A laser cleaning head and a laser cleaning device

Abstract

The present disclosure provides a laser cleaning head and a laser cleaning device, wherein the laser cleaning head comprises: a shell having a first shell wall and a second shell wall, an air cavity is formed in the interior of the shell, the first shell wall is provided with an air inlet, the second shell wall is provided with an air outlet and a light outlet, and the air inlet is communicated with the air outlet through the air cavity; a focusing lens is arranged on the shell and covers the light outlet; a power unit is arranged in the air cavity, and the power unit is used for driving the gas in the air cavity to flow to the air outlet; a filter is arranged on the shell and covers the air inlet, and the filter is used for filtering the airflow flowing through the air inlet; and the air outlet direction of the air outlet intersects with the axial direction of the focusing lens.

Description

Technical Field

[0001] This disclosure relates to the field of laser cleaning technology, and in particular to a laser cleaning head and a laser cleaning device. Background Technology

[0002] Laser cleaning equipment typically includes a laser source and a laser cleaning head. The laser emitted by the laser source is directed onto the workpiece through the laser cleaning head to remove contaminants from the workpiece surface. To prevent the exposed lenses of the laser cleaning head from being contaminated or damaged by splashed contaminants, laser cleaning equipment often requires an additional air source during use. This airflow from the air source is used to blow away the splashed contaminants, making laser cleaning equipment unsuitable for use without an air source, thus limiting its applicable scenarios. Summary of the Invention

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of the above, a laser cleaning head is provided according to a first aspect of the present disclosure, comprising: The shell has a first shell wall and a second shell wall. An air cavity is formed inside the shell. An air inlet is provided on the first shell wall. An air outlet and a light outlet are provided on the second shell wall. The air inlet is connected to the air outlet through the air cavity. A focusing lens is mounted on the housing and covers the light outlet. The power unit is located inside the air chamber and is used to drive the gas inside the air chamber to flow towards the air outlet. A filter element is disposed in the housing and covers the air inlet. The filter element is used to filter the airflow flowing through the air inlet. The air outlet's air outlet direction intersects with the axis of the focusing lens.

[0005] In one feasible implementation, the air outlet is arc-shaped and arranged circumferentially along the light outlet.

[0006] In one feasible implementation, the cross-sectional area of ​​the air chamber decreases along the direction from the air inlet to the air outlet.

[0007] In one feasible implementation, the housing is formed with an air outlet channel that connects the air chamber and the air outlet. The cross-sectional area of ​​the air outlet channel is smaller than the cross-sectional area of ​​the air chamber and larger than the cross-sectional area of ​​the air outlet.

[0008] In one feasible embodiment, the filter element includes a copper powder sintered filter sheet with a mesh size greater than or equal to 30 mesh and less than or equal to 40 mesh.

[0009] In one possible implementation, the first shell wall is away from the second shell wall.

[0010] In one feasible implementation, the laser cleaning head further includes: The control unit is located on the second shell wall and is electrically connected to the power unit and is used to control the operation of the power unit.

[0011] In one feasible implementation, the power unit includes an axial fan, and the arrangement direction of the first and second shell walls is consistent with the axial direction of the axial fan.

[0012] In one feasible implementation, the laser cleaning head further includes: The handle is attached to the housing.

[0013] A laser cleaning apparatus is provided according to a second aspect of the embodiments of this disclosure, comprising: Laser cleaning head as described in any of the first aspects above; The laser source is connected to the focusing lens and is used to emit laser light onto the surface of the workpiece to be cleaned through the focusing lens.

[0014] The above description is merely an overview of the technical solution provided in this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other features and effects of this disclosure more obvious and easy to understand, the following are specific examples of the implementation methods of this disclosure. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic structural diagram of a laser cleaning head according to an embodiment of the present disclosure; Figure 2 for Figure 1 The diagram shows a schematic cross-sectional view of the laser cleaning head along the AA direction. Figure 3 for Figure 2 A schematic enlarged view of a portion of region B in the middle.

