Laser welding device for edge covering of curved-surface metal plate

Abstract

The utility model relates to a laser welding device for curved surface metal plate edge covering, which comprises a multi-axis moving assembly, a laser welding head and a distance detector, the multi-axis moving assembly is connected with the laser welding head, and the distance detector is connected with the laser welding head through an adjustable support module. The distance detector is located on the side, away from the metal plate, of the edge covering plate. The multi-axis moving assembly drives the laser welding head and the distance detector to move synchronously, so that the relative distance between the distance detector and the edge covering plate is kept unchanged all the time, and at the moment, welding laser of the laser welding head points to a curve welding seam between the metal plate and the edge covering plate all the time. Compared with the prior art, by controlling the distance detector and the edge covering plate to be kept at a fixed distance, it is guaranteed that laser of the laser welding head is always aligned with a curve welding seam, the laser welding device can be suitable for curved surfaces of different shapes and has precise welding tracks, and the welding quality and the welding efficiency are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of laser welding, in particular to a laser welding device used for edging curved metal plates. Background Art

[0002] In the metal processing field, particularly in the automotive, appliance, and aerospace industries, laser welding of metal sheets is widely used due to its high precision, high-strength connection, and excellent appearance quality. This process primarily uses the high temperature of the laser beam to rapidly melt and solidify the metal sheet and the edging material (such as metal strips and frames) at the contact interface, thus achieving a strong bond, meeting structural strength requirements while enhancing the product's aesthetics.

[0003] However, traditional laser welding hemming technology faces numerous challenges in its implementation. Currently, the most widely used methods rely on manually operated welding robots or handheld welding heads. Specifically, due to the diverse welding positions and the varying shapes of the hemming materials, multiple welding operations are often required to complete the hemming process for each metal plate. This is especially true for hemming curved metal plates, where the welding head must move in multiple directions to adapt to the curvature of the metal plate. This process not only increases worker workload but also significantly reduces welding accuracy and efficiency due to frequent adjustments.

[0004] Therefore, it is necessary to design a laser welding device for the edging of curved metal plates so that it has a precise welding trajectory, thereby improving the welding quality and welding efficiency. Utility Model Content

[0005] The purpose of the present invention is to overcome the defects of the prior art and to provide a laser welding device for edge wrapping of curved metal plates, thereby improving welding quality and welding efficiency.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A laser welding device for hemming curved metal plates, comprising a multi-axis moving assembly, a laser welding head, and a distance detector. The multi-axis moving assembly is connected to the laser welding head and is used to drive the laser welding head to move along the curved weld between the metal plate and the hemming plate. The distance detector is connected to the laser welding head via an adjustable bracket module and is located on the side of the hemming plate away from the metal plate.

[0008] The multi-axis moving assembly drives the laser welding head and the distance detector to move synchronously, so that the relative distance between the distance detector and the edging plate remains unchanged. At this time, the welding laser of the laser welding head always points to the curved weld between the metal plate and the edging plate.

[0009] In one embodiment, the adjustable bracket module includes a first connecting unit and a second connecting unit connected to each other, the first connecting unit includes a rotational degree of freedom, the second connecting unit includes a movement degree of freedom, the first connecting unit is connected to a distance detector or a laser welding head, and the second connecting unit is correspondingly connected to the laser welding head or the distance detector.

[0010] In one embodiment, the first connecting unit includes a first connecting arm and a second connecting arm, one end of the first connecting arm is connected to the laser welding head, and the other end is rotatably connected to one end of the second connecting arm along a horizontal axis, and the other end of the second connecting arm is connected to the distance detector.

[0011] In one embodiment, the second connection unit includes a telescopic rod, one end of the telescopic rod is connected to the first connection unit, and the other end is connected to the distance detector.

[0012] In one embodiment, the first connection unit and the second connection unit are spherically connected.

[0013] In one embodiment, the adjustable bracket module also includes a third connecting unit, which includes a clamping head, a connecting shaft and an adjusting member. The clamping head is connected to the first connecting unit or the second connecting unit, the connecting shaft passes through the clamping head and is connected to the distance detector, and the adjusting member is used to adjust the opening of the clamping head.

