Laser cleaning head

Abstract

The utility model belongs to the technical field of laser cleaning, and provides a laser cleaning head, which comprises a laser output head, a laser cleaning head and a laser cleaning head, the light beam shaping module is used for changing a laser light path to form a specified cleaning pattern, and the light beam shaping module is mounted at the output end of the laser output head; and the visual module is used for accurately positioning the pattern before cleaning and detecting the cleaning cleanliness quality of the pattern after cleaning, the visual module is installed on one side of the light beam shaping module, and the visual module is electrically connected with the light beam shaping module. The laser cleaning head integrates functional modules of visual positioning, cleaning quality detection and the like, has high stability and operation precision, and can be well suitable for industrial automatic batch production. Wherein the beam shaping module is also integrated with a temperature monitoring module, so that the normal working temperature of the module can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of laser cleaning technology, and specifically relates to a laser cleaning head. Background Technology

[0002] Laser cleaning is a green and environmentally friendly surface treatment technology. Its mechanism is that after the contaminants absorb laser energy, they are eventually peeled off from the substrate surface through vaporization, vibration, thermal expansion, or ablation, thereby achieving the purpose of cleaning.

[0003] Currently, laser cleaning is increasingly being used in high-end manufacturing sectors, such as new energy vehicles, power batteries, aircraft blades, precision instruments, rail transportation, and shipbuilding. Under the dual-carbon strategy, laser cleaning technology, which emphasizes green and environmentally friendly concepts, is bound to become a major trend in industrial cleaning.

[0004] Currently, most laser cleaning heads used in high-end manufacturing are modified from handheld cleaning heads or marking heads. These often suffer from poor laser head operation accuracy, poor long-term working stability, and high failure rate, which fails to meet the high stability and high quality requirements of industrial automated mass production. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a laser cleaning head that integrates visual positioning and cleaning quality detection modules, exhibiting high stability and operational accuracy, and is well-suited for industrial automated mass production.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a laser cleaning head, comprising:

[0007] Laser output head, used to generate laser light;

[0008] A beam shaping module is used to change the laser beam path to form a specified cleaning pattern. The beam shaping module is installed at the output end of the laser output head.

[0009] A vision module is used for precise positioning of the pattern before cleaning and for detecting the cleanliness quality of the pattern after cleaning. The vision module is installed on one side of the beam shaping module and is electrically connected to the beam shaping module.

[0010] As a preferred option, a rangefinder is also included;

[0011] The rangefinder is mounted on one side of the beam shaping module.

[0012] As a preferred option, a dust collection module is also included;

[0013] The dust extraction module is installed on one side of the beam shaping module.

[0014] As a preferred option, an air knife is also included;

[0015] The air knife is mounted on one side of the beam shaping module.

[0016] As a preferred option, an auxiliary light source is also included;

[0017] The auxiliary light source is installed on one side of the vision module.

[0018] Preferably, the beam shaping module integrates a temperature monitoring module.

[0019] Preferably, a connecting plate is fixed to one side of the beam shaping module, and the connecting plate is used to fix it to the motion actuator.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. This utility model provides a laser cleaning head, which includes a beam shaping module for changing the laser path to form a specified cleaning pattern; and a vision module for both precise positioning of the pattern before cleaning and detection of the cleanliness quality of the pattern after cleaning. In other words, this laser cleaning head integrates visual positioning and cleaning quality detection modules, exhibiting high stability and operational accuracy, and is well-suited for industrial automated mass production.

[0022] 2. The laser cleaning head provided by this utility model has a beam shaping module that integrates a temperature monitoring module to ensure that the lens temperature is normal.

[0023] 3. The laser cleaning head provided by this utility model has an air knife that can prevent the emission of smoke and dust during the cleaning process, which could cause lens contamination.

[0024] 4. The laser cleaning head provided by this utility model includes a dust collection module that can collect the smoke and dust generated during the cleaning process. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a laser cleaning head provided for an embodiment of this utility model;

[0026] Figure 2 A three-dimensional structural diagram of a laser cleaning head provided for an embodiment of this utility model;

[0027] Figure 3 A three-dimensional structural diagram of a laser cleaning head provided for an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of a beam shaping module for a laser cleaning head, provided as an embodiment of the present invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Laser output head; 2. Beam shaping module; 3. Vision module; 4. Rangefinder; 5. Dust collection module; 6. Air knife; 7. Auxiliary light source; 8. Connecting plate; 201. Field lens; 202. Lens surface; 203. Housing. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments, so that those skilled in the art can more clearly understand the present invention.

