Composite laser cleaning head and composite laser cleaning equipment

Abstract

The invention provides a composite laser cleaning head and composite laser cleaning equipment, the composite laser cleaning head comprises a cleaning main body, a collimation module, a reflection module, a galvanometer module, a focusing module and a detection module, the cleaning main body is provided with a laser inlet, a laser outlet and a mounting cavity, and the laser inlet and the laser outlet are both communicated with the mounting cavity; the collimation module is arranged in the laser inlet in a penetrating mode and used for being connected with an optical fiber. The reflection module is positioned in the mounting cavity; at least one part of the galvanometer module is positioned in the mounting cavity; the focusing module is mounted in the laser outlet; the detection module comprises a photosensitive element which is connected with the reflection module; the collimation module, the reflection module, the galvanometer module and the focusing module are used for being sequentially arranged in the transmission direction of laser to jointly define a laser path; the light sensing element is configured to transmit a first signal to the control system during light sensing, so that the control system cuts off a power supply when light is not indicated. According to the composite laser cleaning head, the safety of laser cleaning operation can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser cleaning, and in particular to a composite laser cleaning head and composite laser cleaning equipment. Background Art

[0002] The laser generated by the laser source is emitted through the laser head, which is used to guide the high-energy laser beam generated by the laser source to be accurately and efficiently transmitted to the area that needs to be cleaned. However, when there are faults such as light source component failure, control system failure and improper operation, the laser head will still emit laser in the non-laser cleaning state. The emitted laser poses a risk of injuring the human body, and it is difficult to ensure the safety of laser cleaning. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a composite laser cleaning head, which can improve the safety of laser cleaning operations.

[0004] The present application also proposes a composite laser cleaning device having the composite laser cleaning head.

[0005] The composite laser cleaning head according to the embodiment of the present application includes a cleaning body, a collimation module, a reflection module, a galvanometer module, a focusing module and a detection module; The cleaning body is provided with a laser inlet, a laser outlet and a mounting cavity, wherein the laser inlet and the laser outlet are both connected to the mounting cavity; A collimation module is inserted into the laser inlet and is used to connect the optical fiber; A reflective module is located in the mounting cavity; A galvanometer module, at least a portion of which is located in the mounting cavity; A focusing module is installed in the laser outlet; The detection module includes a photosensitive element, the photosensitive element is connected to the reflection module, and the photosensitive element is used to electrically connect to the control system; The collimation module, the reflection module, the galvanometer module and the focusing module are arranged in sequence along the transmission direction of the laser to jointly define a laser path; The light sensing element is configured to transmit a first signal to the control system when sensing light, so that the control system cuts off the power supply when no light is indicated.

[0006] The composite laser cleaning head according to the embodiment of the present application has at least the following beneficial effects: the collimation module, the reflection module, the galvanometer module and the focusing module constitute a laser path, which is used to ensure that the laser is transmitted along the path of the laser inlet, the installation cavity and the laser outlet; the photosensitive element is used to sense light at the location of the reflection module; when the photosensitive element senses light, it can transmit a first signal to the control system so that the control system cuts off the power supply when the first signal is received and no light is indicated, which is used to prevent the composite laser cleaning head from emitting laser in a non-laser cleaning state, effectively blocking the laser from damaging the human body, and is beneficial to improving the safety of laser cleaning operations.

[0007] According to some embodiments of the present application, the reflection module includes a reflector seat and a reflective lens, the reflector seat is connected to the cleaning body, the reflector seat is provided with a first groove and a second groove, the first groove and the second groove are spaced apart, the reflective lens is located in the first groove, and the photosensitive element is located in the second groove, and the collimating module includes a collimating lens, and along the first direction, the collimating lens and the reflective lens are spaced apart.

[0008] According to some embodiments of the present application, the detection module further includes a temperature sensing element, the temperature sensing element is located in the installation cavity, and the temperature sensing element is spaced apart from the laser path; The temperature sensing element is used to be electrically connected to the control system, and the temperature sensing element is configured to transmit a second signal to the control system so that the control system controls the power supply to be cut off when the value of the second signal is greater than a preset temperature value.

[0009] According to some embodiments of the present application, the composite laser cleaning head also includes a first air knife assembly, which is connected to the cleaning body, and the first air knife assembly is provided with an avoidance through hole and a plurality of first air holes, and the inner peripheral walls of the avoidance through holes are distributed around the outer peripheral edge of the laser outlet, and the extension lines of the openings of each first air hole intersect at a reference point, and the reference point is located on the side of the focusing module away from the installation cavity.

[0010] According to some embodiments of the present application, the composite laser cleaning head also includes a second air knife assembly, the second air knife assembly is connected to the cleaning body, the second air knife assembly includes a second air hole, and the second air hole is arranged toward the side of the focusing module away from the installation cavity.

