Laser welding mechanism, laser-arc hybrid welding device and welding equipment

Abstract

This application discloses a laser welding mechanism, a laser-arc hybrid welding device, and welding equipment, belonging to the technical field of processing equipment. The laser welding mechanism includes a housing and optical components. The optical components include a laser, a first reflecting mirror, a second reflecting mirror, and a rotary driver. The laser can generate pulsed laser light. The first reflecting mirror has a first reflecting surface; the second reflecting mirror has a second reflecting surface. The rotary driver is used to drive the second reflecting mirror to rotate around a first axis, and to position the second reflecting surface in a working position parallel to the first reflecting surface and receiving the laser light reflected by the first reflecting surface. When the second reflecting surface is in the working position, the laser light reflected by it is reflected along the second axis. Since the second reflecting surface has a tendency to rotate around the first axis, the laser light reflected by the second reflecting surface will be deflected with the rotation of the second reflecting surface, thereby generating an oscillating laser and realizing laser oscillating welding.

Description

Technical Field

[0001] This application relates to the field of processing equipment technology, specifically to a laser welding mechanism, a laser-arc hybrid welding device, and welding equipment. Background Technology

[0002] Laser oscillation welding is a non-contact welding technology that uses a laser beam to rapidly heat the weld seam, melting the material and welding it. During the welding process, the laser beam irradiates the weld in a specific oscillation pattern. By controlling the oscillation of the laser beam, narrow weld seams with consistent depth can be produced. It has advantages such as high welding speed, high weld quality, a wide range of weldable materials, and no need for post-processing. In addition, laser oscillation welding can improve production efficiency, save labor time and costs, and reduce environmental pollution.

[0003] Currently, most laser oscillation solutions on the market achieve this by using a galvanometer motor to drive a reflector to oscillate back and forth. Unlike ordinary rotary motors, galvanometer motors cannot rotate; they can only deflect. The frequent acceleration and deceleration of the galvanometer motor causes it to overheat, thus affecting its lifespan. Furthermore, galvanometer motors are significantly more expensive than ordinary motors, and when the reflector is large, the oscillation frequency of the galvanometer motor is generally around 40Hz, which is insufficient for the requirements of laser oscillation welding.

[0004] Therefore, there is an urgent need to provide a laser welding mechanism to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a laser welding mechanism, a laser-arc hybrid welding device, and welding equipment, which has a high laser oscillation frequency and low cost.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a laser welding mechanism, including a housing and an optical assembly mounted on the housing, the optical assembly comprising:

[0008] A laser capable of generating pulsed laser light;

[0009] A first reflecting mirror, the first reflecting mirror having a first reflecting surface;

[0010] A second reflecting mirror, the second reflecting mirror having a second reflecting surface;

[0011] A rotary driver is used to drive the second reflector to rotate about a first axis and to position the second reflector in a working position that is parallel to the first reflector and receives the laser reflected by the first reflector.

[0012] When the second reflective surface is in the working position, the laser reflected by the second reflective surface is emitted along the second axis, which is perpendicular to the first axis.

[0013] As an optional embodiment of the laser welding mechanism, the number of the second reflective surfaces is at least two, and the at least two second reflective surfaces are arranged evenly around the periphery of the first axis.

[0014] As an optional embodiment of the laser welding mechanism, the angle between the first reflective surface and the first axis is an acute angle.

[0015] As an alternative to the laser welding mechanism, the laser emitted by the laser is emitted along a third axis, wherein the third axis is parallel to the second axis.

[0016] As an optional solution for the laser welding mechanism, the optical component further includes a beam shrinker. The laser, the beam shrinker, and the first reflector are spaced apart along the third axis. The laser emitted by the laser passes through the beam shrinker and then irradiates the first reflective surface.

[0017] As an optional embodiment of the laser welding mechanism, the optical component further includes a collimating lens located between the laser and the beam shrinking lens.

[0018] As an optional embodiment of the laser welding mechanism, the optical component further includes a focusing lens, which and the second reflecting mirror are spaced apart along the second axis, with the focusing lens located downstream of the second reflecting mirror.

[0019] As an optional embodiment of the laser welding mechanism, the optical assembly further includes a protective plate, with at least one of the protective plates disposed between the collimating lens and the laser; and / or

[0020] At least one of the protective plates is arranged downstream of the focusing lens along the second axis.

