Wire beam laser etching system based on three-dimensional path planning

Abstract

The invention relates to the related technical field of laser processing, in particular to a linear beam laser etching system based on three-dimensional path planning, which comprises a workbench, a clamping module, an upper-layer base, a bearing seat, a pushing cylinder, a laser module, a track module and a profiling module. Through a unique clamping mode, the position of the central axis of the wire harness is ensured to be absolutely constant no matter how the diameter of the wire harness changes. The center of the motion trail of the laser head is taken as a reference, and the rotation center of the laser head is always overlapped with the center of the wire harness, so that the stability of the etching geometrical relationship is fundamentally ensured. And secondly, when the diameter of the wire harness changes in the etching process, the laser head can perform accurate radial adjustment to compensate focal length change, and the core rotation center of the laser head is kept unchanged. And a precise compensation mechanism ensures that the radial adjustment action is triggered only when the laser head moves to a diameter change point, and error adjustment is avoided.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and in particular to a line-beam laser etching system based on three-dimensional path planning. Background Technology

[0002] Laser etching technology is a key process in modern wire harness manufacturing. With increasing demands for complexity and precision in wire harnesses from industries such as automotive and aerospace, traditional marking methods are no longer sufficient to meet high-standard identification requirements due to their susceptibility to wear and tear. Laser technology utilizes a high-energy-density beam to rapidly ablate permanent markings such as QR codes, serial numbers, and component models onto the surface of wire insulation. This high-precision, high-speed, non-contact processing not only significantly improves production automation and quality control but also provides reliable assurance for the entire lifecycle traceability and maintenance of wire harnesses, making it an indispensable core component.

[0003] In existing laser etching processes, such as Chinese Patent Publication No. CN212122085U, a laser marking machine for wire harnesses is disclosed. The laser machine chassis and bracket are respectively mounted on the base. The laser machine chassis is equipped with a laser machine power supply and a galvanometer power supply. The horizontal bracket adjustment handle and the vertical bracket adjustment handle are respectively connected to the bracket. The control board is mounted on the laser generator, which is mounted on the bracket. The vertical height and front-back distance are adjusted by the horizontal bracket adjustment handle and the vertical bracket adjustment handle. The laser beam emitted by the laser generator is reflected by the fiber optic transmitter to the reflector of the galvanometer, and then focused on the surface of the wire through the lens.

[0004] The aforementioned existing technologies primarily achieve the goal of eliminating the need for wires to remain stationary while marking. However, these technologies cannot guarantee the absolute constancy of the wire bundle's central axis. This makes it difficult to align the laser's rotation center with the actual center of the wire bundle. When the wire bundle diameter changes, this mismatch worsens, leading to distorted etching paths, deformed markings, and an inability to guarantee that the laser is always incident perpendicularly, severely affecting etching accuracy. Furthermore, they lack a precise, position-dependent triggering mechanism. The inability to ensure that the laser head only performs radial adjustments when it reaches a diameter change point may result in malfunctions or adjustment delays, disrupting the continuity and accuracy of etching.

[0005] Therefore, there is still room for improvement in the aforementioned existing technologies. Summary of the Invention

[0006] To adapt to different wire beams and ensure the stability of the laser etching distance, this application provides a wire beam laser etching system based on three-dimensional path planning.

[0007] The line-beam laser etching system based on three-dimensional path planning provided in this application adopts the following technical solution:

[0008] The wire beam laser etching system based on three-dimensional path planning includes a worktable with a clamping module for clamping and fixing the wire beam at a constant center, an upper base mounted on the worktable with a carrier seat slidably mounted on it, and a push cylinder for moving the carrier seat. A laser module is mounted on the carrier seat via a trajectory module for guiding and limiting the laser module's movement trajectory, and a contouring module located at the lower front of the carrier seat for sensing the external dimensions of the wire beam to drive the laser module to automatically follow the three-dimensional surface contour of the wire beam during etching, maintaining optimal etching posture and focal length at all times.