[0011] According to some embodiments of the present application, the composite laser cleaning head further includes a dust suction component, which is connected to the cleaning body. The dust suction component includes a dust suction port, which faces a side of the cleaning body where the laser outlet is provided.

[0012] According to some embodiments of the present application, the cleaning body is provided with a cooling inlet, a cooling outlet and a first channel, one end of the first channel is connected to the cooling inlet, and the other end of the first channel is connected to the cooling outlet. The cleaning body is also provided with a wiring cavity, and the first channel is located between the installation cavity and the wiring cavity.

[0013] According to some embodiments of the present application, the first channel includes a first through section, a second through section and a third through section, the reflection module includes a reflector seat, the reflector seat is provided with a second channel, the first through section is connected to the cooling inlet, and the second through section is connected to the cooling outlet; The first through section is also connected to the second channel, and the second channel is connected to the second through section, and the first through section, the second channel and the second through section together define a first cooling circuit; The first through section is also connected to the third through section, and the third through section is also connected to the second through section. The first through section, the second through section and the third through section together define a second cooling circuit.

[0014] According to some embodiments of the present application, the cleaning body is provided with two laser inlets, the collimation module includes a continuous collimation mirror and a pulse collimation mirror, the continuous collimation mirror is arranged in one of the laser inlets, and the pulse collimation mirror is arranged in the other laser inlet, the reflection module includes a first reflection mirror group and a second reflection mirror group, and the galvanometer module includes a first galvanometer group and a second galvanometer group; The continuous collimator, the first reflector, the first galvanometer group and the focusing module jointly define a first laser path, and the pulse collimator, the second reflector, the second galvanometer group and the focusing module jointly define a second laser path.

[0015] The composite laser cleaning device according to the embodiment of the present application includes a control system and the composite laser cleaning head in any of the above embodiments, and the detection module is electrically connected to the control system.

[0016] The composite laser cleaning equipment according to the embodiment of the present application has at least the following beneficial effects: the control system is used to receive the signal transmitted by the detection module, and interrupt the laser emission in the non-laser cleaning state by cutting off the power supply, thereby avoiding damage to the human body caused by accidental laser light emission, which is beneficial to improving the safety of laser cleaning operations.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present application is further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a composite laser cleaning head according to an embodiment of the present application; Figure 2 This is a schematic structural diagram of a composite laser cleaning head from a first perspective of some embodiments of the present application; Figure 3 This is a schematic structural diagram of a composite laser cleaning head from a second viewing angle in some embodiments of the present application; Figure 4 This is a front view of the cleaning body of the embodiment of the present application; Figure 5 for Figure 4 Sectional view at AA in the middle; Figure 6 This is a schematic diagram of the structure of the galvanometer module of an embodiment of the present application; Figure 7 This is a cross-sectional view of the cleaning body and the closure member of the embodiment of the present application; Figure 8 This is a schematic diagram of the structure of the cleaning body of the embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of the reflection module in the embodiment of the present application; Fig.10 This is a schematic structural diagram of the composite laser cleaning head from another perspective of an embodiment of the present application.

[0019] Reference numerals: cleaning body 100, laser inlet 110, mounting groove 111, first limiting groove 1111, fixing portion 112, second limiting groove 1121, first through hole 113, locking member 114, laser outlet 120, first side wall 121, mounting cavity 130, cooling inlet 140, cooling outlet 150, first channel 160, first through section 161, second through section 162, third through section 163, mounting hole 170, closing member 180, closing cavity 181, wiring cavity 190, first wiring opening 191, second wiring opening 192; Collimation module 200, continuous collimation mirror 210, pulse collimation mirror 220; Reflection module 300, first reflector set 310, second reflector set 320, reflector seat 330, first groove 331, second groove 332, second channel 333, first opening 3331, second opening 3332, reflector lens 340; The galvanometer module 400, the first galvanometer group 410, the second galvanometer group 420, the galvanometer lens 430, and the driving unit 440; Focus module 500; Detection module 600, light sensing element 610, temperature sensing element 620; The first air knife assembly 710 , the avoidance through hole 711 , the first air hole 712 , the second air knife assembly 720 , and the second air hole 721 . DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0021] 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.

[0022] In the description of this application, "several" means more than one, "more" means two or more, "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.

[0023] 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.

