement. This design can convert the high-speed rotation of the motor into a low-speed and high-torque output suitable for precise adjustment, while realizing symmetrical operation of linear motion, ensuring that each marking can achieve the same accuracy and quality, which can effectively reduce the need for manual calibration, reduce human errors, and improve the consistency of the marking process.

[0026] The laser marking head is used to engrave or mark the surface of the target material. The laser sensor monitors the exact position of the marking in real time to ensure the quality and consistency of each operation. In addition, the camera monitors and records the entire marking process in real time. The collected images can be compared with the design template to intelligently control the quality and identify deviations. This design realizes remote monitoring and intelligent quality control, which is beneficial for the operator to observe and intervene in the marking process in real time. Through the big data analysis module, the marking parameters can be adjusted in real time. Secondly, the equipment can identify potential factors affecting the marking quality and make corresponding adjustments to optimize the marking effect.

[0027] The active bevel gear is driven by a micro motor, and then the meshing driven bevel gear rotates, thereby driving the connected lead screw. The rotational motion of the lead screw is converted into linear motion, driving the positioning plate for fine-tuning positioning. This design realizes the precise displacement and position adjustment of the positioning plate, ensuring the precise positioning of the marked parts in the equipment. Combined with the use of micro motors and encoders, the system can achieve precise control, feedback and adjustment of the movement of the positioning plate, improving the positioning accuracy and system response speed. Compared with traditional manual adjustment and low-precision mechanical positioning methods, it has higher efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure Description Figure 1 It is a stereoscopic diagram of a precise positioning track structure for laser marking provided by the present invention; Figure 2 It is an internal schematic diagram of a marking platform with a precise positioning track structure for laser marking provided by the present invention; Figure 3 It is a schematic diagram of the disassembly of a precision adjustment component of a precise positioning track structure for laser marking provided by the present invention; Figure 4 It is a schematic diagram of a precise positioning track structure precision adjustment component for laser marking provided by the present invention; Figure 5 It is a schematic diagram of a spacing adjustment component of a precise positioning track structure for laser marking provided by the present invention; Figure 6 It is a system flow chart of a precise positioning track structure for laser marking provided by the present invention; Figure 7 It is a flow chart of a precise positioning track structure for laser marking provided by the present invention.

