A spot analysis device applied to a laser stripping device

Abstract

The utility model discloses a kind of spot analysis devices applied to laser stripping equipment, including linear module, detection module and spot analyzer, the linear module is used to drive the detection module movement along a straight line direction, the straight line direction is parallel to the length direction of laser stripping spot, the detection module includes connecting seat, power meter and spot imaging module, the connecting line of the power meter and the spot imaging module is parallel to the straight line direction, the spot analyzer is connected with the power meter electrical signal connection of spot imaging module and power meter.The utility model's spot analysis device can objectively show the distribution state and intensity frequency of light spot through data, greatly improve the efficiency and accuracy of optical path system debugging.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, specifically to a spot analysis device used in laser stripping equipment. Background Technology

[0002] In laser stripping equipment, the initial laser spot is small (a square spot within 40mm on each side). The power and spot state can be confirmed by a power meter. After passing through the beam shaping system, the terminal spot length can reach a linear spot of more than 750mm. At this time, it is difficult to judge the energy distribution and beam quality of the entire spot. The beam quality can only be subjectively judged by experience through the laser action on the burning marks on the processing paper or by laser processing of the workpiece and the use of a power meter. Then, based on the judgment result, the optical path and the working surface of the moving machine are adjusted again.

[0003] Therefore, existing technologies rely on subjective judgment of beam quality based on experience, and can only judge the beam offline through processing results. This requires many repeated debugging sessions and experience support to confirm the final beam, resulting in a long debugging and verification cycle. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a spot analysis device for use in laser stripping equipment, which can objectively display the distribution state and intensity frequency of the spot through data, greatly improving the efficiency and accuracy of optical path system debugging.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A spot analysis device for use in laser ablation equipment includes a linear module, a detection module, and a spot analyzer. The linear module is used to drive the detection module to move along a straight line, the straight line being parallel to the length direction of the laser ablation spot. The detection module includes a connector, a power meter, and a spot imaging module. The line connecting the power meter and the spot imaging module is parallel to the straight line. The spot analyzer is electrically connected to the spot imaging module and the power meter.

[0007] As a further improvement to the above technical solution, a power meter mounting base is provided on the connecting seat, the power meter is mounted on the power meter mounting base, and the spot imaging system is mounted on the power meter mounting base through a lifting mechanism, the lifting mechanism being used to adjust the height of the spot imaging system.

[0008] As a further improvement to the above technical solution, the light spot imaging system includes an aperture, a laser attenuator, and a camera, which are arranged sequentially from top to bottom along the vertical direction.

[0009] As a further improvement to the above technical solution, the lifting mechanism includes a guide rail, a slider, and a driving component. The guide rail is fixed to the side wall of the power meter mounting base, the slider is connected to the guide rail, and the light spot imaging system is connected to the slider. The driving component is used to drive the slider to move up and down along the guide rail.

[0010] As a further improvement to the above technical solution, a mounting plate is provided on the slider, and the light spot imaging system is fixedly connected to the mounting plate.

[0011] As a further improvement to the above technical solution, the power meter mounting base and the connecting base are rotatably connected by a hinge structure. The power meter mounting base is provided with an adjustment structure, which is used to drive the power meter mounting base to rotate in order to adjust the included angle between the power meter mounting base and the connecting base.

[0012] As a further improvement to the above technical solution, the hinge structure includes an elastic connecting piece, one end of which is fixedly connected to the top of the power meter mounting base, and the other end of which is fixedly connected to the connecting base.

[0013] As a further improvement to the above technical solution, the adjustment structure includes a tightening screw, which is threaded onto the power meter mounting base, and the end of the tightening screw abuts against the connecting base. When the tightening screw is rotated to push the power meter mounting base away from the connecting base, the elastic connecting piece undergoes elastic deformation.

[0014] As a further improvement to the above technical solution, the adjustment mechanism also includes fastening screws. There are two fastening screws located on both sides of the fastening screw. The fastening screws are used to fix the power meter mounting base and the connecting base after the fastening screws adjust the included angle between the power meter mounting base and the connecting base.

[0015] The beneficial effects of this utility model are: by using a linear module to drive the detection module to move along the length of the light spot, the power meter and the light spot imaging module can detect the long light spot and display the distribution and intensity frequency of the light spot, which greatly improves the efficiency and accuracy of the optical path system debugging.

[0016] In addition, the entire spot model generated by the spot analyzer can be used to reverse verify the parallelism between the straight line module (the straight line module used by the laser stripping equipment to drive the worktable to move, and the detection module is installed on the worktable when detecting the spot) and the spot. Ensuring the parallelism between the worktable surface and the spot is an important prerequisite for the laser stripping equipment to process workpieces. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the light spot analysis device of this utility model;

[0019] Figure 2 This is a top view of the light spot analysis device of this utility model;

[0020] Figure 3 This is a schematic diagram of the spot analysis device of this utility model applied in a laser stripping device;

[0021] Figure 4 This is a schematic diagram illustrating the state of the light spot detected by the light spot analysis device of this utility model;

[0022] Figure 5 This is a frequency distribution histogram of the light spot intensity values ​​of the light spot analyzer of this utility model;

[0023] Figure 6 This is a schematic diagram showing the change in the coordinates of the light spot center of the light spot analyzer of this utility model;

[0024] Figure 7 This is a schematic diagram of the 2D splicing interface of the spot analyzer of this utility model;

[0025] Figure 8 This is a schematic diagram of the 3D effect interface of the light spot analyzer of this utility model.