[0024] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0025] The following is an introduction to the embodiments of the present application in conjunction with the accompanying drawings: refer to Figures 1 to 5According to the composite laser cleaning head of the embodiment of the present application, it includes a cleaning body 100, a collimation module 200, a reflection module 300, a galvanometer module 400, a focusing module 500 and a detection module 600. The cleaning body 100 is provided with a laser inlet 110, a laser outlet 120 and a mounting cavity 130. The laser inlet 110 and the laser outlet 120 are both connected to the mounting cavity 130. The collimation module 200 is arranged in the laser inlet 110. The collimation module 200 is used to connect the optical fiber. The laser is transmitted to the collimation module 200 through the optical fiber. The laser is transformed from a divergent state to a parallel state through the collimation module 200. The arrangement of the collimation module 200 enables the laser to be more concentrated and accurately delivered to the reflection module 300. The reflection module 300 is located in the installation cavity 130, and is used to receive the laser from the collimation module 200 and reflect the laser to the galvanometer module 400. The reflection module 300 can change the transmission direction of the laser. At least a part of the galvanometer module 400 is located in the installation cavity 130. The galvanometer module 400 is used to receive the laser reflected by the reflection module 300 and realize the deflection of the light beam. The focusing module 500 is installed at the location of the laser outlet 120. The focusing module 500 is used to focus the laser reflected by the galvanometer module 400 to improve the accuracy and efficiency of laser processing. Therefore, the collimation module 200, the reflection module 300, the galvanometer module 400 and the focusing module 500 are used to be arranged in sequence along the transmission direction of the laser to jointly define a laser path.

[0026] In addition, the detection module 600 includes a photosensitive element 610, which is connected to the reflection module 300 and is used to electrically connect to the control system. The photosensitive element 610 can be a photosensitive diode that can convert light signals into electrical signals. The photosensitive element 610 is configured to transmit a first signal to the control system when it is sensitive to light, so that the control system cuts off the power supply when no light is indicated, thereby preventing the laser from being accidentally emitted in a non-laser cleaning state to injure the human body, which is beneficial to improving the safety of laser cleaning operations.

[0027] It should be noted that the photosensitive element 610 is located in the installation cavity 130, and the installation cavity 130 can block light interference from the external environment to ensure the accuracy of the feedback signal of the photosensitive element 610. In addition, compared with being installed in other positions, the photosensitive element 610 is connected to the reflection module 300 to facilitate more timely feedback of the first signal to the control system to block the risk caused by abnormal laser emission.

[0028] refer to Figures 1 to 7Specifically, the cleaning body 100 is provided with a mounting hole 170, the galvanometer module 400 includes a galvanometer lens 430 and a driving unit 440, the galvanometer lens 430 is connected to the driving unit 440, the galvanometer lens 430 is located in the mounting cavity 130, and the driving unit 440 passes through the mounting hole 170 to separate the galvanometer lens 430 from the driving unit 440, thereby reducing the heat accumulation in the mounting cavity 130 and extending the continuous working time of the composite laser cleaning head. The composite laser cleaning head also includes a sealing member 180, which is connected to the cleaning body 100 to seal the driving unit 440 in the sealing cavity 181 to protect the driving unit 440. The cleaning body 100 also includes a wiring cavity 190, a first wiring port 191 and a second wiring port 192. The wiring cavity 190 is connected to the closed cavity 181 through the first wiring port 191, and the closed cavity 181 is connected to the installation cavity 130 through the second wiring port 192. The cavity wall of the wiring cavity 190 is fixed with a connecting terminal. Therefore, by plugging in the connecting terminal, power supply and signal transmission to the driving unit 440, the reflection module 300 and the detection module 600 can be realized, and the wires can also be stored, which is beneficial to improving the portability and safety of the equipment.

[0029] refer to Figures 3 to 8 In some other embodiments, the cleaning body 100 further includes a mounting groove 111, a fixing portion 112 and a first through hole 113. Along the third direction, the fixing portion 112 includes a first end and a second end opposite to each other, and the first end is connected to the side wall of the mounting groove 111, so that the fixing portion 112 is spaced apart from the first end from the groove wall of the mounting groove 111, and a part of the fixing portion 112 can produce elastic deformation on the basis of ensuring that the fixing portion 112 is connected to the groove wall of the mounting groove 111. Along the second direction, a first limiting groove 1111 is provided on one side of the groove wall of the mounting groove 111, and the fixing portion 112 is provided with a second limiting groove 1121. The first limiting groove 1111 is arranged toward the second limiting groove 1121, and the first limiting groove 1111 and the second limiting groove 1121 enclose an installation space. Along the first direction, the installation space is located on one side of the laser entrance 110, and the installation space is connected to the laser entrance 110. The first direction, the second direction and the third direction are perpendicular to each other.