[0029] 1. Marking table; 2. Driving assembly; 21. Motor body; 22. Encoder body; 23. Worm gear; 3. Precision adjustment assembly; 31. Support column; 32. Driving gear; 33. Active differential gear; 34. Driven differential gear; 35. Half gear one; 36. Half gear two; 37. Transmission rack; 4. Positioning assembly; 41. Placement plate; 42. Adjustment plate; 43. Polyurethane; 44. Positioning plate; 45. Slider; 46. Slide; 5. Spacing adjustment assembly; 51. Micro motor; 52. Micro encoder; 53. Connecting column; 54. Driving bevel gear; 55. Driven bevel gear; 56. Screw; 6. Information extraction component; 61. Laser marking head; 62. Laser sensor; 63. Camera. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1: Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a precise positioning track structure for laser marking, comprising a marking platform 1, a driving component 2 is fixedly connected inside the marking platform 1, a precision adjustment component 3 is fixedly connected inside the marking platform 1, a positioning component 4 is fixedly connected to the top of the marking platform 1, a spacing adjustment component 5 is fixedly connected inside the positioning component 4, and an information extraction component 6 is fixedly connected to the top of the marking platform 1; The driving assembly 2 includes a motor body 21, the bottom end of the motor body 21 is fixedly connected to the marking table 1, the outer side of the driving end of the motor body 21 is fixedly connected to an encoder body 22, and the driving end of the motor body 21 is fixedly connected to a worm gear 23; The precision adjustment component 3 includes a support column 31, and two support columns 31 are provided. The top of one of the support columns 31 is rotatably connected to a driving gear 32, and the top of the other support column 31 is rotatably connected to a driven differential gear 34. The tooth pitch ratio of the driving gear 32 to the driving differential gear 33 and the driven differential gear 34 is 2:1:1. The top of the driving gear 32 is fixedly connected to the driving differential gear 33, and the driving differential gear 33 is meshed with the driven differential gear 34. The worm gear 23 is meshed with the driving gear 32. The top of the driving differential gear 33 is fixedly connected to a half gear 1 35, and the tooth pitch ratio of the driving gear 32 to the half gear 1 35 is 1:1. The top of the driven differential gear 34 is fixedly connected to a half gear 2 36, the marking table 1 is internally slidably connected with a transmission rack 37, the half gear 1 35 is meshed with the transmission rack 37, and the half gear 2 36 is meshed with the transmission rack 37. The marking table 1 is the basic structure of the entire system, carrying other components to ensure the stability of the system during operation. The driving component 2 uses the motor body 21 as a power source to drive other components by rotation. Its bottom is fixed on the marking table 1 to ensure the stability of the motor. The encoder body 22 connected to the outer side of the driving end is used for real-time detection and feedback of the motor movement state to ensure that the system can accurately adjust the position as needed. The driving end of the motor is coupled with other components through the worm gear 23. The use of the worm gear 23 can convert the high-speed rotation of the motor into a low-speed high-torque output The precision adjustment component 3 is mainly responsible for fine position adjustment during the marking process. The two support columns 31 provide mechanical support and rotation bearing functions. The top of each support column 31 is respectively connected to a driving gear 32 and a driven differential gear 34. The driving gear 32 is connected to the worm gear 23 of the motor, and the driven differential gear 34 is meshed with it. The tooth pitch ratio of the driving gear 32 to the active differential gear 33 and the driven differential gear 34 is 2:1:1, which ensures that the differential gear can achieve a speed increase / deceleration ratio, so that the marking part can be moved finely. The active differential gear 33 is connected to the top of the driving gear 32 and meshes with the driven differential gear 34. The active differential gear 33 is driven by the worm gear 23, thereby achieving More precise movement and positioning are achieved, and then the meshing of the half gear 1 35 with the half gear 2 36 and the transmission rack 37 is converted into linear motion, and since the tooth pitch ratio of the driving gear 32 and the half gear 1 35 is 1:1, the tooth pitch ratio of the half gear 1 35 with the half gear 2 36 and the active differential gear 33 with the driven differential gear 34 is 2:1, thereby achieving more precise movement of the marking parts, and the half gear 1 35 and the half gear 2 36 are designed to be reversely symmetrical, so that when the half gear 1 35 is meshed and connected with the transmission rack 37, linear movement in one direction can be achieved, and when the half gear 2 36 and the transmission rack 37 move, movement in the opposite direction can be achieved, thereby achieving precise adjustment of the marking parts; like Figure 1 , Figure 6As shown, it includes a microcontroller such as an STM driving gear 32, a cloud data module, a big data analysis module, and a data transmission module. The information extraction component 6 includes a laser marking head 61. The outer side of the laser marking head 61 is installed on the marking table 1. A laser sensor 62 is installed at the output end of the laser marking head 61. A camera 63 is installed on the top of the marking table 1 away from the laser marking head 61. The laser marking head 61 engraves or marks the surface of the material through a high-intensity and precise light beam. The laser sensor 62 is responsible for real-time monitoring of the specific marking position of the marked part to ensure the quality and consistency of the marking. The camera 63 is responsible for real-time monitoring of the marking process and results. It not only supports the operator to remotely observe the progress of the operation, but also records the visual information of the marking process as the basic data for quality inspection and subsequent analysis. The images collected by the camera 63 can be compared with the marking design drawings to identify deviations, thereby realizing intelligent quality control; The big data analysis module includes a data collection module for collecting device data, a data analysis module for analyzing the marking effect based on historical data and real-time data, and a data processing module for dynamically adjusting marking parameters. The data transmission module includes a Bluetooth module for transmitting data between devices and a Wi-Fi module for data transmission and communication. The data collection module continuously collects the operation data of the equipment through sensors installed at various key positions of the equipment, and integrates and transmits these data to the cloud or local server to form a comprehensive equipment operation archive. The data analysis module conducts in-depth analysis of the collected historical data and real-time data based on data mining algorithms and decision tree models to identify potential factors and patterns that affect the marking effect. The data processing module optimizes the marking effect by dynamically adjusting the relevant parameters of the marking. The data processing module is based on an adaptive control algorithm and achieves the best operating state through continuous adjustment and feedback. The Bluetooth module is used for efficient data transmission between short-distance devices, and the Wi-Fi module is responsible for a wider range of network data transmission and device networking functions, so that the data of the entire system can be uploaded to the cloud for storage and remote analysis. like Figure 1 , Figure 3 and Figure 5As shown, the positioning assembly 4 includes a placement plate 41, the outer side of the placement plate 41 is fixedly connected to the marking table 1, the interior of the placement plate 41 is slidably connected to an adjustment plate 42, one end of the adjustment plate 42 is fixedly connected to a polyurethane 43, the end of the polyurethane 43 away from the adjustment plate 42 is fixedly connected to a positioning plate 44, both sides of the bottom end of the positioning plate 44 are fixedly connected to sliders 45, a slide groove 46 is provided inside the placement plate 41, and the outer side of the slider 45 is slidably connected to the slide groove 46. The placement plate 41 serves as the base of the entire positioning system, and its outer side is fixed on the marking table 1, providing a stable installation position for the marking part to prevent position deviation caused by external forces, and the adjustment plate 42 slides inside the placement plate 41 The flexible sliding design of the adjusting plate 42 enables the equipment to be precisely adjusted within a specified range, so that the position of the positioning plate 44 can be fine-tuned as needed. The polyurethane 43 is an elastic material, which is connected between the adjusting plate 42 and the positioning plate 44. Its main function is to reduce vibration and impact and maintain the stability of the marking process. Secondly, by fixing the slider 45 on both sides of the bottom end of the positioning plate 44 and sliding the slider 45 in the slide groove 46 of the placement plate 41, a smooth sliding positioning is achieved. The slide groove 46 provides a controlled sliding path to ensure that the positioning plate 44 only moves along the predetermined path to prevent the accumulation of errors. The spacing adjustment component 5 includes a micro motor 51, the outer side of the micro motor 51 is installed on the adjustment plate 42, the outer side of the driving end of the micro motor 51 is fixedly connected with a micro encoder 52, the driving end of the micro motor 51 is fixedly connected with a connecting column 53, the bottom end of the connecting column 53 is fixedly connected with a driving bevel gear 54, the internal rotation of the micro encoder 52 is connected with a driven bevel gear 55, the driving bevel gear 54 and the driven bevel gear 55 are meshingly connected, one end of the driven bevel gear 55 is fixedly connected with a screw rod 56, the end of the screw rod 56 away from the driven bevel gear 55 is rotatably connected to the placement plate 41, the micro motor 51 is placed on the adjustment plate 42, and is the power source of the entire spacing adjustment The driving end of the micro motor 51 is connected to a micro encoder 52, so that when the motor is running, the encoder can monitor and feedback the rotational displacement of the motor in real time to ensure the accuracy of the drive. The drive of the micro motor 51 is transmitted to the active bevel gear 54 through the connecting column 53, and the latter converts the rotational motion of the motor and transmits it to the driven bevel gear 55. The driven bevel gear 55 is meshed with the active bevel gear 54 to ensure the smooth transmission of power. The screw rod 56 connected to the driven bevel gear 55 is threadedly connected to the positioning plate 44, so that the screw rod 56 converts this rotational motion into linear motion when it rotates, which is used to adjust the position on the positioning plate 44, thereby achieving the fixation of the marking part.