[0021] Secondly, this application provides a laser-arc hybrid welding apparatus, including an arc welding mechanism and a laser welding mechanism as described in any of the preceding claims, wherein the arc welding mechanism is rotatable relative to the laser welding mechanism about a second axis.

[0022] Thirdly, this application provides a welding device, including a robotic arm and a laser-arc hybrid welding device as described above, wherein the robotic arm is used to adjust the position of the welding end of the laser-arc hybrid welding device in space;

[0023] As an alternative to the welding equipment, the robotic arm includes:

[0024] The first swing drive mechanism has its output end connected to the laser welding mechanism and is used to drive the laser-arc composite welding device to swing around the fourth axis, which is parallel to the first axis.

[0025] The second swing drive mechanism has its output end connected to the first swing drive mechanism and is used to drive the first swing drive mechanism and the laser-arc composite welding device to swing around the fifth axis, which is perpendicular to the fourth axis and the second axis.

[0026] A rotary drive mechanism, the output end of which is connected to the second swing drive mechanism, is used to drive the second swing drive mechanism, the first swing drive mechanism and the laser-arc composite welding device to rotate around the second axis.

[0027] As an optional solution to the welding equipment, the arc welding mechanism includes:

[0028] Arc welding torch tip;

[0029] A rotating assembly, comprising a rotating body and a rotating actuator, wherein the rotating body is rotatably mounted on the outer side of the housing about a second axis, and the rotating actuator is used to drive the rotating body to rotate about the second axis;

[0030] A spatial position adjustment module is installed on the rotating body. The output end of the spatial position adjustment module is connected to the arc welding gun head and is used to adjust the relative position between the arc welding gun head and the laser welding gun head.

[0031] As an optional solution for the welding equipment, the rotating assembly further includes a first gear and a second gear. The first gear is connected to the output end of the rotating driver, and the second gear meshes with the first gear and is fixedly connected to the rotating body. The rotating driver drives the first gear to rotate, which enables the second gear to drive the rotating body to rotate around the second axis.

[0032] As an optional solution for the welding equipment, the spatial position adjustment module includes:

[0033] An angle adjustment component, the angle adjustment component being used to adjust the angle between the arc welding torch head and the laser welding torch head;

[0034] A first translation drive component, the output end of which is connected to the angle adjustment component, and is used to drive the angle adjustment component to move the arc welding gun head along a first direction;

[0035] A lifting drive assembly, the output end of which is connected to the first translation drive assembly, and is used to drive the first translation drive assembly to move the angle adjustment assembly and the arc welding gun head along the second direction;

[0036] The second translation drive component has its output end connected to the lifting drive component and is used to drive the lifting drive component to move the first translation drive component, the angle adjustment component and the arc welding gun head along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0037] As an optional solution for the welding equipment, the angle adjustment component includes:

[0038] A first mounting plate has a plurality of mounting holes spaced apart around the axis of the first mounting plate;

[0039] The second mounting plate is used to connect the arc welding gun head. The second mounting plate has an arc hole, the center of which coincides with the axis of the first mounting plate. Fasteners pass through the arc hole and are connected to the mounting hole. The second mounting plate can rotate relative to the first mounting plate about the axis of the first mounting plate.

[0040] As an optional solution for the welding equipment, the angle adjustment assembly further includes a mounting component, which is fixed to the second mounting plate and is used to mount the arc welding torch head.

[0041] As an optional embodiment of the welding equipment, the first translation drive component includes:

[0042] A first fixing member is used to fix it to the first mounting plate;

[0043] A first translation driver, the output end of which is connected to the first fixing member, and is used to drive the first fixing member to move along a horizontal first direction.

[0044] As an optional solution for the welding equipment, the lifting drive assembly includes:

[0045] The second fixing member is used to fix it to the first translation driver;

[0046] A lifting driver, the output end of which is connected to the second fixing member and is used to drive the second fixing member to move in a second direction.

[0047] As an alternative to the welding equipment, the second translation drive assembly includes:

[0048] The third fixing member is used to fix it to the lifting drive;

[0049] The second translation driver has its output end connected to the third fixing member and is used to drive the third fixing member to move in a third direction.