[0014] In one embodiment, the clamping head includes two clamping parts, a clamping hole is provided between the two clamping parts, and the connecting shaft passes through the clamping hole.

[0015] In one embodiment, the multi-axis moving assembly includes an x-axis moving mechanism, a y-axis moving mechanism, and a z-axis moving mechanism that are interconnected, and are used to drive the laser welding head to move along the x-axis, y-axis, and z-axis, respectively, wherein the x-axis direction is parallel to the welding direction of the metal plate.

[0016] In one embodiment, the y-axis moving mechanism includes a fast moving mechanism and a precise moving mechanism, the fast moving mechanism is connected to the x-axis moving mechanism and the z-axis moving mechanism respectively, and the z-axis moving mechanism is connected to the laser welding head through the precise moving mechanism.

[0017] In one embodiment, the x-axis movement mechanism includes an x-axis movement track and an x-axis slider, and the x-axis slider is in sliding cooperation with the x-axis movement track; the y-axis movement mechanism includes a y-axis movement track and a y-axis slider, and the y-axis slider is in sliding cooperation with the y-axis movement track; the z-axis movement mechanism includes a z-axis movement track and a z-axis slider, and the z-axis slider is in sliding cooperation with the z-axis movement track;

[0018] The x-axis slider is connected to the y-axis moving track, the y-axis slider is connected to the z-axis moving track, and the z-axis slider is connected to the laser welding head.

[0019] In one embodiment, the multi-axis moving component is a six-axis robotic arm.

[0020] In one embodiment, a visual sensor is provided on the laser welding head. The visual sensor is located on the side of the distance detector and is used to photograph the laser welding head, the distance sensor and the metal plate.

[0021] In one embodiment, a searchlight is provided on the laser welding head, and the searchlight is located on the side of the distance detector.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] 1. The laser welding device is provided with a multi-axis moving component to drive the laser welding head to move along the curved weld, thereby improving the flexibility of the movement of the laser welding head. In order to align the laser of the laser welding head with the curved weld for welding, the laser welding device is also provided with a distance detector. Before the laser welding head works, the relative position of the distance detector and the curved surface can be adjusted by the adjustable bracket module to adapt to curved surfaces of different inclinations or shapes. The distance detector is connected to the laser welding head, that is, the distance between the distance detector and the laser welding head remains unchanged. The distance between the monitoring distance detector and the edging plate is the horizontal distance between the monitoring laser welding head laser and the curved weld. Therefore, controlling the distance detector and the edging plate to remain at a fixed distance can ensure that the laser of the laser welding head is always aligned with the curved weld between the metal plate and the edging plate, so that the laser welding device can be applied to curved welds of different shapes, has a precise welding trajectory, and effectively improves welding quality and welding efficiency.

[0024] 2. The first connecting unit is provided with a first connecting arm and a second connecting arm to connect the laser welding head and the distance detector. Since the first connecting arm and the second connecting arm are connected by rotation along the horizontal axis, the second connecting arm can drive the distance detector to move in a circle along the horizontal axis, thereby changing the vertical and horizontal distances between the distance detector and the curved surface, so as to adapt to curved surfaces of different shapes.

[0025] 3. The second connecting unit is provided with a telescopic rod, and the distance detector can realize telescopic movement relative to the laser welding head. At the same time, the first connecting unit and the second connecting unit are spherically connected, and the second connecting unit can rotate along the center of the ball relative to the first connecting unit. Therefore, the telescopic rod can be extended and retracted in any direction. The relative position of the distance detector and the curved surface of the metal plate has a high degree of freedom in adjustment, a simple structure, and a wider range of applicability to curved surface shapes.

