Laser hybrid welding apparatus and apparatus adjustment method

Abstract

A laser hybrid welding apparatus. The apparatus comprises: a laser welding head, a welding head assembly, and a weld tracking assembly; the middle of the lower end of the laser welding head directly faces a workpiece, and a laser beam is emitted to perform a laser autogenous welding operation; the welding head assembly comprises an adjustment mechanism and an arc welding head, and the adjustment mechanism comprises a first adjustment platform, a long-distance adjustment plate, a second adjustment platform, a first rotating adjustment plate, a second rotating adjustment plate and a third adjustment platform; by adjusting the linear displacement and rotation of the adjustment mechanism in three directions of X, Y and Z, the position and angle of the arc welding head are adjusted; and the weld tracking assembly is provided with a sensor and a control system to monitor the path and position of a weld in real time. Further provided is an adjustment method for a hybrid welding apparatus, which has a wide range of application scenarios.

Description

A laser composite welding device and a device adjustment method Technical Field

[0001] This invention belongs to the technical field of welding equipment, and relates to a laser composite welding device and a device adjustment method. Background Technology

[0002] Among existing welding processes, laser welding is widely used in industrial manufacturing due to its high efficiency and high precision, especially suitable for precision machining and welding of high-strength materials. However, current laser welding equipment on the market typically relies on a fixed welding head structure when dealing with different types of welds (such as flat welds and fillet welds), resulting in insufficient flexibility in the welding process. This is particularly true when welding welds of different shapes, leading to complex operation and low efficiency.

[0003] Existing laser welding equipment typically has the following characteristics:

[0004] Fixed-angle welding heads: Traditional laser welding equipment is often equipped with fixed-angle welding heads. This design can meet certain specific welding tasks, such as welding straight seams. However, when facing fillet welds, the fixed angle of the welding head cannot adapt to the tortuous or inclined characteristics of the weld, resulting in poor weld quality. It often requires manual adjustment of the welding head angle, or even replacement of the welding head to adapt to different welding needs.

[0005] Single adjustment mechanism: Existing laser welding equipment generally only has a simple single-axis adjustment mechanism, which only allows the welding head to move up and down in the vertical direction (Z-axis). This adjustment method cannot meet the needs of welding tasks for multi-dimensional position adjustment, especially when welding complex workpieces, as it cannot perform precise adjustments in the horizontal (X-axis) or vertical (Y-axis) directions, thus limiting the applicability of the equipment.

[0006] Manual welding head replacement: Because existing equipment cannot simultaneously handle welding of different angles, operators typically need to manually change different welding heads according to the welding task to adapt to the different welding requirements of flat welds and fillet welds. This manual welding head replacement process is cumbersome and time-consuming, increasing operational difficulty and production costs. Even slight deviations during the replacement process can lead to a decrease in welding quality, resulting in uneven welds, cracks, and other problems.

[0007] Lack of automated weld seam tracking systems: While some existing equipment integrates weld seam tracking systems, these systems are often simply designed and can only roughly track straight weld seams, failing to effectively handle sudden changes in the weld seam path or complex curves. This makes it difficult for the welding head to accurately follow the weld seam trajectory during welding, thus affecting weld quality. In the absence of automated weld seam tracking, operators must manually adjust the position of the welding head, which undoubtedly increases welding difficulty and operational burden.

[0008] Therefore, a laser hybrid welding device is needed that is compatible with both flat welds and fillet welds, capable of performing different types of welding, and able to track the position of the weld in real time. Summary of the Invention

[0009] To address the shortcomings of existing technologies, the purpose of this invention is to provide a laser composite welding device and a device adjustment method.

[0010] This invention provides a laser composite welding device, the device comprising: a laser welding head, a welding head assembly, and a weld seam tracking assembly;

[0011] The laser welding head has a straight surface facing the workpiece at the lower middle, and emits a laser beam to perform laser self-fusion welding.

[0012] The welding head assembly includes one or more adjustment mechanisms and an arc welding head at the end; the position and angle of the arc welding head can be adjusted by adjusting the linear displacement and rotation of the adjustment mechanisms in the XYZ directions.

[0013] The weld seam tracking component is equipped with sensors and a control system to monitor the path and position of the weld seam in real time.

