Multi-angle positioning welding device for oil tank

Abstract

The invention relates to the field of oil tank welding, in particular to a multi-angle positioning welding device for an oil tank. Comprising a welding jar and a welding hand arranged beside the welding jar, a rotating disc is rotationally arranged in the middle of the welding jar, and pneumatic clamps used for positioning an oil tank body are symmetrically arranged at the upper end of the rotating disc; two purlin plates are arranged on the side, away from the welding hand, of the rotary table, follow-up positioning mechanisms used for positioning the oil tank partition plate are arranged on the sides, close to each other, of the two purlin plates, and clamping mechanisms used for assembling and disassembling the follow-up positioning mechanisms and the ends of the tank body are arranged on the sides, close to the rotary table, of the purlin plates; the follow-up positioning mechanism comprises a supporting plate provided with an electromagnet and two clamping jaws, and the clamping mechanism comprises a loading and unloading plate with a clamping air cylinder. While the welding precision and the welding seam quality are guaranteed, the continuity of welding operation and the production efficiency are improved, the problem that an existing oil tank welding tool cannot give consideration to multi-angle welding of a tank body and positioning precision keeping of a partition plate is solved, and multi-angle positioning welding of the partition plate and the tank body is achieved.

Description

Technical Field

[0001] This invention relates to the field of fuel tank welding, specifically to a multi-angle positioning welding device for fuel tanks. Background Technology

[0002] As a core component of the fuel supply system for power equipment such as automobiles, construction machinery, and agricultural equipment, the fuel tank's sealing performance, structural coaxiality, and dimensional accuracy directly determine the equipment's operational reliability and service life. Among these processes, the splicing and welding of the tank body and the circumferential sealing welding between the tank body and the end baffles are two core steps in the fuel tank production process, demanding extremely high welding positioning accuracy and operational continuity. Currently, the industry's research and optimization of fuel tank welding equipment generally focuses on the clamping and positioning stage of the tank body, concentrating on solving the rigid fixation problem during the tank body welding process to ensure the forming quality of the weld seam. However, as downstream industries continue to increase their requirements for fuel tank production efficiency, welding consistency, and finished product qualification rates, the technical shortcomings and application limitations of existing welding equipment are becoming increasingly prominent.

[0003] Existing fuel tank welding equipment neglects the precise positioning design of the fuel tank baffles, focusing only on the positioning and clamping of the fuel tank body. In actual welding operations, existing equipment can only complete the clamping, positioning, and welding of the fuel tank body. After the tank body welding is completed, it is impossible to complete the synchronous positioning and welding of the baffles at the same station. The fuel tank must be transferred to a separate dedicated baffle welding station before the positioning, clamping, and welding of the baffles can be carried out. At the baffle welding station, existing technologies often use bidirectional external clamping or inserting positioning anchor rods into the fuel tank to achieve temporary positioning of the baffles. These positioning methods are not only cumbersome and time-consuming, but also make it difficult to ensure the coaxiality of the baffles and the tank body. This easily leads to problems such as baffle misalignment and uneven welding gaps during welding, resulting in poor weld formation and fuel tank leakage.

[0004] In addition, the existing workstation-separated operation mode completely disrupts the continuity of the tank body welding and partition welding processes, making continuous welding of the tank body and partitions impossible. The transfer of the tank body between multiple workstations and the repeated clamping not only significantly lengthens the product production cycle and reduces overall production efficiency, but also generates cumulative dimensional and positional errors due to multiple switching of clamping references, severely affecting the overall dimensional and positional accuracy and welding consistency of the tank. Furthermore, the positioning method of inserting positioning anchors into the tank is prone to jamming between the anchors and the workpiece after welding, leading to difficulties in demolding and further increasing operational difficulty and production costs. Therefore, the industry needs a tank welding technology solution that can simultaneously achieve coordinated positioning of the tank body and partitions and realize continuous welding of the tank body and partitions, in order to solve the many pain points of the existing technology. Summary of the Invention

[0005] Therefore, it is necessary to provide a multi-angle positioning welding device for oil tanks to address the problems of existing technologies.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] A multi-angle positioning welding device for fuel tanks includes a welding pot and a welding hand disposed beside the welding pot, and further includes:

[0008] A turntable is rotatably installed in the middle of the welding pot. Pneumatic clamps for positioning the oil tank are symmetrically installed on the upper end of the turntable. Two trusses are installed on the side of the turntable away from the welding hand. A follow-up positioning mechanism that can be detached from the oil tank partition is installed on the side of the two trusses close to each other. A locking mechanism for loading and unloading the follow-up positioning mechanism is installed on the side of the two trusses close to the turntable.

