Automatic welding machine for oil tank partition plate

Abstract

The invention relates to the field of oil tank forming, and discloses an automatic welding machine for an oil tank partition plate. Comprising a conveying frame, supporting legs installed at the bottom of the conveying frame, two top plates installed on the conveying frame, two welding robots installed on the top plates on the rear side, a feeding assembly installed on the conveying frame and a plurality of clamping assemblies installed on the feeding assembly. The welding device has the following advantages and effects that after an oil tank is fixed, the welding robot on one side firstly welds an oil tank partition plate on one side, then a conveying belt integrally rotates to drive a vertical plate to continuously move, and in the moving process of the vertical plate, a gear installed outside a connecting shaft is engaged with a rack plate in the moving process; and then the connecting shaft drives the clamping back plate to rotate, the fuel tank is reversed, the reversed fuel tank continues to move to make contact with the other welding robot, the fuel tank partition plate on the other side is welded, the partition plates on the two sides of the fuel tank can be continuously welded, and the welding efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank molding, and in particular to an automatic welding machine for oil tank partitions. Background Art

[0002] Automobile fuel tanks are generally made of iron sheets or aluminum alloy sheets that are rolled into a cylindrical or square barrel shape, with partitions set inside and end covers installed on both sides. The seams between the partitions and the end covers are then welded. The installation of partitions can separate the oil return area from the oil suction area. Currently, the fuel tank partitions are usually fixed by welding.

[0003] For example, a new type of tank partition welding machine disclosed in Chinese patent CN112676749A is equipped with a continuous working welding system and controls the rotation of the tank during the transportation of the tank, thereby realizing continuous welding of the tank and increasing welding efficiency. However, when the welding machine performs the rotation reversal welding of the tank during transportation, it can only weld the next tank partition after the previous tank is transported and welded, which has low welding efficiency and is not conducive to continuous welding of the tank. Therefore, we propose an automatic tank partition welding machine. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic welding machine for oil tank partitions, which has the effects of high welding efficiency and stable welding.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic welding machine for a fuel tank partition, comprising a conveying frame, a supporting leg installed at the bottom of the conveying frame, two top plates installed on the conveying frame, two welding robots installed on the top plate at the rear side, a feeding assembly installed on the conveying frame, and a plurality of clamping assemblies installed on the feeding assembly, wherein the clamping assembly comprises two vertical plates installed on the conveying assembly, a connecting shaft rotatably connected to the vertical plates, a clamping back plate installed on the connecting shaft, two clamping plates movably installed on the clamping back plate, and a cylinder installed on the clamping back plate, wherein the output end of the cylinder is fixedly connected to the clamping plate, a control assembly for controlling the rotation of the clamping back plate is provided on the top plate, a limit assembly for limiting the rotation of the connecting shaft is provided on the vertical plate, and the limit assembly is meshed with the control assembly, and when the control assembly controls the rotation of the clamping back plate, the limit assembly does not limit the rotation of the connecting shaft, and when the control assembly controls the clamping back plate not to rotate, the limit assembly limits the rotation of the connecting shaft.

[0006] By adopting the above technical scheme, the oil tank to be welded is placed between two clamping plates, and then the cylinder is started so that the two clamping plates clamp the oil tank. The welding robot on one side first welds the oil tank partition on one side, and then the conveying component is started to drive the oil tank to move. When the oil tank moves to contact with the control component, the clamping back plate can be rotated to reverse the oil tank. The reversed oil tank continues to move to contact with another welding robot to weld the oil tank partition on the other side. The partitions on both sides of the oil tank can be continuously welded, and the welding efficiency is high. At the same time, when the control component controls the clamping back plate to reverse, the limit component does not limit the rotation of the connecting shaft to ensure that the oil tank can reverse normally. When the control component controls the clamping back plate not to rotate, the limit component limits the rotation of the connecting shaft, and the connecting shaft can be limited to avoid the connecting shaft driving the oil tank to shake. In the subsequent welding process, the welding can be more stable. At the same time, the reversing and fixing process of the entire oil tank is realized by the movement of the oil tank on the feeding component, without any power control, simple structure, low production cost, and conducive to saving resources.