[0014] The welding head assembly includes a first adjustment platform, a long-distance adjustment plate, a second adjustment platform, a first rotary adjustment plate, an arc welding head, a second rotary adjustment plate, and a third adjustment platform.

[0015] The long-distance adjustment plate is a rectangular plate structure with one or more horizontal waist-shaped through holes. One end of the long-distance adjustment plate is fixedly connected to the first back plate of the first adjustment platform. Its rectangular plane can be tightened by one or more connecting bolts passing through one or more waist-shaped through holes, allowing the long-distance adjustment plate to slide back and forth in the horizontal direction, thereby slidably fixing the welding head assembly to the back plate of the laser welding head.

[0016] The first adjustment platform is capable of providing horizontal displacement change, including a first adjustment knob, a first coupling, a first guide rail, and a first slider; the rotation of the first adjustment knob is connected to the shaft end of the lead screw through the first coupling; the lead screw is connected to the first slider through a thread, and when the rotation of the first adjustment knob is transmitted to the first slider through the thread, the first slider can slide back and forth bidirectionally along the first guide rail.

[0017] A first adjusting plate is fixedly mounted on the first slider, and the first adjusting plate can slide back and forth in both directions as the first slider moves; one end of the first adjusting plate is fixedly connected to the second back plate of the second adjusting platform.

[0018] The second adjustment platform can provide vertical displacement change, including a second adjustment knob, a second coupling, a second guide rail, and a second slider; the rotation of the second adjustment knob is connected to the shaft end of the lead screw through the second coupling; the lead screw is connected to the second slider through a thread, and when the rotation of the second adjustment knob is transmitted to the second slider through the thread, the second slider can slide back and forth bidirectionally along the second guide rail;

[0019] A first rotating adjustment plate is fixedly mounted on the second slider, and the first rotating adjustment plate can slide back and forth in both directions as the second slider moves.

[0020] The first rotary adjustment plate has two mirror-symmetrical arc-shaped guide grooves at its end, forming an incomplete circle with two symmetrical cut-off points; the third back plate of the third adjustment platform has at least two bolts at one end, and the distance between the corresponding two bolts is equal to the diameter of the circle; the third adjustment platform can slide circumferentially within the guide grooves via the bolts, thereby performing rotational adjustment.

[0021] The third adjustment platform includes a third adjustment knob, a third coupling, a third guide rail, and a third slider; the rotation of the third adjustment knob is connected to the shaft end of the lead screw through the third coupling; the lead screw is connected to the third slider through a thread, and when the rotation of the third adjustment knob is transmitted to the third slider through the thread, the third slider can slide back and forth bidirectionally along the third guide rail;

[0022] A mounting plate is fixedly installed on the third slider, and the mounting plate is rotatably fixed to the second rotary adjustment plate by bolts; the second rotary adjustment plate is provided with two mirror-symmetrical arc-shaped rotary adjustment grooves, which are located on both sides of the upper end of the welding head. The rotary adjustment grooves allow the welding head to slide circumferentially along the rotary adjustment grooves by bolts, thereby performing rotational adjustment.

[0023] This invention also discloses a method for adjusting a composite welding device, the method comprising:

[0024] Rotate the bolt that passes through the waist-shaped slot through hole on the long-distance adjustment plate to allow the long-distance adjustment plate to slide horizontally. When it slides to the preset position, tighten the bolt.

[0025] And / or,

[0026] A first adjustment knob is rotated on the first adjustment platform. The rotation of the first adjustment knob is connected to the shaft end of the lead screw through a first coupling. The lead screw transmits the rotation of the first adjustment knob to the first slider through a thread. The first slider slides along the first guide rail, driving the first adjustment plate fixedly mounted on the first slider, and causing the second adjustment platform fixedly connected to the first adjustment plate to move.

[0027] And / or,

[0028] The second adjustment knob on the second adjustment platform is rotated and adjusted. The rotation of the second adjustment knob is connected to the shaft end of the lead screw through the second coupling. The lead screw transmits the rotation of the second adjustment knob to the second slider through the thread. The second slider slides along the second guide rail and drives the first rotary adjustment plate fixedly installed on the second slider.

[0029] And / or,

[0030] Guided by the guide groove of the first rotating adjustment plate, the third adjustment platform is rotated, causing the third adjustment platform and the arc welding head connected thereto to rotate.

