Laser cleaning device with automatic focusing function and laser cleaning system
By introducing the automatic focus function in the laser cleaning device, the laser rangefinder and motor drive the focus ring and focus sleeve movement, the problem that the laser focus cannot be maintained on the complex surface workpiece is solved, and efficient laser cleaning effect is achieved.
Patent Information
- Application Number
- CN202421443556.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-21
AI Technical Summary
Existing laser cleaning technology is difficult to effectively clean workpieces on complex surfaces because the laser focus cannot be maintained on the surface of the workpiece at all times.
A laser cleaning device with automatic focus function is designed. The distance between the workpiece surface and the lens is detected through a laser rangefinder, and the focus ring is driven by a motor to rotate, and the spiral guide groove drives the focus sleeve to move axially, so as to realize zooming and keep the laser focus on the surface of the workpiece.
Efficient cleaning of workpieces on complex surfaces is achieved, ensuring that the laser focus is always maintained on the surface of the workpiece, thereby improving the cleaning effect.
Smart Images
Figure CN222957092U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of laser cleaning, and in particular to a laser cleaning device and a laser cleaning system with an automatic focusing function. Background Art
[0002] Laser cleaning technology is a technology that uses a high-power density pulsed laser beam to act on the surface of the workpiece, causing the dirt, oxides or coatings on the surface to evaporate or expand instantly and then separate, thereby cleaning the workpiece. Compared with traditional cleaning methods, laser cleaning technology has the advantages of good cleaning effect, high control accuracy, wide application range, low operating cost and no pollution to the environment. It has been widely used in the removal of oxides, sulfides and carbon deposits on metal surfaces, and has a broader application prospect.
[0003] Laser cleaning of surfaces generally requires a relatively high power density, so the laser needs to be focused on the workpiece surface. For workpieces with relatively flat surfaces, the distance between the laser head and the workpiece surface can be pre-set according to the laser focal length to achieve a better cleaning effect. However, when the workpiece surface is curved or there is a drop on the workpiece surface, the laser focus cannot always be maintained on the workpiece surface, resulting in a poor cleaning effect. Therefore, a laser cleaning device that can adjust the focal length in time is needed for cleaning workpieces with complex surfaces. Summary of the invention
[0004] The purpose of the present application is to solve at least one of the technical problems existing in the prior art, and to provide a laser cleaning device and a laser cleaning system with an automatic focusing function, which can automatically adjust the focal length to perform laser cleaning on workpieces with complex surfaces.
[0005] According to the first aspect of the present application, there is provided a laser cleaning device with an automatic focusing function, comprising:
[0006] A fixed sleeve, on which a motor is mounted, and on the output shaft of the motor a driving gear is mounted;
[0007] A focus ring, the focus ring is rotatably connected to the fixed sleeve, a rack is arranged around the focus ring, the driving gear is meshed with the rack, and a spiral guide groove is also provided on the focus ring;
[0008] A focusing sleeve, a lens is installed at the end of the focusing sleeve, the focusing sleeve is slidably connected to the fixed sleeve and can move along the axial direction of the fixed sleeve, and a guide column is arranged on the side of the focusing sleeve, and the guide column moves in the guide groove;
[0009] A laser rangefinder for detecting the distance between the surface of a workpiece and the lens, and the laser rangefinder is electrically connected to the motor;
[0010] Wherein, when the focusing ring rotates, a force can be applied to the focusing sleeve through the guiding groove, so that the focusing sleeve moves along the axial direction of the fixed sleeve.
[0011] According to the first aspect embodiment of the present application, further, an annular first limiting groove is formed on the outer side surface of the fixed sleeve, a first limiting post is arranged on the inner wall of the focusing ring, and the first limiting post moves in the first limiting groove.
[0012] According to the first aspect embodiment of the present application, further, a second limiting groove arranged along the axial direction of the fixed sleeve is formed on the outer side surface of the focusing sleeve, a second limiting post is arranged on the inner wall of the fixed sleeve, and the second limiting post moves in the second limiting groove.
[0013] According to the first aspect embodiment of the present application, further, a motor fixing bracket is further installed on the fixed sleeve, and the motor is connected to the fixed sleeve through the motor fixing bracket.
[0014] According to the first aspect embodiment of the present application, further, a fixing clip for clamping the motor is arranged on the motor fixing bracket, and the motor can be axially adjusted within the fixing clip.
[0015] According to the first aspect embodiment of the present application, further, the laser cleaning device with an automatic focusing function further includes a distance sensor for detecting the telescopic distance of the focusing sleeve, and the distance sensor is electrically connected to the motor.
