A laser welding fixing device and a shielding layer automatic welding system

Abstract

The application provides a laser welding fixing device and an automatic shielding layer welding system, wherein the laser welding fixing device comprises a fastening mechanism, a sliding rail and a mounting seat, the fastening mechanism is used for fixing a concave knot, the sliding rail is mounted on the fastening mechanism, and the mounting seat is slidably connected to the sliding rail and used for mounting a welding manipulator. The fastening mechanism comprises a supporting seat, a first fastening clamp, a driving assembly and a second fastening clamp. The first fastening clamp is arranged on the supporting seat, and a plurality of first fastening clamps are arranged. The driving assembly is used for driving the plurality of first fastening clamps to move away from each other to abut against the narrow side of the concave of the concave knot. The second fastening clamp is arranged on the supporting seat, and a plurality of second fastening clamps are arranged. The driving assembly is used for driving the plurality of second fastening clamps to move close to each other to clamp the edge side of the concave of the concave knot. The laser welding fixing device can be fixed with the concave knot of the shielding layer, so that the welding manipulator can be conveniently mounted.

Description

Technical Field

[0001] This application relates to the technical field of welding equipment, and in particular to a laser welding fixing device and an automated welding system for shielding layers. Background Technology

[0002] LNG (liquefied natural gas) carrier storage tanks require excellent thermal insulation and pressure resistance. Typically, a shielding layer is laid on the inner wall of the tank to improve the safety of the LNG stored inside. The surface of the shielding layer has crisscrossing protrusions, which form raised knots at the intersections. The shielding layer is composed of multiple corrugated plates spliced ​​together, and adjacent corrugated plates need to be sealed together by welding.

[0003] To improve welding efficiency, an automated shielding layer welding system has emerged in related technologies. This system includes a mounting base, a robotic arm, and a welding torch. The robotic arm is mounted on the mounting base, and the welding torch is mounted on the robotic arm's swing arm. A slide rail is provided at the bottom of the mounting base, and a docking assembly is provided at the bottom of the slide rail. The slide rail can be detachably mounted to the knot on the surface of the shielding layer via the docking assembly, thereby providing a sliding platform for the robotic arm to facilitate automated welding of the shielding layer by the welding torch.

[0004] However, to reduce gas circulation channels within the shielding layer and lower the LNG evaporation rate, another shielding layer structure exists. This structure features intersecting recesses on its surface, forming concave knots at their intersections. These knots have a narrowing side and an edge side in two mutually perpendicular directions on the plane, differing in structure from convex knots. In related technologies, the docking components struggle to achieve effective clamping with these concave knots, resulting in unstable fixation. This makes it difficult to install slide rails, mounting bases, and robotic arms onto the shielding layer, hindering automated welding operations. Summary of the Invention

[0005] In order to fix the laser welding fixing device and the shielding layer with the concave knot so as to facilitate the installation of the welding robot, this application provides a laser welding fixing device and an automated welding system for the shielding layer.

[0006] In a first aspect, this application provides a laser welding fixing device, which adopts the following technical solution: A laser welding fixing device, comprising: Fastening mechanism for securing to the recessed knot; A sliding rail is mounted on the fastening mechanism; The mounting base is slidably connected to the sliding rail, and the mounting base is used to mount the welding robot. The fastening mechanism includes a support base, a first fastening clamp, and a drive assembly. The first fastening clamp is disposed on the support base, and multiple first fastening clamps are provided. The drive assembly is used to drive multiple first fastening clamps to move away from each other to abut against the concave narrowing side of the concave knot.

[0007] By adopting the above technical solution, after the corrugated plate is laid on the inner bottom wall of the storage tank, multiple first fastening clamps open outward under the action of the drive component and press against the concave narrowing side of the concave knot, so that the fastening mechanism can form an effective fixation with the concave knot, thereby providing a stable installation foundation for the sliding track, mounting base and welding robot, and enabling the fastening mechanism to adapt to the concave knot.