[0030] The collimation module 200 is arranged in the installation space and the laser entrance 110 along the first direction. For example, along the first direction, the installation space is located on the side of the laser entrance 110 away from the installation cavity 130. When the collimation module 200 is assembled with the cleaning body 100, it is necessary to sequentially pass through the installation space and the laser entrance 110. The shapes of the first limiting groove 1111 and the second limiting groove 1121 match the shape of the outer peripheral wall of the collimation module 200. The first limiting groove 1111 is used to provide a positioning reference for the installation of the collimation module 200. For example, the outer peripheral wall of the collimation module 200 is cylindrical, and the groove walls of the first limiting groove 1111 and the second limiting groove 1121 are cylindrical surfaces adapted to the shape of the outer peripheral wall of the collimation module 200. The groove walls of the first limiting groove 1111 and the second limiting groove 1121 can fit the outer peripheral wall of the collimation module 200, which is beneficial to improve the stability and accuracy of the installation of the collimation module 200.

[0031] In the second direction, the first through hole 113 penetrates the cleaning body 100 and communicates with the mounting groove 111. The first through hole 113 is located on the side of the fixing portion 112 away from the second limiting groove 1121, and the first through hole 113 is arranged toward the second end. The locking member 114 is configured to penetrate the first through hole 113 and abut the second end, and the locking member 114 can move relative to the cleaning body 100 in the second direction to drive a part of the fixing portion 112 to approach or move away from the first limiting groove 1111. 4, a part of the fixing portion 112 is elastically deformed and approaches the first limiting groove 1111, and the groove walls of the first limiting groove 1111 and the second limiting groove 1121 abut against the outer wall of the collimation module 200, so that the collimation module 200 is installed and fixed, and a more stable and accurate installation of the collimation module 200 can be achieved. In addition, when installing the collimation module 200, the size of the installation space can be adjusted by the locking piece 114, so as to improve the adaptability to the installation of collimation modules 200 with different diameters.

[0032] It should be noted that the locking member 114 can be a bolt, and the locking member 114 is connected to the cleaning body 100 by a thread, and the two rotate relative to each other with the second direction as the axis, thereby realizing the movement of the locking member 114 relative to the cleaning body 100 along the second direction, and then driving a part of the fixing part 112 to produce elastic deformation to cooperate with the first limiting groove 1111 to fix the alignment module 200.

[0033] It should also be noted that Figures 1 to 3 In FIG. 1 , the portion passing through the laser outlet 120 represents the laser transmission direction.

[0034] refer to Figures 3 to 9In some embodiments, the reflection module 300 includes a reflection mirror seat 330 and a reflection lens 340. The reflection mirror seat 330 is connected to the cleaning body 100. The reflection mirror seat 330 is provided with a first groove 331 and a second groove 332. The first groove 331 and the second groove 332 are arranged at intervals. The reflection lens 340 is located in the first groove 331, and the photosensitive element 610 is located in the second groove 332. The arrangement of the first groove 331 and the second groove 332 allows a gap between the photosensitive element 610 and the reflection lens 340. The collimating module 200 includes a collimating lens. Along the first direction, the collimating lens and the reflection lens 340 are arranged at intervals. The laser passing through the collimating lens is transmitted to the reflection lens 340 along the first direction. The photosensitive element 610 is used to sense the edge of the laser beam or the surrounding light, so as to realize the photosensitivity function while avoiding the central part of the laser beam to ensure the normal transmission of the laser.

[0035] It should be noted that the collimation module 200 is used to transform the laser from a divergent state to a parallel state. From the collimation module 200 to the reflection module 300, the laser will gradually tend to diverge. If the photosensitive element 610 is connected to the collimation module 200, in order to enable the photosensitive element 610 to sense light, the photosensitive element 610 needs to be closer to the center of the laser beam, which is easy to block the transmission of the laser. Therefore, in this application, the photosensitive element 610 is placed in the second groove 332, and the laser beam is transmitted to the position where the reflection module 300 is located with a larger divergence angle. The photosensitive element 610 can sense the divergent light of the laser beam and detect whether the laser is emitted, and can avoid blocking the center of the laser beam. On the basis of ensuring the cleaning performance of the composite laser cleaning head, it is beneficial to improve the safety of the laser cleaning operation.

[0036] refer to Figures 1 to 3 In some embodiments, the detection module 600 also includes a temperature sensing element 620, which is located in the installation cavity 130 and is spaced apart from the laser path to avoid the central part of the laser beam. The temperature sensing element 620 is used to be electrically connected to the control system. The temperature sensing element 620 is configured to transmit a second signal to the control system so that the control system controls the power supply to be cut off when the value of the second signal is greater than a preset temperature value, thereby avoiding overheating of the composite laser cleaning head and being beneficial to ensuring the performance of the composite laser cleaning head.