[0009] Preferably, the clamping module includes a movable seat that slides back and forth on the worktable, and the movable seat and the worktable are engaged by a threaded rod. Rotating the threaded rod can drive the movable seat to move. A V-shaped component is slidably mounted on the movable seat, and the V-shaped component is arranged symmetrically. A drive motor is located inside the movable seat, and a threaded rod is connected to the output end of the drive motor. The threaded rod and the V-shaped component are threadedly engaged. Rotating the threaded rod can cause the V-shaped component to move and close, thereby clamping the wire harness. A stabilizing mechanism controls the center height of the wire harness to always remain uniform.

[0010] Preferably, the stabilization mechanism includes a hinge plate, the free end of which is connected to the outer wall of the V-shaped part by a pin, and an auxiliary plate, which is mounted on a movable seat. The hinge plate is slidably disposed on the auxiliary plate.

[0011] Preferably, the hinge plate is composed of two rectangular plates of the same length hinged together. The free ends of the two rectangular plates are respectively rotatably connected to the outer walls of the upper and lower V-shaped parts by pins, and the positions of the two connection points correspond, that is, the free ends of the two rectangular plates are exactly the same as the connection points between the upper and lower V-shaped parts, and are located at the same position on the outer wall of the V-shaped parts. Since the hinge plates are of the same length, the height of the connection point between the two hinge plates is the same as the height of the midpoint between the upper and lower V-shaped parts. In this way, the midpoint position of the wire harness clamped by the V-shaped parts can be determined, and a reference can be established.

[0012] Preferably, the laser module includes a laser head disposed in the trajectory module and a laser generator disposed on the top of the upper base, with the laser generator and the laser head connected by an optical fiber.

[0013] Preferably, the trajectory module includes an arc-shaped frame installed at the lower end of the support base. An arc-shaped sliding groove is formed on the arc-shaped frame. The center of the sliding groove is at the same height as the connection point between the two hinge plates, i.e., it coincides with the midpoint between the upper and lower V-shaped parts. A sliding frame is slidably arranged in the sliding groove. The laser head is slidably arranged in the sliding frame via a mounting pin. A spring is connected between the mounting pin and the sliding frame, and the spring has a reset function. A pushing component is slidably arranged on the support base, and a spring is connected between the pushing component and the support base, with the spring having a reset function. The pushing component is U-shaped and connected to the laser head via a connecting rod. A pressing component is slidably arranged on the arc-shaped frame, and a spring is connected between the pressing component and the arc-shaped frame, with the spring having a reset function. Forty-five-degree angle brackets are provided at both the front and rear ends of the pressing component. A 45-degree compression angle converts the horizontal input movement distance into the vertical output movement distance on a one-to-one basis (or vice versa, converts the vertical distance into the horizontal distance). The front end of the compression component is in compression fit with the mounting pin. The transmission component slides up and down on the support base. A spring four connects the transmission component and the support base, and the spring four acts as a reset mechanism. Both the upper and lower ends of the transmission component are provided with a 45-degree compression angle. The lower end of the transmission component is in compression fit with the rear end of the compression component. The trigger component is installed on the upper base through an elastic telescopic rod. The upper end of the trigger component is in compression fit with the upper end of the transmission component. The trigger lever is rotatably mounted on the upper base. The left and right lever arms are equal. The right end of the trigger lever is in compression fit with the trigger component. The stop mechanism restricts the position of the trigger lever.

[0014] Preferably, the stopping mechanism includes an incomplete gear, which is coaxially mounted on the rear end of the trigger lever; a first gear, which is rotatably mounted on a gear seat via a one-way bearing; the one-way bearing of the prior art allows free rotation in one direction and locks in the opposite direction; the first gear and the incomplete gear are intermittently meshed; the gear seat is slidably mounted on an L-shaped plate; the L-shaped plate is mounted on an upper base; a spring five is connected between the gear seat and the L-shaped plate, and the spring five plays a reset role; and a lower pressure plate, which is slidably mounted on the L-shaped plate; the lower pressure plate is an elastic and telescopic structure; the lower end of the lower pressure plate is provided with an inclined pressing surface; and the lower pressure plate is connected to the gear seat via a pulley assembly.

[0015] Preferably, the contouring module includes a mounting frame that slides vertically on a support seat, a spring six connected between the mounting frame and the support seat, the spring six serving a reset function, a contouring roller that is rotatably mounted at the lower end of the mounting frame, a rising block mounted on the top of the mounting frame, the rising block and the trigger lever being in a pressing fit, and a drive assembly that links the contouring roller and the pusher.