[0007] The present invention is further configured as follows: a reinforcing plate having one end connected to the conveying frame is installed on the top plate, and a side of the reinforcing plate away from the conveying frame is configured as an inclined surface.

[0008] The adoption of the above technical solution is helpful to improve the stability of the connection between the top plate and the conveying frame.

[0009] The present invention is further configured as follows: the feeding assembly includes two conveying rollers rotatably connected to the inner side of the conveying frame, a conveyor belt drivingly connected to the two conveying rollers, and a feeding motor installed on the conveying frame for driving one of the conveying rollers to rotate, and the vertical plate is installed on the conveyor belt.

[0010] By adopting the above technical solution, the feeding motor is started to drive one of the conveyor rollers to rotate, and the conveyor roller drives the other conveyor roller to rotate through the conveyor belt, so that the conveyor belt can rotate as a whole, thereby driving the multiple clamped oil tanks on the vertical plate to be welded by two welding robots.

[0011] The present invention is further configured as follows: opposite sides of the two clamping plates are provided with clamping grooves that fit with the outer wall of the oil tank.

[0012] By adopting the above technical solution, the arrangement of the card slot facilitates engagement with the outside of the oil tank, making it easier to clamp the oil tank more stably.

[0013] The present invention is further configured as follows: the control assembly includes a rack plate installed at the bottom of the top plate, a gear installed outside the connecting shaft and meshing with the rack plate, and a bevel gear 1 installed outside the connecting shaft.

[0014] By adopting the above technical solution, after the oil tank is fixed, the welding robot on one side first welds the oil tank partition on one side, and then the conveyor belt rotates as a whole to drive the vertical plate to move continuously. During the movement of the vertical plate, the gear installed on the outside of the connecting shaft engages with the rack plate during the movement, so that the connecting shaft drives the clamping back plate to rotate and reverse the oil tank. After the reversal, the oil tank continues to move until it contacts another welding robot to weld the oil tank partition on the other side. The partitions on both sides of the oil tank can be continuously welded, and the welding efficiency is high.

[0015] The present invention is further configured as follows: a mounting hole is provided inside the vertical plate, a bearing is installed in the mounting hole, and the connecting shaft is rotatably connected to the vertical plate via the bearing.

[0016] By adopting the above technical solution, the bearing is used to support the connection shaft to rotate on the vertical plate.

[0017] The present invention is further configured as follows: the limiting assembly includes a rectangular frame movably installed in the mounting hole and located outside the connecting shaft, a frame rod installed on the inner bottom wall of the rectangular frame, an arc rod hinged on the frame rod, a protrusion installed on the arc rod, a spring connecting the arc rod and the inner bottom wall of the rectangular frame, a rotating screw rod rotatably connected between the bottom of the rectangular frame and the inner bottom wall of the mounting hole, a threaded sleeve threadedly connected to the outside of the rotating screw rod, a connecting disk rotatably connected to the outside of the threaded sleeve, a connecting rope connecting the connecting disk and the arc rod, and a connecting ring connected to the outside of the connecting shaft.

[0018] The present invention is further configured as follows: the limit assembly further comprises a second bevel gear mounted on the outside of the rotating screw, the second bevel gear meshes with the first bevel gear, and a groove matching the protrusion is formed on the connecting ring.

[0019] By adopting the above technical solution, when the connecting shaft drives the clamping back plate to rotate, the bevel gear one rotates synchronously with the connecting shaft, and the bevel gear one meshes with the bevel gear two, so that the rotating screw rod rotates at the same time, thereby driving the threaded sleeve outside it to move downward, and the connecting plate moves downward with the threaded sleeve, so that the connecting rope drives the arc rod to deflect with the frame rod as the center, so that the protrusion on the arc rod is separated from the groove on the connecting ring, and the restriction on the connecting shaft is released. The connecting shaft rotates to drive the clamping back plate to reverse the oil tank. When the reversal is completed, the gear is separated from the rack plate, the rotating screw rod no longer rotates, and the connecting rope no longer bears the downward pulling force. At this time, the spring reset pushes the protrusion on the arc rod to clamp with the groove on the connecting ring again, thereby restricting the connecting shaft from rotating, avoiding the connecting shaft from driving the oil tank to shake, and the welding can be more stable in the subsequent welding process.