[0009] The follow-up positioning mechanism includes a support plate that can be detachably connected to the end of the workpiece. An electromagnet is provided in the middle of the support plate to attract the oil tank partition. Claws are symmetrically arranged on both sides of the support plate to grip the sealing edge of the oil tank end.

[0010] The clamping mechanism includes a loading and unloading plate that is slidably disposed on the side of the truss and a clamping cylinder that is fixedly connected to the loading and unloading plate. The two clamping cylinders respectively drive the oil tank partition to move by clamping the two jaws.

[0011] Furthermore, a lifting mechanism is provided at the lower end of the turntable. The fixed end of the lifting mechanism is fixedly connected to the welding tank, and the output end is fixedly connected to the fixed end of the turntable.

[0012] Furthermore, a heat insulation cover is fixedly fitted onto the outside of the support plate;

[0013] A dual-axis motor, fixed to the support plate, is installed on one side where the two grippers are close together. The output end of the dual-axis motor is connected to the gripper drive. A power supply, fixed to the heat insulation cover, is installed next to the dual-axis motor. The power supply is electrically connected to the dual-axis motor, and the input end of the electromagnet is electrically connected to the power supply.

[0014] Furthermore, the gripper includes a gripper base that is adjustablely connected to the heat insulation cover. One end of the gripper base extending out of the heat insulation cover is formed with a fixed gripper head. A guide rail is fixedly connected to the middle of the gripper base, and a movable gripper head is slidably connected to the guide rail.

[0015] A screw is rotatably mounted on the side of the guide rail away from the claw seat. One end of the screw is keyed to the output end of the dual-axis motor, and the other end is threaded to the moving claw head.

[0016] Furthermore, anti-slip pads are fixedly connected to the sides of the moving jaw and the fixed jaw that are close to each other.

[0017] Furthermore, two adjusting plates are provided on the side of the claw seat away from the guide rail. The adjusting plates are fixedly connected to the side wall of the heat conduction cover, and a strip-shaped perforation is provided in the middle of the adjusting plate.

[0018] Each adjustment plate is equipped with a locking pin, which passes through a strip-shaped perforation and is fixedly screwed onto the claw seat.

[0019] Furthermore, the movable end of the clamping cylinder near the heat shield is a short claw, and the movable end away from the heat shield is a long claw.

[0020] The side of the claw base away from the guide rail is provided with a shifting groove that matches the short claw, and the end of the claw base away from the dual-axis motor is provided with a positioning groove that matches the long claw.

[0021] A plug is fixed to the end of the long claw. When the clamping cylinder is started, the short claw extends into the shifting groove, and the long claw drives the plug to extend into the positioning groove.

[0022] Furthermore, a sealing ring is fitted around the outside of the plug, and when the plug is inserted into the positioning groove, the sealing ring is interference-fitted with the inner wall of the positioning groove.

[0023] Furthermore, the locking mechanism also includes a guide plate disposed next to the loading and unloading plate. The loading and unloading plate is slidably connected to the guide plate. A pen-shaped cylinder is disposed vertically at the upper end of the guide plate. The fixed end of the pen-shaped cylinder is fixedly connected to the guide plate, and the output end is fixedly connected to the loading and unloading plate.

[0024] Furthermore, the locking mechanism also includes a thin cylinder disposed on the side of the guide plate near the truss. The thin cylinder is disposed horizontally, with its fixed end fixedly connected to the truss and its output end fixedly connected to the guide plate.

[0025] The beneficial effects of this invention compared to the prior art are:

[0026] Firstly, this device addresses the shortcomings of existing welding devices that focus only on tank positioning while neglecting precise partition positioning. Through the coordinated design of a turntable integrating pneumatic clamps and a follow-up positioning mechanism, it achieves continuous positioning and clamping of the tank body and partitions at the same workstation. This eliminates the need to transfer workpieces to a dedicated partition welding station, saving the cumbersome process of multiple workstation transfers. Relying on the dual positioning structure of electromagnet adsorption and claw clamping of the follow-up positioning mechanism, it can accurately ensure the coaxiality of the partitions and tank body, effectively avoiding problems such as partition misalignment and uneven welding gaps during welding. This reduces quality problems such as poor weld formation and tank leakage from the root, significantly improving the welding accuracy and finished product qualification rate of the tank.

