Oil float laser welding system

Abstract

The present application relates to a petroleum float laser welding system, and relates to the field of pontoon welding processing technology. The petroleum float laser welding system includes a mounting portion, on which a laser welding gun is arranged, and on which a driving device and a wire feeding device are arranged. The driving device is used to drive the wire feeding device to move in a direction away from or close to the laser welding gun, and the wire feeding device is used to deliver iron wire to the gun head of the laser welding gun. With the cooperation of various components in the present application, different welding requirements in the pontoon welding operation line can be met by one welding gun. When performing different welding, there is no need to switch the welding gun, which is convenient to operate and has high efficiency in welding operation.

Description

Technical Field

[0001] The present application relates to the field of buoyancy tank welding processing technology, and in particular to a petroleum float laser welding system. Background Art

[0002] The fully liquid-contacted high-efficiency sealed floating plate is a common device in the field of petrochemical storage technology. It is usually assembled from multiple floating boxes. The floating box as a whole is composed of components such as a box body, an oil float and a structural plate. The top of the box body is open and the oil float is stored inside. The structural plate is located in the box body and covers the oil float.

[0003] The body of the pontoon is formed by a bottom plate and a plurality of side plates. The bottom plate and the side plates, and the side plates are usually connected by welding. After the bottom plate and the side plates are connected to form the body, the oil float is placed in the body, and the structural plate is then placed in the body to cover the oil float. After that, the structural plate is also welded and fixed in the body by welding. In actual operation, the bottom plate and the side plates, and the side plates are usually welded by wire, while the thinner structural plates and the body are welded by laser welding. This results in: in the welding line of the pontoon, multiple welding guns are needed to cope with different welding requirements, and the welding gun switching operation is cumbersome, which leads to low operation efficiency. Summary of the invention

[0004] In order to improve the existing buoy welding operation line, multiple welding guns are needed to cope with different welding requirements. The welding gun switching operation is cumbersome, which leads to low operation efficiency. The present application provides a petroleum float laser welding system.

[0005] The oil float laser welding system provided in this application adopts the following technical solution:

[0006] A petroleum float laser welding system comprises a mounting portion, on which a laser welding gun is arranged, and on which a driving device and a wire feeding device are arranged, wherein the driving device is used to drive the wire feeding device to move in a direction away from or close to the laser welding gun, and the wire feeding device is used to feed iron wire to the gun head of the laser welding gun.

[0007] By adopting the above technical solution, when welding between the bottom plate and the side plate, and between the side plates, the wire feeding device is located on one side of the laser welding gun and feeds the wire to the gun head of the laser welding gun, and the laser welding gun operates to perform wire welding, thereby completing the construction of the box structure; when welding the structural plate in the box, the driving device drives the wire feeding device away from the laser welding gun to avoid interfering with the operation of the laser welding gun, and the laser welding gun then operates to perform laser welding, thereby completing the connection between the structural plate and the box. With the cooperation of various components in this application, different welding requirements in the pontoon welding line can be met by one welding gun. When performing different welding, there is no need to switch the welding gun, which is convenient to operate and has a high efficiency in welding operations.

[0008] Optionally, the driving device includes a first driving member and a second driving member which are arranged on the mounting portion, the first driving member is used to drive the wire feeding device to move vertically, and the second driving member is used to drive the wire feeding device to move horizontally.

[0009] By adopting the above technical solution, the operation of the first driving member can drive the wire feeding device to move vertically, and the operation of the second driving member can drive the wire feeding device to move horizontally, thereby making the moving range of the wire feeding device wider, which is conducive to the flexible docking of the wire feeding device and the laser welding gun. The overall applicability of the welding system is higher and can cope with more welding requirements.

[0010] Optionally, the first driving member includes a first hydraulic rod arranged on the mounting portion, and a first movable seat is arranged on the movable end of the first hydraulic rod; the second driving member includes a second hydraulic rod arranged on the first movable seat, and a second movable seat is arranged on the movable end of the second hydraulic rod, and the wire feeding device is arranged on the second movable seat.

[0011] By adopting the above technical solution, the telescopic movement of the movable end of the first hydraulic rod can drive the first movable seat to move vertically, and the movement of the first movable seat drives the second hydraulic rod and the second movable seat to move. When the second movable seat moves to one side of the laser welding gun, the second hydraulic rod operates to drive the second movable seat to move horizontally, and the movement of the second movable seat drives the wire feeding device to move, so that the wire feeding device can be close to the laser welding gun, so that the iron wire on the wire feeding device can dock with the gun head of the laser welding gun.