[0016] Preferably, the drive assembly includes a drive screw rotatably mounted on the mounting frame, the drive screw and the contour roller being connected by a pulley assembly for transmission, and a drive plate slidably mounted on the mounting frame. The drive plate and the drive screw are threaded together, and the drive plate and the pusher are pressed together.

[0017] In summary, the beneficial technical effects of this application are as follows:

[0018] The three-dimensional path planning-based line-beam laser etching system described in this invention, through a unique clamping method, ensures that the position of its central axis remains absolutely constant regardless of changes in the line beam diameter. The laser head's movement trajectory is based on this center, and its rotation center always coincides with the line beam center, fundamentally guaranteeing the stability of the etching geometry. Secondly, when encountering changes in line beam diameter during etching, the laser head can perform precise radial adjustments to compensate for focal length changes, while its core rotation center remains unchanged. Furthermore, the precise compensation mechanism of this application ensures that the radial adjustment action is only triggered when the laser head moves to the point of diameter change, avoiding misadjustment. Attached Figure Description

[0019] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the clamping module of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure between the hinge plate and the auxiliary plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure between the upper base, the support seat, and the push cylinder of the present invention;

[0023] Figure 5 This is a schematic diagram of the trajectory module of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure between the arc-shaped frame, the sliding frame, and the mounting pin of the present invention;

[0025] Figure 7 This is a schematic diagram of the stopping mechanism of the present invention;

[0026] Figure 8 This is a structural cross-sectional view of the stopping mechanism of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure between the incomplete gear and the first gear of the present invention;

[0028] Figure 10 This is a schematic diagram of the contouring module of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Clamping module; 3. Upper base; 4. Bearing seat; 5. Push cylinder; 6. Laser module; 7. Track module; 8. Contouring module; 21. Moving seat; 22. Threaded rod one; 23. V-shaped component; 24. Drive motor; 25. Threaded rod two; 26. Stabilizing mechanism; 261. Hinge plate; 262. Auxiliary plate; 61. Laser head; 62. Laser generating device; 71. Arc frame; 72. Sliding frame; 73. Mounting pin; 74. 75. Pushing component; 76. Pressing component; 77. Transmitting component; 78. Triggering component; 79. Triggering lever; 70. Stopping mechanism; 791. Incomplete gear; 792. First gear; 793. Gear seat; 794. L-shaped plate; 795. Lower pressure plate; 796. Pulley assembly; 797. Clearance groove; 81. Mounting bracket; 82. Contouring roller; 83. Rising block; 84. Drive assembly; 85. Unlocking component; 841. Drive screw; 842. Pulley assembly; 843. Drive plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0031] This application discloses a wire beam laser etching system based on three-dimensional path planning. By determining the center of the wire beam, intelligent radial compensation is performed when facing wire beams of different diameters without changing the rotation center.

[0032] Reference Figure 1 , Figure 4 As shown, the wire beam laser etching system based on three-dimensional path planning includes a worktable 1, on which a clamping module 2 is mounted to clamp and fix the wire beam with a constant center; an upper base 3, which is mounted on the worktable 1; a carrier seat 4 is slidably mounted on the upper base 3; a pushing cylinder 5 is mounted on the upper base 3 to push the carrier seat 4 to move; a laser module 6, which is mounted on the carrier seat 4 via a trajectory module 7, which guides and restricts the movement trajectory of the laser module 6; and a contouring module 8, which is located at the lower front of the carrier seat 4, which senses the external dimensions of the wire beam to drive the laser module 6 to automatically follow the three-dimensional surface contour of the wire beam during the etching process, always maintaining the optimal etching posture and focal length.

[0033] During actual etching, the wire harness to be etched is placed in the clamping module 2 for clamping and fixing. The clamping module 2 fixes the wire harness and its center position at the same time. Then, the push cylinder 5 pushes the carrier 4 to move from back to front. The contouring module 8 contacts the edge of the wire harness and moves along the edge of the wire harness. The contouring module 8 transmits its own movement to the laser module 6, so that the laser module 6 moves along the trajectory module 7, thereby etching around the wire harness. When the wire harness becomes thicker, the contouring module 8 senses the change in its diameter and adjusts the etching distance of the laser module 6 in cooperation with the trajectory module 7, so that it is at the etching distance with the wire harness. This application confirms the center position of the wire harness and adjusts the radial distance to make the etching focal length appropriate without changing the rotation center of the laser module 6.