[0027] Secondly, this device addresses the pain points of existing technologies, such as workstation separation and poor process continuity. Through the cooperation of a rotatable turntable and a locking mechanism and a follow-up positioning mechanism with symmetrically arranged double trusses, it achieves continuous operation of the entire process of box welding and partition welding. It eliminates the need for repeated clamping of workpieces, ensuring the uniformity of welding benchmarks throughout the process, eliminating the cumulative form and position errors caused by multiple workstation switching, and enabling staggered operation of welding at one end and clamping at the other end, which significantly shortens the production cycle. Moreover, it eliminates the need to extend positioning anchor rods into the tank, avoiding the problem of difficult demolding. While improving welding consistency, it significantly improves production efficiency and adapts to the needs of large-scale continuous production. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0029] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0030] Figure 3 This is a three-dimensional structural diagram of the two trusses in the embodiment;

[0031] Figure 4 yes Figure 3 Enlarged view of the structure at point B in the middle;

[0032] Figure 5 This is a three-dimensional structural diagram of the truss and engaging mechanism in the embodiment;

[0033] Figure 6 yes Figure 5 Enlarged view of the structure at point C;

[0034] Figure 7 This is a three-dimensional structural diagram of the heat insulation cover and the two grippers in the embodiment;

[0035] Figure 8 This is an exploded three-dimensional structural diagram of the heat insulation cover and the two grippers in the embodiment;

[0036] Figure 9 This is a three-dimensional structural diagram of the gripper in the embodiment.

[0037] The numbers on the map are:

[0038] 1. Welding hand; 2. Welding jar; 3. Turntable; 4. Pneumatic clamp; 5. Lifting mechanism; 6. Truss plate; 7. Clamping mechanism; 8. Thin cylinder; 9. Guide plate; 10. Pen-shaped cylinder; 11. Loading and unloading plate; 12. Clamping cylinder; 13. Long claw; 14. Plug; 15. Sealing ring; 16. Short claw; 17. Follow-up positioning mechanism; 18. Support plate; 19. Electromagnet; 20. Heat insulation cover; 21. Dual-axis motor; 22. Power supply; 23. Gripper; 24. Claw seat; 25. Fixed claw head; 26. Moving claw head; 27. Anti-slip pad; 28. Shifting groove; 29. ​​Positioning groove; 30. Guide rail; 31. Screw; 32. Locking pin; 33. Adjusting plate; 34. Strip perforation. Detailed Implementation

[0039] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0040] refer to Figures 1 to 9 A multi-angle positioning welding device for fuel tanks includes a welding jar 2 and a welding hand 1 disposed beside the welding jar 2, and further includes:

[0041] A turntable 3 is rotatably arranged in the middle of the welding pot 2. A pneumatic clamp 4 for positioning the oil tank body is symmetrically arranged on the upper end of the turntable 3. Two trusses 6 are arranged on the side of the turntable 3 away from the welding hand 1. A follow-up positioning mechanism 17 that can be detached from the oil tank partition is arranged on the side of the two trusses 6 that are close to each other. A locking mechanism 7 for loading and unloading the follow-up positioning mechanism 17 is arranged on the side of the two trusses 6 that are close to the turntable 3.

[0042] The follow-up positioning mechanism 17 includes a support plate 18 that can be detachably connected to the end of the workpiece. An electromagnet 19 is provided in the middle of the support plate 18 to attract the oil tank partition. Claws 23 are symmetrically arranged on both sides of the support plate 18 to clamp the end sealing edge of the oil tank.

[0043] The clamping mechanism 7 includes a loading and unloading plate 11 slidably disposed on the side of the truss 6 and a clamping cylinder 12 fixedly connected to the loading and unloading plate 11. The two clamping cylinders 12 respectively drive the oil tank partition to move by clamping the two jaws 23.

[0044] Before welding begins, the operator places the semi-finished tank body, with both ends connected, on the upper position of turntable 3. The symmetrically arranged pneumatic clamps 4 then clamp the tank body from both sides, ensuring that the tank's rotation center is coaxial with the turntable 3's rotation center, establishing a unified precision benchmark for multi-angle welding throughout the process. Subsequently, turntable 3 begins rotation, causing the tank body to rotate synchronously. The welding hand 1, working in conjunction with turntable 3, switches angles in real time to complete multi-angle full welding of the tank body's splicing welds. This achieves basic linkage between turntable 3's rotation and the welding hand 1's actions, resulting in the finished tank body with both ends connected.