[0050] The beneficial effects of this application are as follows:

[0051] The laser welding mechanism provided in this application includes a housing and optical components. The optical components include a laser, a first reflecting mirror, a second reflecting mirror, and a rotary driver. Since the laser emitted by the laser is a pulsed laser, meaning the laser is emitted intermittently, it ensures that the laser emits laser light when the second reflecting mirror is in the working position and does not emit laser light when the second reflecting mirror is in the non-working position. Furthermore, when the second reflecting mirror is in the working position, it tends to rotate around a first axis under the drive of the rotary driver. At this time, the laser light reflected by the second reflecting mirror will be deflected as the second reflecting mirror rotates, thereby generating an oscillating laser and achieving laser oscillating welding. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0053] Figure 1 A schematic diagram of the welding equipment provided in this application is shown;

[0054] Figure 2 A schematic diagram of the laser welding mechanism provided in this application is shown;

[0055] Figure 3 It shows Figure 2 A cross-sectional schematic diagram of the laser welding mechanism;

[0056] Figure 4 It shows Figure 3 A schematic diagram of the optical path of a laser welding mechanism;

[0057] Figure 5A schematic diagram of the structure of the second reflector provided in this application is shown;

[0058] Figure 6 A schematic diagram of the laser-arc hybrid welding apparatus provided in this application is shown.

[0059] Figure 7 It shows Figure 6 Cross-sectional schematic diagram of the electric arc welding mechanism;

[0060] Figure 8 It shows Figure 6 A schematic diagram of the structure of the electric arc welding mechanism.

[0061] Figure label:

[0062] 100. Laser welding mechanism; 200. Arc welding mechanism; 300. First swing drive mechanism; 400. Second swing drive mechanism;

[0063] 1. Shell;

[0064] 21. Laser; 22. First reflecting mirror; 221. First reflecting surface; 23. Second reflecting mirror; 231. Second reflecting surface; 24. Rotary actuator; 25. Collimating lens; 26. Beam reducer; 27. Focusing lens; 28. Beam combiner; 29a. First protective plate; 29b. Second protective plate; 29c. Third protective plate; 29d. Fourth protective plate;

[0065] 3. Monitoring components;

[0066] 4. Laser welding torch head;

[0067] 5. Arc welding torch tip;

[0068] 6. Rotating assembly; 61. Rotating body; 62. Rotation driver; 63. First gear; 64. Second gear;

[0069] 71. First translation drive assembly; 711. First fixing member; 712. First translation driver; 72. Lifting drive assembly; 721. Second fixing member; 722. Lifting driver; 73. Second translation drive assembly; 731. Third fixing member; 732. Second translation driver; 74. Angle adjustment assembly; 741. First mounting plate; 742. Second mounting plate; 7421. Arc hole; 743. Mounting member. Detailed Implementation

[0070] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0071] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0072] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0073] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0074] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0075] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0076] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0077] Figure 1 A schematic diagram of the welding equipment provided in this application is shown. Figure 1 As shown, the welding equipment provided in this application includes a robotic arm and a laser-arc hybrid welding device. The robotic arm is used to adjust the position of the welding end of the laser-arc hybrid welding device in space. The laser-arc hybrid welding device includes a laser welding mechanism 100 and an arc welding mechanism 200, which can realize laser welding, arc welding or laser-arc hybrid welding of weld seams to meet various welding needs.

[0078] like Figure 1 As shown, for the convenience of explaining the structure of the welding equipment provided in this application, a first axis, a second axis, a third axis, a fourth axis, and a fifth axis are introduced as reference datums. The first axis is parallel to the fourth axis, the second axis is parallel to the third axis, and the fifth axis is perpendicular to both the first and second axes.

[0079] The robotic arm includes a first swing drive mechanism 300. The output end of the first swing drive mechanism 300 is connected to the laser welding mechanism 100 and is used to drive the laser-arc hybrid welding device to swing around the fourth axis. The position of the welding end of the laser welding mechanism 100 and the welding end of the arc welding mechanism 200 can be adjusted to achieve welding for welds at different positions and improve the flexibility of welding equipment operation.

[0080] The robotic arm also includes a second swing drive mechanism 400. The output end of the second swing drive mechanism 400 is connected to the first swing drive mechanism 300 and is used to drive the first swing drive mechanism 300 and the laser-arc composite welding device to swing around the fifth axis. The position of the welding end of the laser welding mechanism 100 and the welding end of the arc welding mechanism 200 can be adjusted to achieve welding for welds at different positions and improve the flexibility of welding equipment operation.