[0026] 4. The adjustable bracket module is further provided with a third connecting unit, which includes a clamping head, a connecting shaft and an adjusting member. The connecting shaft passes through the clamping head, and the adjusting member can adjust the opening of the clamping head. Therefore, when the opening of the clamping head is large, the connecting shaft can drive the distance detector closer to or away from the clamping head, and can also drive the distance detector to rotate around the axis, thereby adding a degree of freedom of movement and rotation to the distance detector, thereby improving the flexibility of adjusting the relative position of the distance detector and the curved surface.

[0027] 5. The multi-axis moving assembly includes an interconnected x-axis moving mechanism, a y-axis moving mechanism, and a z-axis moving mechanism. During the welding process, the multi-axis moving assembly can drive the laser welding head to move along the x-axis, y-axis, and z-axis, and adjust the up-down, left-right, and front-back positions of the laser welding head and the metal plate. The laser welding head can move more flexibly along the curved surface and has a wider range of applicability to curved surface shapes.

[0028] 6. The fast moving mechanism and the precise moving mechanism that move along the y-axis are both used to adjust the y-axis distance between the laser welding head and the metal plate. The fast moving mechanism can drive the laser welding head to move quickly close to the metal plate with a faster moving speed, and the precise moving mechanism can drive the laser welding head to move precisely with higher alignment accuracy.

[0029] 7. The visual sensor is connected to the laser welding head and is set on the side of the distance detector. Therefore, during the welding process, the visual sensor can move with the laser welding head and observe the distance between the laser welding head, the distance detector and the curved surface at any time, avoiding distortion of the detection results of the distance detector or other unexpected situations, which is conducive to improving the safety and accuracy of the laser welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional diagram of the laser welding device in the present invention.

[0031] Figure 2 It is a left view of the laser welding device in the present utility model.

[0032] Figure 3 It is a right view of the laser welding device in this utility model.

[0033] Figure 4 For this utility model Figure 3 A partial enlarged view of the laser welding device.

[0034] Figure 5 For this utility model Figure 1 A partial enlarged view of the laser welding device.

[0035] Figure 6 This is a first perspective view of the mid-range detector of the present invention.

[0036] Figure 7 This is a second perspective view of the mid-range detector of the present invention.

[0037] Figure numerals: 100, laser welding device; 10, multi-axis moving assembly; 11, x-axis moving mechanism; 111, x-axis moving track; 112, x-axis slider; 12, y-axis moving mechanism; 121, fast moving mechanism; 122, precise moving mechanism; 123, y-axis moving track; 124, y-axis slider; 13, z-axis moving mechanism; 131, z-axis moving track; 132, z-axis slider; 20, laser welding head; 21, laser; 30, distance detector; 31, first connecting arm; 32, second connecting arm; 33, telescopic rod; 331, telescopic rod fixing member; 34, transition member; 35, clamping head; 36, clamping hole; 37, connecting shaft; 38, adjusting member; 40, visual sensor; 50, workbench; 51, workpiece support; 52, roller; 53, support leg; 54, limit plate; 60, metal plate; 70, edging plate. DETAILED DESCRIPTION

[0038] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0039] The laser welding device 100 for hemming curved metal plates in some embodiments will be described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 、 Figure 2 and Figure 3 As shown, in one embodiment, a laser welding device 100 for hemming curved metal plates is provided, comprising a multi-axis moving assembly 10, a laser welding head 20, and a distance detector 30. The multi-axis moving assembly 10 is connected to the laser welding head 20 and is used to drive the laser welding head 20 to move along the curved weld between the metal plate 60 and the hemming plate 70. The distance detector 30 is connected to the laser welding head 20 via an adjustable bracket module. The distance detector 30 is located on the side of the hemming plate 70 away from the metal plate 60.

[0041] The multi-axis moving assembly 10 drives the laser welding head 20 and the distance detector 30 to move synchronously, so that the relative distance between the distance detector 30 and the edging plate 70 remains unchanged. At this time, the welding laser 21 of the laser welding head 20 always points to the curved weld between the metal plate 60 and the edging plate 70.