[0008] Optionally, the fastening mechanism further includes a second fastening clamp, which is disposed on the support base. Multiple second fastening clamps are provided, and the driving component is used to drive the multiple second fastening clamps to move closer to each other to clamp the recessed edge side of the recessed knot.

[0009] By adopting the above technical solution, the second fastening clamp cooperates with the first fastening clamp to clamp the concave knot from two mutually perpendicular directions, the narrowing side of the concave knot and the edge side of the concave knot, thereby reducing the risk of loosening of the device during welding operations or robot movement, and improving clamping stability and positioning reliability during welding.

[0010] Optionally, the driving component includes a pushing block and a pushing locking member. The pushing block is slidably connected to the support base, and the pushing locking member is threadedly connected to the support base. The pushing locking member is used to push the pushing block to move and lock its position. The pushing block drives the first fastening clamp and the second fastening clamp to clamp the concave knot together.

[0011] By adopting the above technical solution, the locking component can both move the pushing block and lock its position, so that the first and second clamping clamps can be clamped and maintained under unified drive, simplifying the drive structure, reducing the number of parts, and facilitating quick assembly and disassembly by operators.

[0012] Optionally, the first fastening clamp is provided with a first sliding inclined surface, and the first fastening clamp is slidably connected to the support base; the second fastening clamp is provided with a second sliding inclined surface, and the second fastening clamp is slidably connected to the support base. The push block is provided with a first push inclined surface and a second push inclined surface, the first push inclined surface cooperates with the first sliding inclined surface, and the second push inclined surface cooperates with the second sliding inclined surface.

[0013] By adopting the above technical solution, when the push block moves, the inclined surfaces of the first pushing inclined surface and the first sliding inclined surface, and the second pushing inclined surface and the second sliding inclined surface cooperate to convert the linear advancement of the push block into the synchronous sliding of the first fastening clamp and the second fastening clamp in different directions. This achieves a set of driving actions to drive the first fastening clamp and the second fastening clamp to clamp together, thereby improving clamping efficiency and action synchronization.

[0014] Optionally, the fastening mechanism further includes a first elastic element and a second elastic element, wherein the first elastic element is connected to the support base and the first fastening clamp respectively, and the second elastic element is connected to the support base and the second fastening clamp respectively.

[0015] By adopting the above technical solution, after the locking of the push locking member is released, the first elastic member drives the first fastening clamp to reset, and the second elastic member drives the second fastening clamp to reset, which facilitates the fastening mechanism to quickly loosen and transfer to the position of the next concave knot, thereby improving the efficiency of repeated disassembly and assembly.

[0016] Optionally, a corner mechanism is also included, which includes a support base, a rotating disk, and a docking track; the support base is fixed to the corrugated plate, the rotating disk is rotatably connected to the support base, and the mounting base is slidably connected to the docking track; the rotating disk drives the docking track to rotate, so that the docking track docks with the transverse and longitudinal sliding tracks respectively.

[0017] By adopting the above technical solution, the corner mechanism can realize the turning connection between the transverse sliding track and the longitudinal sliding track, so that the mounting base and welding robot can move between mutually perpendicular sliding tracks, which is conducive to the automated welding of corrugated plate edges, corners and cross-area welds.

[0018] Optionally, a sliding component is provided between the rotating disk and the docking track, and the docking track slides relative to the rotating disk through the sliding component, so that the docking track abuts against the sliding track.

[0019] By adopting the above technical solution, the docking track can be slidably adjusted relative to the rotating disk to compensate for the positional error after rotation and alignment, so that the docking track and the target sliding track can reliably abut against each other, reducing the risk of the mounting seat getting stuck due to gaps between the docking track and the sliding track, and improving docking accuracy and smoothness.

[0020] Optionally, a clamping member is installed on the rotating disk, which is used to lock the docking track in the position after docking, so that the docking track abuts against the sliding track.