[0031] And / or,

[0032] The third adjustment knob on the third adjustment platform is rotated and adjusted. The rotation of the third adjustment knob is connected to the shaft end of the lead screw through the third coupling. The lead screw transmits the rotation of the third adjustment knob to the third slider through the thread. The third slider slides along the third guide rail and drives the mounting plate fixedly installed on the third slider.

[0033] And / or,

[0034] Guided by the rotation adjustment groove of the second rotation adjustment plate, the arc welding head is rotated so that it rotates relative to the third adjustment platform.

[0035] The adjustment steps mentioned above can be used individually or in combination according to the actual situation, so that the adjusted laser composite welding device meets the actual use requirements.

[0036] In one specific embodiment, when performing laser hybrid welding, the laser welding head and the arc welding head of the present invention are used together. The laser welding head is used for autofusion welding, and the arc welding head is used for filler wire welding, including TIG, MIG, MAG, etc. In actual use, the two welding methods are combined to increase the welding speed by 2-3 times.

[0037] In one specific embodiment, the adjustment accuracy of the first adjustment platform is 1mm, and it includes adjustment and locking functions; when the first adjustment platform needs to be adjusted, the lock must be released first, and the first adjustment knob is rotated for adjustment. The first adjustment knob is provided with a knob scale, which can accurately adjust the position.

[0038] The long-distance adjustment plate is a horizontal coarse adjustment mechanism. When adjusting, first loosen the connecting bolt that matches the through hole of the waist-shaped groove, slide it to the appropriate position using the through hole of the waist-shaped groove, and then lock it.

[0039] The second adjustment platform has an adjustment accuracy of 1mm and includes adjustment and locking functions. When the second adjustment platform needs to be adjusted, the lock must be released first, and the second adjustment knob must be rotated for adjustment. The first adjustment knob is equipped with a knob scale, which can make precise adjustments to the position.

[0040] The first rotating adjustment plate is used to adjust the angle between the laser welding head and the arc welding head. During adjustment, loosen the bolt at the guide groove, rotate the angle of the third adjustment platform and the arc welding head to the appropriate position, and then lock them.

[0041] The arc welding head is used for filler wire welding, including MIG, MAG, TIG, etc.; the arc welding head is also referred to as a filler wire welding head.

[0042] The second rotating adjustment plate is used to further adjust the angle between the laser welding head and the arc welding head. During adjustment, loosen the bolt at the rotating adjustment groove, rotate the angle of the arc welding head to the appropriate position, and then tighten it.

[0043] The adjustment accuracy of the third adjustment platform is 1mm. It includes adjustment and locking functions. When the third adjustment platform needs to be adjusted, the lock must be released first, and the third adjustment knob can be rotated for adjustment. The third adjustment knob is equipped with a knob scale, which can make precise adjustments to the position.

[0044] The beneficial effects of this invention include:

[0045] The laser composite welding device of this invention improves welding flexibility: by manually adjusting the relative position between the laser head and the welding wire, it can adapt to different welding methods and workpiece shapes, thereby improving welding flexibility and efficiency.

[0046] The laser composite welding device of this invention improves welding quality: by adjusting the position of the laser head according to different welding requirements, better weld quality and appearance can be obtained.

[0047] The laser composite welding device of this invention simplifies the operation process: the relative position between the laser head and the welding wire can be easily adjusted by the adjustment mechanism, without the need to replace the welding device or adjust complex parameter settings, thus simplifying the operation process. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 is a structural diagram of the laser composite welding device of the present invention.

[0050] Figure 2 is a schematic diagram of the welding head assembly structure of the present invention.

[0051] Figure 3 is a structural diagram of the laser composite welding device of the present invention from another angle.

[0052] Figure 4 is a schematic diagram of the adjustment platform structure of the present invention, which is adjusted by a lead screw.

[0053] Figure 5 is a partial structural schematic diagram of the first rotating adjustment plate and the arc welding head in the laser composite welding device of the present invention.

[0054] Figure 6 is a partial structural schematic diagram of the second rotating adjustment plate and the arc welding head of the present invention.

[0055] Figure 7 shows the application of the laser composite welding device of the present invention in a flat fillet welding scenario.

[0056] Figure 8 shows the application of the laser composite welding device of the present invention in a panel welding scenario.