[0045] After the cylinder body welding is completed, the turntable 3 drives the box to rotate to the partition assembly station. At this time, the operator uses the electromagnet 19 in the middle of the support plate 18 of the follow-up positioning mechanism 17 to complete the precise centering and adsorption positioning of the partition and the support plate 18. Then, the operator installs the follow-up positioning mechanism 17 to the locking mechanism 7 station on the side of the truss plate 6, and starts the clamping cylinder 12 to clamp the tail of the jaw 23 of the follow-up positioning mechanism 17, completing the rigid connection between the locking mechanism 7 and the follow-up positioning mechanism 17. Then, the loading and unloading plate 11 of the locking mechanism 7 drives the follow-up positioning mechanism 17 to move horizontally towards the end of the box, pushing the partition plate to accurately extend into the preset work position at the end of the box. The gripper 23 closes and clamps the end seal of the box, forming a dual positioning of the electromagnet 19 adsorbing the partition plate and the gripper 23 clamping and locking the box. This makes the follow-up positioning mechanism 17, the partition plate, the box and the turntable 3 form a rigid whole that rotates synchronously, realizing the positioning accuracy is locked throughout when the welding angle is switched arbitrarily, and providing support for the subsequent multi-angle positioning welding operation of the device.

[0046] After positioning, turntable 3 rotates the housing to the welding station, proceeding to the next welding operation. At this point, welding hand 1 prioritizes completing the full welding of the two unobstructed welds perpendicular to the clamping direction of gripper 23. During this process, turntable 3 can freely rotate and switch welding angles as needed, adapting to various welding requirements. After the weld quality inspection is passed, the locking mechanism 7 drives the follow-up positioning mechanism 17 to unlock and retract, removing welding interference to the housing. Turntable 3 then rotates again to switch angles, cooperating with welding hand 1 to complete the full-angle welding of the remaining two welds, completing the full circumference welding of the single-end partition. It should be noted that in actual operation, the number of follow-up positioning mechanisms 17 is set to two, allowing for staggered operations where welding is performed at one end while the other end is clamped. This overlaps the partition positioning auxiliary time with the main welding operation time, and, in conjunction with the rapid rotation and switching of the turntable 3, forms a high-precision and high-efficiency multi-angle positioning welding process.

[0047] In order to enable the turntable 3 to move along its axial direction, thereby raising or lowering the workpiece at the upper end of the turntable 3, the following features are specifically provided:

[0048] like Figure 2As shown, a lifting mechanism 5 is provided at the lower end of the turntable 3. The fixed end of the lifting mechanism 5 is fixedly connected to the welding tank 2, and the output end is fixedly connected to the fixed end of the turntable 3. During the welding operation, the lifting mechanism 5 can drive the turntable 3 to make vertical lifting and lowering displacements along its axis according to the height specifications of the oil tank workpiece and the working height requirements of the welder 1, accurately adjusting the welding working height of the workpiece to adapt to the welding needs of oil tanks of different sizes and specifications. At the same time, the turntable 3 can be raised during the workpiece clamping stage to facilitate the operator to place and align the workpiece, and adjust the height to match the optimal welding working range of the welder 1 during the welding stage. Moreover, the output end of the lifting mechanism 5 is fixedly connected to the rotation fixed end of the turntable 3, and the lifting action does not affect the normal rotation function of the turntable 3, ensuring the accuracy and stability of multi-angle welding.

[0049] In order to provide a stable power source for the electromagnet 19 and the gripper 23, the following features are specifically provided:

[0050] like Figure 7 and Figure 8 As shown, a heat insulation cover 20 is fixedly fitted on the outside of the support plate 18;

[0051] A dual-axis motor 21 is fixedly connected to the support plate 18 on one side of the two grippers 23 that are close to each other. The output end of the dual-axis motor 21 is connected to the grippers 23 for transmission. A power supply 22 is fixedly connected to the heat insulation cover 20 on the side of the dual-axis motor 21. The power supply 22 is electrically connected to the dual-axis motor 21. The input end of the electromagnet 19 is electrically connected to the power supply 22.

