Tank body automatic girth welding machine

Abstract

The utility model discloses an automatic tank girth welding machine which comprises a working table, a welding station is arranged in the middle of the top end of the working table, and a first centering assembly and a second centering assembly are installed at the two ends of the welding station in the length direction of the working table respectively. The first centering assembly and the second centering assembly are in sliding connection with the workbench. The transplanting assembly and the transplanting mechanical arm are arranged for cooperative operation, automatic feeding and discharging of the tank body are achieved, the welding assembly, the first centering assembly and the second centering assembly are installed on the workbench and used for achieving automatic positioning of the tank body and driving and controlling the tank body to rotate at a constant speed for girth welding, and the welding efficiency is improved. The position of the welding assembly can be flexibly adjusted to ensure accurate welding, through cooperation of all the assemblies, the automation degree of the tank welding process is improved, the welding efficiency and the welding quality are improved, and the automatic production requirement of the tank manufacturing industry is met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of welding equipment, in particular to a tank automatic girth welding machine. BACKGROUND

[0002] In the tank manufacturing process, a plurality of components connected to each other in a virtual manner need to be welded through girth welding to form a tank with integrated connection and good air tightness.

[0003] The traditional welding method mainly relies on manual operation, and manual handling of the tank is time-consuming and labor-intensive, resulting in low welding efficiency, fatigue during welding and operation errors, and different operation methods of welders can also cause uneven heating at the joint, affecting the welding quality. The welding environment is often accompanied by harmful factors such as high temperature, strong light and smoke, which can harm the health of workers.

[0004] Therefore, the application provides a tank automatic girth welding machine to solve the above problems. CONTENT OF THE INVENTION

[0005] The application aims to provide a tank automatic girth welding machine to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a tank automatic girth welding machine, comprising a workbench, a welding station is arranged at the top of the middle of the workbench, a first centering assembly and a second centering assembly are respectively arranged at the two ends of the welding station in the length direction of the workbench, the first centering assembly and the second centering assembly are slidably connected with the workbench, a welding assembly that can slide to the upper side of the welding station is arranged above the second centering assembly, a transplanting assembly is arranged above the welding station, the transplanting assembly comprises a support frame fixedly arranged above the welding station, a cross beam perpendicular to the length direction of the workbench and extending outward at one end is arranged at the top of the support frame, and a transplanting feeding device is slidably connected in the cross beam.

[0007] Preferably, the first centering assembly comprises a first fixed plate fixedly connected with the end face of the workbench, a first movable plate is slidably connected with the first fixed plate through a sliding table, a first clamping cylinder is arranged on the end of the first fixed plate away from the welding station, the output end of the first clamping cylinder is drivingly connected with the first movable plate, and a first centering cage perpendicular to the end face of the workbench is arranged on the other end of the first movable plate.

[0008] Preferably, a rotating disc is arranged between the first centering cage and the first movable plate and fixedly connected with the first centering cage, a first rotating drive motor is further arranged on the end of the first movable plate away from the first centering cage, and the first rotating drive motor is drivingly connected with the rotating disc.

[0009] Preferably, the second centering component includes a second fixed plate fixed on the side end face of the worktable away from the first centering component. The second fixed plate is slidably connected to a second movable plate via a slide table. A second clamping cylinder is installed on one end of the second fixed plate near the edge of the worktable. The output end of the second clamping cylinder is driven and connected to the second movable plate. A second centering cage coaxial with the first centering cage is installed on the other end of the second movable plate.

[0010] Preferably, the second centering cage is rotatably connected to the second movable plate, and a push cylinder is installed on the end of the second movable plate away from the second centering cage. The output end of the push cylinder can move through the second movable plate and extend into the second centering cage.

[0011] Preferably, an auxiliary support assembly is fixedly installed on the workbench directly below the welding station. The auxiliary support assembly includes two support mechanisms installed opposite each other at the bottom of the welding station on the workbench. Each support mechanism includes a base, which is fixedly connected to the workbench. A support plate is slidably connected to the base in the vertical direction. A freely rotatable auxiliary roller group is fixedly installed on the top of the support plate. The auxiliary roller group is coaxial with the length direction of the workbench. A support cylinder is installed inside the base, and the output end of the support cylinder is drivenly connected to the support plate.

