Welding apparatus

Abstract

The embodiment of the present application provides a welding device, which comprises a rack, a plurality of top surface welding devices installed on the rack, each of the top surface welding devices comprising a first three-axis moving module, a first z-axis rotating mechanism and a top surface welding unit connected in sequence, the first three-axis moving module being used to drive the top surface welding unit to move along an x-axis direction, a y-axis direction and a z-axis direction, and the first z-axis rotating mechanism being used to drive the top surface welding unit to rotate around the z-axis; and a side surface welding device installed on the rack, the side surface welding device comprising a second three-axis moving module, a first double-axis rotating module and a side surface welding unit connected in sequence, the second three-axis moving module being used to drive the side surface welding unit to move along the x-axis direction, the y-axis direction and the z-axis direction, and the first double-axis rotating module being used to drive the side surface welding unit to rotate around the z-axis and an axis perpendicular to the z-axis. Thus, the welding requirements of different oil tanks on the top surface and the side surface can be met simultaneously, and the generality is relatively high.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding device. Background Technology

[0002] The fuel tank is an important component of vehicles such as automobiles that use gasoline as their power source. Fuel tanks typically require welding of components such as fuel nozzles, hose clamps, carbon canister brackets, support blocks, and isolation valve brackets to facilitate the assembly of surrounding parts and the operation of the fuel tank.

[0003] Different fuel tanks vary significantly in size, shape, and other factors, as well as the welding positions of the components. Current technology typically employs specialized equipment for welding specific fuel tanks. Each welding unit within this equipment is positioned at a designated location and angle to weld the components to the desired location on the tank. However, this specialized equipment struggles to simultaneously meet the processing needs of different fuel tanks, resulting in poor versatility and reduced processing efficiency. Furthermore, in processing scenarios where welding positions are closely spaced, the available processing space is limited. To avoid interference, each welding unit must weld sequentially, further reducing processing efficiency. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a welding device that can adapt to the processing requirements of different oil tanks and improve processing efficiency.

[0005] This invention provides a welding device, comprising: a frame; multiple top surface welding devices mounted on the frame, each top surface welding device including a first three-axis moving module, a first z-axis rotating mechanism, and a top surface welding unit connected in sequence; the first three-axis moving module driving the first z-axis rotating mechanism to move the top surface welding unit along the x-axis, y-axis, and z-axis; the first z-axis rotating mechanism driving the top surface welding unit to rotate around the z-axis; and the top surface welding unit welding the workpiece to the top surface of the fuel tank; and a side surface welding device mounted on the frame, comprising a second three-axis moving module, a first dual-axis rotating module, and a side surface welding unit connected in sequence; the second three-axis moving module driving the first dual-axis rotating module to move the side surface welding unit along the x-axis, y-axis, and z-axis; the first dual-axis rotating module driving the side surface welding unit to rotate around the z-axis and an axis perpendicular to the z-axis; and the side surface welding unit welding the workpiece to the side surface of the fuel tank.

[0006] The welding equipment provided by the embodiments of the present invention has at least the following beneficial effects:

[0007] On the one hand, by setting a first three-axis moving module and a first z-axis rotating mechanism between the frame and the top surface welding unit, the first three-axis moving module can drive the first z-axis rotating mechanism to move the top surface welding unit along the x-axis, y-axis and z-axis directions, so that the top surface welding unit can weld the workpiece to the welding position on the top surface of the fuel tank. This adapts to the processing requirements of different fuel tank top surfaces and improves processing efficiency. At the same time, the first z-axis rotating mechanism can drive the top surface welding unit to rotate around the z-axis. When welding the top surface of the fuel tank, the top surface welding units in multiple top surface welding devices can avoid each other and avoid interference. This allows for simultaneous welding of multiple densely arranged welding positions on the top surface of the fuel tank, further improving processing efficiency. On the other hand, by setting a second three-axis moving module and a first two-axis rotating module between the frame and the side welding unit, the second three-axis moving module can drive the first two-axis rotating module to move the side welding unit along the x-axis, y-axis and z-axis directions, so that the side welding unit adapts to the welding position on the side of the fuel tank. At the same time, the first two-axis rotating module drives the side welding unit to rotate around the z-axis and rotate along an axis perpendicular to the z-axis to adjust the workpiece to be opposite to the welding position on the side of the fuel tank. The side welding unit can then weld the workpiece to this welding position. In this way, it can adapt to the processing requirements of different fuel tank sides, further improving processing efficiency. Thus, the welding equipment can simultaneously meet the welding requirements of different fuel tanks on the top and sides, and has strong versatility.

[0008] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0010] Figure 1 This is a schematic diagram of the structure of a welding device according to one embodiment of the present invention;

[0011] Figure 2 yes Figure 1 A schematic diagram of the welding equipment from another perspective;

[0012] Figure 3 yes Figure 1 A schematic diagram of the structure of multiple top surface welding devices and the first x-axis slide rail on the frame in the welding equipment;

[0013] Figure 4 yes Figure 3 A schematic diagram of the structure of a single top surface welding device and the first x-axis slide rail;

[0014] Figure 5 yes Figure 4A schematic diagram of the top surface welding device and the first x-axis slide rail from another perspective;

[0015] Figure 6 yes Figure 4 A schematic diagram of the structure of the top surface welding unit in the top surface welding device;

[0016] Figure 7 yes Figure 6 A partial structural diagram of the first z-axis rotation mechanism and the first z-axis slide block in the top surface welding device;

[0017] Figure 8 yes Figure 6 A schematic diagram of the chuck structure in the top welding unit;

[0018] Figure 9 yes Figure 1 A schematic diagram of the side welding device and the back welding device in the welding equipment and their structure with the frame;

[0019] Figure 10 yes Figure 9 A schematic diagram of the side welding device and the second y-axis slide rail on the frame;

[0020] Figure 11 yes Figure 10 A schematic diagram of the side welding device and the second y-axis slide rail on the frame from another perspective;

[0021] Figure 12 yes Figure 9 A schematic diagram of the back welding device and the third x-axis slide rail on the frame;

[0022] Figure 13 yes Figure 10 A schematic diagram of the structure of the first dual-axis rotating module and the second z-axis slide in the side welding device;

[0023] Figure 14 yes Figure 10 A schematic diagram of the welding unit in the side welding device when the misaligned moving seat is in the second position;

[0024] Figure 15 yes Figure 14 A schematic diagram of the welding unit in the side welding device from another perspective;

[0025] Figure 16 yes Figure 10 A schematic diagram of the welding unit in the side welding device when the misaligned moving seat is in the first position;

[0026] Figure 17 yes Figure 15 A schematic diagram of the second clamping structure in the welding unit;

[0027] Figure 18 yes Figure 1 A schematic diagram of the structure of a general-purpose feeding device;

[0028] Figure 19 yes Figure 18 A schematic diagram of the welding workbench in a general-purpose feeding device;

[0029] Figure 20 yes Figure 19 A schematic diagram of the welding workbench from another perspective;

[0030] Figure 21 yes Figure 19 A schematic diagram of the clamping mechanism in the welding workbench;

[0031] Figure 22 yes Figure 21 A schematic diagram of the clamping component in the clamping mechanism in its disassembled state;

[0032] Figure 23 yes Figure 19 A schematic diagram of the locking mechanism in the welding workbench;

[0033] Figure 24 yes Figure 19 A schematic diagram of the template assembly in the welding workbench;

[0034] Figure 25 yes Figure 18 A schematic diagram of the transition platform in a general-purpose feeding device;

[0035] Figure 26 yes Figure 25 A schematic diagram of the guide structure and guide rod in the transition platform;

[0036] Figure 27 yes Figure 25 A schematic diagram of the structure of the two guide rods in the transition platform.