[0012] Optionally, a left half ring and a right half ring are rotatably provided on the second movable seat, a clamping cavity for clamping the laser welding gun body is formed between the left half ring and the right half ring, a first magnetic block is provided on the left half ring, and a second magnetic block is provided on the right half ring, and the first magnetic block and the second magnetic block magnetically repel each other; a mounting block is provided on the side of the laser welding gun body away from the second movable seat, and a third magnetic block and a fourth magnetic block are respectively provided on both sides of the mounting block, the third magnetic block is magnetically attracted to the first magnetic block, and the fourth magnetic block is magnetically attracted to the second magnetic block.

[0013] By adopting the above technical solution, when wire welding is required, the second hydraulic cylinder drives the second movable seat to move in the direction close to the laser welding gun, the wire of the wire feeding device docks with the gun head of the laser welding gun, and the movement of the second movable seat drives the left half ring and the right half ring to move. Due to the repulsive effect of the first magnetic block and the second magnetic block, the left half ring and the right half ring will not close, and a space for the laser welding gun to pass through is formed between the two; when the left half ring and the right half ring follow the second movable seat to move to the other side of the laser welding gun, the third magnetic block and the first magnetic block attract each other, and the fourth magnetic block and the second magnetic block attract each other. The left half ring and the right half ring are rotated to clamp the gun body of the laser welding gun. At this time, the second movable seat establishes a connection with the laser welding gun through the left half ring and the right half ring, thereby improving the stability of the wire feeding device in the process of conveying the iron wire to the laser welding gun and avoiding interference to the wire feeding device caused by failure or damage of the second hydraulic rod and other collisions; in addition, after the left half ring and the right half ring are rotated to clamp the laser welding gun, the continued movement of the second movable seat in the same direction will be restricted, which can avoid excessive movement of the second movable seat, causing the iron wire of the wire feeding device to be affected in the connection with the gun head of the laser welding gun.

[0014] Optionally, a first torsion spring is sleeved on the rotating shaft of the left half ring, one end of the first torsion spring is connected to the second movable seat, and the other end is connected to the left half ring; a second torsion spring is sleeved on the rotating shaft of the right half ring, one end of the second torsion spring is connected to the second movable seat, and the other end is connected to the right half ring.

[0015] By adopting the above technical solution, the existence of the first torsion spring and the second torsion spring limits the rotation range of the left half ring and the right half ring. When the left half ring and the right half ring have not moved to clamp the laser welding gun, the left half ring and the right half ring rotate in the direction away from each other under the influence of the repulsive magnetism of the first magnetic block and the second magnetic block. The first torsion spring and the second torsion spring are in a twisted deformation state at this time. Under the elastic force of the first torsion spring and the second torsion spring, the rotation range of the left half ring and the right half ring is limited, and the left half ring and the right half ring will not rotate excessively to affect the subsequent docking with the mounting block.

[0016] Optionally, a guide block is provided on one side of the laser welding gun body close to the second movable seat, and a cross section of the guide block gradually decreases in a direction away from the laser welding gun.

[0017] By adopting the above technical solution, when the left half ring and the right half ring follow the second movable seat to move in the direction close to the laser welding gun, the guide block can play a guiding role so that the left half ring and the right half ring can move more smoothly to dock with the laser welding gun.

[0018] Optionally, the first magnetic block, the second magnetic block, the third magnetic block, the fourth magnetic block and the mounting block are all provided with through holes that can be interconnected, the mounting portion is provided with a telescopic portion, the telescopic portion is provided with an insertion rod, and the telescopic portion is used to drive the insertion rod to be inserted into the through hole.

[0019] By adopting the above technical solution, when the left half ring and the right half ring are rotated to clamp the gun body of the laser welding gun, the first magnetic block, the second magnetic block, the third magnetic block, the fourth magnetic block and the through holes on the mounting block are interconnected, and the telescopic part is operated at this time, and the telescopic part drives the insertion rod to move to insert into the through hole, thereby further fixing the positions of the left half ring and the right half ring, and the stability of the wire feeding device in the process of conveying iron wire to the laser welding gun is further improved.