[0081] The robotic arm also includes a rotary drive mechanism. The output end of the rotary drive mechanism is connected to the second swing drive mechanism 400 and is used to drive the second swing drive mechanism 400, the first swing drive mechanism 300, and the laser-arc hybrid welding device to rotate around the second axis. This allows adjustment of the angle between the swing laser generated by the laser welding mechanism 100 and the weld seam, improving the welding effect. It should be noted that the welding effect is better when the swing laser is perpendicular to the weld seam than when the swing laser is parallel to the weld seam.

[0082] In this embodiment, the robotic arm may include only the first swing drive mechanism 300 and the second swing drive mechanism 400. In another embodiment, the robotic arm may further include the first swing drive mechanism 300, the second swing drive mechanism 400, and a rotation drive mechanism to achieve multi-directional adjustment of the welding ends of the laser welding mechanism 100 and the arc welding mechanism 200, thereby improving the operational flexibility of the welding equipment. In yet another embodiment, the robotic arm may further include any one of the first swing drive mechanism 300, the second swing drive mechanism 400, and the rotation drive mechanism; the specific design can be tailored to requirements and is not limited here.

[0083] Figure 2 A schematic diagram of the structure of the laser welding mechanism 100 provided in this application is shown. Figure 3 It shows Figure 2 A cross-sectional schematic diagram of the laser welding mechanism 100. (See diagram below.) Figures 2 to 3 As shown, the laser welding mechanism 100 includes a housing 1, an optical component and a laser welding gun head 4. The optical component and the laser welding gun head 4 are both mounted on the housing 1. The optical component is used to generate an oscillating laser, which is emitted from the laser welding gun head 4 to achieve laser oscillating welding.

[0084] In addition, the laser welding mechanism 100 also includes a monitoring component 3, which includes a camera and a lens. The camera can be an industrial CCD camera to monitor the laser generated by the optical components, making it easier for workers to perform welding operations.

[0085] Figure 4 It shows Figure 3 A schematic diagram of the optical path of the laser welding mechanism 100. (See diagram below.) Figure 4 Combination Figure 3As shown, the optical assembly includes a laser 21, a first reflector 22, a second reflector 23, and a rotary driver 24. The laser 21 is capable of generating pulsed laser light. The first reflector 22 has a first reflecting surface 221. The second reflector 23 has a second reflecting surface 231. The rotary driver 24 is used to drive the second reflector 23 to rotate around a first axis and to position the second reflecting surface 231 in a working position that is parallel to the first reflecting surface 221 and receives the laser light reflected by the first reflecting surface 221. When the second reflecting surface 231 is in the working position, the laser light reflected by it is reflected along a second axis. During the rotation of the second reflecting surface 231, the laser light reflected by it will oscillate.

[0086] This is because the laser emitted by laser 21 is a pulsed laser, meaning it is emitted intermittently. This ensures that laser 21 emits laser light when the second reflecting surface 231 is in the working position and does not emit laser light when it is in the non-working position. Furthermore, since the second reflecting surface 231 tends to rotate around the first axis when in the working position, the laser light reflected by it will be deflected as the second reflecting surface 231 rotates, thus generating an oscillating laser and achieving laser oscillating welding.

[0087] Understandably, in the working state of the laser welding mechanism 100, the frequency of the pulsed laser emitted by the laser 21 needs to match the rotational speed of the second reflecting mirror 23. When the second reflecting surface 231 is in the working position, the laser 21 emits laser light, the first reflecting surface 221 receives the laser light and reflects it back to the second reflecting surface 231, at which time the laser welding mechanism 100 generates an oscillating laser. When the second reflecting surface 231 is in the non-working position, the laser 21 does not emit laser light, and at this time, the laser welding mechanism 100 does not generate an oscillating laser. The relationship between the frequency of the pulsed laser emitted by the laser 21 and the rotational speed of the second reflecting mirror 23 can be obtained and verified through numerical calculation and experimental simulation, and will not be elaborated here.