[0021] By adopting the above technical solution, after the docking track and the sliding track are docked, the clamping part locks the position of the docking track to prevent the docking track from shifting when the robot arm passes by, and keeps the docking track and the sliding track tightly abutting, thereby improving the track crossing stability of the mounting base.

[0022] Optionally, the corner mechanism further includes a pin, which passes through the support and the rotating disk, and is used to lock the position of the rotating disk.

[0023] By adopting the above technical solution, the pin can restrict the rotation of the rotating disk after it has rotated to the correct position, so that the docking track is kept at a certain angle corresponding to the horizontal or vertical sliding track, thereby enhancing the repeatability of the corner docking and preventing the rotating disk from rotating unexpectedly during the transfer process.

[0024] Secondly, this application also provides an automated welding system for a shielding layer, using the aforementioned laser welding fixing device, and further including a welding robot, which is mounted on the mounting base and is used to weld the joints of adjacent corrugated plates.

[0025] By adopting the above technical solution, the welding robot, with the help of a laser welding fixing device that can be stably fixed to the concave knot, can fully weld the joint of adjacent corrugated plates, so that the shielding layer with the concave knot can also obtain a stable sliding platform, thereby improving the automation level, welding efficiency and weld quality of the shielding layer splicing welding.

[0026] In summary, this application includes at least one of the following beneficial effects: 1. The drive assembly moves multiple first fastening clamps apart to abut against the concave narrowing side of the concave knot, and the drive assembly moves multiple second fastening clamps closer together to clamp the concave edge side of the concave knot, so that the fastening mechanism can be stably fixed on the concave knot, providing a reliable mounting platform for sliding rails, mounting bases and welding robots, and adapting to the automated welding needs of shielding layers with concave knots; 2. By having the first and second clamping clamps work together in two vertical directions, and by coordinating the inclined plane transmission of the push block, the locking of the push locking element, and the elastic reset of the first and second elastic elements, the clamping stability, action synchronization, ease of assembly and disassembly, and reliability of repeated use are improved. 3. Rotating the turntable allows the docking rail to connect with the horizontal or vertical sliding rails respectively. The position of the docking rail can be finely adjusted through the sliding component, and the clamping component then clamps and locks the docking rail to the sliding rail, improving the smoothness of the mounting base's rail passage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the corrugated plate according to an embodiment of this application; Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle; Figure 3 This is a schematic diagram of the structure of the laser welding fixing device, welding robot, corner mechanism and corrugated plate in the embodiments of this application; Figure 4 This is a partial structural schematic diagram of the corrugated plate, laser welding fixing device, and welding robot according to an embodiment of this application; Figure 5 This is a bottom view schematic diagram of the fastening mechanism according to an embodiment of this application; Figure 6 This is a schematic diagram of the fastening mechanism of this application after the support seat is removed; Figure 7 This is a schematic diagram of the corner mechanism and fastening mechanism in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Fastening mechanism; 11. Support base; 12. First fastening clamp; 121. First sliding ramp; 13. First elastic element; 14. Second fastening clamp; 141. Second sliding ramp; 15. Second elastic element; 16. Drive assembly; 161. Push block; 1611. First push ramp; 1612. Second push ramp; 162. Push locking element; 2. Sliding rail; 3. Mounting base; 4. Welding robot; 5. Corner mechanism; 51. Bearing base; 52. Rotating disk; 53. Pin; 54. Sliding assembly; 541. Guide rail; 542. Sliding plate; 55. Docking rail; 56. Abutting element; 100. Recessed knot; 1001. Recessed narrowing side; 1002. Recessed edge side. Detailed Implementation

[0029] The following combination Figures 1 to 7 This application will be described in further detail.

[0030] This application provides a laser welding fixing device.