[0020] The present invention is further configured as follows: the circumference of the connecting shaft is equal to the length of the rack plate.

[0021] By adopting the above technical solution, the gear is meshed with the rack plate, the length of the rack plate is equal to the rotational circumference of the gear, and the circumference of the connecting shaft is equal to the length of the rack plate, so that it can be ensured that the connecting shaft can rotate a complete circle after the gear rotates on the rack plate, so that the connecting shaft can return to its original state after rotation reversal, and ensure that the oil tank can still return to its initial state after rotation, so that the oil tank and the conveying frame are vertically arranged, which is convenient for welding the inside of the oil tank.

[0022] The present invention is further configured as follows: the two welding robots are respectively located on the left and right sides of the rack plate.

[0023] By adopting the above technical solution, the conveyor belt drives the oil tank clamped on the clamping plate to move from left to right. When starting to move, the welding robot on the left side first welds the partition on one side of the oil tank. Then, when it moves to the rack plate, the oil tank can be reversed. After the reversal, the welding robot on the other side welds the partition on the other side of the oil tank. The partitions on both sides of the oil tank can be continuously welded, and the welding efficiency is high.

[0024] The beneficial effects of the present invention are:

[0025] 1. After the oil tank is fixed, the welding robot on one side first welds the oil tank partition on one side, and then the conveyor belt rotates as a whole to drive the vertical plate to move continuously. During the movement of the vertical plate, the gear installed on the outside of the connecting shaft engages with the rack plate during the movement, so that the connecting shaft drives the clamping back plate to rotate and reverse the oil tank. After the reversal, the oil tank continues to move until it contacts another welding robot to weld the oil tank partition on the other side. The partitions on both sides of the oil tank can be continuously welded with high welding efficiency.

[0026] 2. When the connecting shaft drives the clamping back plate to rotate, bevel gear 1 rotates synchronously with the connecting shaft, and bevel gear 1 meshes with bevel gear 2, so that the rotating screw rod rotates at the same time, thereby driving the threaded sleeve outside it to move downward, and the connecting plate moves downward with the threaded sleeve, so that the connecting rope drives the arc rod to deflect with the frame rod as the center, so that the protrusion on the arc rod is separated from the groove on the connecting ring, and the restriction on the connecting shaft is released. The connecting shaft rotates to drive the clamping back plate to reverse the oil tank. After the reversal is completed, the gear is separated from the rack plate, the rotating screw rod no longer rotates, and the connecting rope no longer bears the downward pulling force. At this time, the spring reset pushes the protrusion on the arc rod to re-clamp with the groove on the connecting ring, thereby limiting the rotation of the connecting shaft and preventing the oil tank from shaking due to the connecting shaft. In the subsequent welding process, the welding can be more stable.

[0027] 3. The reversing and fixing process of the entire oil tank is realized by the movement of the oil tank on the conveyor belt. It does not require any power control, has a simple structure, low production cost, and is conducive to saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the side structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 3 It is a partial schematic diagram of the connection between the clamping assembly and the feeding assembly of the present invention;

[0032] Figure 4 The present invention Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 It is a schematic diagram of the connection structure between the control component and the connecting shaft of the present invention.