[0052] During operation, the heat shield 20 isolates the high-temperature radiation and welding slag spatter generated during welding, effectively protecting the internal dual-axis motor 21 and power supply 22 and preventing damage to components due to high temperatures. The built-in power supply 22 provides independent and stable power to the electromagnet 19 and the dual-axis motor 21, eliminating the need for external power lines and avoiding problems such as cable entanglement and pulling during the rotation of the turntable 3, thus ensuring smooth operation of the device at all angles.

[0053] The dual-axis motor 21 can synchronously drive the two grippers 23 to complete the opening and closing action, ensuring the synchronicity of the gripping action and the uniformity of the gripping force of the two grippers 23. During operation, the electromagnet 19 is first powered by the power supply 22 to complete the adsorption and positioning of the partition, and then the dual-axis motor 21 is started to drive the grippers 23 to complete the gripping action, realizing the coordinated linkage of the positioning action.

[0054] To supplement the specific structure of the gripper 23, the following features are also provided:

[0055] like Figure 7 , Figure 8 and Figure 9As shown, the gripper 23 includes a gripper seat 24 that is adjustablely connected to the heat insulation cover 20. One end of the gripper seat 24 extending out of the heat insulation cover 20 is formed with a fixed gripper head 25. A guide rail 30 is fixedly connected to the middle of the gripper seat 24, and a movable gripper head 26 is slidably connected to the guide rail 30.

[0056] A screw 31 is rotatably mounted on the side of the guide rail 30 away from the claw seat 24. One end of the screw 31 is keyed to the output end of the dual-axis motor 21, and the other end is threaded to the moving claw head 26.

[0057] When the dual-axis motor 21 starts, it drives the screw 31 to rotate synchronously. The screw 31 drives the moving jaw 26 to move precisely in a straight line along the guide rail 30 through threaded transmission. It cooperates with the fixed jaw 25 to clamp and release the end sealing edge of the box. The screw 31 transmission has a self-locking characteristic, which can maintain a constant clamping force after clamping. It will not loosen due to the rotation of the turntable 3 or welding vibration, and ensures the stability of clamping and positioning throughout the process.

[0058] To prevent friction when the fixed jaw 25 and the movable jaw 26 clamp the end of the housing, the following features are specifically provided:

[0059] like Figure 9 As shown, anti-slip pads 27 are fixedly connected to the adjacent sides of the moving jaw head 26 and the fixed jaw head 25. When the moving jaw head 26 and the fixed jaw head 25 clamp the end sealing edge of the box, the anti-slip pads 27 directly and tightly adhere to the sealing edge surface, significantly increasing the static friction of the contact surface and preventing relative sliding between the jaws 23 and the box during clamping, further improving the reliability of positioning. At the same time, the anti-slip pads 27 can isolate the metal body of the jaws 23 from direct contact with the box base material, preventing scratches on the plating or base material of the box surface during clamping, ensuring the appearance quality of the workpiece, and avoiding the problem of reduced anti-corrosion performance due to surface damage.

[0060] To enable adjustment of the relative position between the two fixed claw heads 25, facilitating matching with oil tank ends of different specifications, the following features are specifically provided:

[0061] like Figure 6 and Figure 9 As shown, two adjusting plates 33 are provided on the side of the claw seat 24 away from the guide rail 30. The adjusting plates 33 are fixedly connected to the side wall of the heat conduction cover. A strip-shaped perforation 34 is provided in the middle of the adjusting plate 33.

[0062] Each adjusting plate 33 is equipped with a locking pin 32, which passes through a strip-shaped perforation 34 and is fixedly screwed onto the jaw seat 24. For oil tank workpieces of different widths and sizes, the operator can loosen the locking pin 32 to allow the jaw seat 24 to be horizontally adjusted along the strip-shaped perforation 34 of the adjusting plate 33, flexibly adjusting the relative distance between the two jaws 23 to accommodate oil tank end seals of different sizes. After adjusting to the target position, the operator tightens the locking pin 32 to rigidly fix the jaw seat 24 to the adjusting plate 33, ensuring that the position does not shift during clamping. This achieves compatibility and adaptability of the device for oil tanks of different sizes, improving the device's versatility and applicability.

[0063] To achieve stable clamping between the clamping cylinder 12 and the gripper 23, the following features are specifically provided:

[0064] like Figure 4 , Figure 5 and Figure 9 As shown, the movable end of the clamping cylinder 12 near the heat shield 20 is a short claw 16, and the movable end away from the heat shield 20 is a long claw 13.