[0042] The laser welding device 100 is provided with a multi-axis moving component 10 to drive the laser welding head 20 to move along the curved weld, thereby improving the flexibility of the movement of the laser welding head 20. In order to align the laser 21 of the laser welding head 20 with the curved weld for welding, the laser welding device 100 is further provided with a distance detector 30. Before the laser welding head 20 works, the relative position of the distance detector 30 and the curved surface can be adjusted by the adjustable bracket module to adapt to curved surfaces of different inclinations or shapes. The distance detector 30 is connected to the laser welding head 20, that is, the distance between the distance detector 30 and the laser welding head 20 remains unchanged. The distance between the monitoring distance detector 30 and the edge plate 70 is the horizontal distance between the laser 21 of the monitoring laser welding head 20 and the curved weld. Therefore, by controlling the distance detector 30 and the edge plate 70 to remain at a fixed distance, it is possible to ensure that the laser 21 of the laser welding head 20 is always aligned with the curved weld between the metal plate 60 and the edge plate 70, so that the laser welding device 100 can be applied to curved welds of different shapes, has a precise welding trajectory, and effectively improves welding quality and welding efficiency.

[0043] After welding is initiated, the multi-axis motion assembly 10 drives the laser welding head 20 and the distance detector 30 to move synchronously, ensuring that the distance detector 30 is always at a set fixed distance from the edge plate 70. This allows the welding laser 21 of the laser welding head 20 to consistently weld the curved edge. The multi-axis motion assembly 10, which uses distance measurement data feedback from the distance detector 30, is a well-established technology and will not be further elaborated in this embodiment.

[0044] Specifically, if Figure 4 、 Figure 5 and Figure 7 As shown, in one embodiment, the adjustable bracket module includes a first connecting unit and a second connecting unit connected to each other, the first connecting unit includes a rotational degree of freedom, the second connecting unit includes a movement degree of freedom, the first connecting unit is connected to the distance detector 30 or the laser welding head 20, and the second connecting unit is correspondingly connected to the laser welding head 20 or the distance detector 30.

[0045] The first connecting unit includes a first connecting arm 31 and a second connecting arm 32. One end of the first connecting arm 31 is connected to the laser welding head 20, and the other end is rotatably connected to one end of the second connecting arm 32 along a horizontal axis. The other end of the second connecting arm 32 is connected to the distance detector 30. The horizontal axis is parallel to the welding direction of the metal plate 60.

[0046] The first connecting unit is provided with a first connecting arm 31 and a second connecting arm 32 to connect the laser welding head 20 and the distance detector 30. Since the first connecting arm 31 and the second connecting arm 32 are rotatably connected along the horizontal axis, the second connecting arm 32 can drive the distance detector 30 to move in a circular motion along the horizontal axis, thereby changing the vertical and horizontal distances between the distance detector 30 and the curved surface, so as to adapt to curved surfaces of different shapes.

[0047] Further, if Figure 6 and Figure 7 As shown, in one embodiment, the second connection unit includes a telescopic rod 33 , one end of the telescopic rod 33 is connected to the first connection unit, and the other end is connected to the distance detector 30 .

[0048] And, as Figure 6 and Figure 7 As shown, in one embodiment, the first connecting unit and the second connecting unit are spherically connected. In this specific embodiment, one end of the telescopic rod 33 is provided with a transition piece 34, and the telescopic rod 33 is connected to the second connecting arm 32 through the transition piece 34.

[0049] The second connecting unit is provided with a telescopic rod 33, and the distance detector 30 can realize telescopic movement relative to the laser welding head 20. At the same time, the first connecting unit and the second connecting unit are spherically connected, and the second connecting unit can rotate along the center of the sphere relative to the first connecting unit. Therefore, the telescopic rod 33 can be extended and retracted in any direction. The relative position of the distance detector 30 and the curved surface of the metal plate 60 has a high degree of freedom in adjustment, a simple structure, and a wider range of applicability to curved surface shapes.