[0034] In the figure, 1. conveying frame; 2. supporting legs; 3. top plate; 4. welding robot; 5. reinforcement plate; 6. feeding assembly; 61. conveying roller; 62. conveyor belt; 63. feeding motor; 7. clamping assembly; 71. vertical plate; 72. connecting shaft; 73. clamping back plate; 74. clamping plate; 75. cylinder; 8. control assembly; 81. rack plate; 82. gear; 83. bevel gear one; 9. limit assembly; 91. rectangular frame; 92. rack rod; 93. arc rod; 94. protrusion; 95. spring; 96. rotating screw; 97. threaded sleeve; 98. connecting plate; 99. connecting rope; 910. connecting ring; 911. bevel gear two; 10. slot; 11. mounting hole; 12. bearing; 13. groove. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-5The present invention provides an automatic welding machine for oil tank partitions, comprising a conveying frame 1, a supporting leg 2 installed at the bottom of the conveying frame 1, two top plates 3 installed on the conveying frame 1, two welding robots 4 installed on the top plates 3 at the rear side, a feeding assembly 6 installed on the conveying frame 1, and a plurality of clamping assemblies 7 installed on the feeding assembly 6, wherein the clamping assembly comprises two vertical plates 71 installed on the conveying assembly, a connecting shaft 72 rotatably connected to the vertical plates 71, a clamping back plate 73 installed on the connecting shaft 72, and a clamping back plate 73 movably installed on the clamping back plate 73. There are two clamping plates 74 on the top plate 3 and a cylinder 75 installed on the clamping back plate 71, the output end of the cylinder 75 is fixedly connected to the clamping plate 74, the top plate 3 is provided with a control component 8 for controlling the rotation of the clamping back plate 73, and the vertical plate 71 is provided with a limit component 9 for limiting the rotation of the connecting shaft 72, the limit component 9 is engaged with the control component, when the control component 8 controls the clamping back plate 73 to rotate, the limit component 9 does not limit the rotation of the connecting shaft 72, when the control component 8 controls the clamping back plate 73 not to rotate, the limit component 9 limits the rotation of the connecting shaft 72.

[0037] The oil tank to be welded is placed between the two clamping plates 74, and then the cylinder 75 is started so that the two clamping plates 75 clamp the oil tank. The welding robot 4 on one side first welds the oil tank partition on one side, and then the conveying component is started to drive the oil tank to move. When the oil tank moves to contact with the control component 8, the clamping back plate 3 can be rotated to reverse the oil tank. After the reversal, the oil tank continues to move to contact with another welding robot to weld the oil tank partition on the other side. The partitions on both sides of the oil tank can be continuously welded, and the welding efficiency is high. At the same time, the control component When the control clamping back plate 73 is reversed, the limit assembly 9 does not limit the rotation of the connecting shaft 72, ensuring that the oil tank can reverse normally. When the control assembly 8 controls the clamping back plate 73 not to rotate, the limit assembly 9 limits the rotation of the connecting shaft 72. The connecting shaft 72 can be limited to prevent the connecting shaft 72 from causing the oil tank to shake, and the welding can be more stable in the subsequent welding process. At the same time, the reversing and fixing process of the entire oil tank is realized by the movement of the oil tank on the feeding assembly. No power control is required, the structure is simple, the production cost is low, and it is conducive to saving resources.

[0038] A reinforcing plate 5 having one end connected to the conveying frame 1 is installed on the top plate 3 , and a side of the reinforcing plate 5 away from the conveying frame 1 is set as an inclined surface, which is beneficial to improve the stability of the connection between the top plate 3 and the conveying frame 1 .

[0039] The feeding assembly 6 includes two conveying rollers 61 rotatably connected to the inner side of the conveying frame 1, a conveyor belt 62 drivingly connected to the two conveying rollers 61, and a feeding motor 63 installed on the conveying frame 1 for driving one of the conveying rollers 61 to rotate. The vertical plate 71 is installed on the conveyor belt 62. When the feeding motor 63 is started, it drives one of the conveying rollers 61 to rotate. The conveying roller 61 drives the other conveying roller 61 to rotate through the conveyor belt 62, so that the conveyor belt 62 can rotate as a whole, thereby driving the multiple clamped oil tanks on the vertical plate 71 to be welded by the two welding robots 4.

[0040] The opposite sides of the two clamping plates 74 are provided with clamping grooves 10 that fit with the outer wall of the oil tank. The arrangement of the clamping grooves 10 facilitates the clamping with the outside of the oil tank, so as to facilitate more stable clamping of the oil tank.

[0041] The control component 8 includes a rack plate 81 installed at the bottom of the top plate 3, a gear 82 installed on the outside of the connecting shaft 72 and meshing with the rack plate 81, and a bevel gear 83 installed on the outside of the connecting shaft 72. After the oil tank is fixed, the welding robot 4 on one side first welds the oil tank partition on one side, and then the conveyor belt 62 rotates as a whole to drive the vertical plate 71 to move continuously. During the movement of the vertical plate 71, the gear 82 installed on the outside of the connecting shaft 72 meshes with the rack plate 81 during the movement, so that the connecting shaft 72 drives the clamping back plate 73 to rotate, and the oil tank is reversed. After the reversal, the oil tank continues to move until it contacts another welding robot to weld the oil tank partition on the other side. The partitions on both sides of the oil tank can be continuously welded, and the welding efficiency is high.