[0012] Preferably, the welding assembly includes a first fixed base with one end fixedly connected to the end face of the workbench. The other end of the first fixed base is disposed above the second centering assembly, and a first slide is slidably mounted on the end face of the first slide along the length direction of the workbench. A first drive motor is mounted on the end of the first slide away from the welding station to drive the first slide to slide relative to the first fixed base. A longitudinally arranged second slide is slidably mounted on the front end of the first slide away from the first drive motor. A second drive motor is provided at the top of the second slide. A front panel is slidably mounted on the end face of the second slide relative to the welding station. The front panel is drivenly connected to the second drive motor. A welding gun is fixedly mounted on the front panel, and the welding gun is connected to a welding system.

[0013] Preferably, a load-bearing beam is slidably connected to the top surface of the crossbeam via a guide rail slider, a rack is fixed to one end of the crossbeam along its length, a transplanting motor is fixedly installed on the load-bearing beam, and an active tooth that meshes with the rack is installed at the output end of the transplanting motor.

[0014] Preferably, the transplanting and feeding device includes a drive lifting assembly mounted on a support beam, and a transplanting robotic arm is fixedly connected to one bottom end of the drive lifting assembly.

[0015] Preferably, the drive lifting assembly includes a second fixed base fixedly connected to the bearing beam. The second fixed base is provided with a first lifting cylinder and a second lifting cylinder coaxially arranged in the vertical direction. The output ends of the first lifting cylinder and the second lifting cylinder are arranged opposite to each other and abut against each other. The second lifting cylinder is located directly above the first lifting cylinder and a connecting plate is installed at one end of its bottom. The output end of the second lifting cylinder passes through the connecting plate and is connected to and abuts against the output end of the first lifting cylinder. The other end of the connecting plate is connected to a transplanting robotic arm, and a gripper is installed at the bottom of the transplanting robotic arm.

[0016] The present invention provides an automatic circumferential seam welding machine for tanks. Compared with the prior art, its advantages are as follows: The present invention achieves automatic loading and unloading of tanks by setting up a transfer component and a transfer robotic arm to work together. By installing a welding component and a first centering component and a second centering component on the worktable, the machine achieves automatic positioning of the tank and drives and controls the tank to rotate at a uniform speed for circumferential seam welding. The welding component can flexibly adjust its position to ensure welding accuracy. Through the coordinated cooperation between the components, the automation level of the tank welding process is improved, as well as the welding efficiency and welding quality. It is suitable for the automated production needs of the tank manufacturing industry. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front view structural diagram of the present utility model;

[0019] Figure 3 This is a three-dimensional perspective view of the installation structure between the first centering component, the second centering component and the worktable of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the auxiliary support structure of this utility model;

[0021] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the auxiliary support structure of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the welding assembly of this utility model;

[0023] Figure 7 This is a three-dimensional schematic diagram of the installation structure between the transplanting component and the transplanting robotic arm of this utility model.

[0024] Figure 8 This is a three-dimensional schematic diagram of the internal structure of the transplanting component of this utility model.