[0031] refer to Figure 1 and Figure 2 The laser welding fixing device in this embodiment is applied to the automated welding operation of the inner wall shielding layer of an LNG ship storage tank. The shielding layer is composed of multiple corrugated plates horizontally spliced ​​together. The surface of the corrugated plates is provided with intersecting recesses. The intersecting recesses form a recessed knot 100 at the intersection. The recessed knot 100 has two narrowing recessed sides 1001 that are oppositely arranged and narrower in width in the transverse direction, and two recessed edge sides 1002 that are oppositely arranged in the longitudinal direction. The transverse and longitudinal directions are perpendicular to each other in the plane.

[0032] refer to Figure 3 and Figure 4The laser welding fixing device includes a fastening mechanism 1, a sliding rail 2, and a mounting base 3. The fastening mechanism 1 secures the device to the recessed knot 100. The sliding rail 2 is mounted on the fastening mechanism 1, and the mounting base 3 is slidably connected to the sliding rail 2. A welding robot 4 is mounted on the mounting base 3, allowing the welding robot 4 to slide along the sliding rail 2 with the recessed knot 100 as its support base, performing automated welding at the joints of adjacent corrugated plates. One sliding rail 2 corresponds to multiple fastening mechanisms 1. These multiple fastening mechanisms 1 are arranged at intervals along the extension direction of the sliding rail 2 and are respectively fixed to their corresponding recessed knots 100. Two sliding rails 2 form a group and are arranged in parallel at intervals. The mounting base 3 is simultaneously slidably mounted on two sliding rails 2 within the same group to ensure the stability of the mounting base 3 during sliding.

[0033] refer to Figure 4 and Figure 5 The fastening mechanism 1 includes a support base 11, a first fastening clamp 12, a second fastening clamp 14, a drive assembly 16, a first elastic element 13, and a second elastic element 15. For a single fastening mechanism 1, there are two of each of the first fastening clamps 12 and the second fastening clamp 14. The top side of the support base 11 is fixedly connected to the sliding rail 2. Both first fastening clamps 12 are slidably connected to the support base 11, and both second fastening clamps 14 are slidably connected to the support base 11. The two first fastening clamps 12 are arranged opposite each other along a first direction, and the two second fastening clamps 14 are arranged opposite each other along a second direction. The first direction and the second direction are perpendicular to each other in the plane and correspond to the concave narrowing side 1001 and the concave edge side 1002 of the concave knot 100, respectively.

[0034] refer to Figure 5 and Figure 6The first fastening clamp 12 is provided with a first sliding inclined surface 121, and the second fastening clamp 14 is provided with a second sliding inclined surface 141. The drive assembly 16 includes a push block 161 and a push locking member 162. The push block 161 is slidably connected to the support base 11. The push block 161 is provided with a first push inclined surface 1611 and a second push inclined surface 1612. The first push inclined surface 1611 cooperates with the first sliding inclined surface 121 of the first fastening clamp 12, and the second push inclined surface 1612 cooperates with the second sliding inclined surface 141 of the second fastening clamp 14. The push locking member 162 is specifically a bolt. The push locking member 162 passes through the support base 11 and is threadedly connected to the support base 11. The end of the push locking member 162 abuts against the push block 161. When the operator turns the push locking member 162, the push locking member 162 causes the push block 161 to move. During the movement of the push block 161, the linear advance of the push block 161 is converted into the synchronous sliding of the first fastening clamp 12 and the second fastening clamp 14 in different directions through the cooperation of the first push inclined surface 1611 and the first sliding inclined surface 121, and the second push inclined surface 1612 and the second sliding inclined surface 141: the first push inclined surface 1611 pushes against the first sliding inclined surface 121, causing the two first fastening clamps 12 to move away from each other, thereby pressing against the concave narrowing side 1001 of the concave knot 100; the second push inclined surface 1612 pushes against the second sliding inclined surface 141, causing the two second fastening clamps 14 to move closer to each other, thereby clamping the concave edge side 1002 of the concave knot 100. Thus, a single twisting action can drive the first fastening clamp 12 and the second fastening clamp 14 to clamp the concave knot 100 from two mutually perpendicular directions on the plane, so that the fastening mechanism 1 and the concave knot 100 form an effective and stable fixation, thereby providing a stable installation foundation for the sliding track 2, the mounting base 3 and the welding robot 4; at the same time, after the push locking member 162 pushes the push block 161 into place, it retains the position of the push block 161 by means of thread self-locking, so that the clamping state is maintained, simplifying the drive structure, reducing the number of parts, and facilitating quick assembly and disassembly by operators.