[0042] A mounting hole 11 is formed inside the vertical plate 71 , and a bearing 12 is installed in the mounting hole 11 . The connecting shaft 72 is rotatably connected to the vertical plate 71 via the bearing 12 . The bearing 12 is used to support the connecting shaft 72 to rotate on the vertical plate 71 .

[0043] The limiting assembly 9 includes a rectangular frame 91 movably installed in the mounting hole 11 and located outside the connecting shaft 72, a frame rod 92 installed on the inner bottom wall of the rectangular frame 91, an arc rod 93 hinged on the frame rod 92, a protrusion 94 installed on the arc rod 93, a spring 95 connecting the arc rod 93 and the inner bottom wall of the rectangular frame 91, a rotating screw rod 96 rotatably connected between the bottom of the rectangular frame 91 and the inner bottom wall of the mounting hole 11, a threaded sleeve 97 threadedly connected to the outside of the rotating screw rod 96, a connecting disk 98 rotatably connected to the outside of the threaded sleeve 97, a connecting rope 99 connecting the connecting disk 98 and the arc rod 93, and a connecting ring 910 connected to the outside of the connecting shaft 72. The limiting assembly also includes a bevel gear 2 911 installed on the outside of the rotating screw rod 96, the bevel gear 2 911 is meshed with the bevel gear 1 83, and the connecting ring 910 is provided with a groove 13 adapted to the protrusion 94.

[0044] When the connecting shaft 72 drives the clamping back plate 73 to rotate, the bevel gear 1 83 rotates synchronously with the connecting shaft 72, and the bevel gear 1 83 meshes with the bevel gear 2 911, so that the rotating screw rod 96 rotates at the same time, thereby driving the threaded sleeve 97 outside it to move downward, and the connecting plate 98 moves downward with the threaded sleeve 97, so that the connecting rope 99 drives the arc rod 93 to deflect with the frame rod 92 as the center of the circle, so that the protrusion 94 on the arc rod 93 is separated from the groove 13 on the connecting ring 910, and the restriction on the connecting shaft 72 is released. The connecting shaft 72 rotates to drive the clamping back plate 73 to reverse the oil tank. When the reversing is completed, the gear 82 is separated from the rack plate 81, the rotating screw rod 96 no longer rotates, and the connecting rope 99 no longer bears the downward pulling force. At this time, the spring 95 resets and pushes the protrusion 94 on the arc rod 93 to clamp with the groove 13 on the connecting ring 910 again, thereby restricting the connecting shaft 72 from rotating, avoiding the connecting shaft 72 from driving the oil tank to shake, and the welding can be more stable in the subsequent welding process.

[0045] The circumference of the connecting shaft 72 is equal to the length of the rack plate 81, the gear 82 is meshed with the rack plate 81, the length of the rack plate 81 is equal to the rotational circumference of the gear 82, and the circumference of the connecting shaft 72 is equal to the length of the rack plate 81, which can ensure that the connecting shaft 72 can rotate a complete circle after the gear 82 rotates on the rack plate 81, so that the connecting shaft 72 can return to its original state after the rotation reversal, ensuring that the oil tank can still return to its initial state after rotation, so that the oil tank and the conveying frame 1 are vertically arranged, which is convenient for welding the inside of the oil tank.

[0046] The two welding robots 4 are respectively located on the left and right sides of the rack plate 81. The conveyor belt 62 drives the oil tank clamped on the clamping plate 74 to move from left to right. When starting to move, the welding robot 4 on the left first welds the partition on one side of the oil tank, and then when it moves to the rack plate 81, the oil tank can be reversed. After the reversal, the welding robot on the other side welds the partition on the other side of the oil tank. The partitions on both sides of the oil tank can be continuously welded, and the welding efficiency is high.