[0025] In the diagram: 1. Workbench; 2. First centering assembly; 21. First fixed plate; 22. First clamping cylinder; 23. First movable plate; 24. First centering cage; 25. First rotary drive motor; 3. Welding station; 4. Auxiliary support assembly; 41. Base; 42. Support plate; 43. Auxiliary roller group; 44. Support cylinder; 5. Second centering assembly; 51. Second fixed plate; 52. Second clamping cylinder; 53. Second movable plate; 54. Pushing cylinder; 56. Second centering cage; 6. Welding assembly; 61. First fixed seat; 62. First slide; 63. First drive motor; 64. Second slide; 65. Second drive motor; 66. Front panel; 67. Welding torch; 7. Welding system; 8. Transplanting assembly; 81. Support frame; 82. Crossbeam; 821. Rack; 822. Transplanting motor; 823. Bearing beam; 83. Drive lifting assembly; 831. Second fixed seat; 832. First lifting cylinder; 833. Second lifting cylinder; 834. Connecting plate; 9. Transplanting robotic arm; 91. Gripper. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0030] In addition, the term "multiple" should mean two or more.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0032] like Figures 1 to 8 As shown, an automatic circumferential seam welding machine for tanks includes a workbench 1. A welding station 3 is located at the top center of the workbench 1. A first centering component 2 and a second centering component 5 are respectively installed at both ends of the welding station 3 along the length of the workbench 1. The first centering component 2 and the second centering component 5 are slidably connected to the workbench 1. A welding component 6, which can slide to the welding station 3, is installed above the second centering component 5. A transfer component 8 is installed directly above the welding station 3. The transfer component 8 includes a support frame 81 fixedly installed above the welding station 3. A crossbeam 82, perpendicular to the length of the workbench 1 and extending outward at one end, is installed at the top of the support frame 81. A transfer feeding device is slidably connected to the crossbeam 82. In use, the welding station 3 is moved to the welding station 3 at both ends. The system includes a first centering component 2 and a second centering component 5 that are slidably connected to the workbench 1. This allows the first centering component 2 and the second centering component 5 to be positioned relative to the workbench 1, facilitating clamping and fixing of the tank from both ends and rotating the tank for circumferential welding. Above the second centering component 5 is a welding component 6 that can slide to the welding station 3 for welding the joints of the tank. The transfer component 8 is located directly above the welding station 3 and is used to transport the tank and other materials to the welding station 3. The crossbeam 82 of the transfer component 8 is perpendicular to the length of the workbench 1 and extends outward at one end. A transfer feeding device is slidably connected to the crossbeam 82. Through the cooperation of the crossbeam 82 and the transfer feeding device, the tank can be picked up and accurately transported to the welding station 3.

[0033] Furthermore, the first centering component 2 includes a first fixed plate 21 fixedly connected to the end face of the workbench 1. A first movable plate 23 is slidably connected to the first fixed plate 21 via a slide table. A first clamping cylinder 22 is installed on the end of the first fixed plate 21 away from the welding station 3. The output end of the first clamping cylinder 22 is drivenly connected to the first movable plate 23. A first centering cage 24 perpendicular to the end face of the workbench 1 is installed on the other end of the first movable plate 23. During use, the first clamping cylinder 22 is activated to position the tank. The first movable plate 23 is pushed to move, thereby driving the first centering cage 24 closer to the tank body. The first centering cage 24 is a columnar cage structure with one end open, which is used to abut against the arc surface of one end of the tank body, thereby cooperating with the second centering component 5 to clamp the tank body. During the process of clamping and tightening the tank body at both ends, the arc surfaces at both ends make tangential movements with the first centering component 2 and the second centering component 5 respectively, thereby achieving centering and fixing, thus preventing the welding component 6 and the joint to be welded to the tank body from always being in the same plane during the rotational circumferential weld.

[0034] Furthermore, a rotating disk is provided between the first centering cage 24 and the first movable plate 23, and the rotating disk is fixedly connected to the first centering cage 24. A first rotary drive motor 25 is also installed on the end of the first movable plate 23 facing away from the first centering cage 24. The first rotary drive motor 25 is connected to the rotating disk. In use, there is a rotating disk on the first movable plate 23, and the first rotary drive motor 25 is connected to the rotating disk. After the tank is centered and positioned, the first rotary drive motor 25 can drive the rotating disk to rotate, thereby driving the tank to rotate and realizing circumferential welding.

[0035] Furthermore, the second centering assembly 5 includes a second fixed plate 51 fixed on the side end face of the worktable 1 away from the first centering assembly 2. The second fixed plate 51 is slidably connected to a second movable plate 53 via a slide table. A second clamping cylinder 52 is installed on one end of the second fixed plate 51 near the edge of the worktable 1. The output end of the second clamping cylinder 52 is driven and connected to the second movable plate 53. A second centering cage 56 coaxial with the first centering cage 24 is installed on the other end of the second movable plate 53. It is used to cooperate with the first centering cage 24 to fix it at both ends of the tank, clamp the tank, and drive it to rotate through the first rotary drive motor 25.