[0020] Optionally, the insertion rod includes a fixed sleeve arranged on the telescopic part, a movable rod is coaxially slidably connected to the fixed sleeve, and a push spring connected to the movable rod is arranged in the fixed sleeve.

[0021] By adopting the above technical solution, when the left half ring and the right half ring follow the movement of the second movable seat, the telescopic part can operate, and the telescopic part drives the fixed sleeve and the movable rod to move. The movable rod will abut against the adjacent half ring, and the pushing spring is in a compressed and deformed state at this time. When the corresponding half ring rotates until the movable rod is docked with the through hole, the rebound of the pushing spring drives the movable rod to bounce into the through hole, and the docking process of the movable rod and the through hole is smoother.

[0022] Optionally, a side of the through hole close to the insertion rod is connected to a guide hole that expands outward in a trumpet shape.

[0023] By adopting the above technical solution, the insertion rod is inserted into the through hole through the guide hole, and the guide hole has a guiding effect on the insertion rod, which is beneficial to the docking of the insertion rod and the through hole.

[0024] Optionally, the mounting portion includes a manipulator, a movable end of the manipulator is provided with a mounting seat, and the laser welding gun, the driving device and the wire feeding device are all arranged on the mounting seat.

[0025] By adopting the above technical solution, the movement of the manipulator drives the mounting base to move, and the laser welding gun, the drive device and the wire feeding device can all move together with the mounting base, thereby making the welding angle of the laser welding gun more flexible and the welding system has a wider range of applications and can meet welding needs at various angles.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. With the cooperation of various components in this application, one welding gun can meet different welding requirements in the pontoon welding line. When performing different welding operations, there is no need to switch welding guns, which is convenient to operate and has high welding efficiency;

[0028] 2. The operation of the first driving member can drive the wire feeding device to move vertically, and the operation of the second driving member can drive the wire feeding device to move horizontally, thereby making the wire feeding device move in a wider range, facilitating the flexible docking of the wire feeding device and the laser welding gun, and making the overall welding system more applicable and able to cope with more welding requirements;

[0029] 3. When the left half ring and the right half ring follow the second movable seat to move to the other side of the laser welding gun, the third magnetic block and the first magnetic block attract each other, the fourth magnetic block and the second magnetic block attract each other, and the left half ring and the right half ring rotate to clamp the gun body of the laser welding gun. At this time, the second movable seat establishes a connection with the laser welding gun through the left half ring and the right half ring, thereby improving the stability of the wire feeding device in the process of conveying the iron wire to the laser welding gun, and avoiding interference to the wire feeding device caused by failure or damage of the second hydraulic rod and other collisions; in addition, after the left half ring and the right half ring rotate to clamp the laser welding gun, the continued movement of the second movable seat in the same direction will be restricted, which can avoid excessive movement of the second movable seat, causing the iron wire of the wire feeding device to be affected in the connection with the gun head of the laser welding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a petroleum float laser welding system in an embodiment of the present application;

[0031] Figure 2 It is a schematic diagram of the cooperation between the mounting base, the laser welding gun and the wire feeding device in the embodiment of the present application;

[0032] Figure 3 is a cross-sectional schematic diagram of the cooperation between the laser welding gun and the wire feeding device in the embodiment of the present application;

[0033] Figure 4 It is a cross-sectional schematic diagram of the cooperation between the fixed sleeve, the movable rod and the push spring in the embodiment of the present application.

[0034] Explanation of the accompanying drawings: 1. Laser welding gun; 2. Wire feeding device; 3. Driving device; 31. First hydraulic rod; 32. Second hydraulic rod; 4. First movable seat; 5. Second movable seat; 6. Left half ring; 7. Left extension plate; 8. Right half ring; 9. Right extension plate; 10. First magnetic block; 11. Second magnetic block; 12. Mounting block; 13. Third magnetic block; 14. Fourth magnetic block; 15. First torsion spring; 16. Second torsion spring; 17. Guide block; 18. Through hole; 19. Telescopic part; 191. Telescopic rod; 20. Fixed sleeve; 21. Movable rod; 22. Manipulator; 23. Mounting seat; 24. Push spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The present application embodiment discloses a petroleum float laser welding system. Figure 1 and Figure 2 The oil float laser welding system includes a mounting portion, on which a laser welding gun 1 is arranged, and a driving device 3 and a wire feeding device 2 are arranged on the mounting portion. The driving device 3 is used to drive the wire feeding device 2 to move in a direction away from or close to the laser welding gun 1, and the wire feeding device 2 is used to transport iron wire to the gun head of the laser welding gun 1.