[0065] The claw base 24 has a shifting groove 28 that matches the short claw 16 on the side away from the guide rail 30, and a positioning groove 29 that matches the long claw 13 on the end away from the dual-axis motor 21.

[0066] The end of the long claw 13 is fixedly connected to the plug 14. When the clamping cylinder 12 is started, the short claw 16 extends into the shifting groove 28, and the long claw 13 drives the plug 14 to extend into the positioning groove 29.

[0067] When the locking mechanism 7 and the follow-up positioning mechanism 17 are engaged, the clamping cylinder 12 is activated. The short claw 16 first extends into the shifting groove 28 of the claw seat 24 to complete the pre-positioning and limiting in the horizontal direction. Then, the long claw 13 drives the plug 14 to precisely extend into the positioning groove 29, completing the dual precise positioning in the axial and radial directions. The multi-point engagement structure of the long claw 13 and the short claw 16 can achieve a gapless rigid connection between the clamping cylinder 12 and the clamping claw 23, ensuring the accuracy of power transmission during horizontal translation, avoiding coaxiality deviation when the partition and the box are docked, and ensuring positioning accuracy.

[0068] To achieve an interference fit between the plug 14 and the positioning groove 29, the following features are specifically designed:

[0069] like Figure 4 and Figure 5As shown, a sealing ring 15 is fitted around the outside of the plug 14. When the plug 14 is inserted into the positioning groove 29, the sealing ring 15 is press-fitted with the inner wall of the positioning groove 29. When the plug 14 is inserted into the positioning groove 29, the sealing ring 15 on the outside of the plug 14 is press-fitted with the inner wall of the positioning groove 29, completely eliminating the fit gap between the plug 14 and the positioning groove 29, and further improving the rigidity and stability of the clamping connection.

[0070] To achieve stable vertical displacement of the loading / unloading plate 11, the following features are specifically designed:

[0071] like Figure 1 , Figure 3 and Figure 5 As shown, the locking mechanism 7 also includes a guide plate 9 disposed on the side of the loading and unloading plate 11. The loading and unloading plate 11 is slidably connected to the guide plate 9. A pen-shaped cylinder 10 is disposed vertically on the upper end of the guide plate 9. The fixed end of the pen-shaped cylinder 10 is fixedly connected to the guide plate 9, and the output end is fixedly connected to the loading and unloading plate 11.

[0072] Before and during operation, for oil tank workpieces of different heights and specifications, the pen-shaped cylinder 10 can drive the loading and unloading plate 11 to make precise vertical linear displacement along the guide plate 9, flexibly adjusting the vertical height of the clamping cylinder 12 to ensure that the output end of the clamping cylinder 12 and the docking position of the gripper 23 are precisely aligned, thus ensuring docking accuracy. At the same time, the height of the loading and unloading plate 11 can be adjusted during welding to avoid motion interference between the clamping mechanism 7, the turntable 3, and the workpiece when the turntable 3 rotates, ensuring the smooth operation of the entire process.

[0073] To achieve stable horizontal displacement of the loading / unloading plate 11, the following features are specifically designed:

[0074] like Figure 1 , Figure 3 and Figure 5 As shown, the locking mechanism 7 also includes a thin cylinder 8 disposed on the side of the guide plate 9 near the truss 6. The thin cylinder 8 is disposed in a horizontal state, with its fixed end fixedly connected to the truss 6 and its output end fixedly connected to the guide plate 9.

[0075] After the clamping cylinder 12 and the gripper 23 are precisely aligned, the thin cylinder 8 is activated, pushing the guide plate 9 smoothly in the horizontal direction. This, in turn, drives the follow-up positioning mechanism 17 to precisely horizontally translate towards the end of the housing via the loading / unloading plate 11 and the clamping cylinder 12, achieving coaxial alignment between the partition and the end of the housing. The thin cylinder 8 can precisely control the translation stroke, ensuring that the axial position of the partition extending into the housing meets the welding process requirements. Simultaneously, the horizontal drive ensures that the coaxiality of the partition and the housing remains constant throughout the translation process, guaranteeing welding positioning accuracy.

[0076] Before operation, the operator first pre-adjusts the device according to the specifications and dimensions of the oil tank to be processed: at this time, the operator first loosens the locking pin 32 and adjusts the position of the claw seat 24 on the adjusting plate 33 to match the width of the oil tank end, adjusts the initial height of the turntable 3 through the lifting mechanism 5 to match the operator's clamping requirements and the working area of ​​the welding hand 1, and adjusts the vertical height of the loading and unloading plate 11 through the pen-shaped cylinder 10 to make the docking position of the clamping cylinder 12 and the claw 23 accurately correspond.