[0036] Furthermore, the second centering cage 56 is rotatably connected to the second movable plate 53. A push cylinder 54 is installed on the end of the second movable plate 53 away from the second centering cage 56. The output end of the push cylinder 54 can move through the second movable plate 53 and extend into the second centering cage 56. In use, the output end of the push cylinder passes through the second movable plate 53 and abuts against the bottom wall of the tank, which helps the second centering cage 56 to separate quickly from the tank and avoid jamming.

[0037] Furthermore, an auxiliary support assembly 4 is fixedly installed directly below the welding station 3 on the workbench 1. The auxiliary support assembly 4 includes two support mechanisms installed opposite each other at the bottom of the welding station 3 on the workbench 1. Each support mechanism includes a base 41, which is fixedly connected to the workbench 1. A support plate 42 is slidably connected to the base 41 in the vertical direction. An auxiliary roller group 43 that can rotate freely is fixedly installed on the top of the support plate 42. The auxiliary roller group 43 is coaxial with the length direction of the workbench 1. A support cylinder 44 is installed inside the base 41. The output end of the support cylinder 44 is drivenly connected to the support plate 42. During the welding process, the auxiliary support assembly 4 can provide bottom support for the tank. By adjusting the height of the support plate 42 through the support cylinder 44, the two sets of auxiliary roller groups 43 are brought into close contact with the bottom arc surface of the tank, reducing the frictional resistance experienced by the tank during rotation and providing stable support for the circumferential welding of the tank.

[0038] Furthermore, the welding assembly 6 includes a first fixed base 61 with one end fixedly connected to the end face of the workbench 1. The other end of the first fixed base 61 is disposed above the second centering assembly 5, and a first slide 62 is slidably mounted on its end face along the length direction of the workbench 1. A first drive motor 63 is mounted on the end of the first slide 62 away from the welding station 3 to drive the first slide 62 to slide relative to the first fixed base 61. A longitudinally arranged second slide 64 is slidably mounted on the front end of the first slide 62 away from the first drive motor 63. The top of the second slide 64 is provided with a second A front panel 66 is slidably mounted on the end face of the second slide table 64 relative to the welding station 3, driven by the drive motor 65. The front panel 66 is driven and connected to the second drive motor 65. A welding torch 67 is fixedly mounted on the front panel 66. The welding torch 67 is connected to the welding system 7. The first drive motor 63 drives the first slide table 62 to move laterally relative to the axis of the tank, and the second drive motor 65 drives the front panel 66 to move up and down, so that the welding torch 67 can move flexibly above the tank and can be precisely aligned with the joint to be welded, thereby ensuring the accuracy of the welding.

[0039] Furthermore, a support beam 823 is slidably connected to the top surface of the crossbeam 82 via a guide rail slider. A rack 821 is fixed to one end of the crossbeam 82 along its length. A transplanting motor 822 is fixedly installed on the support beam 823. The output end of the transplanting motor 822 is equipped with an active tooth that meshes with the rack 821. In use, the top surface of the crossbeam 82 is slidably connected to the support beam 823 via the guide rail slider. The rack 821 is fixed to one end of the crossbeam 82. The active tooth at the output end of the transplanting motor 822 on the support beam 823 meshes with the rack 821. The transplanting motor 822 works, driving the support beam 823 to move along the length of the crossbeam 82, thereby driving the entire drive lifting assembly 83 and the transplanting robotic arm 9 to move horizontally.

[0040] Furthermore, the transplanting and feeding device includes a drive lifting assembly 83 mounted on the support beam 823, with a transplanting robotic arm 9 fixedly connected to one bottom end of the drive lifting assembly 83 for transferring the tank.