[0037] Figure label:

[0038] 1000 welding equipment;

[0039] Frame 100; First x-axis slide rail 101; Second y-axis slide rail 103; Third x-axis slide rail 104;

[0040] Top surface welding device 200; First x-axis motion mechanism 21; First x-axis drive 211; First x-axis slide 212; First y-axis slide rail 213; First y-axis motion mechanism 22; First y-axis drive 221; First y-axis slide 222; First z-axis slide rail 223; First z-axis motion mechanism 23; First z-axis drive 231; First z-axis slide 232; First z-axis rotation mechanism 24; Z-axis rotation drive 241; Rotary seat 242; First gear 243; Second gear 244; Top surface welding unit 2 5; First reference plate 251; First thermal mold assembly 252; Thermal mold driver 2521; Double-sided thermal mold head 2522; First thermal mold drive component 2523; Second thermal mold drive component 2524; First slide block 2525; Second slide block 2526; First fixing assembly 253; Welding drive component 2531; First clamping structure 2532; Slide plate 2533; Clamp 2534; First fixing block 2535; First quick release block 2536; Second quick release block 2537; First rotating block 2538; First clamping body 2539;

[0041] Side welding device 300; second y-axis motion mechanism 31; second y-axis drive 311; second y-axis slide block 312; second x-axis slide rail 313; second x-axis motion mechanism 32; second x-axis drive 321; second x-axis slide block 322; second z-axis slide rail 323; second z-axis motion mechanism 33; second z-axis drive 331; second z-axis slide block 332; first dual-axis rotation module 34; first rotation mechanism 341; first rotation drive 3411; first connecting seat 3412; third gear 3413; fourth gear 3414; second rotation mechanism 342; second rotation drive 3421; second connecting seat 3422 Fifth gear 3423; Sixth gear 3424; Side welding unit 35; Second reference plate 351; Second hot mold assembly 352; First hot mold head 3521; Second hot mold head 3522; First translation drive 3523; Second fixing assembly 353; Second clamping structure 3531; Second fixing block 35313; Third quick release block 35314; Fourth quick release block 35315; Second rotating block 35316; Second clamping body 35317; Second translation drive 3532; Misalignment drive mechanism 354; Misalignment moving seat 3541; Misalignment drive 3542; First moving seat 3543; Second moving seat 3544;

[0042] Back welding device 400; third x-axis motion mechanism 41; third x-axis drive 411; third x-axis slide 412; third z-axis slide rail 413; third z-axis motion mechanism 42; third z-axis drive 421; third z-axis slide 422; second dual-axis rotation module 43; back welding unit 44;

[0043] Welding workbench 500; base 51; sliding rail 511; clamping mechanism 52; mounting bracket 521; locking hole 5204; flipping drive 522; clamping assembly 523; connecting structure 5231; insertion hole 5201; first locking hole 5202; clamping structure 5232; connecting rod 52321; strip hole 5203; pressure rod 52322; fixing part 52323; first locking part 5233; locking mechanism 53; fixing plate 531; connecting hole 5301; locking part 532; template assembly 54; mounting plate 541; template 542; second locking part 543; limit rod 544; photoelectric sensor 5441; guide plate 545; strip hole 5401; transition rod 55; transition plate 56; lifting mechanism 57; material frame 58;

[0044] Transition table 600; base 61; guide structure 611; slide bar 6111; guide part 613; clearance part 614; connecting part 615; guide rod 62; clearance groove 6201; limiting structure 621; connecting block 6211; clamping block 6212; driving component 6213; slider 622; stop bar 63; adjusting structure 631; feeding table 700. Detailed Implementation

[0045] In existing technologies, the top surface of a fuel tank is typically a roughly horizontal plane with grooves and protrusions. In smaller or more complex fuel tanks, the welding points on the top surface are often close together and densely packed, leading to interference when multiple welding units are welding simultaneously. Compared to the top surface, the sides of the fuel tank are more complex. In some fuel tank products, the sides may have sections with sloping surfaces (forming an acute angle with the horizontal plane), and the side profile may often extend along a curve (sloping surfaces and curved profiles may coexist). During welding, the workpiece needs to be welded to the welding position on the side of the product in a direction perpendicular to the side. Therefore, when dealing with different fuel tanks, workers need to frequently adjust the relative position of the welding unit to the side of the tank to meet welding requirements, resulting in low processing efficiency.

[0046] Please see Figures 1 to 4 , Figures 9 to 11This invention provides a welding device 1000, which includes a frame 100, multiple top surface welding devices 200, and side surface welding devices. The multiple top surface welding devices 200 are mounted on the frame 100. Each top surface welding device 200 includes a first three-axis moving module, a first z-axis rotating mechanism 24, and a top surface welding unit 25 connected in sequence. The first three-axis moving module drives the first z-axis rotating mechanism 24 to move the top surface welding unit 25 along the x-axis, y-axis, and z-axis. The first z-axis rotating mechanism 24 drives the top surface welding unit 25 to rotate around the z-axis. The top surface welding unit 25 welds the workpiece to the top surface of the oil tank. Side surface welding... The welding device 300 is installed on the frame 100. The side welding device 300 includes a second three-axis moving module, a first dual-axis rotating module 34 and a side welding unit 35 connected in sequence. The second three-axis moving module is used to drive the first dual-axis rotating module 34 to move the side welding unit 35 along the x-axis, y-axis and z-axis. The first dual-axis rotating module 34 is used to drive the side welding unit 35 to rotate around the z-axis and the axis perpendicular to the z-axis. The side welding unit 35 is used to weld the workpiece to the side of the oil tank.

[0047] Specifically, the frame 100 is constructed as a frame formed by welding multiple metal pipes. Multiple top-surface welding devices 200 are suspended from the top of the frame 100 to facilitate welding of the top surface of the oil tank placed inside the frame 100. Side-surface welding devices 300 are installed at the bottom of the frame 100, located on the horizontal side of the oil tank, to facilitate welding of the sides of the oil tank. It should be noted that the welding equipment 1000 provided by this invention can be used not only for welding oil tanks but also for welding other components such as batteries.

[0048] In this embodiment, the first three-axis motion module includes a first x-axis motion mechanism 21, a first y-axis motion mechanism 22, and a first z-axis motion mechanism 23 connected in sequence. The first x-axis motion mechanism 21 is mounted on the frame 100 and can drive the first y-axis motion mechanism 22 to move the first z-axis motion mechanism 23, the first z-axis rotation mechanism 24, and the top surface welding unit 25 relative to the frame 100 along the x-axis direction. The first y-axis motion mechanism 22 is mounted on the first x-axis motion mechanism 21 and can drive the first z-axis motion mechanism 23 to move the first z-axis rotation mechanism 24 and the top surface welding unit 25 relative to the first x-axis motion mechanism 21 along the y-axis direction. The first z-axis motion mechanism 23 is mounted on the first y-axis motion mechanism 22 and can drive the first z-axis rotation mechanism 24 to move the top surface welding unit 25 relative to the first y-axis motion mechanism 22 along the z-axis direction. The first z-axis rotation mechanism 24 is mounted on the first z-axis motion mechanism 23 and can drive the top surface welding unit 25 to rotate relative to the first z-axis motion mechanism 23 around the z-axis. This allows the top welding unit 25 to move along the x-axis, y-axis, and z-axis, as well as rotate around the z-axis.

[0049] In this embodiment, the second three-axis moving module includes a second y-axis motion mechanism 31, a second x-axis motion mechanism 32, and a second z-axis motion mechanism 33 connected in sequence. The second y-axis motion mechanism 31 is mounted on the frame 100 and can drive the second x-axis motion mechanism 32, the second z-axis motion mechanism 33, the first dual-axis rotation module 34, and the side welding unit 35 to move relative to the frame 100 along the y-axis direction. The second x-axis motion mechanism 32 is mounted on the second y-axis motion mechanism 31 and can drive the second z-axis motion mechanism 33, the first dual-axis rotation module 34, and the side welding unit 35 to move relative to the second y-axis motion mechanism 31 along the x-axis direction. The second z-axis motion mechanism 33 is mounted on the second x-axis motion mechanism 32 and can drive the first dual-axis rotation module 34 and the side welding unit 35 to move relative to the second x-axis motion mechanism 32 along the z-axis direction. The first dual-axis rotation module 34 is mounted on the second z-axis motion mechanism 33 and can drive the side welding unit 35 to rotate relative to the second z-axis motion mechanism 33 around the z-axis and along an axis perpendicular to the z-axis. This allows the side welding unit 35 to move along the x-axis, y-axis, and z-axis, as well as rotate around the z-axis and around an axis perpendicular to the z-axis.

[0050] On the one hand, by setting a first three-axis moving module and a first z-axis rotating mechanism 24 between the frame 100 and the top surface welding unit 25, the first three-axis moving module can drive the first z-axis rotating mechanism 24 to move the top surface welding unit 25 along the x-axis, y-axis and z-axis directions, so that the top surface welding unit 25 can weld the workpiece to the welding position on the top surface of the oil tank. This adapts to the processing requirements of different oil tank top surfaces and improves processing efficiency. At the same time, the first z-axis rotating mechanism 24 can drive the top surface welding unit 25 to rotate around the z-axis. When welding the top surface of the oil tank, the top surface welding units 25 in multiple top surface welding devices 200 can avoid each other and avoid interference. This allows multiple densely arranged welding positions on the top surface of the oil tank to be welded simultaneously, further improving processing efficiency. On the other hand, by setting a second three-axis moving module and a first dual-axis rotating module 34 between the frame 100 and the side welding unit 35, the second three-axis moving module can drive the first dual-axis rotating module 34 to move the side welding unit 35 along the x-axis, y-axis and z-axis directions, so that the side welding unit 35 adapts to the welding position on the side of the oil tank. At the same time, the first dual-axis rotating module 34 drives the side welding unit 35 to rotate around the z-axis and rotate along an axis perpendicular to the z-axis to adjust the workpiece to be opposite to the welding position on the side of the oil tank. The side welding unit 35 can weld the workpiece to the welding position. In this way, it can adapt to the processing requirements of different oil tank sides, further improving the processing efficiency. Thus, the welding equipment 1000 can simultaneously meet the welding requirements of different oil tanks on the top and sides, and has strong versatility.