[0057] In the diagram, 1-laser welding head, 2-welding head assembly, 201-first adjustment platform, 2011-first back plate, 2012-first adjustment knob, 2013-first coupling, 2014-first guide rail, 2015-first slider, 2016-first adjustment plate, 202-long-distance adjustment plate, 2021-waisted slot through hole, 203-second adjustment platform, 2031-second back plate, 2032-second adjustment knob, 2033-second coupling, 2034-second guide rail 2035 - Second slider, 204 - First rotary adjustment plate, 2041 - Guide groove, 205 - Arc welding head, 206 - Second rotary adjustment plate, 2061 - Rotary adjustment groove, 207 - Third adjustment platform, 2071 - Third back plate, 2072 - Third adjustment knob, 2073 - Third coupling, 2074 - Third guide rail, 2075 - Third slider, 2076 - Mounting plate, 3 - Weld seam tracking assembly, 601 - Flat fillet welding base plate, 701 - Panel welding base plate. Detailed Implementation

[0058] The invention will be further described in detail below with reference to the specific embodiments and accompanying drawings. Except for the contents specifically mentioned below, the processes, conditions, and experimental methods for implementing the invention are all common knowledge and general knowledge in the art, and the invention does not have any particular limitations.

[0059] This invention provides a laser composite welding device, as shown in Figures 1 and 3. The device includes: a laser welding head 1, a welding head assembly 2, and a weld seam tracking assembly 3.

[0060] The lower end of the laser welding head 1 faces the workpiece directly and emits a laser beam to perform laser self-fusion welding.

[0061] The welding head assembly 2 includes one or more adjustment mechanisms and an arc welding head 205 at the end; the position and angle of the arc welding head 205 can be adjusted by adjusting the linear displacement and rotation of the adjustment mechanisms in the XYZ directions.

[0062] The weld seam tracking component 3 is equipped with sensors and a control system to monitor the path and position of the weld seam in real time.

[0063] The welding head assembly 2 includes a first adjustment platform 201, a long-distance adjustment plate 202, a second adjustment platform 203, a first rotary adjustment plate 204, an arc welding head 205, a second rotary adjustment plate 206, and a third adjustment platform 207.

[0064] In one specific embodiment of the present invention, the laser welding head 1 is located at the center of the entire device and is fixed to the back plate by one or more fixed connectors (including welding head bolts, welding head slide rails, etc.); the relative position and angle of the arc laser head 205 are precisely adjusted by adjusting each adjustment platform of the welding head assembly 2 to adapt to different welding tasks.

[0065] In practice, the laser can also be focused near the welding position via an optical fiber or lens system below the laser welding head 1 to achieve high-precision welding.

[0066] Specifically, the relative positions of the laser welding head 1 and the welding head assembly 2 can be adjusted by means of devices such as an adjustment platform or a rotating adjustment plate.

[0067] The welding head assembly 2 includes a multi-layer adjustment structure, as shown in Figure 2. These adjustment mechanisms can achieve multi-angle and multi-directional welding through rotation, horizontal and / or vertical sliding. The welding head assembly 2 is fixed to the back plate of the laser welding head by one or more component bolts, component slide rails, etc., and the distance between the welding head assembly 2 and the laser welding head is adjusted by the long-distance adjustment plate 202.

[0068] The weld seam tracking component 3 is disposed on the other side relative to the welding head component 2 and is fixedly connected to the back plate of the laser welding head; the weld seam tracking component 3 can use mature optical or laser sensors to monitor the weld seam path, collect changes in the weld seam in real time, and feed them back to the welding control system.

[0069] In one specific embodiment, the sensor can monitor the weld position in real time during the welding process. The adjustment of the weld tracking component 3 can be achieved through or automatically adjusting a platform to adapt to different weld paths and welding tasks.

[0070] Specifically, the detailed structure of the welding head assembly 2 is shown in Figure 2. It mainly includes multiple precision adjustment devices for adjusting the relative positions of the arc welding head 205 and the laser welding head 1. These adjustment devices are mainly used to achieve flexible adjustment of the welding head 205 at different positions and angles, ensuring that various welding requirements can be met in complex welding scenarios.