[0034] Reference Figure 2 As shown, for wire harnesses of different diameters, in order to keep the center height of the clamped wire harness at a stable position, this application provides a clamping module 2. The clamping module 2 includes a movable seat 21, which is slidably mounted on the worktable 1. The movable seat 21 and the worktable 1 are connected by a threaded rod 22. The threaded rod 22 has two threads with different directions. By rotating the threaded rod 22, the movable seat 21 can be driven to close or open. A V-shaped part 23 is slidably mounted on the movable seat 21. The V-shaped part 23 is arranged symmetrically. A drive motor 24 is located inside the movable seat 21. A threaded rod 25 is connected to the output end of the drive motor 24. The threaded rod 25 and the V-shaped part 23 are threadedly connected. The threaded rod 25 has two threads with different directions. By rotating the threaded rod 25, the V-shaped part 23 can be moved to close or open. A stabilizing mechanism 26 controls the center height of the wire harness to always remain uniform.

[0035] Reference Figure 3 As shown, the stabilization mechanism 26 includes a hinge plate 261, the free end of which is connected to the outer wall of the V-shaped part 23 by a pin, and an auxiliary plate 262, which is mounted on the movable seat 21. The hinge plate 261 is slidably disposed on the auxiliary plate 262.

[0036] Reference Figure 3 As shown, the hinge plate 261 is composed of two rectangular plates of the same length hinged together. The free ends of the two rectangular plates are respectively rotatably connected to the outer walls of the upper and lower V-shaped parts 23 by pins, and the positions of the two connection points correspond, that is, the free ends of the two rectangular plates are exactly the same as the connection points between the upper and lower V-shaped parts 23, and are located in the same position on the outer wall of the V-shaped parts 23. Since the hinge plates 261 have the same length, the height of the connection point between the two hinge plates 261 is the same as the height of the midpoint between the upper and lower V-shaped parts 23. In this way, the midpoint position of the wire harness clamped by the V-shaped parts 23 can be determined, and a reference can be established.

[0037] During actual clamping, the wire harness is placed between the V-shaped parts 23. Then, the drive motor 24 drives the threaded rod 25 to rotate, and the V-shaped parts 23 close to clamp the wire harness. Under the action of the hinge plate 261, the center position height between the two V-shaped parts 23 arranged vertically remains unchanged. After clamping, the threaded rod 22 is turned. Under the action of the thread, the moving seat 21 separates, thereby straightening the wire harness in the clamping section and preventing it from bending and affecting the etching effect.

[0038] Reference Figure 4 As shown, the laser module 6 includes a laser head 61, which is disposed in the trajectory module 7, and a laser generator 62, which is disposed on the top of the upper base 3. The laser generator 62 and the laser head 61 are connected by an optical fiber.

[0039] In actual operation, the existing laser generator 62 generates laser light and transmits it to the laser head 61 via optical fiber for laser etching.