Claims

1. An automatic welding machine for oil tank partitions, comprising a conveyor frame (1), a support leg (2) mounted at the bottom of the conveyor frame (1), two top plates (3) mounted on the conveyor frame (1), two welding robots (4) mounted on the top plates (3) at the rear side, a feeding assembly (6) mounted on the conveyor frame (1), and a plurality of clamping assemblies (7) mounted on the feeding assembly (6), characterized in that: The clamping assembly comprises two vertical plates (71) mounted on the conveying assembly, a connecting shaft (72) rotatably connected to the vertical plates (71), a clamping back plate (73) mounted on the connecting shaft (72), two clamping plates (74) movably mounted on the clamping back plate (73), and a cylinder (75) mounted on the clamping back plate (71), wherein the output end of the cylinder (75) is fixedly connected to the clamping plate (74), and the top plate (3) is provided with A control component (8) controls the rotation of the clamping back plate (73); a limit component (9) is provided on the vertical plate (71) to limit the rotation of the connecting shaft (72); the limit component (9) is engaged with the control component; when the control component (8) controls the rotation of the clamping back plate (73), the limit component (9) does not limit the rotation of the connecting shaft (72); when the control component (8) controls the non-rotation of the clamping back plate (73), the limit component (9) limits the rotation of the connecting shaft (72).

2. The automatic welding machine for fuel tank partition according to claim 1 is characterized in that: A reinforcing plate (5) having one end connected to the conveying frame (1) is mounted on the top plate (3); a side of the reinforcing plate (5) away from the conveying frame (1) is configured as an inclined surface.

3. The automatic welding machine for fuel tank partition according to claim 2 is characterized in that: The feeding assembly (6) comprises two conveying rollers (61) rotatably connected to the inner side of the conveying frame (1), a conveying belt (62) drivingly connected to the two conveying rollers (61), and a feeding motor (63) installed on the conveying frame (1) for driving one of the conveying rollers (61) to rotate, and the vertical plate (71) is installed on the conveying belt (62).

4. The automatic welding machine for fuel tank partition according to claim 3 is characterized in that: The opposite sides of the two clamping plates (74) are provided with clamping grooves (10) which fit in with the outer wall of the oil tank.

5. The automatic welding machine for fuel tank partition according to claim 4 is characterized in that: The control assembly (8) comprises a rack plate (81) mounted on the bottom of the top plate (3), a gear (82) mounted on the outside of the connecting shaft (72) and meshing with the rack plate (81), and a bevel gear (83) mounted on the outside of the connecting shaft (72).

6. The automatic welding machine for fuel tank partition according to claim 5, characterized in that: A mounting hole (11) is provided inside the vertical plate (71), a bearing (12) is installed in the mounting hole (11), and the connecting shaft (72) is rotatably connected to the vertical plate (71) via the bearing (12).

7. The automatic welding machine for fuel tank partition according to claim 6, characterized in that: The limiting assembly (9) comprises a rectangular frame (91) movably mounted in the mounting hole (11) and located outside the connecting shaft (72), a frame rod (92) mounted on the inner bottom wall of the rectangular frame (91), an arcuate rod (93) hinged on the frame rod (92), a protrusion (94) mounted on the arcuate rod (93), a spring (95) connecting the arcuate rod (93) and the inner bottom wall of the rectangular frame (91), a rotating screw rod (96) rotatably connected between the bottom of the rectangular frame (91) and the inner bottom wall of the mounting hole (11), a threaded sleeve (97) threadedly connected to the outside of the rotating screw rod (96), a connecting disk (98) rotatably connected to the outside of the threaded sleeve (97), a connecting rope (99) connecting the connecting disk (98) and the arcuate rod (93), and a connecting ring (910) connected to the outside of the connecting shaft (72).

8. The automatic welding machine for fuel tank partition according to claim 7, characterized in that: The limiting assembly also includes a second bevel gear (911) installed outside the rotating screw (96), the second bevel gear (911) meshing with the first bevel gear (83), and a groove (13) matching the protrusion (94) is formed on the connecting ring (910).

9. The automatic welding machine for fuel tank partition according to claim 8, characterized in that: The circumference of the connecting shaft (72) is equal to the length of the rack plate (81).

10. The fuel tank partition automatic welding machine according to claim 9, characterized in that: The two welding robots (4) are respectively located on the left and right sides of the rack plate (81).

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