[0071] As shown in Figure 4, the adjustment platform in the welding head assembly 2 of the present invention uses the screw principle. By rotating the screw at a certain angle, the nut on the screw is moved a certain vertical distance, thereby driving the slider and other structures installed above the nut to achieve position adjustment.

[0072] In one specific embodiment, the adjustment device of the welding head assembly 2 specifically includes the following:

[0073] First adjustment platform 201: The first adjustment platform 201 includes a first adjustment knob 2012, a first coupling 2013, a first guide rail 2014, and a first slider 2015; Utilizing the principle of a lead screw, by rotating the lead screw at a certain angle, the nut on the lead screw can be moved a certain vertical distance, thereby driving the first slider 2015 installed above the nut to achieve adjustment; In specific adjustment, the lock must be released first, and the first adjustment knob 2012 can be rotated for adjustment, and precise adjustment can be made through the scale on the first adjustment knob 2012.

[0074] Long distance adjustment plate 202: The long distance adjustment plate 202 is provided with two horizontal waist-shaped through holes 2021. The horizontal distance between the arc welding head 205 and the laser welding head 1 is adjusted through the waist-shaped through holes 2021. During adjustment, the four connecting bolts are loosened first. After the welding head assembly 2 slides horizontally along the waist-shaped through holes 2021 to a suitable position, the connecting bolts are locked.

[0075] The second adjustment platform 203 includes a second adjustment knob 2032, a second coupling 2033, a second guide rail 2034, and a second slider 2035. Utilizing the lead screw principle, by rotating the lead screw at a certain angle, the nut on the lead screw can be moved a certain vertical distance, thereby driving the second slider 2035 installed above the nut to achieve adjustment. In specific adjustments, the lock must first be released, and the second adjustment knob 2032 can be rotated for adjustment. Precise adjustment can be made through the scale on the second adjustment knob 2032.

[0076] First Rotary Adjustment Plate 204: The first rotary adjustment plate 204 adjusts the angle between the arc welding head 205 and the laser welding head 1 in the vertical direction by rotating the third adjustment platform 207 through the guide groove 2041 on it; specifically, during adjustment, first loosen 3 connecting bolts, and after the third adjustment platform 207 is rotated into place along the direction of the guide groove 2041, tighten the bolts, as shown in Figure 5.

[0077] Arc welding head 205: The arc welding head 205 is used for filler wire welding, specifically including MIG, MAG, TIG, etc. It can be used in conjunction with laser welding head 1 to improve welding efficiency.

[0078] Second Rotary Adjustment Plate 206: The second rotary adjustment plate 206 adjusts the longitudinal angle between the arc welding head 205 and the laser welding head 1 by rotating the arc welding head 205 through the rotary adjustment groove 2061 on it; specifically, during adjustment, first loosen the 3 connecting bolts, and after the arc welding head 205 rotates into place along the rotary adjustment groove 2061, tighten the bolts, as shown in Figure 6.

[0079] The third adjustment platform 207 includes a third adjustment knob 2072, a third coupling 2073, a third guide rail 2074, and a third slider 2075. Utilizing the lead screw principle, by rotating the lead screw at a certain angle, the nut on the lead screw can be moved a certain vertical distance, thereby driving the third slider 2075 installed above the nut to achieve adjustment. Specifically, the lock must first be released, and the third adjustment knob 2072 can be rotated for adjustment. Precise adjustment can also be made using the scale on the third adjustment knob 2072.

[0080] In one specific implementation, one or more adjustment platforms can be replaced with electrically operated adjustment platforms driven by servo motors to achieve automated adjustment and higher adjustment accuracy. The electrically operated platforms can be integrated into the welding control system for more efficient automated adjustment.

[0081] In one specific implementation, one or more rotary adjustment plates can be replaced with a multi-axis electric rotary platform, with the angle of the welding head controlled by a motor. This improvement can significantly increase adjustment accuracy and speed, making it particularly suitable for complex welding tasks requiring frequent angle adjustments.

[0082] In one specific implementation, the connection between the welding head and the adjustment plate can be achieved using a magnetic connection or a quick clamp connection, which makes it more convenient and faster to replace the welding head when needed, while also reducing operation time and improving production efficiency.