[0088] The angle between the first reflecting surface 221 and the first axis is an acute angle. That is, when the second reflecting surface 231 is in the working position, the angle between the second reflecting surface 231 and the first axis is also an acute angle. In this embodiment, the angle between the first reflecting surface 221 and the first axis is 45°, which is convenient for processing and design. In other embodiments, the angle between the first reflecting surface 221 and the first axis can be any value such as 30°, 50°, 60°, 75°, etc., and is not limited here. In one embodiment, the number of second reflecting surfaces 231 can be any number, such as any number from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. It should be noted that when there is only one second reflective surface 231, the second reflector 23 can be formed by making a diagonal cut on a cylinder to form the second reflective surface 231; when there are two second reflective surfaces 231, the second reflector 23 can be formed by making two diagonal cuts on a cylinder to form two symmetrically arranged second reflective surfaces 231; when there are three or more second reflective surfaces 231, the second reflector 23 is in the shape of a frustum pyramid, and the facets are the second reflective surfaces 231.

[0089] Figure 5 A schematic diagram of the structure of the second reflector 23 provided in this application is shown. Figure 5 As shown, there are six second reflective surfaces 231, which are evenly arranged around the periphery of the first axis. When the laser irradiates a second reflective surface 231, the second reflective surface 231 rotates around the first axis under the action of the rotary driver 24, thereby causing the laser to deflect and oscillate. The time the laser acts within one of the second reflective surfaces 231 determines the amplitude of the laser oscillation, and the rotational speed of the second reflective mirror 23 driven by the rotary driver 24 determines the frequency of the laser oscillation. For example, if the laser emission time is 10ms during the working position of one of the second reflective surfaces 231, and the laser stops during the transition between two adjacent second reflective surfaces 231, and then emits light again for 10ms during the working position of the next second reflective surface 231, the laser will frequently turn on and off in a cycle, thus achieving frequent laser oscillation. In other embodiments, the number of second reflective surfaces 231 can also be one, two, three, or more, which will not be illustrated here.

[0090] For example, when the rotary driver 24 uses a servo motor with a speed of 3000 r / min (50 r / s), if there is only one second reflecting surface 231, the laser oscillates 50 times per second, or 50 Hz. When there are six second reflecting surfaces 231, the oscillation frequency is 50 Hz * 6, or 300 Hz, which is significantly higher than the existing galvanometer motor's frequency of 40 Hz. In summary, fewer second reflecting surfaces 231 result in a larger laser oscillation amplitude but a lower frequency; more second reflecting surfaces 231 result in a smaller laser oscillation amplitude but a higher frequency. The specific choice depends on the application; further examples will not be provided here.

[0091] See also Figures 3 to 4 As shown, the laser emitted by laser 21 is emitted along a third axis, which is parallel to the second axis. For example, the laser emitted by laser 21 is a point source with a Gaussian energy distribution. The optical assembly also includes a collimating lens 25, which is used to focus the point source into a parallel beam. The collimating lens 25 can be a collimating lens from the prior art, which will not be described in detail here.

[0092] The optical components also include a beam reducer 26, and a collimating lens 25 is located between the laser 21 and the beam reducer 26, i.e., the laser 21, collimating lens 25, and beam reducer 26 are spaced apart along a third axis. The laser emitted by the laser 21 forms a beam after passing through the collimating lens 25, and then the beam passes through the beam reducer 26 and illuminates the first reflecting surface 221. The beam reducer 26 is used to reduce the diameter of the beam to a smaller diameter beam. In this embodiment, there are two beam reducers 26, which are spaced apart along the third axis. In other embodiments, the number of beam reducers 26 can be any number, such as one, three, or four, and is not limited here.

[0093] In one embodiment, the first reflector 22 may be a reflective plane copper mirror, which can be cooled by water to reduce the temperature of the reflective plane copper mirror and ensure stable operation under high-power laser irradiation.

[0094] The optical assembly also includes a focusing mirror 27, which and a second reflecting mirror 23 are spaced apart along a second axis, with the focusing mirror 27 located downstream of the second reflecting mirror 23. The focusing mirror 27 is used to focus the laser reflected by the second reflecting surface 231, and the focused laser can oscillate to achieve laser oscillation welding.

[0095] In addition, the optical components also include protective plates. At least one protective plate is arranged between the collimating lens 25 and the laser 21; at least one protective plate is arranged downstream of the focusing lens 27 along the second axis. In this embodiment, there are two protective plates between the collimating lens 25 and the laser 21, namely a first protective plate 29a and a second protective plate 29b. There are two protective plates downstream of the focusing lens 27, namely a third protective plate 29c and a fourth protective plate 29d. The first protective plate 29a, the second protective plate 29b, the third protective plate 29c, and the fourth protective plate 29d are used to prevent internal lens contamination and improve the welding quality of the laser welding mechanism 100.