[0037] It should be noted that the temperature sensing element 620 can be a temperature sensor. For example, the temperature sensing element 620 can be a digital temperature sensor, which can directly output a digital signal to the control system, so as to facilitate comparison and judgment with a preset temperature value. The temperature sensing element 620 can also be an analog temperature sensor, and the output signal can be converted into a digital signal by analog-to-digital conversion before being transmitted to the control system, or the analog signal can be first transmitted to the control system, and then the analog-to-digital conversion is performed by the control system, and then the converted value is compared with the preset value, that is, the second signal can be a digital signal or an analog signal, and the value of the second signal should be understood as the temperature value inside the installation cavity 130 measured by the temperature sensing element 620. The preset temperature value can be adjusted according to demand, for example, the preset temperature value can be set to any value between 40°C and 50°C, and specifically can be any value between 40°C, 42°C, 44°C, 46°C, 48°C and 50°C.

[0038] refer to Figures 1 to 3 In some embodiments, the cleaning body 100 is provided with a first side wall 121, the first side wall 121 is provided with a laser outlet 120, and the temperature sensing element 620 is connected to the side of the first side wall 121 facing the installation cavity 130. The heat generated by the focusing module 500 is conducted to the temperature sensing element 620 through the first side wall, which is beneficial to better detect the temperature value where the focusing module 500 is located, and the temperature sensing element 620 is spaced apart from the laser outlet 120 to avoid laser transmission from the galvanometer module 400 to the focusing module 500, thereby ensuring the performance of the composite laser cleaning head.

[0039] refer to Figures 8 to 10 In some embodiments, the composite laser cleaning head further includes a first air knife assembly 710, which is connected to the cleaning body 100. The first air knife assembly 710 is provided with an avoidance through hole 711 and a plurality of first air holes 712. The inner peripheral wall of the avoidance through hole 711 is distributed around the outer peripheral edge of the laser outlet 120, and is used to avoid the laser outlet 120 to ensure the normal emission of the laser. The extension lines of the opening directions of the first air holes 712 intersect at a reference point, and the reference point is located on the side of the focusing module 500 away from the installation cavity 130. Thus, an air curtain is formed on the side of the focusing module 500 away from the installation cavity 130, which is used to prevent impurities such as dust or debris from contacting the focusing module 500, which is beneficial to extending the service life of the focusing module 500.

[0040] refer to Figures 8 to 10 In other embodiments, the focusing module 500 includes a protective lens and a focusing lens, both of which are installed at the laser outlet 120. The protective lens is located on the side of the focusing lens away from the mounting cavity 130. The protective lens is configured to allow the laser to pass through and can block impurities such as dust and debris, so as to protect the focusing lens and ensure the cleanliness of the surface of the focusing lens.

[0041] refer to Figures 8 to 10 In other embodiments, on the basis of the focusing module 500 being provided with a protective lens, the inner peripheral wall of the avoidance through hole 711 is distributed around the outer peripheral edge of the protective lens, and the plurality of first air holes 712 form an air curtain on the side of the protective lens away from the focusing lens. Thus, the focusing lens is doubly protected by the air curtain composed of the plurality of first air holes 712 and the protective lens, and the protective lens can also be protected by the barrier of the air curtain, which is beneficial to further extend the service life of the focusing module 500.

[0042] It should be noted that the protective lens is installed at the laser outlet 120 , and the outer periphery surrounding the protective lens can also be understood as the outer periphery surrounding the laser outlet 120 .

[0043] refer to Figures 8 to 10 In some embodiments, the composite laser cleaning head also includes a second air knife assembly 720, which is connected to the cleaning body 100. The second air knife assembly 720 includes a second air hole 721, and the second air hole 721 is arranged toward the side of the focusing module 500 away from the installation cavity 130. The second air knife assembly 720 is used to connect to an air pump. The air blowing through the second air hole 721 can promptly disperse the debris generated by laser cleaning to avoid the accumulation of debris on the surface of the workpiece and interfere with the laser cleaning operation.

[0044] Specifically, the second air knife assembly 720 includes a connecting frame and an air outlet piece, the connecting frame is connected to the cleaning body 100, the air outlet piece and the connecting frame are rotatably connected, the air outlet piece is provided with a second air hole 721, and the direction of the second air hole 721 can be adjusted by rotating the air outlet piece. For example, the air outlet piece rotates around a rotating axis relative to the connecting piece, and the rotating axis can be perpendicular to the axial direction of the laser outlet 120, wherein the direction of the rotating axis can be understood as the radial direction of the laser outlet 120.

[0045] It should be noted that the airflow disturbance ranges generated by the second air knife assembly 720 and the first air knife assembly 710 are in different regions, and the airflow disturbance range generated by the first air knife assembly 710 is closer to the laser outlet 120 .

[0046] refer to Fig.10 In some embodiments, the composite laser cleaning head further includes a dust suction component (not shown in the figure), which is connected to the cleaning body 100. The dust suction component includes a dust suction port, which faces the side of the cleaning body 100 where the laser outlet 120 is provided. The dust suction component is used to clean up the debris generated by the laser cleaning in a timely manner, which is beneficial to ensure the cleanliness of the laser cleaning operation environment and avoid interference of the debris on the laser cleaning operation.