[0016] According to the first aspect embodiment of the present application, further, the laser cleaning device with an automatic focusing function further includes a housing, an inner cavity for accommodating the fixed sleeve, the focusing ring and the focusing sleeve is arranged inside the housing, and the laser rangefinder is installed outside the housing.
[0017] According to the second aspect embodiment of the present application, a laser cleaning system is provided, including a manipulator and the above-mentioned laser cleaning device with an automatic focusing function, and the laser cleaning device with an automatic focusing function is installed at the end of the manipulator.
[0018] According to the second aspect embodiment of the present application, further, a telescopic mechanism is arranged at the end of the manipulator, and the telescopic mechanism drives the laser cleaning device with an automatic focusing function to perform axial displacement.
[0019] According to the embodiments of the second aspect of the present application, further, the laser cleaning system further includes a chassis, and the manipulator can extend the laser cleaning device with an automatic focusing function into the chassis and complete the laser cleaning work in the chassis.
[0020] The beneficial effects of the embodiments of the present application at least include: The present application uses a laser rangefinder to detect the distance between the surface of the workpiece and the lens, and then drives the focusing ring to rotate through a motor. The spiral guiding groove further drives the focusing sleeve to move axially, thereby realizing zooming and keeping the focus of the laser on the surface of the workpiece. Description of the Drawings
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present application, rather than all the embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.
[0022] Figure 1 is the disassembly diagram of the laser cleaning device with an automatic focusing function according to the embodiments of the first aspect of the present application;
[0023] Figure 2 is Figure 1 the cross-sectional view taken along line A-A in
[0024] Figure 3 is the three-dimensional view of the housing 600 of the laser cleaning device with an automatic focusing function according to the embodiments of the first aspect of the present application;
[0025] Figure 4 is the three-dimensional view of the laser cleaning system according to the embodiments of the second aspect of the present application.
[0026] Reference Numerals: 100 - fixed sleeve, 110 - motor, 111 - driving gear, 120 - first limiting groove, 130 - second limiting post, 140 - motor fixing bracket, 141 - fixing clip, 200 - focusing ring, 210 - rack, 220 - guiding groove, 230 - first limiting post, 300 - focusing sleeve, 310 - lens, 320 - guiding post, 330 - second limiting groove, 400 - laser rangefinder, 500 - distance sensor, 600 - housing, 700 - manipulator, 710 - telescopic mechanism, 800 - chassis. Detailed Embodiments
[0027] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.
[0028] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0029] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0030] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.
[0031] Laser cleaning technology is a technology that uses a high-power density pulsed laser beam to act on the surface of the workpiece, causing the dirt, oxides or coatings on the surface to evaporate or expand instantly and then separate, thereby cleaning the workpiece. Compared with traditional cleaning methods, laser cleaning technology has the advantages of good cleaning effect, high control accuracy, wide application range, low operating cost and no pollution to the environment. It has been widely used in the removal of oxides, sulfides and carbon deposits on metal surfaces, and has a broader application prospect.
[0032] Laser cleaning of surfaces generally requires a relatively high power density, so the laser needs to be focused on the workpiece surface. For workpieces with relatively flat surfaces, the distance between the laser head and the workpiece surface can be pre-set according to the laser focal length to achieve a better cleaning effect. However, when the workpiece surface is curved or there is a drop on the workpiece surface, the laser focus cannot always be maintained on the workpiece surface, resulting in a poor cleaning effect. Therefore, a laser cleaning device that can adjust the focal length in time is needed for cleaning workpieces with complex surfaces.
[0033] In response to this, the present application proposes a laser cleaning device and a laser cleaning system with an automatic focusing function, which can detect the distance between the workpiece surface and the lens 310 through the laser rangefinder 400, and then drive the focusing ring 200 to rotate through the motor 110. The spiral guide groove 220 further drives the focusing sleeve 300 to move axially, thereby realizing zooming and keeping the focus of the laser on the workpiece surface.
[0034] Referring to Figure 1 , the laser cleaning device with an automatic focusing function in the first aspect embodiment of the present application includes a fixed sleeve 100, a focusing ring 200, a focusing sleeve 300, and a laser rangefinder 400. The fixed sleeve 100 is used for fixing and connecting to external equipment. The focusing ring 200 is used to drive the focusing sleeve 300 to move to change the focal length. The focusing sleeve 300 is used to complete the focusing of the laser. The laser rangefinder 400 is used to detect the distance between the workpiece and the lens 310 for fine adjustment of the focal length.