[0040] Reference Figure 5 , Figure 6As shown, the trajectory module 7 includes an arc-shaped frame 71, which is installed at the lower end of the support base 4. An arc-shaped sliding groove is formed on the arc-shaped frame 71. The center of the sliding groove is at the same height as the connection point between the two hinge plates 261, that is, it coincides with the midpoint between the upper and lower V-shaped parts 23. A sliding frame 72 is slidably arranged in the sliding groove. The laser head 61 is slidably arranged in the sliding frame 72 via a mounting pin 73. A spring 1 connects the mounting pin 73 and the sliding frame 72, and the spring 1 has a reset function. A pushing member 74 is slidably arranged on the support base 4, and a spring 2 connects the pushing member 74 and the support base 4, and the spring 2 has a reset function. The pushing member 74 is U-shaped and is connected to the laser head 61 via a connecting rod. A pressing member 75 is slidably arranged on the arc-shaped frame 71, and a spring 3 connects the pressing member 75 and the arc-shaped frame 71, and the spring 3 has a reset function. Both ends of the pressing member 75 are provided with… There is a 45-degree compression angle, which converts the horizontal input movement distance into the vertical output movement distance on a one-to-one basis (or vice versa, converts the vertical distance into the horizontal distance). The front end of the compression member 75 is in compression engagement with the mounting pin 73. The transmission member 76 is slidably mounted on the support base 4. A spring 4 connects the transmission member 76 and the support base 4, and the spring 4 serves as a reset function. Both the upper and lower ends of the transmission member 76 are provided with a 45-degree compression angle. The lower end of the transmission member 76 is in compression engagement with the rear end of the compression member 75. The trigger member 77 is mounted on the upper base 3 through an elastic telescopic rod. The trigger member 77 is in compression engagement with the upper end of the transmission member 76. The trigger lever 78 is rotatably mounted on the upper base 3. The left and right lever arms of the trigger lever 78 are equal. The right end of the trigger lever 78 is in compression engagement with the trigger member 77. The stop mechanism 79 restricts the position of the trigger lever 78.

[0041] During actual operation, the contouring module 8 drives the pusher 74 to move from left to right, pushing the laser head 61 and causing the sliding frame 72 to move along the sliding groove, thereby achieving circumferential etching of the wire harness. When the wire harness diameter increases, the left end of the trigger lever 78 is squeezed upward by the contouring module 8, while the right end of the trigger lever 78 descends. The trigger element 77 is squeezed downward by the right end of the trigger lever 78 (the lever arms on both sides of the trigger lever 78 are equal, so the downward distance is equal to the upward distance). Subsequently, as the carrier 4 moves, the transmission element 76 and the trigger element 77 gradually come into contact (the transmission element 76 and the trigger element 77 gradually come into contact). The travel distance between the triggering components 77 is equal to the distance between the laser head 61 and the contouring roller 82 in the front-back direction, thereby compensating for the distance difference between the laser head 61 and the contouring roller 82 (ensuring that the laser head 61 only performs radial adjustment when it reaches the position where the diameter changes). Then, the transmission component 76 squeezes the extrusion component 75, and the extrusion component 75 squeezes the mounting pin 73. The mounting pin 73 is squeezed and lifted (the lifting distance is the descent distance of the triggering component 77, i.e., the diameter change value of the wire harness). Then, the laser head 61 adjusts the distance radially, but its rotation center remains unchanged and is always consistent with the center of the wire harness.

[0042] Reference Figures 7-9 As shown, in order to lock the position of the trigger lever 78, this application provides a stop mechanism 79. The stop mechanism 79 includes an incomplete gear 791, which is coaxially mounted on the rear end of the trigger lever 78; a first gear 792, which is rotatably mounted on a gear seat 793 via a one-way bearing. The one-way bearing of the prior art allows free rotation in one direction and locks in the opposite direction. The first gear 792 and the incomplete gear 791 are intermittently meshed. The gear seat 793 is slidably mounted on an L-shaped plate 794, which is mounted on an upper base 3. A spring 5 is connected between the gear seat 793 and the L-shaped plate 794, which plays a reset role; and a lower pressure plate 795, which is slidably mounted on the L-shaped plate 794. The L-shaped plate 794 has a relief groove 797 corresponding to the position of the lower pressure plate 795. The lower pressure plate 795 is an elastic and telescopic structure. The lower end of the lower pressure plate 795 is provided with an inclined pressing surface. The lower pressure plate 795 is connected to the gear seat 793 via a pulley assembly 796.

[0043] When locking is actually performed, the first gear 792 and the incomplete gear 791 are not meshed in the initial state. When the trigger lever 78 is squeezed and rotated, the incomplete gear 791 rotates with the trigger lever 78. After the incomplete gear 791 rotates, it meshes with the first gear 792 and rotates together under the meshing action. The unidirectional rotating first gear 792 locks the position of the incomplete gear 791 to prevent it from resetting.