[0037] Reference Figure 1 The mounting part includes a manipulator 22, and a mounting seat 23 is provided at the movable end of the manipulator 22. The laser welding gun 1, the driving device 3 and the wire feeding device 2 are all arranged on the mounting seat 23; the movement of the manipulator 22 can drive the mounting seat 23 to move on the X, Y and Z axes, and the laser welding gun 1, the driving device 3 and the wire feeding device 2 can all move with the mounting seat 23. The welding angle of the laser welding gun 1 is flexible, and the welding system has a wide range of applications and can meet welding requirements at various angles.

[0038] Reference Figure 1 and Figure 2 The driving device 3 includes a first driving member and a second driving member arranged on the mounting seat 23. The first driving member includes a first hydraulic rod 31 vertically installed on the mounting seat 23, and a first movable seat 4 is installed on the movable end of the first hydraulic rod 31; the second driving member includes a second hydraulic rod 32 horizontally installed on the first movable seat 4, the second hydraulic cylinder and the first hydraulic rod 31 are perpendicular to each other, and a second movable seat 5 is installed on the movable end of the second hydraulic rod 32, and the wire feeding device 2 is arranged on the second movable seat 5.

[0039] The telescopic movement of the movable end of the first hydraulic rod 31 can drive the first movable seat 4 to move vertically. The movement of the first movable seat 4 drives the second hydraulic rod 32 and the second movable seat 5 to move. When the second movable seat 5 moves to one side of the laser welding gun 1, the second hydraulic rod 32 operates to drive the second movable seat 5 to move horizontally. The movement of the second movable seat 5 drives the wire feeding device 2 to move. The wire feeding device 2 can thus approach the laser welding gun 1, so that the iron wire on the wire feeding device 2 can dock with the gun head of the laser welding gun 1.

[0040] Reference Figure 2 and Figure 3 A left half ring 6 and a right half ring 8 are rotatably arranged on the second movable seat 5, and a clamping cavity for clamping the gun body of the laser welding gun 1 is formed between the left half ring 6 and the right half ring 8. A left extension plate 7 is extended from one end of the left half ring 6 away from the rotating shaft of the left half ring 6, and a right extension plate 9 is extended from one end of the right half ring 8 away from the rotating shaft of the right half ring 8. A first magnetic block 10 is arranged on the left extension plate 7, and a second magnetic block 11 is arranged on the right extension plate 9. The first magnetic block 10 and the second magnetic block 11 magnetically repel each other. A guide block 17 is fixed to one side of the laser welding gun 1 body close to the second movable seat 5, and an avoidance space is provided on the second movable seat 5 to accommodate the guide block 17. The cross-section of the guide block 17 gradually decreases in the direction away from the laser welding gun 1. A mounting block 12 is fixed to one side of the laser welding gun 1 body away from the second movable seat 5, and a third magnetic block 13 and a fourth magnetic block 14 are respectively fixed on both sides of the mounting block 12. The third magnetic block 13 is magnetically attracted to the first magnetic block 10, and the fourth magnetic block 14 is magnetically attracted to the second magnetic block 11.

[0041] When wire welding is required, the second hydraulic cylinder drives the second movable seat 5 to move in the direction close to the laser welding gun 1, and the wire of the wire feeding device 2 docks with the gun head of the laser welding gun 1. The movement of the second movable seat 5 drives the left half ring 6 and the right half ring 8 to move. Due to the repulsive effect of the first magnetic block 10 and the second magnetic block 11, the left half ring 6 and the right half ring 8 will not rotate to close, and a space for the laser welding gun 1 to pass through is formed between the two; the guide block 17 guides the moving left half ring 6 and the right half ring 8, and the left half ring 6 and the right half ring 8 bypass After the guide block 17, when the two move to the other side of the laser welding gun 1, the third magnetic block 13 and the first magnetic block 10 attract each other, the fourth magnetic block 14 and the second magnetic block 11 attract each other, and the left half ring 6 and the right half ring 8 rotate to clamp the gun body of the laser welding gun 1. At this time, the second movable seat 5 establishes a connection with the laser welding gun 1 through the left half ring 6 and the right half ring 8, and the continued movement of the second movable seat 5 in the same direction will be restricted to avoid excessive movement of the second movable seat 5, which will affect the docking between the iron wire of the wire feeding device 2 and the gun head of the laser welding gun 1.