[0047] In addition, the combination of the dust suction component and the second air knife component 720, the second air knife component 720 blows away the debris, and the dust suction component is more likely to suck the debris off the surface of the workpiece, which is beneficial to further improve the efficiency of cleaning the debris.

[0048] refer to Figures 4 to 8 In some embodiments, the cleaning body 100 is provided with a cooling inlet 140, a cooling outlet 150 and a first channel 160, one end of the first channel 160 is connected to the cooling inlet 140, and the other end of the first channel 160 is connected to the cooling outlet 150, that is, the cooling inlet 140 and the cooling outlet 150 are connected through the first channel 160. The cleaning body 100 is also provided with a wiring cavity 190, which is independent of the installation cavity 130. The wiring cavity 190 is used to accommodate the power supply cable of the composite laser cleaning head. The first channel 160 is located between the installation cavity 130 and the wiring cavity 190, and the first channel 160 is closed relative to the installation cavity 130. The first channel 160 is closed relative to the wiring cavity 190. The coolant flows into the first channel 160 from the cooling inlet 140 and flows out from the cooling outlet 150. During the flow of the coolant in the first channel 160, the heat in both the installation cavity 130 and the wiring cavity 190 can be taken away, which is beneficial to reducing the working temperature of the composite laser cleaning head and extending the service life of the composite laser cleaning head.

[0049] refer to Figures 3 to 8 In some embodiments, the first channel 160 includes a first through section 161, a second through section 162, and a third through section 163. The reflective module 300 includes a reflector seat 330. The reflector seat 330 is provided with a second channel 333. The first through section 161 is connected to the cooling inlet 140, the second through section 162 is connected to the cooling outlet 150, the first through section 161 is also connected to the second channel 333, and the second channel 333 is connected to the second through section 162. The first through section 161, the second channel 333, and the second through section 162 jointly define a first cooling circuit. The first cooling circuit enables the coolant to flow through the reflector seat 330, which is beneficial to the sufficient cooling of the reflective module 300. The first through section 161 is also connected to the third through section 163, and the third through section 163 is also connected to the second through section 162. The first through section 161, the second through section 162, and the third through section 163 jointly define a second cooling circuit for increasing the cooling area. By providing the first cooling circuit and the second cooling circuit, the cooling efficiency of the composite laser cleaning head can be further improved.

[0050] Specifically, the coolant flows into the first section 161 from the cooling inlet 140, a part of the coolant in the first section 161 flows to the second channel 333, and the other part flows to the third section 163. Then, the coolant in the second channel 333 and the third section 163 converge into the second section 162, realizing a dual circulation in which the first cooling circuit and the second cooling circuit flow synchronously.

[0051] refer to Figures 2 to 10 In some embodiments, the reflection module 300 includes a first reflector group 310 and a second reflector group 320, both of which include a reflector seat 330, and both reflector seats 330 are provided with a second channel 333, the second channel 333 has a first opening 3331 and a second opening 3332, the first opening 3331 is arranged at the bottom of the reflector seat 330, and the second opening 3332 is arranged at the top of the reflector seat 330, and the reflector lens 340 is installed on the reflector seat 330, and the positions of the first opening 3331 and the second opening 3332 are arranged to avoid the installation of the reflector lens 340.

[0052] Among them, the second channels 333 of the two reflector seats 330 can be connected in series, for example, the second openings 3332 of the two second channels 333 are connected, the first opening 3331 of one second channel 333 is connected to the first through section 161, and the first opening 3331 of the other second channel 333 is connected to the second through section 162, the first through section 161, the two second channels 333 and the second through section 162 can also form a first cooling circuit, so that the first cooling circuit can cool multiple reflector seats 330 at the same time.

[0053] refer to Figures 1 to 10 In other embodiments, the composite laser cleaning head includes a plurality of temperature sensing elements 620, the collimation module 200, the reflection module 300 and the first side wall are all connected with the temperature sensing elements 620, and the plurality of temperature sensing elements 620 are all electrically connected to the control system for feeding back a second signal to the control system. When the temperature value detected by any temperature sensing element 620 exceeds the preset temperature value in the control system, the control system cuts off the power supply to avoid local overheating of the composite laser cleaning head and damage to the optical device, which is beneficial to further improve the temperature detection sensitivity of the composite laser cleaning head.

[0054] refer to Figures 1 to 10 The collimation module 200 includes a continuous collimator 210 and a pulse collimator 220, and the reflection module 300 includes a first reflection mirror group 310 and a second reflection mirror group 320. The continuous collimator 210, the pulse collimator 220, the first reflection mirror group 310, the second reflection mirror group 320 and the first side wall are all connected with a temperature sensing element 620, each temperature sensing element 620 is electrically connected to the control system, and each temperature sensing element 620 independently feeds back a second signal to the control system. The control system may have multiple preset temperature values ​​of different sizes, and the preset temperature values ​​of different sizes may correspond to the temperature sensing elements 620 at different positions, which is beneficial to more accurately judge the overheating problem inside the composite laser cleaning head and avoid overheating damage to the composite laser cleaning head.