[0032] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed structures. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0033] See Figure 1 This embodiment provides a laser cleaning head, comprising:

[0034] Laser output head 1 is used to generate laser light. The laser output head is part of the laser (laser source) and is integrated into the laser cleaning head to realize laser processing operations.

[0035] Beam shaping module 2 is installed at the output end of laser output head 1 and is used to change the laser beam path generated by laser output head 1 to form a specified cleaning pattern.

[0036] Vision module 3 is installed on one side of beam shaping module 2 and is electrically connected to beam shaping module 2. Vision module 3 is used for precise positioning of the pattern before cleaning and for detecting the cleanliness quality of the pattern after cleaning, and transmits the signal to beam shaping module 2.

[0037] Among them, the application of beam shaping module 2 can significantly improve cleaning efficiency. By precisely controlling the beam shape and intensity distribution, it can achieve uniform cleaning of objects with complex shapes and uneven surfaces, while reducing the waste of laser energy.

[0038] The technical principle of vision module 3 is based on machine vision technology. It acquires image data of the object to be cleaned through a front pre-processing camera and a rear feedback camera. This data is transmitted to the computing module for processing and analysis to determine the cleaning path and laser parameters.

[0039] In other words, the laser cleaning head provided in this embodiment integrates functional modules such as visual positioning and cleaning quality detection, and has high stability and operational accuracy, making it well-suited for industrial automated mass production.

[0040] To improve the overall performance of beam shaping module 2 and vision module 3, see [link / reference] Figure 4 The beam shaping module 2 includes a housing 203, a functional module and a field lens 201 located within the housing 203. The housing 203 is arranged horizontally, with the functional module and field lens 201 located on the right side inside the housing 203, and the field lens 201 facing left, i.e., emitting laser light to the left. To change the direction of the laser light emitted by the field lens 201, a lens surface 202 is provided on the left side inside the housing 203. The lens surface 202 is a 45° semi-transparent and semi-reflective mirror, so that the laser light emitted by the field lens 201, after passing through the lens surface 202, is emitted downwards. To ensure smooth laser emission, the bottom of the housing 203 is open, and this opening is located below the lens surface 202.

[0041] Meanwhile, the vision module 3 is mounted on the housing 203 and is located above the lens surface 202. Of course, the top of the housing 203 must have an opening corresponding to the position of the lens surface 202, and the lens of the vision module 3 faces downwards, so that the vision module 3 can capture the image information below the housing 203 through the lens surface 202.

[0042] Understandably, the visual module 3 is mounted on the housing 203, which on the one hand improves the overall integrity of the beam shaping module 2 and the visual module 3, and also reduces its footprint; on the other hand, the shooting range of the visual module 3 can be increased through the lens surface 202.

[0043] As needed, the laser cleaning head provided in this embodiment also includes a rangefinder 4; the rangefinder 4 is installed on one side of the beam shaping module 2. For details, see [link to documentation]. Figure 1 The rangefinder 4 is mounted on the side wall of the housing 203 and is used to adjust the working distance in the height direction before cleaning.

[0044] As needed, the laser cleaning head provided in this embodiment also includes a dust collection module 5; the dust collection module 5 is installed on one side of the beam shaping module 2. For details, see [link to documentation]. Figure 2 The dust collection module 5 is mounted on the side wall of the housing 203. The dust collection port of the dust collection module 5 extends to the bottom of the housing 203 to collect the dust generated during the cleaning process.

[0045] As needed, the laser cleaning head provided in this embodiment also includes an air knife 6; the air knife 6 is installed on one side of the beam shaping module 2. For details, see [link to documentation]. Figure 4Two air knives 6 are installed on the upper and lower sides of the field lens 201, respectively. The upper air knife 6 is used to create a compressed air atmosphere, while the lower air knife 6 blows downwards at an angle. It can be understood that these two air knives 6 can form an air curtain to prevent the emission of smoke and dust during the cleaning process, which could contaminate the field lens 201.

[0046] As needed, the laser cleaning head provided in this embodiment also includes an auxiliary light source 7; the auxiliary light source 7 is installed on one side of the vision module 3. For details, see... Figure 3 Four auxiliary light sources 7 are installed below the housing 203, and are located around the bottom opening of the housing 203. The four auxiliary light sources 7 work together with the vision module 3 to improve shooting accuracy.

[0047] To enable real-time monitoring of the field lens 201's temperature, in this embodiment, the beam shaping module 2 integrates a temperature monitoring module. This module detects the temperature of the field lens 201 in real time, ensuring the module operates at a normal temperature. If necessary, the beam shaping module 2 may also integrate an alarm module to issue an alarm signal when an abnormal temperature occurs.