[0032] Working principle: Figure 1 - Figure 6 As shown: During use: first, the marking part is placed on the placement plate 41, then the micro motor 51 is started, and the active bevel gear 54 is driven by the connecting column 53, and the rotary motion is converted into further linear motion through the screw 56 by meshing with the driven bevel gear 55, and then the adjustment plate 42 and the positioning plate 44 are ensured to be accurately positioned along the predetermined path through the placement plate 41 and the slide 46, and the distance between the positioning plate 44 and the marking part is fine-tuned. At the same time, the camera 63 takes a picture of the marking part, transmits the data to the cloud data, and then customizes the marking plan for the marking part through the local system, and then the motor body 2 is placed. 1 is activated as the power source of the whole system. Its driving end converts high-speed rotation into low-speed high-torque output suitable for fine adjustment through the worm gear 23. Then the worm gear 23 drives the driving gear 32. The driving gear 32 is connected to the driven differential gear 34 through the active differential gear 33. This chain converts the rotational motion into motion characteristics suitable for precise movement. Next, the active differential gear 33 converts the rotational motion into linear motion through the half gear 1 35 meshed with the transmission rack 37, so as to realize the precise movement and positioning of the marking part on the marking table 1, and the half gear 1 35 is released from the meshing with the transmission rack 37. At this time, the half gear 2 36 meshes with the transmission rack 37 to achieve the reciprocating motion effect of the marked part. The laser marking head 61 performs high-precision marking on the material surface. At the same time, the laser sensor 62 monitors the marking quality and consistency in real time, and monitors and records through the camera 63 to provide data support for further quality inspection and analysis. With the help of the big data analysis module and the data transmission module, the process is optimized and adjusted in real time. In this process, the data collection module continuously collects the operation data of the equipment through sensors installed at various key positions of the equipment. These sensors perceive and record the working status and marking status of the equipment in real time. Then, these collected data are integrated and transmitted to the cloud or local server through the data transmission module. The data transmission module uses the Bluetooth module to complete short-distance efficient data transmission, while the Wi-Fi module is responsible for a wider range of network data transmission and device networking functions. The immediate data analysis module conducts in-depth analysis of the integrated historical data and real-time data. The module evaluates and identifies the key factors affecting the marking effect by identifying the patterns and potential factors in the data. After identifying the influencing factors, the data processing module continuously adjusts the marking parameters according to the feedback analysis results to optimize the overall marking effect.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A precise positioning track structure for laser marking, comprising a marking platform (1), characterized in that: Including microcontrollers such as STM drive gears, cloud data modules, big data analysis modules, and data transmission modules; The marking platform (1) is fixedly connected to a driving component (2) inside, the marking platform (1) is fixedly connected to a precision adjustment component (3) inside, the top of the marking platform (1) is fixedly connected to a positioning component (4), the positioning component (4) is fixedly connected to a spacing adjustment component (5), and the top of the marking platform (1) is fixedly connected to an information extraction component (6); The precision adjustment assembly (3) comprises a support column (31), wherein two support columns (31) are provided, wherein the top end of one of the support columns (31) is rotatably connected to a driving gear (32), and the top end of the other support column (31) is rotatably connected to a driven differential gear (34), the top end of the driving gear (32) is fixedly connected to an active differential gear (33), the top end of the active differential gear (33) is fixedly connected to a half gear 1 (35), the top end of the driven differential gear (34) is fixedly connected to a half gear 2 (36), and the interior of the marking platform (1) is slidably connected to a transmission rack (37).