[0044] Reference Figure 7 , Figure 10As shown, the contouring module 8 includes a mounting frame 81, which is slidably mounted on the support seat 4. A spring 6 is connected between the mounting frame 81 and the support seat 4, and the spring 6 serves as a reset function. A contouring roller 82 is rotatably mounted at the lower end of the mounting frame 81. A rising block 83 is mounted on the top of the mounting frame 81, and the rising block 83 is in a pressing fit with the trigger lever 78. A drive assembly 84 links the contouring roller 82 and the pusher 74. An unlocking component 85 is mounted on the rising block 83, and the unlocking component 85 is in a pressing fit with the lower pressure plate 795.

[0045] Reference Figure 10 As shown, the drive assembly 84 includes a drive screw 841, which is rotatably mounted on the mounting frame 81. The drive screw 841 and the contour roller 82 are connected by a pulley set 842 for transmission. The drive plate 843 is slidably mounted on the mounting frame 81. The drive plate 843 and the drive screw 841 are threaded together, and the drive plate 843 and the pusher 74 are pressed together.

[0046] In actual operation, the contouring roller 82 rolls against the outer surface of the wire harness. Under the transmission action of the pulley group 842, it drives the screw 841 to rotate, thereby driving the drive plate 843 to move. The moving drive plate 843 presses the pusher 74 to move, thereby driving the laser head 61 to move. When the diameter of the wire harness changes, the contouring roller 82 is pressed, the mounting bracket 81 slides upward, and the rising block 83 follows the mounting bracket 81 to slide upward, thereby pressing the trigger lever 78 and triggering the radial adjustment of the laser head 61. At the same time, when the rising block 83 rises, the unlocking member 85 moves upward to press the lower pressure plate 795. 5 is compressed and contracted, and the unlocking piece 85 smoothly passes over the lower pressure plate 795. When the subsequent rising block 83 descends and resets, the unlocking piece 85 moves downward and presses the lower pressure plate 795. At this time, the lower pressure plate 795 cannot be compressed. The unlocking piece 85 presses the lower pressure plate 795 downward and makes it move downward together. Under the action of the pulley assembly 796, the gear seat 793 is pulled backward, so that the first gear 792 and the incomplete gear 791 are staggered in the front-back direction, realizing the unlocking of the incomplete gear 791. When the lower pressure plate 795 slides down into the relief groove 797, the lower pressure plate 795 and the unlocking piece 85 are separated.

[0047] The implementation principle of this embodiment is as follows:

[0048] Step 1: Placement and clamping: Place the wire harness to be etched into the V-shaped part 23, start the drive motor 24, and make the V-shaped part 23 close and clamp the wire harness.

[0049] Step 2: Straightening and centering: After clamping, turn the threaded rod 22 to separate the moving seat 21, straighten the wire harness, and determine the center height of the wire harness through the stabilizing mechanism 26;

[0050] Step 3: Feed Contact: Start the push cylinder 5 to push the bearing seat 4 forward as a whole, so that the contouring roller 82 of the contouring module 8 contacts the wire harness surface;

[0051] Step 4: Surround Etching: The contour roller 82 rolls along the wire harness, and the laser head 61 is driven by the drive component 84 to move along the arc trajectory of the trajectory module 7 to perform surround etching;

[0052] Step 5: Automatic Compensation: When the contouring roller 82 senses a change in the wire harness diameter, it will trigger the trigger lever 78, causing the laser head 61 to automatically adjust the radial distance to maintain a constant focal length;

[0053] Step 6: Etching complete, remove the wire harness.

[0054] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A line-beam laser etching system based on three-dimensional path planning, characterized in that, include: The workbench is equipped with a clamping module, which is used to clamp and fix the wire harness with a constant center. The upper base is mounted on the workbench, and a support seat is slidably mounted on the upper base. A push cylinder is mounted on the upper base to push the support seat to move. The laser module is mounted on the support via a trajectory module, which guides and limits the movement trajectory of the laser module. The contouring module is located at the front of the lower end of the carrier. The contouring module is used to sense the external dimensions of the wire harness so as to drive the laser module to automatically follow the three-dimensional surface contour of the wire harness during the etching process, and always maintain the best etching posture and focal length.