[0096] Figure 6 A schematic diagram of the laser-arc hybrid welding apparatus provided in this application is shown. Figure 6 As shown, the arc welding mechanism 200 is rotatable relative to the laser welding mechanism 100 about a second axis. Specifically, the arc welding mechanism 200 includes an arc welding torch head 5 and a rotating assembly 6. The rotating assembly 6 includes a rotating body 61 and a rotating driver 62. The arc welding torch head 5 is connected to the rotating body 61. The rotating body 61 is rotatably mounted on the outer side of the housing 1 about the second axis. The rotating driver 62 drives the rotating body 61 to rotate about the second axis, thus realizing the rotation of the arc welding torch head 5 about the second axis. For example, the arc welding torch head 5 can be an existing arc welding torch head, and the working principle of the arc welding torch head 5 will not be described in detail here.

[0097] Figure 7 It shows Figure 6 A cross-sectional schematic diagram of the arc welding mechanism 200. (See diagram below.) Figure 7 As shown, the rotating assembly 6 also includes a first gear 63 and a second gear 64. The first gear 63 is connected to the output end of the rotating driver 62, and the second gear 64 meshes with the first gear 63 and is fixedly connected to the rotating body 61. The rotating driver 62 drives the first gear 63 to rotate, which in turn causes the second gear 64 to drive the rotating body 61 to rotate around the second axis. For example, the rotating driver 62 can be a servo motor, which has advantages such as high positioning accuracy, speed control, and fast dynamic response.

[0098] Figure 8 It shows Figure 6 A schematic diagram of the structure of the electric arc welding mechanism 200. (See diagram below.) Figure 8 As shown, the arc welding mechanism 200 also includes a spatial position adjustment module, which is installed on the rotating body 61. The output end of the spatial position adjustment module is connected to the arc welding gun head 5 and is used to adjust the relative position between the arc welding gun head 5 and the laser welding gun head 4.

[0099] In this embodiment, the spatial position adjustment module includes an angle adjustment component 74, a first translation drive component 71, a lifting drive component 72, and a second translation drive component 73. The angle adjustment component 74 is used to adjust the angle between the arc welding torch head 5 and the laser welding torch head 4. The output end of the first translation drive component 71 is connected to the angle adjustment component 74 and is used to drive the angle adjustment component 74 to move the arc welding torch head 5 along a first direction. The output end of the lifting drive component 72 is connected to the first translation drive component 71 and is used to drive the first translation drive component 71 to move the angle adjustment component 74 and the arc welding torch head 5 along a second direction. The output end of the second translation drive component 73 is connected to the lifting drive component 72 and is used to drive the lifting drive component 72 to move the first translation drive component 71, the angle adjustment component 74, and the arc welding torch head 5 along a third direction. The first direction, the second direction, and the third direction are all perpendicular to each other. The first direction is parallel to the fifth axis, the second direction is parallel to the second axis, and the third direction is parallel to the first axis.

[0100] In other embodiments, the spatial position adjustment module may also consist of any one, two, or three of the angle adjustment component 74, the first translation drive component 71, the lifting drive component 72, and the second translation drive component 73. The specific design can be tailored to the specific needs and is not limited herein.

[0101] The angle adjustment assembly 74 includes a first mounting plate 741 and a second mounting plate 742. The first mounting plate 741 has a plurality of mounting holes spaced apart around its axis. The second mounting plate 742 is used to connect the arc welding torch head 5. The second mounting plate 742 has an arc-shaped hole 7421, the center of which coincides with the axis of the first mounting plate 741. Fasteners pass through the arc-shaped hole 7421 and connect to the mounting holes. The second mounting plate 742 can rotate relative to the first mounting plate 741 around its axis. When it is necessary to adjust the relative angle between the arc welding torch head 5 and the laser welding torch head 4, the fasteners can be loosened first, then the second mounting plate 742 can be rotated to adjust the arc welding torch head 5 to the desired position, and then the fasteners can be tightened. For example, the fasteners can be bolts or bolt-nut assemblies, which are not limited here.

[0102] Furthermore, the angle adjustment assembly 74 also includes a mounting member 743, which is fixed to the second mounting plate 742 and is used to mount the arc welding torch head 5. Specifically, the mounting member 743 has a mounting hole in which the arc welding torch head 5 passes. This design not only facilitates the installation of the arc welding torch head 5, but also, by adjusting the structure of the mounting member 743, avoids interference between the arc welding torch head 5 and the structure of the spatial position adjustment module.