[0050] Furthermore, the adjustable bracket module also includes a third connecting unit, which includes a clamping head 35, a connecting shaft 37 and an adjusting member 38. The clamping head 35 is connected to the first connecting unit or the second connecting unit. The connecting shaft 37 passes through the clamping head 35 and is connected to the distance detector 30. The adjusting member 38 is used to adjust the opening of the clamping head 35.

[0051] The clamping head 35 includes two clamping parts, a clamping hole 36 is defined between the two clamping parts, and a connecting shaft 37 is passed through the clamping hole 36 .

[0052] In this specific embodiment, the adjustment member 38 includes a bolt and a knob connected to each other. The bolt passes through one clamping member and connects to another clamping member. Rotating the knob can rotate the bolt, and the bolt makes the two clamping members move closer to or away from each other, thereby adjusting the size of the clamping hole 36.

[0053] The adjustable bracket module is further provided with a third connecting unit, which includes a clamping head 35, a connecting shaft 37 and an adjusting member 38. The connecting shaft 37 passes through the clamping head 35, and the adjusting member 38 can adjust the opening of the clamping head 35. Therefore, when the opening of the clamping head 35 is large, the connecting shaft 37 can drive the distance detector 30 to move closer to or away from the clamping head 35, and can also drive the distance detector 30 to rotate around the axis, thereby adding a degree of freedom of movement and a degree of freedom of rotation to the distance detector 30, thereby improving the flexibility of adjusting the relative position of the distance detector 30 and the curved surface.

[0054] Further, if Figure 6 and Figure 7 As shown, in one embodiment, the telescopic rod 33 includes a fixed rod and a movable rod. The fixed rod is provided with a telescopic rod fixing member 331. The telescopic rod fixing member 331 passes through the fixed rod and abuts the movable rod, which is used to keep the fixed rod and the movable rod relatively stationary, thereby maintaining the length of the telescopic rod 33. The telescopic rod fixing member 331 is a fixing bolt that is threadedly connected to the fixed rod. When the fixing bolt is rotated to abut the movable rod, the length of the telescopic rod 33 remains unchanged. When the fixing bolt is rotated away from the movable rod, the length of the telescopic rod 33 changes.

[0055] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, in one embodiment, the multi-axis moving assembly 10 includes an x-axis moving mechanism 11, a y-axis moving mechanism 12 and a z-axis moving mechanism 13 that are interconnected, and is used to drive the laser welding head 20 to move along the x-axis, y-axis and z-axis respectively, wherein the x-axis direction is parallel to the welding direction of the metal plate 60.

[0056] The multi-axis moving assembly 10 includes an x-axis moving mechanism 11, a y-axis moving mechanism 12 and a z-axis moving mechanism 13 that are interconnected. During the welding process, the multi-axis moving assembly 10 can drive the laser welding head 20 to move along the x-axis, y-axis and z-axis, and adjust the up and down, left and right and front and back positions of the laser welding head 20 and the metal plate 60. The laser welding head 20 moves more flexibly along the curved surface and has a wider range of applicability to curved surface shapes.

[0057] Further, if Figure 1 、 Figure 2 and Figure 3As shown, in one embodiment, the y-axis moving mechanism 12 includes a rapid moving mechanism 121 and a precise moving mechanism 122. The rapid moving mechanism 121 is connected to the x-axis moving mechanism 11 and the z-axis moving mechanism 13, respectively. The z-axis moving mechanism 13 is connected to the laser welding head 20 via the precise moving mechanism 122. The rapid moving mechanism 121 and the precise moving mechanism 122, which move along the y-axis, are both used to adjust the y-axis distance between the laser welding head 20 and the metal plate 60. The rapid moving mechanism 121 can drive the laser welding head 20 to move quickly closer to the metal plate 60, resulting in a faster movement speed, while the precise moving mechanism 122 can drive the laser welding head 20 to move precisely, resulting in higher alignment accuracy.

[0058] In this specific embodiment, the fast moving mechanism 121 includes a y-axis fast track and a y-axis fast slider, the precise moving mechanism 122 includes a y-axis precise track and a y-axis precise slider, and the x-axis slider 112 is connected to the y-axis fast track, the y-axis fast slider is connected to the z-axis moving track 131, the z-axis slider 132 is connected to the y-axis precise track, and the y-axis precise slider is connected to the laser welding head 20.