[0041] Furthermore, the drive lifting assembly 83 includes a second fixed base 831 fixedly connected to the supporting beam 823. A first lifting cylinder 832 and a second lifting cylinder 833 are coaxially arranged on the second fixed base 831 along the vertical direction. The output ends of the first lifting cylinder 832 and the second lifting cylinder 833 are arranged opposite to each other and abut against each other. The second lifting cylinder 833 is located directly above the first lifting cylinder 832, and a connecting plate 834 is installed at one end of its bottom. The output end of the second lifting cylinder 833 passes through the connecting plate 834 and connects to and abuts against the output end of the first lifting cylinder 832. The other end of the connecting plate 834 is connected to a transplanting robotic arm 9. A gripper 91 is installed at the bottom of the transplanting robotic arm 9. In use, the first lifting cylinder 832... The cooperation of the first lifting cylinder 832 and the second lifting cylinder 833 precisely controls the vertical movement height of the transfer robotic arm 9, facilitating the grabbing or placement of the tank at different heights. The first lifting cylinder 832 and the second lifting cylinder 833 are coaxially arranged and their output ends abut against each other, providing a redundant structure that can withstand large loads and provide stable lifting power, ensuring that the transfer robotic arm 9 remains stable during lifting. The transfer robotic arm 9 cooperates with the load-bearing beam 823 that is slidably installed in the crossbeam 82, enabling the transfer robotic arm 9 to both lift vertically and move horizontally, thereby accurately transferring the tank from the loading position to the welding station 3. After welding, the tank is transferred from the welding station 3 to the unloading position, improving the automation level of the welding process and thus improving welding efficiency.

[0042] The specific working principle of this utility model is as follows: During welding, the transfer robotic arm 9 of the transfer assembly 8 is controlled to move vertically by driving the lifting assembly 83. The transfer robotic arm 9 controls the gripper 91 to grab the tank at the designated loading position. The transfer motor 822 drives the bearing beam 823 to move along the crossbeam 82, horizontally transporting the tank to directly above the welding station 3. The transfer robotic arm 9 descends and places the tank stably on the welding station 3. The tank is supported by the auxiliary support assembly 4. The first clamping cylinder 22 and the second clamping cylinder 52 respectively drive the first movable plate 23 and the second movable plate 53 to move towards each other. The first centering cage 24 and the second centering cage 56 approach the two ends of the tank and abut against the arc surface of the tank, realizing the axial positioning and radial centering of the tank. The first drive motor 63 drives the first slide 62 along the work... The worktable 1 moves along its length to adjust the lateral position of the welding torch 67. The second drive motor 65 drives the front panel 66 to rise and fall, adjusting the height of the welding torch 67 so that it is aligned with the tank joint. The first rotary drive motor 25 drives the first centering cage 24 to rotate via the rotary disc, thereby driving the tank to rotate and ensuring that the joint rotates evenly, thus ensuring the continuity and uniformity of the circumferential weld. Under the control of the welding system 7, the welding torch 67 welds along the tank joint, thereby sealing and connecting the loosely joined sections of the tank into a single unit. The welding assembly 6 can be flexibly adjusted to ensure that the welding torch 67 is always aligned with the joint. After welding is completed, the transfer robotic arm 9 moves again, and the gripper 91 picks up the welded tank and transfers it from the welding station 3 to the unloading position. The entire welding process is highly automated and efficient.

[0043] The above-described specific embodiments are merely preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. An automatic circumferential welder for tank bodies, comprising a workbench (1), characterized in that: The top center of the workbench (1) is provided with a welding station (3). The workbench (1) is equipped with a first centering component (2) and a second centering component (5) at both ends of the welding station (3) along its length. The first centering component (2) and the second centering component (5) are slidably connected to the workbench (1). A welding component (6) that can slide to the welding station (3) is installed above the second centering component (5). A transfer component (8) is installed directly above the welding station (3). The transfer component (8) includes a support frame (81) fixedly installed above the welding station (3). A crossbeam (82) that is perpendicular to the length of the workbench (1) and extends outward at one end is installed at the top of the support frame (81). A transfer feeding device is slidably connected in the crossbeam (82).

2. The automatic circumferential welder for tanks according to claim 1, characterized in that: The first centering component (2) includes a first fixed plate (21) fixedly connected to the end face of the workbench (1). A first movable plate (23) is slidably connected to the first fixed plate (21) via a slide table. A first clamping cylinder (22) is installed on one end of the first fixed plate (21) away from the welding station (3). The output end of the first clamping cylinder (22) is drivenly connected to the first movable plate (23). A first centering cage (24) perpendicular to the end face of the workbench (1) is installed on the other end of the first movable plate (23).

3. The automatic circumferential welder for tanks according to claim 2, characterized in that: A rotating disk is provided between the first centering cage (24) and the first movable plate (23), and the rotating disk is fixedly connected to the first centering cage (24). A first rotary drive motor (25) is also installed on the end of the first movable plate (23) away from the first centering cage (24), and the first rotary drive motor (25) is connected to the rotating disk in a transmission manner.