[0016] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100. Housing; 101. First housing wall; 102. Second housing wall; 103. Air cavity; 104. Mounting cavity; 105. Air inlet; 106. Air outlet; 107. Light outlet; 108. Guide surface; 109. Air outlet channel; 200. Focusing lens; 300. Power unit; 400. Filter element; 500. Control unit; 600. Handle; 700. Partition plate; 800. Optical assembly; 810. Optical path reflector; 820. Galvanometer; 830. QBH connector; 840. Optical fiber; 900. Pressure ring. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] like Figures 1 to 3 As shown, a laser cleaning head is provided according to a first aspect of the present disclosure, comprising: a housing 100 having a first housing wall 101 and a second housing wall 102, an air cavity 103 formed inside the housing 100, an air inlet 105 formed on the first housing wall 101, an air outlet 106 formed on the second housing wall 102, and a light outlet 107 formed thereon, the air inlet 105 being connected to the air outlet 106 through the air cavity 103; a focusing lens 200 disposed in the housing 100 and covering the light outlet 107; a power unit 300 disposed in the air cavity 103, the power unit 300 being used to drive the gas in the air cavity 103 to flow toward the air outlet 106; and a filter element 400 disposed in the housing 100 and covering the air inlet 105, the filter element 400 being used to filter the airflow flowing through the air inlet 105; wherein the air outlet 106 is oriented in a direction intersecting the axial direction of the focusing lens 200.

[0019] The laser cleaning head provided in this embodiment includes the aforementioned housing 100, focusing lens 200, power unit 300, and filter element 400. The housing 100 has a light outlet 107 on its second shell wall 102. A focusing lens 200 is disposed on the housing 100 and covers the light outlet 107. In practical applications, the focusing lens 200 is used to connect the optical path to the laser source. Correspondingly, the laser output from the laser source can be focused onto the surface of the workpiece to be cleaned by the focusing lens 200 to perform surface cleaning on the workpiece. An air cavity 103 is formed inside the housing 100. The first shell wall 101 and the second shell wall 102 of the housing 100 have an air inlet 105 and an air outlet 106, respectively. The air inlet 105 and the air outlet 106 are connected through the air cavity 103. A power unit 300 is disposed in the air cavity 103 and is used to drive the gas in the air cavity 103 to flow to the air outlet 106. Thus, when the power unit 300 is running, the housing 100 can draw in gas from the external environment through the air inlet 105 and pass the drawn-in gas through the air outlet 106. The gas is discharged through the outlet 106. The outlet direction of the outlet 106 intersects the axis of the focusing lens 200, so that during the cleaning process, the gas output from the outlet 106 can form an air curtain between the workpiece and the focusing lens 200, which can blow away at least part of the contaminants splashed at the cleaning position and reduce the risk of contaminants splashing onto the surface of the focusing lens 200, thereby protecting the focusing lens and preventing the focusing lens from being contaminated by contaminants. The filter element 400 covers the inlet 105 and is used to filter the airflow flowing through the inlet 105. So that when the power unit 300 is running, the filter element 400 can filter the airflow flowing through the inlet 105 to the air chamber 103, thereby reducing at least part of the solid impurities carried in the airflow, ensuring the cleanliness of the gas in the air chamber 103 and the gas output from the outlet 106, and enhancing the protective effect of the gas output from the outlet 106 on the focusing lens. Based on this, the laser cleaning head provided in this embodiment can reduce the need for an external air source in practical applications, making it easier for the laser cleaning device to be used outdoors or in conditions without an air source. This enhances the portability and mobility of the laser cleaning device and helps to expand the applicable scenarios of the laser cleaning device.

[0020] It is understandable that, such as Figure 1 and Figure 2As shown, the laser cleaning head may further include an optical component 800, which is used for optical path connection between the laser source and the focusing lens 200. For example, the optical component 800 may include an optical path reflector 810, a galvanometer 820, a QBH connector 830, and an optical fiber 840. The optical fiber 840 is used for optical path connection between the laser source and the QBH connector 830. The optical path reflector 810 and the galvanometer 820 are disposed within the housing 100. The laser emitted by the laser source can be transmitted to the QBH connector 830 via the optical fiber 840 and shaped by the QBH connector 830 before being directed towards the optical path reflector 810. The laser reflected by the optical path reflector 810 can be further directed towards the focusing lens 200 via the galvanometer 820. Finally, the laser can be focused onto the surface of the workpiece to be cleaned by the focusing lens 200. The number of the aforementioned optical path reflectors 810 and galvanometers 820 can be multiple, and the placement and arrangement of the optical path reflectors 810 and galvanometers 820 within the housing 100 can be configured according to actual needs, without further limitations. The laser cleaning head may also include a partition 700 disposed within the housing 100. The partition 700 is used to separate the interior of the housing 100 into a mounting cavity 104 and the aforementioned air cavity 103. The aforementioned optical path reflectors 810 and galvanometers 820 can be disposed within the mounting cavity 104. Based on this, the impact of airflow within the housing 100 on the optical component 800 can be reduced, which is beneficial to ensuring the installation reliability and stability of the optical component 800.