[0042] Reference Figure 3A first torsion spring 15 is sleeved on the rotating shaft of the left half ring 6, one end of the first torsion spring 15 is fixedly connected to the second movable seat 5, and the other end is fixedly connected to the left half ring 6; a second torsion spring 16 is sleeved on the rotating shaft of the right half ring 8, one end of the second torsion spring 16 is fixedly connected to the second movable seat 5, and the other end is fixedly connected to the right half ring 8.

[0043] The existence of the first torsion spring 15 and the second torsion spring 16 limits the rotation range of the left half ring 6 and the right half ring 8. When the left half ring 6 and the right half ring 8 have not moved to clamp the laser welding gun 1, under the influence of the repulsive magnetism of the first magnetic block 10 and the second magnetic block 11, the left half ring 6 and the right half ring 8 rotate in the direction away from each other. The first torsion spring 15 and the second torsion spring 16 are in a twisted deformation state at this time. Under the elastic force of the first torsion spring 15 and the second torsion spring 16, the rotation range of the left half ring 6 and the right half ring 8 is limited, and the left half ring 6 and the right half ring 8 will not rotate excessively to affect the subsequent docking with the guide block 17.

[0044] Reference Figure 2 and Figure 3 The first magnetic block 10, the second magnetic block 11, the third magnetic block 13, the fourth magnetic block 14 and the mounting block 12 are all provided with through holes 18 that can be connected to each other. The side of the through hole 18 close to the mounting seat 23 is connected to a guide hole that expands outward in a trumpet shape. Figure 3 and Figure 4 The mounting seat 23 is provided with a telescopic portion 19, and the telescopic portion 19 is provided with a fixed sleeve 20. The fixed sleeve 20 is coaxially slidably connected with a movable rod 21, and a push spring 24 is provided in the fixed sleeve 20. One end of the push spring 24 is fixed to the fixed sleeve 20, and the other end is fixed to the movable rod 21; a first limiting ring plate (not shown in the figure) is fixed in the end of the fixed sleeve 20 close to the movable rod 21, and a second limiting ring plate (not shown in the figure) is fixed in the end of the movable rod 21 close to the fixed sleeve 20. The sliding of the movable rod 21 drives the second limiting ring plate to slide. When the second limiting ring plate slides to abut against the first limiting ring plate, the movable rod 21 is restricted from sliding in the same direction, thereby preventing the movable rod 21 from detaching from the fixed sleeve 20.

[0045] When the left half ring 6 and the right half ring 8 follow the movement of the second movable seat 5, the telescopic part 19 can be operated, and the telescopic part 19 drives the fixed sleeve 20 and the movable rod 21 to move, and the movable rod 21 will abut against the adjacent half ring, and the push spring 24 is in a compressed deformation state at this time; when the left half ring 6 and the right half ring 8 rotate until the first magnetic block 10 and the third magnetic block 13 are in contact with each other, the second magnetic block 11 and the fourth magnetic block 14 are in contact with each other, and at this time, the first magnetic block 10, the second magnetic block 11, the third magnetic block 13, the fourth magnetic block 14 and the through hole 18 on the mounting block 12 are interconnected, and the rebound of the push spring 24 drives the movable rod 21 to bounce into the through hole 18 through the guide hole, and the telescopic part 19 then operates again to drive the fixed sleeve 20 and the movable rod 21 to continue to move in the direction close to the through hole 18 until the movable rod 21 and the fixed sleeve 20 are completely inserted into the through hole 18, thereby further fixing the positions of the left half ring 6 and the right half ring 8, and further improving the stability of the wire feeding device 2 in the process of conveying wire to the laser welding gun 1.

[0046] In the embodiment of the present application, the telescopic portion 19 is selected to be an electrically controlled telescopic rod 191. In other embodiments, the telescopic portion 19 may also be selected to be a gas rod or a hydraulic cylinder.