[0051] The following is a detailed description of the top surface welding device 200 and its related structures in the welding equipment 1000.

[0052] In one embodiment of this implementation, please refer to Figure 3 and Figure 4 The frame 100 is provided with a first x-axis slide rail 101. The first x-axis motion mechanism 21 includes a first x-axis drive member 211 and a first x-axis slide block 212. The first x-axis slide block 212 is slidably engaged with the first x-axis slide rail 101. The first x-axis drive member 211 is mounted on the frame 100 and connected to the first x-axis slide block 212. The first y-axis motion mechanism 22 is mounted on the first x-axis slide block 212. This configuration enables high-precision movement of the top surface welding unit 25 relative to the frame 100 in the x-axis direction.

[0053] In one embodiment of this implementation, please refer to Figures 3 to 5The welding equipment 1000 includes multiple sets of top surface welding devices 200, with at least two top surface welding devices 200 in each set. Multiple first x-axis slide rails 101 are arranged sequentially along the y-axis. The first x-axis slide blocks 212 of each set of top surface welding devices 200 are slidably engaged with the same first x-axis slide rail 101. This arrangement allows the first x-axis slide blocks 212 of each set of top surface welding devices 200 to move along the same first x-axis slide rail 101, simplifying the structure and reducing costs. Furthermore, it improves the positional accuracy of the top surface welding units 25 within the same set and reduces the risk of interference.

[0054] In this embodiment, the welding equipment 1000 includes two sets of top surface welding devices 200, with two devices in each set, for a total of four top surface welding devices 200. The frame 100 is equipped with two first x-axis slide rails 101, spaced apart along the y-axis. The two sets of top surface welding devices 200 are slidably engaged with their respective first x-axis slide rails 101. This arrangement allows all four top surface welding devices 200 to simultaneously weld the top surface of the oil tank. Specifically, in this embodiment, the four top surface welding devices 200 are used to weld the nozzle, support block, isolation valve bracket, and pipe clamp to their respective welding positions on the top surface of the oil tank.

[0055] In one embodiment of this implementation, please refer to Figures 3 to 5 The first y-axis motion mechanism 22 includes a first y-axis drive member 221 and a first y-axis slide block 222. The first x-axis slide block 212 is provided with a first y-axis slide rail 213. The first y-axis slide block 222 slides in slidable engagement with the first y-axis slide rail 213. The first y-axis drive member 221 is mounted on the first x-axis slide block 212 and connected to the first y-axis slide block 222. The first z-axis motion mechanism 23 is mounted on the first y-axis slide block 222. This configuration enables high-precision movement of the top surface welding unit 25 relative to the frame 100 in the y-axis direction.

[0056] In one embodiment of this implementation, please refer to Figures 3 to 5 The first z-axis motion mechanism 23 includes a first z-axis drive member 231 and a first z-axis slide block 232. The first y-axis slide block 222 is provided with a first z-axis slide rail 223, and the first z-axis slide block 232 slides in cooperation with the first z-axis slide rail 223. The first z-axis drive member 231 is mounted on the first y-axis slide block 222 and connected to the first z-axis slide block 232. The first z-axis rotation mechanism 24 is mounted on the first z-axis slide block 232. With this configuration, high-precision movement of the top surface welding unit 25 relative to the frame 100 in the z-axis direction can be achieved.

[0057] In one embodiment of this implementation, please refer to Figure 3 , Figure 4 and Figure 7 The first z-axis rotation mechanism 24 includes a z-axis rotation drive 241 and a rotating seat 242. The z-axis rotation drive 241 is mounted on the first z-axis motion mechanism 23, and the rotating seat 242 is rotatably mounted on the first z-axis motion mechanism 23. The top surface welding unit 25 is mounted on the rotating seat 242. The z-axis rotation drive 241 is provided with a first gear 243, and the rotating seat 242 is provided with a second gear 244. The first gear 243 and the second gear 244 mesh. With this configuration, the z-axis rotation drive 241 can drive the rotating seat 242 to rotate relative to the first z-axis motion mechanism 23 through gear meshing, thereby enabling the top surface welding unit 25 to rotate relative to the frame 100 around the z-axis.

[0058] Specifically, the z-axis rotation drive 241 is mounted on the first z-axis slide 232, and the rotating seat 242 is mounted on the first z-axis slide 232 via bearings, so that the rotating seat 242 can rotate relative to the first z-axis slide 232 around the z-axis. The rotating seat 242 passes through the first z-axis slide 232, and a second gear 244 is provided at its bottom end.

[0059] In one embodiment of this implementation, please refer to Figure 4 and Figure 7 The number of teeth on the first gear 243 is less than the number of teeth on the second gear 244. This configuration allows for speed reduction transmission through the cooperation of the first gear 243 and the second gear 244, thereby increasing the output torque and improving the rotational accuracy and reliability of the top welding unit 25.

[0060] In one embodiment of this implementation, please refer to Figure 4 and Figure 6The top surface welding unit 25 includes a first reference plate 251, a first hot mold assembly 252, and a first fixing assembly 253. The first reference plate 251 is connected to the first z-axis rotation mechanism 24. Both the first hot mold assembly 252 and the first fixing assembly 253 are mounted on the first reference plate 251. The first hot mold assembly 252 is used to heat the workpiece and the oil tank to a molten state, and the first fixing assembly 253 is used to fix the workpiece and press the molten workpiece onto the oil tank. With this configuration, the first hot mold assembly 252 can heat both the workpiece and the oil tank simultaneously, which helps to improve welding efficiency. Furthermore, since the first hot mold assembly 252 and the first fixing assembly 253 are both mounted on the first reference plate 251, and the first reference plate 251 is connected to the first z-axis rotation mechanism 24, the first z-axis rotation mechanism 24 can drive the first reference plate 251 to drive the first hot mold assembly 252 and the first fixing assembly 253 to rotate synchronously around the z-axis. This allows the weldment on the first fixing assembly 253 to be positioned above the welding position of the oil tank. The first fixing assembly 253 can press the weldment down onto the oil tank. At the same time, driven by the first z-axis rotation mechanism 24, the first hot mold assembly 252 and the first fixing assembly 253 in the adjacent top surface welding unit 25 are less likely to interfere with each other, so as to achieve multi-point synchronous welding and improve processing efficiency.

[0061] In this embodiment, the first reference plate 251 is fixedly connected to the rotating seat 242, so that under the drive of the z-axis rotation drive member 241, the rotating seat 242 can drive the first reference plate 251 to rotate synchronously.

[0062] In one embodiment of this implementation, please refer to Figure 4 and Figure 6 The first hot mold assembly 252 and the first fixing assembly 253 are respectively installed on opposite sides of the first reference plate 251. This arrangement results in a simpler structure and reduces the space occupied by the top welding unit 25.

[0063] In one embodiment of this implementation, please refer to Figure 4 and Figure 6The first fixing component 253 includes a welding drive 2531 and a first clamping structure 2532 for clamping the workpiece. The welding drive 2531 is mounted on the first reference plate 251 and connected to the first clamping structure 2532. The first hot mold assembly 252 includes a hot mold driver 2521 and a double-sided hot mold head 2522. The hot mold driver 2521 is mounted on the first reference plate 251 and connected to the double-sided hot mold head 2522. The hot mold driver 2521 is used to drive the double-sided hot mold head 2522 to move to the bottom side of the first clamping structure 2532 so that the top side of the double-sided hot mold head 2522 is opposite to the workpiece in the z-axis direction. The hot mold driver 2521 is also used to drive the double-sided hot mold head 2522 to abut against the oil tank. The welding drive 2531 is used to drive the first clamping structure 2532 to move the workpiece along the z-axis direction so that the workpiece abuts against the double-sided hot mold head 2522 or the oil tank. Specifically, the double-sided hot mold head 2522 has an upper heating surface and a lower heating surface. The upper heating surface is used to heat the weldment, and the lower heating surface is used to heat the oil tank.