[0048] A connecting plate 8 is fixed to one side of the beam shaping module 2. The connecting plate 8 is used for fixed connection with the motion actuator. For details, please refer again. Figure 2 The connecting plate 8 is fixed to the housing 203. The connecting plate 8 is provided with mounting screw holes, through which it can be fixedly connected to the motion actuator.

[0049] It should be noted that the motion actuator is existing technology, such as a three-axis mobile device like a robotic arm. Furthermore, the motion actuator can be electrically connected to the rangefinder 4, and move in the Z-axis based on feedback information from the rangefinder 4.

[0050] In summary, the laser cleaning head provided in this embodiment can include the following process when applied:

[0051] 1) The motion actuator moves the laser cleaning head above the workpiece cleaning area;

[0052] 2) The rangefinder 4 measures the distance to the workpiece surface and triggers the motion actuator to drive the laser cleaning head to move precisely to the correct working distance in the height direction (Z direction);

[0053] 3) Before the automatic cleaning begins, the vision module 3 first uses a vision algorithm to compensate for the difference between the measured value and the standard value (records the values ​​of standard position X, Y, and angle to form a specified cleaning pattern). Then, the beam shaping module 2 is triggered to emit a laser to perform precise positioning cleaning.

[0054] 4) During the automatic cleaning process: The temperature monitoring module built into the beam shaping module 2 monitors in real time whether the lens temperature exceeds the preset threshold and whether it is working properly. If it is not working properly, it will issue an alarm signal. At the same time, the air knife 6 blows air to form an air curtain to protect the lens from contamination. The dust collection module 5 collects the smoke and dust generated during the cleaning process through the dust collection port.

[0055] 5) After automatic cleaning is completed, vision module 3 starts working again: First, the camera takes a picture and compares it with the standard template built into the vision system (based on the cleaned workpiece, the vision software learns and stores it into a standard template, and the template score is set to 100 points at this time) and analyzes it, and judges whether the cleaning effect is qualified by scoring; if the detection result is qualified, the next automatic operation process is triggered; if it is unqualified, the rework operation process is triggered until the cleaning effect requirements are met.

[0056] The mechanisms, components, and parts in this invention that are not specifically described are all existing structures in the prior art and can be purchased directly from the market.

[0057] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0058] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A laser cleaning head, characterized by, It includes: laser output head (1) for the generation of laser; beam shaping module (2) for changing the laser beam path, forming a specified cleaning pattern, the beam shaping module (2) is installed at the output end of the laser output head (1); vision module (3) for accurate positioning of the pattern before cleaning and quality detection of the pattern cleaning after cleaning, the vision module (3) is installed on one side of the beam shaping module (2), and the vision module (3) is electrically connected with the beam shaping module (2); The beam shaping module (2) includes a shell (203), a functional module and a field lens (201), the functional module and the field lens (201) are located inside the right side of the shell (203), the field lens (201) faces the left side, the left side of the inside of the shell (203) is provided with a lens face (202), the lens face (202) is a 45° half transparent half mirror, the bottom end of the shell (203) is provided with an opening, and the opening is located below the lens face (202); The vision module (3) is installed on the shell (203), and the vision module (3) is located above the lens face (202), and the shell (203) is provided with an opening at the position corresponding to the lens face (202) at the top end; The laser cleaning head further comprises two air knives (6), and the two air knives (6) are respectively installed on the upper and lower sides of the field lens (201).

2. The laser cleaning head of claim 1, wherein The laser cleaning head further comprises a range finder (4); The range finder (4) is installed on one side of the beam shaping module (2).

3. The laser cleaning head of claim 1, wherein The laser cleaning head further comprises a dust suction module (5); The dust suction module (5) is installed on one side of the beam shaping module (2).

4. The laser cleaning head of claim 1, wherein The laser cleaning head further comprises an air knife (6); The air knife (6) is installed on one side of the beam shaping module (2).

5. The laser cleaning head of claim 1, wherein The laser cleaning head further comprises an auxiliary light source (7); The auxiliary light source (7) is installed on one side of the vision module (3).

6. The laser cleaning head of claim 1, wherein The beam shaping module (2) is integrated with a temperature monitoring module.

7. The laser cleaning head of claim 1, wherein One side of the beam shaping module (2) is fixedly connected with a connecting plate (8), and the connecting plate (8) is used for fixed connection with a motion executing mechanism.

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