[0026] Reference numerals: 1. Base plate; 2. Strip mounting hole; 3. Connecting plate; 4. Power meter mounting base; 5. Elastic connecting piece; 6. Fixing screw; 7. Tightening screw; 8. Fastening screw; 9. Power meter; 10. Lifting mechanism; 11. Mounting plate; 12. Aperture; 13. Laser attenuator; 14. Camera;

[0027] 100. Laser; 200. Beam shaping system; 300. Simulated spot; 400. Spot analysis device; 500. Worktable; 600. Linear module. Detailed Implementation

[0028] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0029] Reference Figure 1 and Figure 2 This utility model provides a spot analysis device 400 applied to a laser ablation device for detecting the quality of a strip-shaped spot and the laser of the laser ablation device.

[0030] The laser emitted by 100 is shaped into a strip-shaped spot by the beam shaping system 200 (see reference). Figure 1 The simulated light spot 300 in the image. The light spot analysis device 400 includes a linear module 600, a detection module, and a light spot analyzer. The linear module 600 is used to drive the detection module to move along a straight line, which is parallel to the length direction of the laser stripping light spot. That is, the detection module can move along the length direction of the light spot, thereby detecting various positions of the long light spot. Specifically, the detection module includes a connecting base, a power meter 9, and a light spot imaging module. The line connecting the power meter 9 and the light spot imaging module is parallel to the straight line (see reference). Figure 2 Thus, when the linear module 600 drives the detection module to move, the power meter 9 and the spot imaging module can continuously detect the strip-shaped light spot. The spot analyzer is electrically connected to the spot imaging module and the power meter 9, thereby analyzing the spot data detected by the power meter 9 and the spot imaging module to obtain the distribution state and intensity frequency of the light spot.

[0031] In a specific embodiment, the connecting seat includes a base plate 1 and a connecting plate 3. The base plate 1 is provided with a strip-shaped mounting hole 2. The base plate 1 can be installed on the worktable 500 of the laser stripping equipment through the strip-shaped mounting hole 2 (with bolts and other accessories). The connecting plate 3 is fixed on the base plate 1, and the top of the connecting plate 3 is lower than the base plate 1 to expose the strip-shaped mounting hole 2, which facilitates the loading and unloading of the base plate 1.

[0032] Furthermore, the power meter 9 is mounted on the power meter mounting base 4, and the power meter mounting base 4 is rotatably connected to the connecting base via a hinge structure. The power meter mounting base 4 is provided with an adjustment structure, which can drive the power meter mounting base 4 to rotate, thereby adjusting the angle between the power meter mounting base 4 and the connecting base, that is, adjusting the angle of the power meter 9 and the spot imaging module relative to the spot. This can be used to match the laser angle of different optical path systems.

[0033] In this embodiment, refer to Figure 1 The hinge structure includes an elastic connecting piece 5. One end of the elastic connecting piece 5 is connected to the top of the power meter mounting base 4 by a fixing screw 6, and the other end of the elastic connecting piece 5 is connected to the top plate of the connecting plate 3 by a fixing screw 6. Thus, when an external force drives the power meter mounting base 4 to move relative to the connecting plate 3, the elastic connecting piece 5 deforms. Since the elastic connecting piece 5 connects the tops of both, the power meter mounting base 4 and the connecting plate 3 rotate based on the elastic connecting piece 5, thereby adjusting the included angle between them.

[0034] The adjustment structure includes a fastening screw 8 and two tightening screws 7. The two tightening screws 7 are located on both sides of the fastening screw 8. The tightening screws 7 are threaded onto the power meter mounting base 4, and the ends of the tightening screws 7 abut against the connecting plate 3. When the tightening screws 7 are rotated inward, they can push the power meter mounting base 4 away from the connecting plate 3, thereby increasing the included angle between the power meter mounting base 4 and the connecting plate 3. At this time, the elastic connecting piece 5 undergoes elastic deformation. When the tightening screws 7 are rotated in the opposite direction, under the action of the elastic restoring force of the elastic connecting piece 5, the power meter mounting base 4 is driven to move closer to the connecting plate 3, thereby decreasing the included angle between the power meter mounting base 4 and the connecting plate 3. After the tightening screws 7 adjust the included angle between the power meter mounting base 4 and the connecting plate 3, the fastening screw 8 is tightened to fix the power meter mounting base 4 and the connecting plate 3.

[0035] In this embodiment, refer to Figure 1 The spot imaging system is mounted on the power meter mounting base 4 via a lifting mechanism 10. The lifting mechanism 10 is used to adjust the height of the spot imaging system, thereby adjusting the focus of the spot imaging system and ensuring the spot imaging system's detection effect on the spot.