[0064] It is understandable that the hot mold driver 2521 drives the double-sided hot mold head 2522 to move to the bottom side of the first clamping structure 2532 in the z-axis direction. At this time, the welding drive component 2531 can drive the welding workpiece to move downward in the z-axis direction by driving the first clamping structure 2532, so that the welding workpiece abuts against the upper heating surface of the double-sided hot mold head 2522, thereby achieving heating of the welding workpiece. In addition, the hot mold driver 2521 can also drive the double-sided hot mold head 2522 to move closer to the oil tank, so that the lower heating surface of the double-sided hot mold head 2522 abuts against the oil tank, thereby achieving heating of the welding workpiece. Thus, the double-sided hot mold head 2522 achieves automated heating of the oil tank and the welding workpiece. Meanwhile, after the workpiece is heated to a molten state, the hot mold driver 2521 can drive the double-sided hot mold head 2522 away from the driving path of the welding driver 2531 to avoid the first clamping structure 2532. Then the welding driver 2531 drives the first clamping structure 2532 to move the workpiece along the z-axis, completing the automated welding of the workpiece and the oil tank.

[0065] In one embodiment of this implementation, please refer to Figure 6The thermal mold actuator 2521 includes a first thermal mold drive 2523 and a second thermal mold drive 2524. The first thermal mold drive 2523 is mounted on a first reference plate 251 and connected to the second thermal mold drive 2524. A double-sided thermal mold head 2522 is disposed on the second thermal mold drive 2524. The first thermal mold drive 2523 and the second thermal mold drive 2524 cooperate to drive the double-sided thermal mold head 2522 to move along the z-axis and in a direction perpendicular to the z-axis. With this configuration, the thermal mold actuator 2521 can drive the double-sided thermal mold head 2522 to move along the z-axis to abut against the oil tank to heat the oil tank, and the thermal mold actuator 2521 can drive the double-sided thermal mold head 2522 to move in a direction perpendicular to the z-axis to below the first clamping structure 2532 in the z-axis direction to facilitate heating of the weldment.

[0066] In this embodiment, the driving direction of the first thermal mold driving member 2523 is the z-axis direction, and the driving direction of the second thermal mold driving member 2524 is perpendicular to the z-axis direction. That is, the first thermal mold driving member 2523 can drive the second thermal mold driving member 2524 to move the double-sided thermal mold head 2522 along the z-axis direction, and the second thermal mold driving member can drive the double-sided thermal mold head 2522 to move in a direction perpendicular to the z-axis direction. In other embodiments, the driving direction of the first thermal mold driving member 2523 can also be perpendicular to the z-axis direction, and the driving direction of the second thermal mold driving member 2524 can also be in the z-axis direction.

[0067] In one embodiment of this implementation, please refer to Figure 6 The thermal mold actuator 2521 includes a first slide 2525 and a second slide 2526. The first slide 2525 is slidably engaged with a first reference plate 251. A first thermal mold drive component 2523 is connected to the first slide 2525. The second slide 2526 is slidably engaged with the first slide 2525. A second thermal mold drive component 2524 is mounted on the first slide 2525 and connected to the second slide 2526. A double-sided thermal mold head 2522 is disposed on the second slide 2526. This configuration enables high-precision movement of the double-sided thermal mold head 2522 in both axial directions.

[0068] In one embodiment of this implementation, please refer to Figure 6 The first reference plate 251 and the first slide block 2525 are slidably engaged via guide rails and guide grooves; and / or, the first slide block 2525 and the second slide block 2526 are slidably engaged via guide rails and guide grooves. This configuration can further improve the movement accuracy of the double-sided hot mold head 2522.

[0069] In this embodiment, the first reference plate 251 and the first slide block 2525, as well as the first slide block 2525 and the second slide block 2526, are all slidably engaged via guide rails and guide grooves. In other embodiments, the first reference plate 251 and the first slide block 2525, as well as the first slide block 2525 and the second slide block 2526, may also employ other sliding engagement methods.

[0070] In one embodiment of this implementation, please refer to Figure 6 and Figure 8 The first clamping structure 2532 includes a sliding plate 2533 and a chuck 2534. The sliding plate 2533 slides in engagement with the first reference plate 251 and is connected to the welding drive component 2531. The chuck 2534 is detachably mounted on the sliding plate 2533 and is used to clamp and fix the weldment with a matching shape. This configuration allows for quick disassembly and replacement of the chuck 2534 with a dedicated chuck when processing different oil tanks, thereby improving the versatility of welding processing and increasing processing efficiency.

[0071] In this embodiment, the chuck 2534 includes a first fixing block 2535, a first quick-release block 2536, a second quick-release block 2537, a first rotating block 2538, and a first clamping body 2539 connected in sequence. The first fixing block 2535 is fixedly connected to the slide plate 2533. The first quick-release block 2536 and the second quick-release block 2537 achieve quick disassembly and installation through a snap-fit ​​connection. The first rotating block 2538 and the second quick-release block 2537 have multiple installation positions. The relative angles of the first rotating block 2538 and the second quick-release block 2537 around the z-axis differ in different installation positions to simultaneously meet the requirements of avoiding interference and aligning the weldment with the oil tank. The first clamping body 2539 has an installation groove whose shape is adapted to the weldment, and the weldment is clamped and fixed within the installation groove. Due to the quick-release connection of the first quick-release block 2536 and the second quick-release block 2537, the dedicated first clamping body 2539 can be replaced promptly.

[0072] Understandably, it is usually required that the weldment be welded to the surface of the fuel tank at a certain angle. The first z-axis rotation mechanism 24 can, on the one hand, adjust the relative angle between the weldment and the fuel tank around the z-axis to align the weldment with the fuel tank, and on the other hand, it can swing the top surface welding unit 25 to avoid interference with other adjacent units. In actual use, two situations may be encountered: when the weldment is adjusted to be aligned with the fuel tank by the first z-axis rotation mechanism 24, the top surface welding unit 25 may interfere with other adjacent units; or when the top surface welding unit 25 is swung by the first z-axis rotation mechanism 24 to avoid interference with other adjacent units, the weldment may not be aligned with the fuel tank. In this embodiment, a first rotating block 2538 is provided between the second quick-release block 2537 and the first clamping body 2539. The first rotating block 2538 and the second quick-release block 2537 have multiple installation positions, so as to adjust the angle of the weldment on the first clamping body 2539 around the z-axis. This ensures that when the first z-axis rotation mechanism 24 adjusts the weldment to be aligned with the oil tank, the top surface welding unit 25 will not interfere with other adjacent units.

[0073] To better address the aforementioned issues, in some embodiments, the first clamping structure 2532 is equipped with a rotation adjustment mechanism (not shown) and a camera. Both the rotation adjustment mechanism and the camera are mounted on the slide plate 2533. The rotation adjustment mechanism is connected to the chuck 2534 and is used to drive the chuck 2534 to rotate the weldment relative to the oil tank around the z-axis. The camera is used to acquire an image of the oil tank so that the rotation adjustment mechanism can adjust the weldment to be aligned with the oil tank based on the image. With this configuration, as long as the first z-axis rotation mechanism 24 ensures that the top surface welding unit 25 does not interfere with other adjacent units, the weldment can be adjusted to be aligned with the oil tank by the rotation adjustment mechanism.

[0074] In this embodiment, the first x-axis drive member 211, the first y-axis drive member 221 and the first z-axis drive member 231 are all driven linearly by a lead screw motor, and the first hot mold drive member 2523, the second hot mold drive member 2524 and the welding drive member 2531 are all driven linearly by a cylinder. The output push rod of the cylinder (not shown) is connected to the corresponding moving part.

[0075] The welding steps of the top surface welding device 200 in the welding equipment 1000 provided in this embodiment are as follows:

[0076] Step 1: The first x-axis motion mechanism 21, the first y-axis motion mechanism 22, the first z-axis motion mechanism 23 and the first z-axis rotation mechanism 24 work together to drive the top surface welding unit 25 to move along the x-axis, y-axis and z-axis and rotate around the z-axis, so that the top surface welding unit 25 is in a suitable position (with a certain distance from the adjacent top surface welding unit 25 to ensure that no interference occurs after welding continues);

[0077] Step 2: The second hot mold drive 2524 drives the double-sided hot mold head 2522 to move along the direction perpendicular to the z-axis to the bottom side of the first clamping structure 2532. At this time, the upper heating surface of the double-sided hot mold head 2522 is opposite to the first clamping structure 2532, and the lower heating surface of the double-sided hot mold head 2522 is opposite to the welding position of the oil tank.

[0078] Step 3: The first hot mold drive component 2523 drives the double-sided hot mold head 2522 to move downward along the z-axis direction, while the welding drive component 2531 drives the first clamping structure 2532 to move downward along the z-axis direction, so that the lower heating surface of the double-sided hot mold head 2522 abuts against the welding position of the oil tank, and the upper heating surface of the double-sided hot mold head 2522 abuts against the workpiece. The double-sided hot mold head 2522 heats both the workpiece and the oil tank at the same time, so that both enter the melting state simultaneously to improve the welding quality.