[0055] For example, the first reflector group 310 and the second reflector group 320 are both provided with a second channel 333, and the first cooling circuit passes through the first reflector group 310 and the second reflector group 320, and the first reflector group 310 and the second reflector group 320 have a better cooling effect relative to the collimation module 200 or the first side wall. Therefore, for the temperature sensing elements 620 installed at the first reflector group 310 and the second reflector group 320, a lower preset temperature value, such as 40° C., is set in the control system. The temperature sensing elements 620 installed at the first side wall, the continuous collimator and the pulse collimator 220 are far away from the cooling circuit, and the temperature is relatively high during normal laser operation, so a higher preset temperature value, such as 50° C., is set in the control system. It is beneficial to more accurately monitor the temperature of each part in the composite laser cleaning head, ensure that each part of the composite laser cleaning head does not exceed the limit temperature, avoid local overheating of the composite laser cleaning head, and avoid the problem of frequent shutdown and cooling due to a low preset temperature value.

[0056] refer to Figures 1 to 10 In some embodiments, the cleaning body 100 is provided with two laser inlets 110, the collimation module 200 includes a continuous collimation mirror 210 and a pulse collimation mirror 220, the continuous collimation mirror 210 is arranged in one of the laser inlets 110, and the pulse collimation mirror 220 is arranged in the other laser inlet 110, the reflection module 300 includes a first reflection mirror group 310 and a second reflection mirror group 320, the galvanometer module 400 includes a first galvanometer group 410 and a second galvanometer group 420, the continuous collimation mirror 210, the first reflection mirror, the first galvanometer group 410 and the focusing mirror The focus module 500 jointly defines a first laser path, the pulse collimator 220, the second reflector, the second galvanometer group 420 and the focusing module 500 jointly define a second laser path, the continuous collimator 210 is used to pass a continuous light laser, the pulse collimator 220 is used to pass a pulse light laser, the continuous light laser can be set to a higher power for efficient cleaning of the surface of the workpiece, the pulse light laser can be set to a lower power for further cleaning the area after the continuous light laser cleaning, which is beneficial to reduce damage to the workpiece surface and can improve the cleanliness of laser cleaning.

[0057] It should be noted that the first reflector group 310 and the second reflector group 320 both include a reflector seat 330 and a reflector lens 340, and the first galvanometer group 410 and the second galvanometer group 420 both include a galvanometer lens 430 and a driving unit 440. The continuous light laser is transmitted along the first laser path, and the pulsed light laser is transmitted along the second laser path. The first laser path and the second laser path are independent of each other, which is convenient for independent control and optimization of the first laser path and the second laser path according to actual needs, and the adjustment of the composite laser cleaning head is more flexible. It is beneficial to meet the needs of different application scenarios.

[0058] refer to Figures 1 to 10In some embodiments, the composite laser cleaning head includes a mounting flange and / or a gripping handle, and both the mounting flange and the gripping handle can be detachably connected to the cleaning body 100. When the mounting flange is connected to the cleaning body 100, the composite laser cleaning head can be positioned and installed on the manipulator through the mounting flange, and the composite laser cleaning head moves with the manipulator to perform laser cleaning. When the gripping handle is connected to the cleaning body 100, the composite laser cleaning head can be held by hand for laser cleaning operations.

[0059] refer to Figures 1 to 10 According to the composite laser cleaning equipment of the embodiment of the present application, it includes a control system and the composite laser cleaning head in any of the above embodiments. The detection module 600 is electrically connected to the control system. The control system has two states: laser cleaning and non-laser cleaning. In the laser cleaning state, the laser source is controlled to emit laser, and in the non-laser cleaning state, the laser source is controlled to be turned off. Based on this, when the control system is in the non-laser cleaning state, if the photosensitive element 610 transmits a first signal to the control system, it proves that there is abnormal laser emission. The control system controls the power supply to be turned off to stop laser emission, avoid damage to the human body, and is beneficial to improving the safety of laser cleaning operations.

[0060] Alternatively, when the control system is in any state, if the temperature sensing element 620 transmits a second signal to the control system, the control system will compare the second signal with a preset temperature value in the control system. If the second signal is greater than the preset temperature value, the control system controls the power supply to be turned off to prevent the composite laser cleaning head from overheating.