[0036] In some embodiments, the lifting mechanism 10 includes a guide rail, a slider, and a driving component. The guide rail is fixed to the side wall of the power meter mounting base 4. The slider is connected to the guide rail and has a mounting plate 11. The light spot imaging system is fixedly connected to the mounting plate 11. The driving component is used to drive the slider to move up and down along the guide rail. Specifically, the driving component can use a cylinder, an electric telescopic rod, a linear motor, or other structures to automatically adjust the lifting height of the slider, or it can use a gear rack, a worm gear, or other structures to manually adjust the sliding lifting height block.

[0037] In this embodiment, the light spot imaging system includes an aperture 12, a laser attenuator 13, and a camera 14. The aperture 12, laser attenuator 13, and camera 14 are arranged vertically from top to bottom. The aperture 12 is a strip-shaped aperture 12. The size of the slit in the aperture 12 can determine the size of the light spot captured by the camera 14. The power attenuator can control the amount of laser power by controlling the position of the internal attenuator, thereby protecting the camera 14 and improving the camera 14's ability to test different power levels.

[0038] In order to save costs, refer to Figure 3 and Figure 4 The linear module 600 of this utility model uses a laser stripping device to drive the movement of the worktable 500. When detecting the light spot, the base plate 1 of the detection module is installed on the worktable 500 and then connected to the light spot analyzer through wires. The linear module 600 drives the worktable 500 to move, thereby driving the detection module to move to detect the strip light spot. The detection module moves along the length of the strip light spot once to obtain the corresponding light spot quality and power.

[0039] Understandably, moving the entire length of the light spot yields several data points. These data include the frequency distribution of the light spot intensity values. This frequency distribution provides a direct understanding of the concentration trend and dispersion of energy density distribution within the light spot, and can identify the location of high-energy regions and changes in energy gradients (such as...). Figure 5 As shown in the image, the changes in the center coordinates of the laser spot can be obtained through the display screen of the laser spot analyzer (the same applies below); this allows for the analysis of the laser spot's coordinates.

[0040] 100 stability (e.g.) Figure 6 (As shown); the obtained position data can be used to generate a two-dimensional cross-sectional view (such as...) through matching axis movement and splicing software. Figure 7 (as shown); in Figure 7 Based on the existing effect, adding the data of the lifting mechanism 10 can also create a 3D stereoscopic effect (such as...). Figure 8(As shown).

[0041] When the energy distribution of the entire laser spot obtained from the software in the laser spot analyzer shows a regular increase or decrease, it can also reflect that the parallelism between the motion axis and the laser spot needs to be adjusted, thereby verifying the attitude problem of the worktable 500 itself.

[0042] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A spot analysis device used in laser ablation equipment, characterized in that: The device includes a linear module, a detection module, and a spot analyzer. The linear module is used to drive the detection module to move along a straight line, which is parallel to the length direction of the laser stripping spot. The detection module includes a connector, a power meter, and a spot imaging module. The line connecting the power meter and the spot imaging module is parallel to the straight line. The spot analyzer is electrically connected to the spot imaging module and the power meter.

2. The spot analysis device according to claim 1, characterized in that: The connecting base is provided with a power meter mounting base, the power meter is mounted on the power meter mounting base, and the spot imaging system is mounted on the power meter mounting base through a lifting mechanism, the lifting mechanism being used to adjust the height of the spot imaging system.

3. The spot analysis device according to claim 2, characterized in that: The light spot imaging system includes an aperture, a laser attenuator, and a camera, which are arranged sequentially from top to bottom along the vertical direction.

4. The spot analysis device according to claim 2, characterized in that: The lifting mechanism includes a guide rail, a slider, and a driving component. The guide rail is fixed to the side wall of the power meter mounting base, the slider is connected to the guide rail, and the light spot imaging system is connected to the slider. The driving component is used to drive the slider to move up and down along the guide rail.

5. The spot analysis device according to claim 4, characterized in that: The slider is provided with a mounting plate, and the light spot imaging system is fixedly connected to the mounting plate.

6. The spot analysis device according to claim 2, characterized in that: The power meter mounting base and the connecting base are rotatably connected by a hinge structure. The power meter mounting base is provided with an adjustment structure, which is used to drive the power meter mounting base to rotate in order to adjust the included angle between the power meter mounting base and the connecting base.

7. The spot analysis device according to claim 6, characterized in that: The hinge structure includes an elastic connecting piece, one end of which is fixedly connected to the top of the power meter mounting base, and the other end of which is fixedly connected to the connecting base.

8. The spot analysis device according to claim 7, characterized in that: The adjustment structure includes a tightening screw, which is threaded onto the power meter mounting base, and the end of the tightening screw abuts against the connecting base. When the tightening screw is rotated to push the power meter mounting base away from the connecting base, the elastic connecting piece undergoes elastic deformation.

9. The spot analysis device according to claim 8, characterized in that: The adjustment mechanism also includes fastening screws, and there are two fastening screws located on both sides of the fastening screw. The fastening screws are used to fix the power meter mounting base and the connecting base after the angle between the power meter mounting base and the connecting base is adjusted by the fastening screw.

Images