[0079] Step 4: After the workpiece and the oil tank are heated to the required position, the first hot mold drive 2523 drives the double-sided hot mold head 2522 to move upward along the z-axis, so that the lower heating surface of the double-sided hot mold head 2522 is separated from the oil tank. At the same time, the welding drive 2531 drives the first clamping structure 2532 to move upward along the z-axis, so that the upper heating surface of the double-sided hot mold head 2522 is separated from the workpiece.

[0080] Step 5: The second hot mold drive 2524 drives the double-sided hot mold head 2522 to move in a direction perpendicular to the z-axis, so that the double-sided hot mold head 2522 leaves between the weldment and the oil tank;

[0081] Step 6: The welding drive component 2531 drives the first clamping structure 2532 to move the workpiece downward along the z-axis, pressing the workpiece onto the welding position of the oil tank, thereby completing the welding.

[0082] The following is a detailed description of the side welding device 300 and its related structures in the welding equipment 1000.

[0083] In some embodiments, there are multiple side welding devices 300, which simultaneously weld oil tanks at multiple densely arranged welding positions. The presence of the first dual-axis rotating module 34 allows the side welding units 35 of the multiple side welding devices 300 to avoid interference with each other, preventing the multiple side welding units 35 from being unable to weld simultaneously.

[0084] In one embodiment of this implementation, please refer to Figure 10 and Figure 11The second y-axis motion mechanism 31 includes a second y-axis drive member 311 and a second y-axis slide block 312. The frame 100 is provided with a second y-axis slide rail 103 that slides with the second y-axis slide block 312. The second y-axis drive member 311 is mounted on the frame 100 and connected to the second y-axis slide block 312. The second x-axis motion mechanism 32 includes a second x-axis drive member 321 and a second x-axis slide block 322. The second y-axis slide block 312 is provided with a second x-axis slide rail 313 that slides with the second x-axis slide block 322. The second x-axis drive member 321 is mounted on the second y-axis slide block 312 and connected to the second x-axis slide block 322. The second z-axis motion mechanism 33 includes a second z-axis drive member 331 and a second z-axis slide block 332. The second x-axis slide block 322 is provided with a second z-axis slide rail 323 that slides and engages with the second z-axis slide block 332. The second z-axis drive member 331 is mounted on the second x-axis slide block 322 and connected to the second z-axis slide block 332. The first dual-axis rotation mechanism is mounted on the second z-axis slide block 332. This configuration enables high-precision movement of the side welding unit 35 relative to the frame 100 in the x-axis, y-axis, and z-axis directions.

[0085] In one embodiment of this implementation, please refer to Figure 10 , Figure 11 and Figure 13 The first dual-axis rotation module 34 includes a first rotation mechanism 341 and a second rotation mechanism 342. The first rotation mechanism 341 is mounted on the second z-axis motion mechanism 33 and connected to the second rotation mechanism 342. The side welding unit 35 is disposed on the second rotation mechanism 342. The first rotation mechanism 341 drives the second rotation mechanism 342 to rotate the side welding unit 35 around the z-axis, and the second rotation mechanism 342 drives the side welding unit 35 to rotate around an axis perpendicular to the z-axis. With this configuration, the first rotation mechanism 341 and the second rotation mechanism 342 can work together to achieve the rotation of the side welding unit 35 around the z-axis and the axis perpendicular to the z-axis.

[0086] In one embodiment of this implementation, please refer to Figure 10 , Figure 11 and Figure 13The first rotating mechanism 341 includes a first rotating drive member 3411 and a first connecting seat 3412. The first connecting seat 3412 is rotatably mounted on the second z-axis motion mechanism 33. The first rotating drive member 3411 is mounted on the second z-axis motion mechanism 33 and connected to the first connecting seat 3412. The second rotating mechanism 342 includes a second rotating drive member 3421 and a second connecting seat 3422. The second connecting seat 3422 is rotatably mounted on the first connecting seat 3412 along an axis perpendicular to the z-axis. The second rotating drive member 3421 is mounted on the first connecting seat 3412 and connected to the second connecting seat 3422. The side welding unit 35 is disposed on the second connecting seat 3422. With this configuration, under the drive of the first rotating drive member 3411 and the second rotating drive member 3421, the second connecting seat 3422 can drive the side welding unit 35 to rotate around the z-axis and an axis perpendicular to the z-axis.

[0087] Specifically, the first rotary drive 3411 is mounted on the second z-axis slide 332, and the first connecting seat 3412 is mounted on the second z-axis slide 332 via bearings, so that the first connecting seat 3412 can rotate relative to the second z-axis slide 332 around the z-axis.

[0088] In one embodiment of this implementation, please refer to Figure 10 , Figure 11 and Figure 13 The first rotary drive component 3411 is equipped with a third gear 3413, and the first connecting seat 3412 is equipped with a fourth gear 3414 that meshes with the third gear 3413. The number of teeth on the third gear 3413 is less than the number of teeth on the fourth gear 3414. This arrangement allows for speed reduction transmission through the cooperation of the third gear 3413 and the fourth gear 3414, thereby increasing the output torque on the first connecting seat 3412 and improving the rotational accuracy and reliability of the side welding unit 35.

[0089] Specifically, the first connecting seat 3412 passes through the second z-axis slide 332, the fourth gear 3414 is located at the top of the first connecting seat 3412, and the second connecting seat 3422 is installed on the end face of the fourth gear 3414.

[0090] In one embodiment of this implementation, please refer to Figure 10 , Figure 11 and Figure 13The second rotary drive component 3421 is equipped with a fifth gear 3423, and the second connecting seat 3422 is equipped with a sixth gear 3424 that meshes with the fifth gear 3423. The number of teeth of the fifth gear 3423 is less than the number of teeth of the sixth gear 3424. With this arrangement, speed reduction transmission can be achieved through the cooperation of the third gear 3413 and the fourth gear 3414, thereby increasing the output torque on the second connecting seat 3422 and improving the rotational accuracy and reliability of the side welding unit 35.

[0091] Specifically, the second connecting seat 3422 passes through the first connecting seat 3412, and a sixth gear 3424 is installed at one end of it, with the side welding unit 35 installed on the end face of the sixth gear 3424.

[0092] In one embodiment of this implementation, please refer to Figure 9 The system includes two side welding devices 300, which are arranged opposite each other to weld the workpiece to the two opposite sides of the fuel tank. Specifically, the two side welding devices 300 have identical structures. This arrangement allows for simultaneous welding of both sides of the fuel tank, improving processing efficiency.

[0093] Specifically, the two side welding devices 300 are used to weld the nozzle, support block, isolation valve bracket and pipe clamp to the corresponding welding positions on the side of the oil tank.

[0094] In one embodiment of this implementation, please refer to Figure 14 The side welding unit 35 includes a second reference plate 351, a second hot mold assembly 352, and a second fixing assembly 353. The second reference plate 351 is connected to the first dual-axis rotating module 34. Both the second hot mold assembly 352 and the second fixing assembly 353 are mounted on the second reference plate 351. The second hot mold assembly 352 is used to heat the weldment and the oil tank to a molten state, and the second fixing assembly 353 is used to fix the weldment and press the molten weldment onto the oil tank. Specifically, the second reference plate 351 is mounted on the end face of the sixth gear 3424. With this configuration, the second hot mold assembly 352 and the second fixing assembly 353 are both mounted on the second reference plate 351. The second reference plate 351 is connected to the first dual-axis rotating module 34, so that the first dual-axis rotating module 34 can drive the second reference plate 351 to drive the second hot mold assembly 352 and the second fixing assembly 353 to perform dual-axis rotational motion synchronously. This allows the weldment on the second fixing assembly 353 to be located in the normal direction of the welding position on the side of the oil tank, so that the second fixing assembly 353 can press the weldment down onto the oil tank. It also allows the heating surface of the second hot mold assembly 352 to be located in the normal direction of the welding position on the side of the oil tank, so that the second hot mold assembly 352 can heat the oil tank.

[0095] In one embodiment of this implementation, please refer to Figure 14 The second hot mold assembly 352 includes a first hot mold head 3521, a second hot mold head 3522, and a first translation drive 3523. The first hot mold head 3521 is fixed on the second reference plate 351. The first translation drive 3523 is disposed on the second reference plate 351 and connected to the second hot mold head 3522. The first translation drive 3523 is used to drive the second hot mold head 3522 to move to abut against the oil tank. The second fixing assembly 353 includes a second clamping structure 3531 and a second translation drive 3532. The second translation drive 3532 is disposed on the second reference plate 351 and connected to the second clamping structure 3531. The second translation drive 3532 is used to drive the second clamping structure 3531 to move the weldment to abut against the first hot mold head 3521 and the oil tank respectively.