[0059] Further, if Figure 1 、 Figure 2 and Figure 3 As shown, in one embodiment, the x-axis moving mechanism 11 includes an x-axis moving rail 111 and an x-axis slider 112, and the x-axis slider 112 is slidably matched with the x-axis moving rail 111; the y-axis moving mechanism 12 includes a y-axis moving rail 123 and a y-axis slider 124, and the y-axis slider 124 is slidably matched with the y-axis moving rail 123; the z-axis moving mechanism 13 includes a z-axis moving rail 131 and a z-axis slider 132, and the z-axis slider 132 is slidably matched with the z-axis moving rail 131;

[0060] The x-axis slider 112 is connected to the y-axis moving track 123 , the y-axis slider 124 is connected to the z-axis moving track 131 , and the z-axis slider 132 is connected to the laser welding head 20 .

[0061] Optionally, in one embodiment, the multi-axis moving assembly 10 includes a six-axis robotic arm.

[0062] Specifically, if Figure 1 、 Figure 4 and Figure 7As shown, in one embodiment, the laser welding head 20 is provided with a vision sensor 40, which is located on the side of the distance detector 30 and is used to photograph the laser welding head 20, the distance sensor, and the metal plate 60. The vision sensor 40 is connected to the laser welding head 20 and is located on the side of the distance detector 30. Therefore, during the welding process, the vision sensor 40 can move with the laser welding head 20 and observe the distance between the laser welding head 20, the distance detector 30, and the curved surface at any time. This avoids distortion of the detection results of the distance detector 30 or other unexpected situations, and helps to improve the safety and accuracy of the laser welding device 100.

[0063] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, in one embodiment, the laser welding device 100 also includes a workbench 50, and the multi-axis moving assembly 10 is arranged on the workbench 50. The bottom of the workbench 50 is provided with a plurality of retractable legs 53 and a plurality of rollers 52. The maximum height of the legs 53 is greater than the height of the rollers 52, and the minimum height of the legs 53 is less than the height of the rollers 52. Therefore, when the legs 53 are extended, the legs 53 are used to support the workbench 50, and the workbench 50 is more stable and convenient for construction. When the legs 53 are shortened to less than the height of the rollers 52, the rollers 52 are used to support the workbench 50, so that the workbench 50 can be easily moved.

[0064] Further, if Figure 1 、 Figure 5 and Figure 7 As shown, in one embodiment, a workpiece support 51 is further provided on the workbench 50 for placing a metal plate 60. A limiting plate 54 is provided on the edge of the working surface of the workpiece support 51. The limiting plate 54 abuts against the metal plate 60 to prevent the metal plate 60 from moving on the workpiece support 51, which is beneficial to improving welding accuracy.

[0065] Specifically, in one embodiment, a searchlight is provided on the laser welding head 20 , and the searchlight is located on the side of the distance detector 30 .

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 to the present invention.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0068] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0069] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0070] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0071] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A laser welding device for edging curved metal plates, characterized in that: The invention comprises a multi-axis moving assembly (10), a laser welding head (20) and a distance detector (30), wherein the multi-axis moving assembly (10) is connected to the laser welding head (20) and is used to drive the laser welding head (20) to move along the curved weld between the metal plate (60) and the edge plate (70), and the distance detector (30) is connected to the laser welding head (20) via an adjustable bracket module, and the distance detector (30) is located on a side of the edge plate (70) away from the metal plate (60); The multi-axis moving assembly (10) drives the laser welding head (20) and the distance detector (30) to move synchronously, so that the relative distance between the distance detector (30) and the edge plate (70) always remains unchanged. At this time, the welding laser of the laser welding head (20) always points to the curved weld between the metal plate (60) and the edge plate (70).