[0021] It is understood that the air cavity 103, air inlet 105, air outlet 106, and light outlet 107 are all defined by the inner wall of the housing 100; among them, such as Figure 3 As shown, the housing 100 defines at least a portion of the inner wall of the aforementioned air outlet 106 as a guide surface 108, the extension direction of the guide surface 108 intersecting the axis of the focusing lens 200, thereby making the air outlet 106 intersect the axis of the focusing lens 200.

[0022] In one feasible implementation, the air outlet 106 is arc-shaped and arranged circumferentially along the light outlet 107.

[0023] In this technical solution, the aforementioned air outlet 106 can be arc-shaped and arranged circumferentially along the light outlet 107. Based on this, the range of the air curtain formed by the gas output from the air outlet 106 can be expanded, and the positional matching degree between the air outlet 106 and the focusing lens can be improved. This reduces the probability of contaminants splashed during the cleaning process passing through the air curtain, and can further improve the protective effect of the gas output from the air outlet 106 on the focusing lens 200.

[0024] like Figure 2 As shown, in one feasible embodiment, the cross-sectional area of ​​the air chamber 103 decreases along the direction from the air inlet 105 to the air outlet 106.

[0025] In this technical solution, the cross-sectional area of ​​the air chamber 103 can be set to decrease along the direction from the air inlet 105 to the air outlet 106. Based on this, when the power unit 300 is running, the gas in the air chamber 103 can accelerate to the air outlet 106, which can increase the gas flow rate output from the air outlet 106, enhance the purging effect of the gas output from the air outlet 106 on pollutants and the protection effect on the focusing lens 200.

[0026] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the housing 100 is formed with an air outlet channel 109, which connects the air chamber 103 and the air outlet 106. The cross-sectional area of ​​the air outlet channel 109 is smaller than the cross-sectional area of ​​the air chamber 103 and larger than the cross-sectional area of ​​the air outlet 106.

[0027] In this technical solution, the housing 100 can be formed with the aforementioned air outlet channel 109. The cross-sectional area of ​​the air outlet channel 109 is smaller than the cross-sectional area of ​​the air chamber 103 but larger than the cross-sectional area of ​​the air outlet 106. Based on this, when the power unit 300 is running, the gas in the housing 100 can have its flow velocity increased when it flows through the transition area between the air chamber 103 and the air outlet channel 109 and the transition area between the air outlet channel 109 and the air outlet 106. As a result, the gas in the housing 100 can flow out of the air outlet 106 more quickly, thereby increasing the gas flow velocity output from the air outlet 106 and enhancing the purging effect of the gas output from the air outlet 106 on pollutants and the protective effect on the focusing lens 200.

[0028] In one feasible embodiment, the filter element 400 includes a copper powder sintered filter sheet with a mesh size greater than or equal to 30 mesh and less than or equal to 40 mesh.

[0029] In this technical solution, the filter element 400 may include a copper powder sintered filter sheet with a mesh size greater than or equal to 30 mesh and less than or equal to 40 mesh. Based on this, the porosity and air permeability of the filter element 400 can be enhanced, the structural strength of the filter element 400 can be improved, and the service life of the filter element 400 can be extended while reducing the air intake resistance of the laser cleaning head.

[0030] For example, such as Figure 1 and Figure 2 As shown, the laser cleaning head may also include a pressure ring 900, and the housing 100 may also form a limiting step. One side of the filter element 400 is disposed on the limiting step, and the pressure ring 900 is disposed on the other side of the filter element 400. The pressure ring 900 and the limiting step cooperate to fix the filter element.

[0031] like Figure 2 As shown, in one possible implementation, the first shell wall 101 is away from the second shell wall 102.

[0032] In this technical solution, the aforementioned first shell wall 101 and the aforementioned second shell wall 102 can be two shell walls of the housing 100 that are opposite to each other. Based on the aforementioned arrangement, the air inlet 105 and the air outlet 106 face opposite directions and can form a relatively large gap between them, which helps to reduce the mutual influence between the flow fields around the air inlet 105 and the flow fields around the air outlet 106. This ensures the air intake efficiency of the laser cleaning head and the stability of the air curtain output from the air outlet 106, providing a reliable guarantee for the protective effect of the gas output from the air outlet 106 on the focusing lens 200.

[0033] like Figure 1 and Figure 2 As shown, in one feasible embodiment, the laser cleaning head further includes a control unit 500 disposed on the second housing wall 102, the control unit 500 being electrically connected to the power unit 300 and used to control the operation of the power unit 300.

[0034] In this technical solution, the laser cleaning head may further include the aforementioned control unit 500. Based on the aforementioned configuration, the user can easily control the operation of the power unit 300 through the control unit 500, which improves the ease of use of the laser cleaning head.