[0096] By fixing the first hot die head 3521 onto the second reference plate 351, the second translation drive 3532 can drive the second clamping structure 3531 to move the workpiece to abut against the first hot die head 3521, thereby heating the workpiece. Furthermore, by setting up the second hot die head 3522 and the first translation drive 3523, the first translation drive 3523 can drive the second hot die head 3522 to abut against the oil tank, thereby heating the oil tank. Thus, the oil tank and the workpiece are heated by independent hot dies, allowing both to simultaneously enter the molten state, improving welding quality. Moreover, the separate arrangement of the hot dies effectively shortens the welding stroke of the second clamping structure 3531 (the stroke by which the second translation drive 3532 drives the second clamping structure 3531), facilitating the welding of large-sized oil tanks in space-constrained environments. In addition, the second translation drive 3532 can simultaneously heat the weldment and weld the weldment to the oil tank. The structure is relatively simple and helps to reduce costs.

[0097] In one embodiment of this implementation, please refer to Figure 14 In order to reduce costs and improve welding accuracy, the first translation drive 3523 and the second translation drive 3532 are both constructed as cylinders and arranged in parallel.

[0098] In one embodiment of this implementation, please refer to Figure 14 The heating surface of the first hot die head 3521 faces opposite directions to the heating surface of the second hot die head 3522. This arrangement allows the weldment and the oil tank to be heated from opposite sides via their respective hot die heads, saving horizontal space.

[0099] Specifically, Figure 14 The heating surface of the first hot mold head 3521 is approximately facing right, and the heating surface of the second hot mold head 3522 is approximately facing left.

[0100] In one embodiment of this implementation, please refer to Figures 14 to 16 The side welding unit 35 includes a misalignment drive mechanism 354, which includes a misalignment moving seat 3541 and a misalignment drive member 3542. The first translation drive member 3523 and the second translation drive member 3532 are both disposed on the misalignment moving seat 3541. The misalignment drive member 3542 is disposed on the second reference plate 351 and connected to the misalignment moving seat 3541. The misalignment drive member 3542 is used to drive the misalignment moving seat 3541 to move between a first position and a second position. When the misalignment moving seat 3541 is in the first position, the second clamping structure 3531 is opposite to the first hot mold head 3521, and the second hot mold head 3522 is opposite to the welding position of the oil tank. When the misalignment moving seat 3541 is in the second position, the second clamping structure 3531 is opposite to the welding position of the oil tank. Understandably, after the misalignment drive 3542 drives the misalignment moving seat 3541 to the first position, the second translation drive 3532 can drive the second clamping structure 3531 to move the weldment to abut against the first hot die head 3521. Simultaneously, the first translation drive 3523 can drive the second hot die head 3522 to abut against the welding position of the oil tank, so that the weldment and the welding position of the oil tank are simultaneously heated to a molten state to ensure welding quality. Then, the misalignment drive 3542 drives the misalignment moving seat 3541 from the first position to the second position, so that the second translation drive 3532 can drive the second clamping structure 3531 to move the molten weldment to abut against the molten welding position of the oil tank, thereby completing the fusion welding. Furthermore, during the welding process, the second translation drive 3532 can simultaneously serve as the drive component for heating and fusion of the weldment, simplifying the structure and reducing costs, which is beneficial for reducing the horizontal dimension of the side welding unit 35.

[0101] In one embodiment of this implementation, please refer to Figures 14 to 16 The misalignment drive mechanism 354 includes a first movable seat 3543 and a second movable seat 3544, both of which are slidably fitted onto the misalignment movable seat 3541. A second hot die head 3522 is disposed on the first movable seat 3543, and a second clamping structure 3531 is disposed on the second movable seat 3544. This arrangement can improve the movement accuracy of the second hot die head 3522 and the second clamping structure 3531, which is beneficial to improving the welding quality.

[0102] In one embodiment of this implementation, Figure 14 and Figure 17 The second clamping structure 3531 is detachably connected to the second movable seat 3544 and is used to clamp and fix the weldment with a matching shape. This arrangement allows for quick disassembly and replacement of the second clamping structure 3531 with a dedicated second clamping structure 3531 when processing different oil tanks, thereby improving the versatility of welding processing and increasing processing efficiency.

[0103] Specifically, the second clamping structure 3531 includes a second fixing block 35313, a third quick-release block 35314, a fourth quick-release block 35315, a second rotating block 35316, and a second clamping body 35317 connected in sequence. The second fixing block 35313 is fixedly connected to the second moving seat 3544. The third quick-release block 35314 and the fourth quick-release block 35315 achieve quick disassembly and installation through a snap-fit ​​mechanism. The second rotating block 35316 and the fourth quick-release block 35315 have multiple installation positions. The relative angles of the second rotating block 35316 and the fourth quick-release block 35315 around an axis parallel to the driving direction of the second translational drive member 3532 are different in different installation positions, facilitating alignment between the weldment and the oil tank. The second clamping body 35317 has an installation groove whose shape is adapted to the weldment, and the weldment is clamped and fixed within the installation groove. The quick-release connection between the third quick-release block 35314 and the fourth quick-release block 35315 allows the dedicated second clamping body 35317 to be replaced in a timely manner.

[0104] In some embodiments, the second clamping structure 3531 is provided with a rotation adjustment mechanism (not shown) and a camera. Both the rotation adjustment mechanism and the camera are mounted on the second movable seat 3544. The rotation adjustment mechanism is connected to the second fixed block 35313 and is used to drive the second fixed block 35313 to rotate the second clamping body 35317 and the weldment relative to the oil tank about an axis parallel to the driving direction of the second translation drive member 3532. The camera is used to acquire an image of the oil tank so that the rotation adjustment mechanism can adjust the weldment to be aligned with the oil tank according to the image.

[0105] In one embodiment of this implementation, please refer to Figures 14 to 16 The misaligned moving seat 3541 slides in conjunction with the second reference plate 351. This configuration improves the moving accuracy of the misaligned moving seat 3541, ensuring that the weldment on the second clamping structure 3531 is aligned with the first hot die head 3521, and that the second hot die head 3522 is aligned with the welding position of the oil tank.

[0106] Specifically, the direction in which the misaligned moving seat 3541 slides relative to the second reference plate 351 is perpendicular to the axis around which the second rotating mechanism 342 drives the second reference plate 351 to rotate.

[0107] Specifically, the misaligned moving seat 3541 and the second reference plate 351, the first moving seat 3543 and the misaligned moving seat 3541, and the second moving seat 3544 and the misaligned moving seat 3541 all adopt a sliding fit with guide rails and guide grooves.

[0108] In one embodiment of this implementation, please refer to Figures 14 to 16When the misaligned moving seat 3541 is in the second position, the first hot die head 3521 and the second hot die head 3522 are respectively located on both sides of the second clamping structure 3531 in the driving direction of the misaligned driving member 3542. This arrangement allows the second clamping structure 3531 to avoid the first hot die head 3521 and face the oil tank when the misaligned moving seat 3541 is in the second position, facilitating the welding of the workpiece.

[0109] In one embodiment of this implementation, please refer to Figures 14 to 16 When the misalignment moving seat 3541 is in the second position, the distance between the second clamping structure 3531 and the first hot die head 3521 and the distance between the second hot die head 3522 and the second clamping structure 3531 are equal in the driving direction of the misalignment driving member 3542. With this configuration, the position of the second clamping structure 3531 when the misalignment moving seat 3541 is in the second position coincides with the position of the second hot die head 3522 when the misalignment moving seat 3541 is in the first position, so that the weldment on the second clamping structure 3531 and the second hot die head 3522 are aligned with the welding positions of the oil tank, respectively.

[0110] In one embodiment of this implementation, please refer to Figures 14 to 16 The driving directions of the first translation drive 3523 and the second translation drive 3532 are parallel and both perpendicular to the driving direction of the misalignment drive 3542. This arrangement facilitates the heating and welding of the workpiece and the oil tank, thereby improving welding accuracy.

[0111] In this embodiment, the second y-axis drive member 311, the second x-axis drive member 321, and the second z-axis drive member 331 are all driven linearly by a motor lead screw. The first translation drive member 3523, the second translation drive member 3532, and the misalignment drive member 3542 are all driven linearly by a cylinder. The output push rod of the cylinder (not shown) is connected to the corresponding moving part.