[0035] Specifically, a motor 110 is installed on the fixed sleeve 100, and a driving gear 111 is installed on the output shaft of the motor 110 for driving the focusing ring 200.
[0036] The focusing ring 200 is rotatably connected to the fixed sleeve 100, and a rack 210 is arranged around it. The driving gear 111 meshes with the rack 210, so that when the driving gear 111 rotates, it can drive the focusing ring 200 to rotate. It should be noted that a spiral guide groove 220 is also provided on the focusing ring 200 for driving the focusing sleeve 300 to move.
[0037] A lens 310 is installed at the end of the focusing sleeve 300, and the laser passing through it is focused by the lens 310. The lens 310 is specifically installed on the focusing sleeve 300 in a detachable connection manner, and different focusing effects can be achieved by replacing different lenses 310. The focusing sleeve 300 is slidably connected to the fixed sleeve 100 and can move along the axial direction of the fixed sleeve 100. It should be noted that a guide post 320 is provided on the side of the focusing sleeve 300, and the guide post 320 moves in the guide groove 220. Thus, when the focusing ring 200 rotates, the spiral guide groove 220 rotates accordingly, and the guide post 320 contacts the inner wall of the guide groove 220 and receives an axial force, driving the focusing sleeve 300 to displace along the axial direction of the fixed sleeve 100 to complete the adjustment of the focal length.
[0038] The laser rangefinder 400 is electrically connected to the motor 110. Thus, after the laser rangefinder 400 detects the distance between the workpiece surface and the lens 310, it can guide the motor 110 to perform corresponding actions to adjust the focal length of the focusing sleeve 300 in real time.
[0039] Further, an annular first limiting groove 120 is formed on the outer side surface of the fixed sleeve 100, and a first limiting post 230 is arranged on the inner wall of the focusing ring 200. The first limiting post 230 moves in the first limiting groove 120. Thus, through the cooperation of the first limiting post 230 and the first limiting groove 120, the rotation direction of the focusing ring 200 can be restricted and the focusing ring 200 can be prevented from axially displacing relative to the fixed sleeve 100.
[0040] Further, a second limiting groove 330 arranged along the axial direction of the fixed sleeve 100 is formed on the outer side surface of the focusing sleeve 300. Referring to Figure 2 , a second limiting post 130 is arranged on the inner wall of the fixed sleeve 100. The second limiting post 130 moves in the second limiting groove 330. Thus, through the cooperation of the second limiting post 130 and the second limiting groove 330, the sliding direction of the focusing sleeve 300 can be restricted and the focusing sleeve 300 can be prevented from rotating relative to the fixed sleeve 100.
[0041] Further, a motor fixing bracket 140 is also installed on the fixed sleeve 100. The motor 110 is connected to the fixed sleeve 100 through the motor fixing bracket 140. The model of the motor 110 can be replaced to change the output torque and speed of the motor, so as to meet the requirements of different application scenarios.
[0042] Further, a fixing clip 141 for clamping the motor 110 is arranged on the motor fixing bracket 140. The motor 110 can be axially adjusted within the fixing clip 141, so that the driving gear 111 can better mesh with the rack 210, reducing the misalignment between the two.
[0043] Further, the laser cleaning device with an automatic focusing function further includes a distance sensor 500. The distance sensor 500 is used to detect the telescopic distance of the focusing sleeve 300. The distance sensor 500 is electrically connected to the motor 110, so as to perform closed-loop control on the telescopic distance of the focusing sleeve 300, improve the fineness and accuracy of control, and prevent the movement of the focusing sleeve 300 from exceeding the stroke. The distance sensor 500 can specifically adopt an infrared distance sensor, a contact distance sensor or a photoelectric gate distance sensor, or other sensor types that can achieve the same technical effect, which will not be elaborated here.
[0044] Further, referring to Figure 3 , the laser cleaning device with an automatic focusing function further includes a housing 600. An inner cavity for accommodating the fixed sleeve 100, the focusing ring 200 and the focusing sleeve 300 is arranged inside the housing 600, which plays a protective role for the three. The laser is emitted from the end of the housing 600. The laser rangefinder 400 is installed on the outer side of the housing 600, which is convenient for the laser rangefinder 400 to perform distance detection.