4. The automatic circumferential welder for tanks according to claim 3, characterized in that: The second centering component (5) includes a second fixed plate (51) fixed on the side end face of the worktable (1) away from the first centering component (2). The second fixed plate (51) is slidably connected to a second movable plate (53) via a slide table. A second clamping cylinder (52) is installed on one end of the second fixed plate (51) near the edge of the worktable (1). The output end of the second clamping cylinder (52) is driven and connected to the second movable plate (53). The other end of the second movable plate is equipped with a second centering cage (56) coaxial with the first centering cage (24).

5. The automatic circumferential welder for tanks according to claim 4, characterized in that: The second centering cage (56) is rotatably connected to the second movable plate (53). A push cylinder (54) is installed on the end of the second movable plate (53) away from the second centering cage (56). The output end of the push cylinder (54) can move through the second movable plate (53) and extend into the second centering cage (56).

6. The automatic circumferential welder for tanks according to claim 2, characterized in that: The workbench (1) is located directly below the welding station (3) and is fixedly installed with an auxiliary support assembly (4). The auxiliary support assembly (4) includes two support mechanisms installed opposite to each other at the bottom of the welding station (3) of the workbench (1). The support mechanism includes a base (41) and is fixedly connected to the workbench (1). The base (41) is slidably connected to a support plate (42) in the vertical direction. The top of the support plate (42) is fixedly installed with a freely rotatable auxiliary roller group (43). The auxiliary roller group (43) is coaxial with the length direction of the workbench (1). A support cylinder (44) is installed inside the base (41). The output end of the support cylinder (44) is drivenly connected to the support plate (42).

7. The automatic circumferential welder for tanks according to claim 1, characterized in that: The welding assembly (6) includes a first fixed base (61) with one end fixedly connected to the end face of the worktable (1). The other end of the first fixed base (61) is located above the second centering assembly (5) and a first slide (62) is slidably mounted on the end face along the length direction of the worktable (1). A first drive motor (63) is installed on the end of the first slide (62) away from the welding station (3) to drive the first slide (62) to slide relative to the first fixed base (61). A second slide (64) is slidably mounted on the front end of the first slide (62) away from the first drive motor (63). A second drive motor (65) is provided at the top of the second slide (64). A front panel (66) is slidably mounted on the end face of the second slide (64) relative to the welding station (3). The front panel (66) is drivenly connected to the second drive motor (65). A welding gun (67) is fixedly mounted on the front panel (66). The welding gun (67) is connected to the welding system (7).

8. The automatic circumferential welder for tanks according to claim 1, characterized in that: A load-bearing beam (823) is slidably connected to the top surface of the crossbeam (82) via a guide rail slider. A rack (821) is fixed on one end of the crossbeam (82) along its length. A transplanting motor (822) is fixedly installed on the load-bearing beam (823). The output end of the transplanting motor (822) is equipped with an active tooth that meshes with the rack (821).

9. An automatic circumferential welder for tank bodies according to claim 8, characterized in that: The transplanting and feeding device includes a drive lifting assembly (83) installed on the bearing beam (823), and a transplanting robotic arm (9) is fixedly connected to one end of the bottom of the drive lifting assembly (83).

10. An automatic circumferential welder for tank bodies according to claim 9, characterized in that: The drive lifting assembly (83) includes a second fixed seat (831) fixedly connected to the bearing beam (823). The second fixed seat (831) is provided with a first lifting cylinder (832) and a second lifting cylinder (833) coaxially along the vertical direction. The output ends of the first lifting cylinder (832) and the second lifting cylinder (833) are arranged opposite to each other and abut against each other. The second lifting cylinder (833) is located directly above the first lifting cylinder (832) and a connecting plate (834) is installed at one end of its bottom. The output end of the second lifting cylinder (833) passes through the connecting plate (834) and is connected to and abuts against the output end of the first lifting cylinder (832). The other end of the connecting plate (834) is connected to a transplanting robot arm (9). The bottom of the transplanting robot arm (9) is equipped with a gripper (91).

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