2. The wire-beam laser etching system based on three-dimensional path planning according to claim 1, characterized in that, The clamping module includes: The movable seat is slidably mounted on the worktable, and the movable seat and the worktable are connected by a threaded rod. The V-shaped component is slidably mounted on the movable base, and the V-shaped component is arranged symmetrically up and down; The drive motor is located inside the movable base. A threaded rod is connected to the output end of the drive motor. The threaded rod and the V-shaped part are threadedly engaged. The center height of the control harness of the stability maintenance agency is always kept uniform.

3. The line-beam laser etching system based on three-dimensional path planning according to claim 2, characterized in that, The stability maintenance agencies include: The hinge plate is connected to the outer wall of the V-shaped part by a pin at its free end; An auxiliary plate is mounted on a movable base, and a hinge plate is slidably mounted on the auxiliary plate.

4. The line-beam laser etching system based on three-dimensional path planning according to claim 3, characterized in that, The hinge plate is composed of two rectangular plates of the same length hinged together. The free ends of the two rectangular plates are respectively rotatably connected to the outer walls of the upper and lower V-shaped parts by pins, and the positions of the two connection points correspond.

5. The wire-beam laser etching system based on three-dimensional path planning according to claim 1, characterized in that, The laser module includes: The laser head is located within the trajectory module; The laser generator is located on top of the upper base, and the laser generator and the laser head are connected by optical fiber.

6. The line-beam laser etching system based on three-dimensional path planning according to claim 5, characterized in that, The trajectory module includes: An arc-shaped frame is installed at the lower end of the support base. An arc-shaped sliding groove is opened on the arc-shaped frame, and a sliding frame is slidably arranged in the sliding groove. The laser head is slidably arranged in the sliding frame by a mounting pin. A spring connects the mounting pin and the sliding frame. The pusher is slidably mounted on the support base, and a spring is connected between the pusher and the support base. The pusher is U-shaped and is connected to the laser head by a connecting rod. The extrusion component is slidably mounted on the arc-shaped frame. A spring is connected between the extrusion component and the arc-shaped frame. Both ends of the extrusion component are provided with a 45-degree extrusion angle. The front end of the extrusion component is in extrusion fit with the mounting pin. The transmission component is slidably mounted on the support base. A spring is connected between the transmission component and the support base. Both the upper and lower ends of the transmission component are provided with a 45-degree extrusion angle. The lower end of the transmission component and the rear end of the extrusion component are in extrusion fit. The trigger element is installed on the upper base via an elastic telescopic rod, and the upper ends of the trigger element and the transmission element are in a compression fit. The trigger lever is rotated on the upper base. The lever arms on the left and right sides are equal, and the right end of the trigger lever is in a squeezing fit with the trigger element. The stop mechanism restricts the position of the trigger lever.

7. The line-beam laser etching system based on three-dimensional path planning according to claim 6, characterized in that, The stopping mechanism includes: An incomplete gear, which is coaxially mounted at the rear end of the trigger lever; The first gear is rotatably mounted on the gear seat via a one-way bearing. The first gear meshes intermittently with the incomplete gear. The gear seat is slidably mounted on the L-shaped plate. The L-shaped plate is mounted on the upper base. A spring is connected between the gear seat and the L-shaped plate. The lower pressure plate is slidably mounted on the L-shaped plate. The L-shaped plate has a relief groove corresponding to the position of the lower pressure plate. The lower pressure plate is an elastic and telescopic structure. The lower end of the lower pressure plate is provided with an inclined pressing surface. The lower pressure plate is connected to the gear seat through a pulley assembly.

8. The line-beam laser etching system based on three-dimensional path planning according to claim 7, characterized in that, The contouring module includes: The mounting bracket is slidably mounted on the support base, and a spring connects the mounting bracket and the support base. The contour rollers rotate at the lower end of the mounting bracket; The rising block is mounted on top of the mounting bracket, and the rising block and the trigger lever are in a compression fit. The drive component links the contour roller with the pusher; The unlocking component is installed on the rising block, and the unlocking component and the lower pressure plate are in a compression fit.

9. The line-beam laser etching system based on three-dimensional path planning according to claim 8, characterized in that, The driving component includes: The drive screw is mounted on the mounting bracket and is connected to the contour roller via a pulley assembly. The drive plate is slidably mounted on the mounting bracket. The drive plate and the drive screw are threaded together, and the drive plate and the pusher are pressed together.

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