[0077] At the start of the welding operation, the operator places the semi-finished tank body, with both ends connected, on the upper position of turntable 3. The pneumatic clamp 4 is then activated to simultaneously clamp the tank body from both sides, ensuring that the tank body's rotation center is coaxial with the turntable 3's rotation center, establishing a unified precision benchmark for the entire process. Subsequently, turntable 3 begins rotation, causing the tank body to rotate synchronously. The welding hand 1 on the side coordinates with the turntable 3, switching angles in real time to complete multi-angle full welding of the tank body's splicing weld.

[0078] After the cylinder body welding is completed, the turntable 3 drives the end of the box to rotate to the partition assembly station. The operator supplies power to the electromagnet 19 in advance through the power supply 22 to complete the precise centering and adsorption positioning of the partition and the support plate 18. Then, the follow-up positioning mechanism 17 is placed in the corresponding position of the locking mechanism 7. Subsequently, the clamping cylinder 12 is started, the short claw 16 extends into the displacement groove 28, and the long claw 13 drives the plug 14 to extend into the positioning groove 29, completing the rigid connection between the locking mechanism 7 and the follow-up positioning mechanism 17. Then, the thin cylinder 8 is started, driving the follow-up positioning mechanism 17 to move smoothly to the end of the box, pushing the partition plate to accurately extend into the preset welding position at the end of the box. Then, the dual-axis motor 21 is started, driving the screw 31 to rotate, driving the moving claw head 26 to move along the guide rail 30, cooperating with the fixed claw head 25 to clamp the end sealing edge of the box, forming a double positioning of the electromagnet 19 adsorbing the fixed partition plate and the gripper 23 clamping and locking the box, so that the follow-up positioning mechanism 17, the partition plate, the box and the turntable 3 form a rigid whole that rotates synchronously.

[0079] After the inner wall of the partition and the end of the box is positioned, the turntable 3 drives the box to rotate to the welding station. The welding hand 1 first completes the full welding of the two unobstructed welds perpendicular to the clamping direction of the gripper 23. During the process, the turntable 3 can freely rotate and switch the welding angle as needed, and the lifting mechanism 5 can adjust the height synchronously to adapt to the welding requirements. After the weld quality inspection is qualified, the dual-axis motor 21 drives the gripper 23 to release, the electromagnet 19 is de-energized, the locking mechanism 7 drives the follow-up positioning mechanism 17 to retract and unlock, the turntable 3 rotates again to switch the angle, and cooperates with the welding hand 1 to complete the full-angle welding of the remaining two welds, completing the full circumference welding of the single-end partition.

[0080] In actual operation, the number of follow-up positioning mechanisms 17 is set to two (i.e., corresponding to the two partitions at the ends of the box). At this time, the device can achieve staggered operation of welding at one end and clamping at the other end through two sets of symmetrically arranged trusses 6 and clamping mechanisms 7, thus overlapping the partition positioning auxiliary time with the main welding operation time. When welding the partitions and the ends of the box, the heat insulation cover 20 protects the internal components from high temperature damage throughout the process, and the anti-slip pad 27 ensures clamping stability, realizing the coordinated positioning and continuous welding of the box and the partitions, forming a high-precision and high-efficiency multi-angle positioning welding process.

[0081] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A multi-angle positioning welding device for an oil tank, comprising a welding jar (2) and a welding hand (1) disposed beside the welding jar (2), characterized in that, Also includes: A turntable (3) is rotatably arranged in the middle of the welding pot (2). A pneumatic clamp (4) for positioning the oil tank body is symmetrically arranged on the upper end of the turntable (3). Two trusses (6) are arranged on the side of the turntable (3) away from the welding hand (1). A follow-up positioning mechanism (17) that can be detached from the oil tank partition is arranged on the side of the two trusses (6) close to each other. A locking mechanism (7) for loading and unloading the follow-up positioning mechanism (17) is arranged on the side of the two trusses (6) close to the turntable (3). The follow-up positioning mechanism (17) includes a support plate (18) that can be detachably connected to the end of the workpiece. An electromagnet (19) for attracting the oil tank partition is provided in the middle of the support plate (18). Claws (23) for clamping the end seal of the oil tank are symmetrically provided on both sides of the support plate (18). The clamping mechanism (7) includes a loading and unloading plate (11) that is slidably disposed on the side of the truss (6) and a clamping cylinder (12) that is fixedly connected to the loading and unloading plate (11). The two clamping cylinders (12) respectively drive the oil tank partition to move by clamping the two jaws (23).