[0035] refer to Figure 5 and Figure 6Both the first elastic element 13 and the second elastic element 15 are springs. The first elastic element 13 is fixedly connected to the support base 11 and the first fastening clamp 12, respectively, and the second elastic element 15 is fixedly connected to the support base 11 and the second fastening clamp 14, respectively. When the push locking element 162 is turned to move the push block 161, the first elastic element 13 and the second elastic element 15 accumulate elastic force. When the push locking element 162 is turned in the opposite direction to release the lock on the push block 161, the first elastic element 13 drives the first fastening clamp 12 to slide back to its original position, and the second elastic element 15 drives the second fastening clamp 14 to slide back to its original position. The first fastening clamp 12 and the second fastening clamp 14 are released from the concave knot 100, and the fastening mechanism 1 can be removed from the current concave knot 100, thereby improving the efficiency of repeated disassembly and assembly of the fastening mechanism 1.

[0036] refer to Figure 3 and Figure 7 The laser welding fixing device also includes a corner mechanism 5, which is used to move the mounting base 3 between the transverse sliding rail 2 and the longitudinal sliding rail 2. The corner mechanism 5 includes a bearing base 51, a rotating disk 52, a docking rail 55, a sliding assembly 54, a clamping member 56, and a pin 53. Multiple fastening mechanisms 1 are installed on the bottom side of the bearing base 51, and the multiple fastening mechanisms 1 are respectively fixed to multiple recessed knots 100 at the corner of the corrugated plate, thereby fixing the bearing base 51 at the corner of the corrugated plate.

[0037] refer to Figure 3 and Figure 7 The rotating disk 52 is rotatably connected to the support base 51, and the rotating disk 52 can rotate about a vertical axis relative to the support base 51. A sliding assembly 54 is disposed between the rotating disk 52 and the docking track 55, and the docking track 55 slides relative to the rotating disk 52 via the sliding assembly 54. Specifically, the sliding assembly 54 includes a guide rail 541 and a sliding plate 542. The guide rail 541 is fixedly connected to the rotating disk 52, the sliding plate 542 is slidably connected to the guide rail 541, and the docking track 55 is fixedly connected to the top side of the sliding plate 542, and the docking track 55 can be slidably connected to the mounting base 3. When the operator rotates the rotating disk 52, the rotating disk 52 drives the docking track 55 to rotate, causing the docking track 55 to dock with the transverse and longitudinal sliding tracks 2 respectively. After the rotating disk 52 is rotated into position, the operator can push the sliding plate 542 to slide along the guide rail 541, so that the docking track 55 can slide and finely adjust relative to the rotating disk 52 to compensate for the position error after rotation and alignment, so that the docking track 55 abuts against the target sliding track 2, thereby reducing the risk of the mounting seat 3 getting stuck due to the gap between the docking track 55 and the sliding track 2, and improving the docking accuracy and the smoothness of the sliding process of the mounting seat 3.

[0038] refer to Figure 3 and Figure 7A clamping element 56 is installed on the rotating disk 52. The clamping element 56 is used to lock the docking track 55 in the position after docking. In one embodiment, the clamping element 56 is specifically a bolt. The clamping element 56 is threadedly connected to the rotating disk 52. After the docking track 55 docks with the sliding track 2, the clamping element 56 is tightened, and the clamping element 56 presses against the sliding plate 542, so that the docking track 55 presses against the sliding track 2. The clamping element 56 can fix the position of the sliding plate 542 and the docking track 55, prevent the docking track 55 from shifting when the mounting base 3 and the welding robot 4 pass by, and improve the track stability of the mounting base 3.