[0112] In one embodiment of this implementation, please refer to Figure 12The back welding device 400 includes a dual-axis moving module, a second dual-axis rotating module 43, and a back welding unit 44 connected in sequence. The dual-axis moving module drives the second dual-axis rotating module 43 to move the back welding unit 44 along the x-axis and z-axis directions. The second dual-axis rotating module 43 drives the back welding unit 44 to rotate around the z-axis and an axis perpendicular to the z-axis. The back welding unit 44 is used to weld the workpiece to the back of the fuel tank. It can be understood that the dual-axis moving module can drive the second dual-axis rotating module 43 to move the back welding unit 44 along the x-axis and z-axis directions, allowing the back welding unit 44 to adapt to the welding position on the back of the fuel tank. Simultaneously, the second dual-axis rotating module 43 drives the back welding unit 44 to rotate around the z-axis and an axis perpendicular to the z-axis to adjust the workpiece to be opposite the welding position on the back. The back welding unit 44 can then weld the workpiece to this welding position. This allows for simultaneous welding of the sides and back of the fuel tank with the side welding device 300, further improving processing efficiency.

[0113] Specifically, the dual-axis movement module includes a third x-axis motion mechanism 41 and a third z-axis motion mechanism 42. The third x-axis motion mechanism 41 is mounted on the frame 100 and can drive the third z-axis motion mechanism 42, the second dual-axis rotation module 43, and the back welding unit 44 to move relative to the frame 100 along the x-axis. The third z-axis motion mechanism 42 is mounted on the third x-axis motion mechanism 41 and can drive the second dual-axis rotation module 43 and the back welding unit 44 to move relative to the third x-axis motion mechanism 41 along the z-axis. The second dual-axis rotation module 43 is mounted on the third z-axis motion mechanism 42 and can drive the back welding unit 44 to rotate relative to the third z-axis motion mechanism 42 about the z-axis and an axis perpendicular to the z-axis. This allows the back welding unit 44 to move along the x-axis and z-axis, rotate about the z-axis, and rotate about an axis perpendicular to the z-axis.

[0114] In one embodiment of this implementation, please refer to Figure 1 and Figure 12 The third x-axis motion mechanism 41 includes a third x-axis drive member 411 and a third x-axis slide block 412. The frame 100 is provided with a third x-axis slide rail 104 that slides with the third x-axis slide block 412. The third x-axis drive member 411 is mounted on the frame 100 and connected to the third x-axis slide block 412. The third z-axis motion mechanism 42 includes a third z-axis drive member 421 and a third z-axis slide block 422. The third x-axis slide block 412 is provided with a third z-axis slide rail 413 that slides with the third z-axis slide block 422. The third z-axis drive member 421 is mounted on the third x-axis slide block 412 and connected to the third z-axis slide block 422. The second dual-axis rotation mechanism is mounted on the third z-axis slide block 422. This configuration enables high-precision movement of the back welding unit 44 relative to the frame 100 in the x-axis and z-axis directions.

[0115] It should be noted that the specific structure of the back welding unit 44 in the back welding device 400 can be referenced to the side welding unit 35 in the side welding device 300, and the specific structure of the second dual-axis rotating module 43 in the back welding device 400 can be referenced to the first dual-axis rotating module 34 in the side welding device 300. Compared with the side welding unit 35, the back welding unit 44 eliminates the need for movement in the y-axis direction between itself and the frame 100. By reasonably setting the position of the universal feeding device, a suitable distance can be maintained between the back welding unit 44 and the oil tank on the universal feeding device in the y-axis direction, thus eliminating the need for movement in the y-axis direction.

[0116] The welding steps of the side welding device 300 of the welding equipment 1000 provided in this embodiment are as follows:

[0117] Step 1: The second y-axis motion mechanism 31, the second x-axis motion mechanism 32, the second z-axis motion mechanism 33 and the first dual-axis rotation module 34 cooperate to drive the side welding unit 35 to move along the y-axis, x-axis and z-axis, and rotate around the z-axis and the axis perpendicular to the z-axis, so that the side welding unit 35 is in a suitable position. At this time, the misaligned moving seat 3541 is in the first position, the second clamping structure 3531 is opposite to the first hot mold head 3521, and the second hot mold head 3522 is opposite to the welding position of the oil tank.

[0118] Step 2: The first translation drive 3523 drives the second hot die head 3522 to move to the welding position of the oil tank to heat the welding position of the oil tank to a molten state. At the same time, the second translation drive 3532 drives the second clamping structure 3531 to move the weldment to the first hot die head 3521 to heat the weldment to a molten state.

[0119] Step 3: The first translation drive 3523 drives the second hot mold head 3522 to move to separate from the oil tank. At the same time, the second translation drive 3532 drives the second clamping structure 3531 to move the weldment to separate from the first hot mold head 3521.

[0120] Step 4: The misalignment drive component 3542 drives the misalignment moving seat 3541 to move to the second position, so that the second clamping structure 3531 is opposite to the welding position of the oil tank;

[0121] Step 5: The second translation drive 3532 drives the second clamping structure 3531 to move the weldment to weld with the oil tank.

[0122] The following is a detailed description of the general feeding device and its related structures in welding equipment 1000.

[0123] Please see Figure 1 , Figure 18, Figure 19 , Figure 21 , Figure 24 and Figure 25 This invention provides a universal feeding device, which includes a frame 100, a welding worktable 500, and a transition table 600. Both the welding worktable 500 and the transition table 600 are mounted on the frame 100. The worktable 500 is installed at the center of the bottom of the frame 100 and is used to fix the oil tank. The transition table 600 is located adjacent to the worktable 500 to assist in loading and unloading the oil tank. A feeding table 700 is located adjacent to the transition table 600 to transport the oil tank after welding is completed.

[0124] The welding workbench 500 includes a base 51, a clamping mechanism 52, a locking mechanism 53, and multiple template assemblies 54. The clamping mechanism 52 includes a mounting bracket 521, a tilting drive 522, and a clamping assembly 523. The mounting bracket 521 is slidably engaged with the base 51 and can slide relative to it to a first preset position. The tilting drive 522 is mounted on the mounting bracket 521 and connected to the clamping assembly 523. The tilting drive 522 drives the clamping assembly 523 to clamp the top surface of the oil tank. The locking mechanism 53 is located on the base 51 and connected to the mounting bracket 521 to restrict the mounting bracket 521 to the first preset position. The multiple template assemblies 54 are detachably mounted on the base 51. The multiple template assemblies 54 are used to jointly support the bottom surface of the oil tank and all abut against the sides of the oil tank to restrict the horizontal movement of the oil tank relative to the base 51.

[0125] Understandably, because different fuel tanks have different sizes and shapes, the template components 54 used to fix the fuel tanks also differ. By setting multiple template components 54 to be detachably mounted on the base 51, it is possible to replace the template components 54 according to the fuel tank to adapt to the fixing of the fuel tank. In this embodiment, the number of template components 54 is three to ensure sufficient contact with the fuel tank, restrict the horizontal movement of the fuel tank, and improve the welding quality.

[0126] It is understood that the flipping drive 522 is also used to drive the clamping assembly 523 away from the top surface of the oil tank after the oil tank is welded, so that the oil tank can leave the base 51. In this embodiment, there are two sets of clamping mechanisms 52, which are arranged side by side and have the same structure.

[0127] Understandably, the locking mechanism 53 is also used to disengage from the mounting bracket 521, thereby releasing the restriction on the mounting bracket 521 and allowing it to continue moving relative to the base 51 to be adjusted to a suitable position. For example, when another type of oil tank requires welding, the locking mechanism 53 can release the restriction on the mounting bracket 521, allowing the mounting bracket 521 to move relative to the base 51 to a first preset position. This allows the clamping assembly 523 to avoid screws and other components, as well as protrusions, on the top surface of the oil tank being processed, and to apply clamping force to a suitable position, so that the oil tank is firmly fixed to the base 51 under the action of clamping force.

[0128] It should be noted that the relatively protruding structure on the bottom surface of the fuel tank can be a component such as a screw, or it can be a protruding structure of the fuel tank itself. The first preset position refers to the position of the mounting bracket 521 relative to the base 51 when it can provide a good clamping force for the clamping assembly 523. The first preset position may be different when facing different fuel tank fixing situations, and it does not refer to a fixed position.

[0129] In the welding workbench 500, multiple template components 54 are detachably mounted on the base so that the corresponding template components 54 can be installed according to the size and shape of the oil tank to limit the oil tank. At the same time, the mounting bracket 521 can drive the flipping drive component 522 and the clamping component 523 to slide relative to the base 51 to the first preset position, and the mounting bracket 521 is restricted to the first preset position by the locking structure, so that the clamping component 523 can avoid the parts and protrusions on the top surface of the oil tank and apply pressure to the appropriate position on the top surface of the oil tank, so that the oil tank is fixed to the base 51. Therefore, the welding workbench 500 can meet the fixing requirements of different oil tanks, has strong versatility, effectively reduces processing costs, and improves processing efficiency.