2. The laser welding device for edge wrapping of curved metal plates according to claim 1, characterized in that: The adjustable bracket module includes a first connecting unit and a second connecting unit connected to each other, the first connecting unit includes a rotational degree of freedom, the second connecting unit includes a movement degree of freedom, the first connecting unit is connected to a distance detector (30) or a laser welding head (20), and the second connecting unit is correspondingly connected to the laser welding head (20) or the distance detector (30).

3. The laser welding device for edge wrapping of curved metal plates according to claim 2, characterized in that: The first connecting unit comprises a first connecting arm (31) and a second connecting arm (32), one end of the first connecting arm (31) is connected to the laser welding head (20), and the other end is rotatably connected to one end of the second connecting arm (32) along a horizontal axis, and the other end of the second connecting arm (32) is connected to the distance detector (30).

4. The laser welding device for edge wrapping of curved metal plates according to claim 2, characterized in that: The second connection unit comprises a telescopic rod (33), one end of the telescopic rod (33) is connected to the first connection unit, and the other end is connected to the distance detector (30).

5. The laser welding device for edge wrapping of curved metal plates according to claim 2, characterized in that: The first connection unit and the second connection unit are ball-connected.

6. The laser welding device for edge wrapping of curved metal plates according to claim 2, characterized in that: The adjustable bracket module also includes a third connecting unit, which includes a clamping head (35), a connecting shaft (37) and an adjusting member (38). The clamping head (35) is connected to the first connecting unit or the second connecting unit. The connecting shaft passes through the clamping head (35) to connect to the distance detector. The adjusting member (38) is used to adjust the opening of the clamping head (35).

7. The laser welding device for edge wrapping of curved metal plates according to claim 6, characterized in that: The clamping head (35) comprises two clamping parts, a clamping hole (36) is provided between the two clamping parts, and the connecting shaft (37) is passed through the clamping hole (36).

8. The laser welding device for edge wrapping of curved metal plates according to claim 1, characterized in that: The multi-axis moving assembly (10) includes an x-axis moving mechanism (11), a y-axis moving mechanism (12), and a z-axis moving mechanism (13) that are interconnected and are used to drive the laser welding head (20) to move along the x-axis, y-axis, and z-axis, respectively, wherein the x-axis direction is parallel to the welding direction of the metal plate (60).

9. The laser welding device for edge wrapping of curved metal plates according to claim 8, characterized in that: The y-axis moving mechanism (12) includes a fast moving mechanism (121) and a precise moving mechanism (122); the fast moving mechanism (121) is connected to the x-axis moving mechanism (11) and the z-axis moving mechanism (13) respectively; and the z-axis moving mechanism (13) is connected to the laser welding head (20) via the precise moving mechanism (122).

10. The laser welding device for edge wrapping of curved metal plates according to claim 8, characterized in that: The x-axis moving mechanism (11) comprises an x-axis moving track (111) and an x-axis slider (112), wherein the x-axis slider (112) is in sliding engagement with the x-axis moving track (111); the y-axis moving mechanism (12) comprises a y-axis moving track (123) and a y-axis slider (124), wherein the y-axis slider (124) is in sliding engagement with the y-axis moving track (123); and the z-axis moving mechanism (13) comprises a z-axis moving track (131) and a z-axis slider (132), wherein the z-axis slider (132) is in sliding engagement with the z-axis moving track (131); The x-axis slider (112) is connected to the y-axis movable track (123), the y-axis slider (124) is connected to the z-axis movable track (131), and the z-axis slider (132) is connected to the laser welding head (20).

11. The laser welding device for edge wrapping of curved metal plates according to claim 1, characterized in that: The multi-axis moving component (10) is a six-axis robotic arm.

12. The laser welding device for edge wrapping of curved metal plates according to claim 1, characterized in that: The laser welding head (20) is provided with a visual sensor (40), which is located on the side of the distance detector (30) and is used to photograph the laser welding head (20), the distance sensor and the metal plate (60).

13. The laser welding device for edge wrapping of curved metal plates according to claim 1, characterized in that: The laser welding head (20) is provided with a searchlight, which is located on the side of the distance detector (30).

Images