[0045] Referring toFigure 4 In the second aspect of the present application, an embodiment of a laser cleaning system includes a manipulator 700 and a laser cleaning device with an automatic focusing function. The laser cleaning device with an automatic focusing function is installed at the end of the manipulator 700 and is driven by the manipulator 700 to complete the laser cleaning of the workpiece surface. In this embodiment, the manipulator 700 is a three-axis manipulator, whose base can rotate and is provided with two mutually rotatable robotic arms. It is easy to understand that a manipulator 700 with more degrees of freedom can also be used to complete more complex laser cleaning operations.
[0046] Further, a telescopic mechanism 710 is provided at the end of the manipulator 700. The telescopic mechanism 710 drives the laser cleaning device with an automatic focusing function to perform an axial displacement, thereby assisting in completing the adjustment of the focal length.
[0047] Further, the laser cleaning system of the present application further includes a chassis 800. The manipulator 700 can extend the laser cleaning device with an automatic focusing function into the chassis 800 and complete the laser cleaning work inside the chassis 800, reducing the influence of the outside on the laser cleaning work and reducing the influence of the laser cleaning work on the outside.
[0048] Further, a control console is provided on the outside of the chassis 800. Both the manipulator 700 and the laser cleaning device with an automatic focusing function are electrically connected to the control console. A human-machine interaction device is provided on the control console to meet the human-machine interaction requirements, and the user can control the laser cleaning system through the control console.
[0049] The above is a specific description of the preferred embodiments of the present application. However, the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent variations or substitutions without departing from the spirit of the present application, and these equivalent variations or substitutions are all included within the scope defined by the claims of the present application.
Claims
1. A laser cleaning device with automatic focusing function, characterized in that: include: A fixed sleeve, on which a motor is mounted, and on the output shaft of the motor a driving gear is mounted; A focus ring, the focus ring is rotatably connected to the fixed sleeve, a rack is arranged around the focus ring, the driving gear is meshed with the rack, and a spiral guide groove is also provided on the focus ring; A focusing sleeve, a lens is installed at the end of the focusing sleeve, the focusing sleeve is slidably connected to the fixed sleeve and can move along the axial direction of the fixed sleeve, and a guide column is arranged on the side of the focusing sleeve, and the guide column moves in the guide groove; A laser rangefinder, the laser rangefinder is used to detect the distance between the workpiece surface and the lens, and the laser rangefinder is electrically connected to the motor; The rotation of the focus ring can apply a force to the focusing sleeve through the guide groove, so that the focusing sleeve moves along the axial direction of the fixed sleeve.
2. The laser cleaning device with automatic focusing function according to claim 1, characterized in that: An annular first limiting groove is formed on the outer side surface of the fixing sleeve, and a first limiting column is provided on the inner wall of the focusing ring. The first limiting column moves in the first limiting groove.
3. The laser cleaning device with automatic focusing function according to claim 1, characterized in that: A second limiting groove arranged along the axial direction of the fixing sleeve is formed on the outer side surface of the focusing sleeve, and a second limiting column is arranged on the inner wall of the fixing sleeve. The second limiting column moves in the second limiting groove.
4. The laser cleaning device with automatic focusing function according to claim 1, characterized in that: A motor fixing frame is also installed on the fixing sleeve, and the motor is connected to the fixing sleeve through the motor fixing frame.
5. The laser cleaning device with automatic focusing function according to claim 4, characterized in that: The motor fixing frame is provided with a fixing clamp for clamping the motor, and the motor can be axially adjusted in the fixing clamp.
6. The laser cleaning device with automatic focusing function according to claim 1, characterized in that: The laser cleaning device with automatic focusing function also includes a distance sensor, which is used to detect the telescopic distance of the focusing sleeve, and the distance sensor is electrically connected to the motor.
7. The laser cleaning device with automatic focusing function according to any one of claims 1 to 6, characterized in that: The laser cleaning device with automatic focusing function also includes a shell, an inner cavity for accommodating the fixed sleeve, the focusing ring and the focusing sleeve is arranged inside the shell, and the laser rangefinder is installed on the outer side of the shell.
8. A laser cleaning system, characterized in that: It comprises a robot and a laser cleaning device with automatic focusing function as described in any one of claims 1 to 7, wherein the laser cleaning device with automatic focusing function is installed at the end of the robot.
9. The laser cleaning system according to claim 8, characterized in that: A telescopic mechanism is provided at the end of the manipulator, and the telescopic mechanism drives the laser cleaning device with automatic focusing function to perform axial displacement.
10. The laser cleaning system according to claim 8, characterized in that: The laser cleaning system also includes a chassis, and the manipulator can extend the laser cleaning device with automatic focusing function into the chassis and complete the laser cleaning work in the chassis.