[0083] The entire welding head assembly used in this invention is based on an adjustment platform, a rotating adjustment plate, and other adjustment platforms, which are connected and fixed to the back plate of the laser welding device. The positional relationship between the adjustment platform and the adjustment plate ensures that the welding head can be flexibly adjusted in multiple directions, covering all adjustment needs in the horizontal (X-axis), vertical (Z-axis), and angular directions. Through precision lead screws, slide rails, and other transmissions, the welding head assembly 2 can achieve a wide range of adjustments while ensuring stability and accuracy during the adjustment process.

[0084] Example 1

[0085] By adjusting the positions of different components in the composite welding device, high-efficiency fillet welding can be achieved.

[0086] Rotate and adjust the bolt that passes through the waist-shaped slot through hole 2021 on the long distance adjustment plate 202, so that the long distance adjustment plate can slide horizontally. When it slides to the preset position, tighten the bolt.

[0087] The first adjustment knob 2012 on the first adjustment platform 201 is rotated and adjusted. The rotation of the first adjustment knob 2012 is connected to the shaft end of the lead screw through the first coupling 2013. The lead screw transmits the rotation of the first adjustment knob 2012 to the first slider 2015 through a thread. The first slider 2015 slides along the first guide rail 2014, driving the first adjustment plate 2016 fixedly installed on the first slider 2015, and driving the second adjustment platform 203 fixedly connected to the first adjustment plate 2016 to move.

[0088] The second adjustment knob 2032 on the second adjustment platform 203 is rotated and adjusted. The rotation of the second adjustment knob 2032 is connected to the shaft end of the lead screw through the second coupling 2033. The lead screw transmits the rotation of the second adjustment knob 2032 to the second slider 2035 through the thread. The second slider 2035 slides along the second guide rail 2034, driving the first rotary adjustment plate 204 fixedly installed on the second slider 2035.

[0089] Guided by the guide groove 2041 of the first rotating adjustment plate 204, the third adjustment platform 207 is rotated, causing the third adjustment platform 207 and the arc welding head 205 connected thereto to rotate.

[0090] The third adjustment knob 2072 on the third adjustment platform 207 is rotated and adjusted. The rotation of the third adjustment knob 2072 is connected to the shaft end of the lead screw through the third coupling 2073. The lead screw transmits the rotation of the third adjustment knob 2072 to the third slider 2075 through a thread. The third slider 2075 slides along the third guide rail 2074, driving the mounting plate 2076 fixedly installed on the third slider 2075.

[0091] Guided by the rotation adjustment groove 2061 of the second rotation adjustment plate 206, the arc welding head 205 is rotated so that the arc welding head 205 rotates relative to the third adjustment platform 207.

[0092] As shown in Figure 7, when performing fillet welding, the laser welding head 1 and the fillet welding base plate 601 should be as parallel as possible to penetrate the base material, and the arc welding head 205 should be at an angle of approximately 45° to the vertical plate to fill the weld. The distance between the laser beam projected by the laser welding head 1 at the weld and the arc welding head 205 should be kept within 2mm ± 1mm, at which point the welding efficiency is highest.

[0093] Example 2

[0094] By adjusting the positions of different components in the composite welding device, efficient plate welding can be achieved.

[0095] Rotate and adjust the bolt that passes through the waist-shaped slot through hole 2021 on the long distance adjustment plate 202, so that the long distance adjustment plate can slide horizontally. When it slides to the preset position, tighten the bolt.

[0096] The first adjustment knob 2012 on the first adjustment platform 201 is rotated and adjusted. The rotation of the first adjustment knob 2012 is connected to the shaft end of the lead screw through the first coupling 2013. The lead screw transmits the rotation of the first adjustment knob 2012 to the first slider 2015 through a thread. The first slider 2015 slides along the first guide rail 2014, driving the first adjustment plate 2016 fixedly installed on the first slider 2015, and driving the second adjustment platform 203 fixedly connected to the first adjustment plate 2016 to move.

[0097] The second adjustment knob 2032 on the second adjustment platform 203 is rotated and adjusted. The rotation of the second adjustment knob 2032 is connected to the shaft end of the lead screw through the second coupling 2033. The lead screw transmits the rotation of the second adjustment knob 2032 to the second slider 2035 through the thread. The second slider 2035 slides along the second guide rail 2034, driving the first rotary adjustment plate 204 fixedly installed on the second slider 2035.