[0039] refer to Figure 3 and Figure 7 The corner mechanism 5 also includes a pin 53. The support seat 51 has a pin hole. The pin 53 passes through the support seat 51 and the rotating disk 52. That is, the pin 53 passes through the rotating disk 52 and is inserted into the pin hole of the support seat 51 to lock the position of the rotating disk 52. This keeps the docking track 55 at a certain angle corresponding to the horizontal or vertical sliding track 2, enhances the repeatability of the corner docking, and avoids the rotating disk 52 from rotating accidentally during the transfer process.

[0040] refer to Figure 3 and Figure 7 When it is necessary to transfer the mounting base 3 from the current sliding track 2 to another sliding track 2 perpendicular to it, first slide the mounting base 3 along the current sliding track 2 into the docking track 55. Then pull out the pin 53 and loosen the clamping member 56 to release the lock on the rotating disk 52 and the sliding plate 542; then rotate the rotating disk 52 90 degrees so that the docking track 55 faces the adjacent sliding track 2. Then push the sliding plate 542 to slide along the guide rail 541 so that the docking track 55 docks with the adjacent sliding track 2; then tighten the clamping member 56 to lock the position of the sliding plate 542, and pass the pin 53 through the rotating disk 52 and insert it into the pin hole to lock the rotating disk 52. Finally, slide the mounting base 3 from the docking track 55 into the adjacent sliding track 2, thus completing the switching of the mounting base 3 between the horizontal and vertical sliding tracks 2, which is beneficial for the welding robot 4 to perform automated welding on the edges and corner areas of the corrugated plate. In addition, the rotating disk 52 can be rotated 180 degrees so that the docking track 55 docks with the sliding track 2 on the corrugated plate of the next area, allowing the mounting base 3 to move onto the sliding track 2 of the adjacent corrugated plate, thus enabling the welding robot 4 to move across the corrugated plate, so that the welding robot 4 can weld the corrugated plate of the next area.

[0041] This application also provides an automated welding system for shielding layers. The automated welding system uses the aforementioned laser welding fixing device and includes a welding robot 4 mounted on a mounting base 3. The welding robot 4 is used to weld the joints of adjacent corrugated plates. Because the laser welding fixing device can be stably fixed on the recessed knot 100, the shielding layer with the recessed knot 100 can also obtain a stable sliding platform, thereby improving the automation level, welding efficiency, and weld quality of the welding after the shielding layers are spliced.

[0042] The implementation principle of the laser welding fixing device and the automated welding system for the shielding layer in this application embodiment is as follows: After corrugated plates are laid on the inner wall of the storage tank, adjacent corrugated plates are first manually spot-welded and fixed. The operator turns and pushes the locking part 162, causing the pushing block 161 to move linearly. The pushing block 161 drives the first fastening clamp 12 and the second fastening clamp 14 to slide synchronously, so that the two opposing first fastening clamps 12 move away from each other to abut against the concave narrowing side 1001 of the concave knot 100, and the two second fastening clamps 14 move closer to each other to clamp the concave edge side 1002, thereby firmly clamping the fastening mechanism 1 onto the concave knot 100 from two mutually perpendicular directions on the plane. Then, the sliding rail 2 is fixed to multiple fastening mechanisms 1, and the operator pushes the mounting base 3 to move, so that the mounting base 3 drives the welding robot 4 to slide along the sliding rail 2 to realize the automated welding of the joints of adjacent corrugated plates. After loosening the push locking member 162, the first elastic member 13 drives the first fastening clamp 12 to reset, and the second elastic member 15 drives the second fastening clamp 14 to reset, facilitating quick disassembly and transfer. A corner mechanism 5 is provided at the corner of the corrugated plate, which allows the docking track 55 to dock between the transverse and longitudinal sliding tracks 2, realizing the movement of the welding robot 4 across directions and across areas.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser welding fixing device, characterized in that, include: Fastening mechanism (1) for securing to the concave knot (100); The sliding rail (2) is installed on the fastening mechanism (1); Mounting base (3) is slidably connected to the sliding rail (2), and the mounting base (3) is used to mount the welding robot (4). The fastening mechanism (1) includes a support base (11), a first fastening clamp (12), and a drive assembly (16); the first fastening clamp (12) is disposed on the support base (11), and there are multiple first fastening clamps (12); the drive assembly (16) is used to drive the multiple first fastening clamps (12) to move away from each other to abut against the concave narrowing side (1001) of the concave knot (100).