[0103] The first translation drive assembly 71 includes a first fixing member 711 and a first translation driver 712. The first fixing member 711 is fixedly connected to the first mounting plate 741. The output end of the first translation driver 712 is connected to the first fixing member 711 and is used to drive the first fixing member 711 to move in a horizontal first direction. The first fixing member 711 can drive the first mounting plate 741 to move in the first direction, thereby driving the second mounting plate 742 connected to the first mounting plate 741 and the arc welding torch head 5 to move in the first direction.

[0104] The lifting drive assembly 72 includes a second fixing member 721 and a lifting driver 722. The second fixing member 721 is fixedly connected to the first translation driver 712. The output end of the lifting driver 722 is connected to the second fixing member 721 and is used to drive the second fixing member 721 to move along the second direction. The second fixing member 721 can drive the first translation drive assembly 71, the angle adjustment assembly 74 and the arc welding gun head 5 to move along the second direction.

[0105] The second translation drive assembly 73 includes a third fixing member 731 and a second translation driver 732. The third fixing member 731 is used to be fixedly connected to the lifting driver 722. The output end of the second translation driver 732 is connected to the third fixing member 731 and is used to drive the third fixing member 731 to move in a third direction. The third fixing member 731 can drive the lifting drive assembly 72, the first translation drive assembly 71, the angle adjustment assembly 74, and the arc welding gun head 5 to move in a third direction.

[0106] In this embodiment, the arc welding mechanism 200 can adjust the position of the arc welding gun head 5 through the spatial position adjustment module, so as to realize three welding modes: collaborative operation of the arc welding gun head 5 and the laser welding gun head 4, independent operation of the arc welding gun head 5, and independent operation of the laser welding gun head 4, thereby improving the flexibility of the welding equipment.

[0107] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A laser welding mechanism, characterized in that, Includes a housing (1) and an optical assembly (2) mounted on the housing (1), the optical assembly (2) comprising: Laser (21), which is capable of generating pulsed laser; The first reflecting mirror (22) has a first reflecting surface (221); The second reflector (23) has a second reflecting surface (231); A rotary driver (24) is used to drive the second reflector (23) to rotate around the first axis. During the rotation of the second reflector (231), the laser reflected by it can swing and make the second reflector (231) have a working position that is parallel to the first reflector (221) and receives the laser reflected by the first reflector (221). When the second reflective surface (231) is in the working position, the laser reflected by the second reflective surface (231) is emitted along the second axis, which is perpendicular to the first axis; The number of the second reflective surfaces (231) is at least two, and the at least two second reflective surfaces (231) are arranged evenly around the periphery of the first axis; The angle between the first reflecting surface (221) and the first axis is an acute angle.

2. The laser welding mechanism according to claim 1, characterized in that, The laser emitted by the laser (21) is emitted along a third axis, wherein the third axis is parallel to the second axis.

3. The laser welding mechanism according to claim 2, characterized in that, The optical component (2) further includes a beam shrinker (26). The laser (21), the beam shrinker (26) and the first reflector (22) are spaced apart along the third axis. The laser emitted by the laser (21) illuminates the first reflective surface (221) after passing through the beam shrinker (26).

4. The laser welding mechanism according to claim 3, characterized in that, The optical component (2) also includes a collimating lens (25) located between the laser (21) and the beam shrinking lens (26).

5. The laser welding mechanism according to claim 4, characterized in that, The optical component (2) further includes a focusing lens (27), which and the second reflecting mirror (23) are spaced apart along the second axis, and the focusing lens (27) is located downstream of the second reflecting mirror (23).

6. The laser welding mechanism according to claim 5, characterized in that, The optical component (2) further includes a protective sheet, at least one of which is disposed between the collimating lens (25) and the laser (21); and / or At least one of the protective plates is arranged downstream of the focusing lens (27) along the second axis.

7. A laser-arc hybrid welding device, characterized in that, It includes an arc welding mechanism (200) and a laser welding mechanism as described in any one of claims 1-6, wherein the arc welding mechanism (200) is rotatable about the second axis relative to the laser welding mechanism.

8. A welding device, characterized in that, It includes a robotic arm and the laser-arc hybrid welding device as described in claim 7, wherein the robotic arm is used to adjust the position of the welding end of the laser-arc hybrid welding device in space.

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