[0047] The implementation principle of a laser welding system for a petroleum float in the embodiment of the present application is as follows: when welding between the bottom plate and the side plate, and between the side plates, the wire feeding device 2 is located on one side of the laser welding gun 1 and feeds the wire to the gun head of the laser welding gun 1, and the laser welding gun 1 operates to perform wire welding, thereby completing the construction of the box structure; when welding the structural plate into the box, the driving device 3 drives the wire feeding device 2 away from the laser welding gun 1 to avoid interfering with the operation of the laser welding gun 1, and the laser welding gun 1 then operates to perform laser welding, thereby completing the connection between the structural plate and the box. With the cooperation of various components in the present application, different welding requirements in the floating box welding operation line can be met by one welding gun. When performing different welding, there is no need to switch the welding gun, which is convenient to operate and has a high efficiency in welding operations.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser welding system for oil floats, characterized by: The invention comprises a mounting portion, on which a laser welding gun (1) is arranged, and on which a driving device (3) and a wire feeding device (2) are arranged, wherein the driving device (3) is used to drive the wire feeding device (2) to move in a direction away from or close to the laser welding gun (1), and the wire feeding device (2) is used to feed iron wire to the gun head of the laser welding gun (1); the driving device (3) comprises a first driving member and a second driving member arranged on the mounting portion, wherein the first driving member is used to drive the wire feeding device (2) to move vertically, and the second driving member is used to drive the wire feeding device (2) to move horizontally; the first driving member comprises a first hydraulic rod (31) arranged on the mounting portion, and a first movable seat (4) is arranged on the movable end of the first hydraulic rod (31); the second driving member comprises a second hydraulic rod (32) arranged on the first movable seat (4), and the second hydraulic rod (32) is used to move horizontally. A second movable seat (5) is arranged at the movable end of the (32), and the wire feeding device (2) is arranged on the second movable seat (5); a left half ring (6) and a right half ring (8) are rotatably arranged on the second movable seat (5), and a clamping cavity for clamping the gun body of the laser welding gun (1) is formed between the left half ring (6) and the right half ring (8), and a first magnetic block (10) is arranged on the left half ring (6), and a second magnetic block (11) is arranged on the right half ring (8), and the first magnetic block (10) and the second magnetic block (11) are magnetically repelled from each other; a mounting block (12) is arranged on the side of the gun body of the laser welding gun (1) away from the second movable seat (5), and a third magnetic block (13) and a fourth magnetic block (14) are respectively arranged on both sides of the mounting block (12), and the third magnetic block (13) and the first magnetic block (10) are magnetically attracted to each other, and the fourth magnetic block (14) and the second magnetic block (11) are magnetically attracted to each other.

2. The oil float laser welding system according to claim 1 is characterized in that: A first torsion spring (15) is sleeved on the rotating shaft of the left half ring (6), one end of the first torsion spring (15) is connected to the second movable seat (5), and the other end is connected to the left half ring (6); a second torsion spring (16) is sleeved on the rotating shaft of the right half ring (8), one end of the second torsion spring (16) is connected to the second movable seat (5), and the other end is connected to the right half ring (8).

3. The oil float laser welding system according to claim 1 is characterized in that: A guide block (17) is provided on one side of the laser welding gun (1) gun body close to the second movable seat (5), and the cross section of the guide block (17) gradually decreases in a direction away from the laser welding gun (1).

4. The oil float laser welding system according to claim 1, characterized in that: The first magnetic block (10), the second magnetic block (11), the third magnetic block (13), the fourth magnetic block (14) and the mounting block (12) are all provided with through holes (18) that can be interconnected, the mounting portion is provided with a telescopic portion (19), the telescopic portion (19) is provided with an insertion rod, and the telescopic portion (19) is used to drive the insertion rod to be inserted into the through hole (18).

5. The oil float laser welding system according to claim 4 is characterized in that: The insertion rod comprises a fixed sleeve (20) arranged on the telescopic portion (19), a movable rod (21) is coaxially slidably connected to the fixed sleeve (20), and a push spring (24) connected to the movable rod (21) is arranged in the fixed sleeve (20).

6. The oil float laser welding system according to claim 4 is characterized in that: The through hole (18) is connected to a guide hole that expands outward in a trumpet shape on one side close to the insertion rod.

7. The oil float laser welding system according to claim 1 is characterized by: The mounting portion comprises a manipulator (22), a movable end of the manipulator (22) being provided with a mounting seat (23), and the laser welding gun (1), the driving device (3) and the wire feeding device (2) are all arranged on the mounting seat (23).

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