[0098] Guided by the guide groove 2041 of the first rotating adjustment plate 204, the third adjustment platform 207 is rotated, causing the third adjustment platform 207 and the arc welding head 205 connected thereto to rotate.

[0099] The third adjustment knob 2072 on the third adjustment platform 207 is rotated and adjusted. The rotation of the third adjustment knob 2072 is connected to the shaft end of the lead screw through the third coupling 2073. The lead screw transmits the rotation of the third adjustment knob 2072 to the third slider 2075 through a thread. The third slider 2075 slides along the third guide rail 2074, driving the mounting plate 2076 fixedly installed on the third slider 2075.

[0100] Guided by the rotation adjustment groove 2061 of the second rotation adjustment plate 206, the arc welding head 205 is rotated so that the arc welding head 205 rotates relative to the third adjustment platform 207.

[0101] As shown in Figure 8, when performing plate welding, the laser welding head 1 and the plate welding base plate 701 should be as perpendicular as possible to penetrate the base material. The arc welding head 205 should be as perpendicular as possible to the base plate to fill the weld. The laser line of the laser welding head 1 should be projected at the weld and the distance between the laser beam and the arc welding head 205 should be within 2mm ± 1mm. At this time, the welding efficiency is the highest.

[0102] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "vertical," and "horizontal," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0103] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0104] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0105] This application discloses numerous different embodiments or examples for implementing various structures. To simplify the disclosure, specific examples of components and arrangements are described. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, this application provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0106] The scope of protection of this invention is not limited to the above embodiments. Any variations and advantages that can be conceived by those skilled in the art without departing from the spirit and scope of the inventive concept are included in this invention and are protected by the appended claims.

Claims

1. A laser composite welding apparatus, characterized by, The device includes: a laser welding head (1), a welding head assembly (2), and a weld seam tracking assembly (3); The laser welding head (1) faces the workpiece at the middle of its lower end and emits a laser beam to perform laser self-fusion welding. The welding head assembly (2) includes one or more adjustment mechanisms and an arc welding head (205) at the end; the position and angle of the arc welding head (205) can be adjusted by adjusting the linear displacement and rotation of the adjustment mechanisms in the XYZ directions. The weld seam tracking component (3) is equipped with sensors and a control system to monitor the path and position of the weld seam in real time. The welding head assembly (2) includes a first adjustment platform (201), a long-distance adjustment plate (202), a second adjustment platform (203), a first rotary adjustment plate (204), an arc welding head (205), a second rotary adjustment plate (206), and a third adjustment platform (207).

2. The welding device of claim 1, wherein The long-distance adjustment plate (202) is a rectangular plate structure with one or more horizontal waist-shaped through holes (2021) on it. One end of the long-distance adjustment plate (202) is fixedly connected to the first back plate (2011) of the first adjustment platform (201). Its rectangular plane can be passed through one or more waist-shaped through holes (2021) by one or more connecting bolts and the tightness can be adjusted so that the long-distance adjustment plate (202) can slide bidirectionally in the horizontal direction and the welding head assembly (2) can be slidably fixed on the back plate of the laser welding head (1).

3. The welding device of claim 1, wherein The first adjustment platform (201) is capable of providing horizontal displacement change and includes a first adjustment knob (2012), a first coupling (2013), a first guide rail (2014), and a first slider (2015). The rotation of the first adjustment knob (2012) is connected to the shaft end of the lead screw through the first coupling (2013). The lead screw is connected to the first slider (2015) by a thread. When the rotation of the first adjustment knob (2012) is transmitted to the first slider (2015) through the thread, the first slider (2015) can slide back and forth bidirectionally along the first guide rail (2014). A first adjusting plate (2016) is fixedly installed on the first slider (2015). The first adjusting plate (2016) can slide back and forth in both directions with the movement of the first slider (2015). One end of the first adjusting plate (2016) is fixedly connected to the second back plate (2031) of the second adjusting platform (203).

4. The welding device of claim 1, wherein The second adjustment platform (203) is capable of vertical displacement and includes a second adjustment knob (2032), a second coupling (2033), a second guide rail (2034), and a second slider (2035). The rotation of the second adjustment knob (2032) is connected to the shaft end of the lead screw through the second coupling (2033). The lead screw is connected to the second slider (2035) by a thread. When the rotation of the second adjustment knob (2022) is transmitted to the second slider (2035) through the thread, the second slider (2035) can slide back and forth bidirectionally along the second guide rail (2034). A first rotating adjustment plate (204) is fixedly provided on the second slider (2035), and the first rotating adjustment plate (204) can slide back and forth in both directions with the movement of the second slider (2035).