2. The laser welding fixing device according to claim 1, characterized in that: The fastening mechanism (1) further includes a second fastening clip (14), which is disposed on the support base (11). Multiple second fastening clips (14) are provided. The drive assembly (16) is used to drive multiple second fastening clips (14) to move closer to each other to clamp the recessed edge side (1002) of the recessed flower knot (100).

3. The laser welding fixing device according to claim 2, characterized in that: The drive assembly (16) includes a push block (161) and a push locking member (162). The push block (161) is slidably connected to the support base (11), and the push locking member (162) is threadedly connected to the support base (11). The push locking member (162) is used to push the push block (161) to move and lock the position. The push block (161) drives the first fastening clamp (12) and the second fastening clamp (14) to clamp the concave flower knot (100) together.

4. The laser welding fixing device according to claim 3, characterized in that: The first fastening clamp (12) is provided with a first sliding inclined surface (121), and the first fastening clamp (12) is slidably connected to the support base (11); the second fastening clamp (14) is provided with a second sliding inclined surface (141), and the second fastening clamp (14) is slidably connected to the support base (11); The push block (161) is provided with a first push inclined surface (1611) and a second push inclined surface (1612). The first push inclined surface (1611) cooperates with the first sliding inclined surface (121), and the second push inclined surface (1612) cooperates with the second sliding inclined surface (141).

5. The laser welding fixing device according to claim 3, characterized in that: The fastening mechanism (1) further includes a first elastic element (13) and a second elastic element (15). The first elastic element (13) is connected to the support base (11) and the first fastening clamp (12) respectively, and the second elastic element (15) is connected to the support base (11) and the second fastening clamp (14) respectively.

6. The laser welding fixing device according to claim 1, characterized in that: It also includes a corner mechanism (5), which includes a support seat (51), a rotating disk (52) and a docking track (55); the support seat (51) is used to fix it on the corrugated plate, the rotating disk (52) is rotatably connected to the support seat (51), and the mounting seat (3) is slidably connected to the docking track (55); the rotating disk (52) drives the docking track (55) to rotate, so that the docking track (55) docks with the horizontal and vertical sliding tracks (2) respectively.

7. A laser welding fixing device according to claim 6, characterized in that: A sliding component (54) is provided between the rotating disk (52) and the docking track (55). The docking track (55) slides relative to the rotating disk (52) through the sliding component (54), so that the docking track (55) abuts against the sliding track (2).

8. A laser welding fixing device according to claim 7, characterized in that: A clamping member (56) is installed on the rotating disk (52). The clamping member (56) is used to lock the docking track (55) in the position after docking, so that the docking track (55) abuts against the sliding track (2).

9. A laser welding fixing device according to claim 6, characterized in that: The corner mechanism (5) also includes a pin (53), which is inserted through the bearing seat (51) and the rotating disk (52) and is used to lock the position of the rotating disk (52).

10. An automated welding system for a shielding layer, characterized in that: The device includes a laser welding fixing device as described in any one of claims 1-9, and further includes a welding robot (4) mounted on the mounting base (3), the welding robot (4) being used to weld the joints of adjacent corrugated plates.

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