[0061] It should be noted that the control system can be a feedback loop component widely used in industrial control applications, such as a programmable memory, which generally stores instructions for performing operations such as logical operations, sequential control, timing, counting and arithmetic operations, and controls various types of mechanical equipment or operating processes through digital or analog input and output. The control system of the embodiment of the present application electrically connects the power supply, the laser source and the detection module 600 to achieve mutual cooperation between the power supply, the laser source and the detection module 600, which can be implemented by those skilled in the art based on the existing control module functions, and its control principle and control method are not described in detail here.

[0062] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A composite laser cleaning head, characterized in that: include: The cleaning body is provided with a laser inlet, a laser outlet and a mounting cavity, wherein the laser inlet and the laser outlet are both connected to the mounting cavity; A collimation module is inserted into the laser inlet and is used to connect the optical fiber; A reflection module is located in the installation cavity; A galvanometer module, at least a portion of which is located in the mounting cavity; A focusing module, installed in the laser outlet; A detection module, comprising a photosensitive element, wherein the photosensitive element is connected to the reflection module and is used to electrically connect to a control system; The collimating module, the reflecting module, the galvanometer module and the focusing module are arranged in sequence along the transmission direction of the laser to jointly define a laser path; The photosensitive element is configured to transmit a first signal to the control system when sensing light, so that the control system controls the power supply to be cut off when no light is indicated.

2. The composite laser cleaning head according to claim 1, characterized in that: The reflection module includes a reflection mirror seat and a reflection lens, the reflection mirror seat is connected to the cleaning body, the reflection mirror seat is provided with a first groove and a second groove, the first groove and the second groove are spaced apart, the reflection lens is located in the first groove, the photosensitive element is located in the second groove, and the collimating module includes a collimating lens, and along the first direction, the collimating lens and the reflection lens are spaced apart.

3. The composite laser cleaning head according to claim 1, characterized in that: The detection module further includes a temperature sensing element, the temperature sensing element is located in the installation cavity, and the temperature sensing element is spaced apart from the laser passage; The temperature sensing element is used to be electrically connected to the control system, and the temperature sensing element is configured to transmit a second signal to the control system so that the control system controls the power supply to be cut off when the value of the second signal is greater than a preset temperature value.

4. The composite laser cleaning head according to claim 1, characterized in that: The composite laser cleaning head also includes a first air knife assembly, which is connected to the cleaning body. The first air knife assembly is provided with an avoidance through hole and a plurality of first air holes. The inner peripheral walls of the avoidance through holes are distributed around the outer peripheral edge of the laser outlet. The extension lines of the openings of each of the first air holes intersect at a reference point, and the reference point is located on the side of the focusing module away from the mounting cavity.

5. The composite laser cleaning head according to claim 1, characterized in that: The composite laser cleaning head also includes a second air knife assembly, which is connected to the cleaning body. The second air knife assembly includes a second air hole, which is arranged toward a side of the focusing module away from the mounting cavity.

6. The composite laser cleaning head according to claim 1, characterized in that: The composite laser cleaning head also includes a dust suction component, which is connected to the cleaning body. The dust suction component includes a dust suction port, which faces the side of the cleaning body where the laser outlet is provided.

7. The composite laser cleaning head according to claim 1, characterized in that: The cleaning body is provided with a cooling inlet, a cooling outlet and a first channel, one end of the first channel is connected to the cooling inlet, and the other end of the first channel is connected to the cooling outlet. The cleaning body is also provided with a wiring cavity, and the first channel is located between the installation cavity and the wiring cavity.

8. The composite laser cleaning head according to claim 7, characterized in that: The first passage includes a first through section, a second through section and a third through section, the reflection module includes a reflector seat, the reflector seat is provided with a second passage, the first through section is connected to the cooling inlet, and the second through section is connected to the cooling outlet; Wherein, the first through section is also connected to the second channel, and the second channel is connected to the second through section, and the first through section, the second channel and the second through section together define a first cooling circuit; The first through section is also connected to the third through section, and the third through section is also connected to the second through section. The first through section, the second through section and the third through section together define a second cooling circuit.

9. The composite laser cleaning head according to claim 1, characterized in that: The cleaning body is provided with two laser inlets, the collimation module includes a continuous collimation mirror and a pulse collimation mirror, the continuous collimation mirror is arranged in one of the laser inlets, the pulse collimation mirror is arranged in the other laser inlet, the reflection module includes a first reflection mirror group and a second reflection mirror group, and the galvanometer module includes a first galvanometer group and a second galvanometer group; The continuous collimating mirror, the first reflecting mirror, the first galvanometer group and the focusing module jointly define a first laser path, and the pulse collimating mirror, the second reflecting mirror, the second galvanometer group and the focusing module jointly define a second laser path.

10. A composite laser cleaning device, characterized in that: include: Control systems; The composite laser cleaning head according to any one of claims 1 to 9, wherein the detection module is electrically connected to the control system.

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