[0035] For example, the control unit 500 is at least used to control the power unit 300 to switch between an on state and an off state. In some examples, the control unit 500 can also be used to adjust the output wind speed of the power unit 300.

[0036] For example, the control unit 500 may include control buttons or control knobs electrically connected to the power unit 300.

[0037] In one possible implementation, the power unit 300 includes an axial fan, and the arrangement direction of the first shell wall 101 and the second shell wall 102 is consistent with the axial direction of the axial fan.

[0038] In this technical solution, the power unit 300 may further include the aforementioned axial flow fan. Based on the aforementioned configuration, the power unit 300 can use the axial flow fan to drive the gas flow within the air chamber 103, and the flow direction of the gas driven by the axial flow fan can be approximately the same as the arrangement direction of the air inlet 105 and the air outlet 106. This can reduce the deflection and reversal of gas within the housing 100, which is beneficial for further reducing the flow resistance and energy loss of gas within the housing 100, improving the gas output efficiency of the housing 100, and enhancing the protective effect of the gas output from the air outlet on the focusing lens 200.

[0039] like Figure 1 and Figure 2 As shown, in one feasible embodiment, the laser cleaning head further includes a handle 600 connected to the housing 100.

[0040] In this technical solution, the laser cleaning head may also include the aforementioned handle 600, which makes it easier for users to hold and operate the laser cleaning head, further improving the ease of use of the laser cleaning head.

[0041] For example, when the laser cleaning head includes the aforementioned QBH connector 830, the QBH connector 830 passes through the handle 600, and the end of the QBH connector 830 away from the housing 100 is located outside the handle 600 and is used to connect the optical fiber 840.

[0042] According to a second aspect of the present disclosure, a laser cleaning apparatus is provided, comprising: a laser cleaning head as described in any of the first aspects above; and a laser source, the optical path of which is connected to a focusing lens 200 and is used to emit laser light onto the surface of the workpiece to be cleaned through the focusing lens 200.

[0043] Since the laser cleaning apparatus provided in this disclosure includes a laser cleaning head as described in any of the first aspects above, it possesses all the beneficial effects of such a laser cleaning head, which will not be elaborated here.

[0044] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0045] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A laser cleaning head, characterized in that, include: The housing (100) has a first shell wall (101) and a second shell wall (102). An air cavity (103) is formed inside the housing (100). An air inlet (105) is provided on the first shell wall (101), and an air outlet (106) and a light outlet (107) are provided on the second shell wall (102). The air inlet (105) is connected to the air outlet (106) through the air cavity (103). A focusing lens (200) is disposed in the housing (100) and covers the light outlet (107). A power unit (300) is disposed in the air chamber (103), and the power unit (300) is used to drive the gas in the air chamber (103) to flow to the air outlet (106); A filter element (400) is disposed in the housing (100) and covers the air inlet (105), the filter element (400) being used to filter the airflow flowing through the air inlet (105); The air outlet (106) has an air outlet direction that intersects with the axis of the focusing lens (200).

2. The laser cleaning head according to claim 1, characterized in that, The air outlet (106) is arc-shaped and arranged circumferentially along the light outlet (107).

3. The laser cleaning head according to claim 1, characterized in that, The cross-sectional area of ​​the air chamber (103) decreases along the direction from the air inlet (105) to the air outlet (106).

4. The laser cleaning head according to claim 1, characterized in that, The housing (100) has an air outlet channel (109) that connects the air chamber (103) and the air outlet (106). The cross-sectional area of ​​the air outlet channel (109) is smaller than that of the air chamber (103) and larger than that of the air outlet (106).

5. The laser cleaning head according to claim 1, characterized in that, The filter element (400) includes a copper powder sintered filter sheet, wherein the mesh size of the copper powder sintered filter sheet is greater than or equal to 30 mesh and less than or equal to 40 mesh.

6. The laser cleaning head according to claim 1, characterized in that, The first shell wall (101) is away from the second shell wall (102).

7. The laser cleaning head according to claim 6, characterized in that, Also includes: A control unit (500) is disposed on the second housing wall (102), the control unit (500) is electrically connected to the power unit (300) and is used to control the operation of the power unit (300).

8. The laser cleaning head according to claim 6, characterized in that, The power unit (300) includes an axial fan, and the arrangement direction of the first shell wall (101) and the second shell wall (102) is consistent with the axial direction of the axial fan.

9. The laser cleaning head according to claim 1, characterized in that, Also includes: A handle (600) is attached to the housing (100).

10. A laser cleaning device, characterized in that, include: Laser cleaning head as described in any one of claims 1 to 9; The laser source is connected to the focusing lens (200) and is used to emit laser light onto the surface of the workpiece to be cleaned through the focusing lens (200).

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