2. The multi-angle positioning welding device for an oil tank according to claim 1, characterized in that, A lifting mechanism (5) is provided at the lower end of the turntable (3). The fixed end of the lifting mechanism (5) is fixedly connected to the welding pot (2), and the output end is fixedly connected to the fixed end of the turntable (3).

3. The multi-angle positioning welding device for an oil tank according to claim 1, characterized in that, The support plate (18) is fixedly fitted with a heat insulation cover (20); A dual-axis motor (21) is fixedly connected to the support plate (18) on one side of the two grippers (23) that are close to each other. The output end of the dual-axis motor (21) is connected to the grippers (23) for transmission. A power supply (22) is fixedly connected to the heat shield (20) on the side of the dual-axis motor (21). The power supply (22) is electrically connected to the dual-axis motor (21). The input end of the electromagnet (19) is electrically connected to the power supply (22).

4. The multi-angle positioning welding device for an oil tank according to claim 3, characterized in that, The gripper (23) includes a gripper seat (24) that is adjustablely connected to the heat shield (20). A fixed gripper head (25) is formed at one end of the gripper seat (24) that extends out of the heat shield (20). A guide rail (30) is fixedly connected to the middle of the gripper seat (24). A movable gripper head (26) is slidably connected to the guide rail (30). A screw (31) is rotatably mounted on the side of the guide rail (30) away from the claw seat (24). One end of the screw (31) is keyed to the output end of the dual-axis motor (21), and the other end is threaded to the moving claw head (26).

5. The multi-angle positioning welding device for an oil tank according to claim 4, characterized in that, Anti-slip pads (27) are fixedly connected to the sides of the moving jaw (26) and the fixed jaw (25) that are close to each other.

6. The multi-angle positioning welding device for an oil tank according to claim 4, characterized in that, Two adjustment plates (33) are provided on the side of the claw base (24) away from the guide rail (30). The adjustment plates (33) are fixed to the side wall of the heat conduction cover. A strip-shaped perforation (34) is provided in the middle of the adjustment plate (33). Each adjustment plate (33) is provided with a locking pin (32) in the middle. The locking pin (32) passes through the strip-shaped through hole (34) and is fixedly screwed to the claw seat (24).

7. The multi-angle positioning welding device for an oil tank according to claim 6, characterized in that, The movable end of the clamping cylinder (12) near the heat shield (20) is a short claw (16), and the movable end away from the heat shield (20) is a long claw (13). The claw seat (24) has a shifting groove (28) matching the short claw (16) on the side away from the guide rail (30), and a positioning groove (29) matching the long claw (13) is provided at the end of the claw seat (24) away from the dual-axis motor (21). The end of the long claw (13) is fixed with a plug (14). When the clamping cylinder (12) is started, the short claw (16) extends into the shifting groove (28), and the long claw (13) drives the plug (14) to extend into the positioning groove (29).

8. The multi-angle positioning welding device for an oil tank according to claim 7, characterized in that, A sealing ring (15) is fitted on the outside of the plug (14). When the plug (14) is inserted into the positioning groove (29), the sealing ring (15) is interference-fitted with the inner wall of the positioning groove (29).

9. The multi-angle positioning welding device for an oil tank according to claim 1, characterized in that, The locking mechanism (7) also includes a guide plate (9) located next to the loading and unloading plate (11). The loading and unloading plate (11) and the guide plate (9) are slidably connected. A pen-shaped cylinder (10) is vertically mounted on the upper end of the guide plate (9). The fixed end of the pen-shaped cylinder (10) is fixedly connected to the guide plate (9), and the output end is fixedly connected to the loading and unloading plate (11).

10. A multi-angle positioning welding device for an oil tank according to claim 9, characterized in that, The locking mechanism (7) also includes a thin cylinder (8) disposed on the side of the guide plate (9) near the truss (6). The thin cylinder (8) is disposed in a horizontal state. The fixed end of the thin cylinder (8) is fixedly connected to the truss (6), and the output end is fixedly connected to the guide plate (9).

Images