5. The welding device of claim 1, wherein The first rotary adjustment plate (204) has two mirror-symmetrical arc-shaped guide grooves (2041) at its end. The two guide grooves (2041) form an incomplete circle with two symmetrical cut-off points. At least two bolts are provided at one end of the third back plate (2071) of the third adjustment platform (207), and the distance between the two bolts is equal to the diameter of the circle. The third adjustment platform (207) can slide circumferentially in the guide groove (2041) through the bolts to perform rotational adjustment.

6. The welding device of claim 1, wherein The third adjustment platform (207) includes a third adjustment knob (2072), a third coupling (2073), a third guide rail (2074), and a third slider (2075). The rotation of the third adjustment knob (2072) is connected to the shaft end of the lead screw through the third coupling (2073). The lead screw is connected to the third slider (2075) by a thread. When the rotation of the third adjustment knob (2072) is transmitted to the third slider (2075) through the thread, the third slider (2075) can slide back and forth bidirectionally along the third guide rail (2074). A mounting plate (2076) is fixedly installed on the third slider (2075). The mounting plate (2076) and the second rotary adjustment plate (206) are rotatably fixedly connected by bolts. The second rotary adjustment plate (206) is provided with two mirror-symmetrical arc-shaped rotary adjustment grooves (2061). The rotary adjustment grooves (2061) are located on both sides of the upper end of the welding head (205). The rotary adjustment grooves (2061) can be used to make the welding head (205) slide circumferentially along the rotary adjustment grooves (2061) by bolts, thereby performing rotational adjustment.

7. The welding device of claim 1, wherein The adjustment accuracy of the first adjustment platform (201) is 1 mm; And / or, The adjustment accuracy of the second adjustment platform (203) is 1 mm; And / or, The adjustment accuracy of the third adjustment platform (207) is 1 mm.

8. The welding apparatus of any one of claims 3, 4, or 6, wherein, The adjustment knob has an adjustment scale for precise adjustment of position and angle.

9. A method of adjusting a composite welding device, characterized by, The adjustment method includes: Rotate the bolt through the waist-shaped slot through hole (2021) on the long distance adjustment plate (202) to allow the long distance adjustment plate to slide horizontally. When it slides to the preset position, tighten the bolt. And / or, The first adjustment knob (2012) on the first adjustment platform (201) is rotated and adjusted. The rotation of the first adjustment knob (2012) is connected to the shaft end of the lead screw through the first coupling (2013). The lead screw transmits the rotation of the first adjustment knob (2012) to the first slider (2015) through a thread. The first slider (2015) slides along the first guide rail (2014), driving the first adjustment plate (2016) fixedly installed on the first slider (2015) and driving the second adjustment platform (203) fixedly connected to the first adjustment plate (2016) to move. And / or, The second adjustment knob (2032) on the second adjustment platform (203) is rotated and adjusted. The rotation of the second adjustment knob (2032) is connected to the shaft end of the lead screw through the second coupling (2033). The lead screw transmits the rotation of the second adjustment knob (2032) to the second slider (2035) through the thread. The second slider (2035) slides along the second guide rail (2034) and drives the first rotary adjustment plate (204) fixedly installed on the second slider (2035). And / or, The third adjustment platform (207) is rotated under the guidance of the guide groove (2041) of the first rotating adjustment plate (204), so that the third adjustment platform (207) and the arc welding head (205) connected thereto are rotated. And / or, The third adjustment knob (2072) on the third adjustment platform (207) is rotated and adjusted. The rotation of the third adjustment knob (2072) is connected to the shaft end of the lead screw through the third coupling (2073). The lead screw transmits the rotation of the third adjustment knob (2072) to the third slider (2075) through the thread. The third slider (2075) slides along the third guide rail (2074) and drives the mounting plate (2076) fixedly installed on the third slider (2075). And / or, The arc welding head (205) is rotated under the guidance of the rotation adjustment groove (2061) of the second rotation adjustment plate (206) so that the arc welding head (205) rotates relative to the third adjustment platform (207).

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