2. The precise positioning track structure for laser marking according to claim 1, characterized in that: The big data analysis module includes a data collection module for collecting equipment data, a data analysis module for analyzing marking effects based on historical data and real-time data, and a data processing module for dynamically adjusting marking parameters.

3. The precise positioning track structure for laser marking according to claim 1, characterized in that: The data transmission module includes a Bluetooth module for transmitting data between devices and a Wi-Fi module for data transmission and communication.

4. The precise positioning track structure for laser marking according to claim 1, characterized in that: The information extraction component (6) comprises a laser marking head (61), the outer side of the laser marking head (61) is mounted on the marking platform (1), a laser sensor (62) is mounted on the output end of the laser marking head (61), and a camera (63) is mounted on the top of the marking platform (1) away from the laser marking head (61).

5. The precise positioning track structure for laser marking according to claim 1, characterized in that: The drive assembly (2) comprises a motor body (21), the bottom end of the motor body (21) is fixedly connected to the marking table (1), the outer side of the drive end of the motor body (21) is fixedly connected to an encoder body (22), and the drive end of the motor body (21) is fixedly connected to a worm gear (23).

6. The precise positioning track structure for laser marking according to claim 5, characterized in that: The positioning assembly (4) comprises a placement plate (41), the outer side of the placement plate (41) is fixedly connected to the marking table (1), the interior of the placement plate (41) is slidably connected to an adjustment plate (42), one end of the adjustment plate (42) is fixedly connected to polyurethane (43), the end of the polyurethane (43) away from the adjustment plate (42) is fixedly connected to a positioning plate (44), both sides of the bottom end of the positioning plate (44) are fixedly connected to sliders (45), and a slide groove (46) is provided inside the placement plate (41).

7. The precise positioning track structure for laser marking according to claim 6, characterized in that: The spacing adjustment component (5) comprises a micro motor (51), the outer side of the micro motor (51) is mounted on the adjustment plate (42), the outer side of the driving end of the micro motor (51) is fixedly connected to a micro encoder (52), the driving end of the micro motor (51) is fixedly connected to a connecting column (53), the bottom end of the connecting column (53) is fixedly connected to a driving bevel gear (54), the inside of the micro encoder (52) is rotatably connected to a driven bevel gear (55), and one end of the driven bevel gear (55) is fixedly connected to a lead screw (56).

8. The precise positioning track structure for laser marking according to claim 5, characterized in that: The worm gear (23) is meshedly connected to the driving gear (32), the active differential gear (33) is meshedly connected to the driven differential gear (34), the half gear 1 (35) is meshedly connected to the transmission rack (37), and the half gear 2 (36) is meshedly connected to the transmission rack (37).

9. The precise positioning track structure for laser marking according to claim 7, characterized in that: The outer side of the slide block (45) is slidably connected to the slide groove (46), one end of the screw rod (56) away from the driven bevel gear (55) is rotatably connected to the placement plate (41), and the driving bevel gear (54) and the driven bevel gear (55) are meshingly connected.

10. The precise positioning track structure for laser marking according to claim 1, characterized in that: The tooth pitch ratio of the driving gear (32) to the active differential gear (33) and the driven differential gear (34) is 2:1:1, and the tooth pitch ratio of the driving gear (32) to the half gear 1 (35) is 1:1.

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