[0130] In one embodiment of this implementation, please refer to Figure 19 , Figure 21 and Figure 22 The clamping assembly 523 includes a connecting structure 5231, a clamping structure 5232, and a first locking member 5233. The connecting structure 5231 has an insertion hole 5201 and a first locking hole 5202 communicating with the insertion hole 5201. One end of the clamping structure 5232 is accommodated in the insertion hole 5201. The first locking member 5233 is relatively movable and engages with the first locking hole 5202, and can abut against the clamping structure 5232 to prevent the clamping structure 5232 from leaving the insertion hole 5201. Specifically, the connecting structure 5231 is connected to the tilting drive member 522, and the clamping structure 5232 is used to clamp the top surface of the oil tank.

[0131] By configuring the first locking member 5233 to be relatively movable and engaged with the first locking hole 5202, when the clamping structure 5232 needs to be installed, the clamping structure 5232 can be inserted into the insertion hole 5201, and then the first locking member 5233 can be moved relative to it to abut against the clamping structure 5232, thereby restricting the clamping structure 5232 from leaving the insertion hole 5201, thus completing the installation of the clamping structure 5232. When the clamping structure 5232 needs to be disassembled, the first locking member 5233 can be moved to separate from the clamping structure 5232, thereby releasing the restriction on the clamping structure 5232, allowing the clamping structure 5232 to leave the insertion hole 5201, thus completing the disassembly of the clamping structure 5232. This configuration makes the installation and disassembly of the clamping structure 5232 on the connecting structure 5231 more convenient, facilitating the replacement of a dedicated clamping structure 5232 to meet the fixing requirements of different oil tanks, and further improving versatility.

[0132] It is understandable that some fuel tanks have a special structure, and the position of applying pressure may not be adjusted to the correct position by sliding the mounting bracket 521 relative to the base 51. In this case, the pressure position can be adjusted to the appropriate position by replacing the clamping structure 5232 in conjunction with the relative sliding of the mounting bracket 521, so that the fuel tank can be better fixed on the base 51.

[0133] In this embodiment, the first locking member 5233 is constructed as a hand-tightening screw so that the worker can manually tighten the locking member 532 to achieve installation or removal.

[0134] In one embodiment of this implementation, please refer to Figure 19 , Figure 21 and Figure 22 The clamping structure 5232 includes a connecting rod 52321, a pressure rod 52322, and a fixing member 52323. One end of the connecting rod 52321 is accommodated in the insertion hole 5201, and the other end of the connecting rod 52321 has a slotted hole 5203. The pressure rod 52322 can move along the slotted hole 5203 to a second preset position. The fixing member 52323 connects the connecting rod 52321 and the pressure rod 52322 to limit the pressure rod 52322 to the second preset position. With this configuration, the relative position of the pressure rod 52322 and the connecting rod 52321 can be adjusted through the slotted hole 5203 and the fixing member 52323, so that the pressure rod 52322 can apply the clamping force to a reasonable position on the top surface of the oil tank.

[0135] It should be noted that the second preset position refers to the position of the mounting bracket 521 relative to the base 51 when it can provide a better clamping force for the clamping component 523. The second preset position may be different when facing different oil tank fixing, and it does not refer to a fixed position.

[0136] In this embodiment, the fixing member 52323 is constructed as two nuts, both of which are threaded into the pressure rod 52322 and located on opposite sides of the connecting rod 52321. On one hand, by rotating the two nuts, the two nuts can clamp the connecting rod 52321, thereby fixing the relative position of the pressure rod 52322 and the connecting rod 52321. On the other hand, by rotating the two nuts, the position of the pressure rod 52322 relative to the connecting rod 52321 in the z-axis direction can be adjusted to adjust the clamping force.

[0137] In one embodiment of this implementation, please refer to Figure 20 , Figure 21 and Figure 23 The locking mechanism 53 includes a fixing plate 531 and a locking member 532. The fixing plate 531 is fixed to the base 51 and has multiple connecting holes 5301. When the mounting bracket 521 slides relative to the base 51 to a first preset position, the locking member 532 can pass through the corresponding connecting hole 5301 and connect with the mounting bracket 521. This configuration allows for the restriction of the mounting bracket 521 through the locking member 532 and the fixing plate 531, resulting in a relatively simple structure and low cost.

[0138] Specifically, the locking element 532 can be connected to the mounting bracket 521 by means of snap-fit, abutment, threaded connection, etc., thereby restricting movement. In this embodiment, the locking mechanisms 53 of the two clamping structures 5232 share a fixed plate 531, and each mounting bracket 521 is fixed in position by two locking elements 532.

[0139] In one embodiment of this implementation, please refer to Figure 20 , Figure 21 and Figure 23 The mounting bracket 521 has locking holes 5204 for threaded engagement with the locking element 532. Specifically, the number of locking holes 5204 corresponds to the number of locking elements 532, with two in each case. This design allows the mounting bracket 521 to be restricted by rotating the locking element 532; the locking method is relatively simple and the operation is easy.

[0140] In this embodiment, the locking member 532 is constructed as a hand-tightening screw so that a worker can manually tighten the locking member 532 to restrict or release the restriction.

[0141] In one embodiment of this implementation, please refer to Figure 20 , Figure 21 and Figure 23The base 51 is provided with a sliding rail 511 that slidably engages with the mounting bracket 521, and the arrangement direction of the plurality of connecting holes 5301 is parallel to the extension direction of the sliding rail 511. Specifically, in order to improve guiding accuracy, two sliding rails 511 are provided, and the two sliding rails 511 jointly engage with the mounting bracket 521. By aligning the arrangement direction of the plurality of connecting holes 5301 with the extension direction of the sliding rail 511, the locking member 532 can pass through the corresponding connecting hole 5301 and connect to the mounting bracket 521.

[0142] In one embodiment of this implementation, please refer to Figure 19 and Figure 24 The template assembly 54 includes a mounting plate 541 and multiple templates 542. The multiple templates 542 are fixed on the mounting plate 541, and the mounting plate 541 is detachably connected to the base 51. With this configuration, multiple templates 542 can be replaced simultaneously by removing and installing the mounting plate 541 on the base 51, resulting in higher replacement efficiency.

[0143] In this embodiment, multiple mounting modules 542 are fixed to the mounting plate 541 by screw installation.

[0144] In one embodiment of this implementation, please refer to Figure 19 and Figure 24 The template assembly 54 includes a second locking member 543. One end of the second locking member 543 abuts against the mounting plate 541, and the other end of the second locking member 543 passes through the mounting plate 541 and engages with the base 51. This configuration allows for the assembly and disassembly of the mounting plate 541 and the base 51 through the second locking member 543. The structure is relatively simple and helps to reduce costs.

[0145] In this embodiment, the mounting plate 541 has a strip-shaped hole 5401, and the second locking member 543 is a hand-tightening screw. The head of the hand-tightening screw abuts against the side of the mounting plate 541 facing away from the base 51, and the shank of the hand-tightening screw passes through the strip-shaped hole 5401 and is threaded into the base 51, thereby realizing the installation of the mounting plate 541 and the base 51. Since the second locking member 543 is a hand-tightening screw, the worker can manually tighten the second locking member 543 to assemble and disassemble the mounting plate 541. Moreover, the existence of the strip-shaped hole 5401 ensures that the hand-tightening screw can be threaded into the base 51 after passing through, resulting in higher reliability. In this embodiment, in order to improve the relative positional accuracy of the mounting plate 541 and the base 51, the base 51 is also provided with a positioning pin that can be positioned and engaged with the mounting plate 541.

[0146] In this embodiment, there are two second locking members 543 to increase the connection strength between the mounting plate 541 and the base 51.

[0147] In one embodiment of this implementation, please refer to Figure 19 and Figure 24 The template assembly 54 includes a guide plate 545, which is mounted on the mounting plate 541 and used to guide the oil tank. It is understood that because different oil tanks have different sizes and shapes, the position and shape of the guide plate 545 will also differ. By setting the guide plate 545 on the mounting plate 541, when replacing an oil tank that needs to be fixed, the matching guide plate 545 can be replaced simultaneously by replacing the mounting plate 541, resulting in higher replacement efficiency and improved processing efficiency.

[0148] In one embodiment of this implementation, please refer to Figure 19 and Figure 24 The template assembly 54 includes a limiting rod 544, which is mounted on the mounting plate 541 and equipped with a photoelectric sensor 5441. The limiting rod 544 is used to abut against the side of the oil tank, and the photoelectric sensor 5441 is used to sense the distance to the oil tank. On the one hand, the presence of the limiting rod 544 ensures that the worker can push the oil tank into position, and the presence of the photoelectric sensor 5441 facilitates the automation of subsequent operations such as clamping by the clamping mechanism 52 after the oil tank is detected to be in position. On the other hand, since different oil tanks have different sizes and shapes, the positions of the limiting rod 544 for limiting the oil tank and the photoelectric sensor 5441 for detecting the position of the oil tank are also different. Therefore, setting the limiting rod 544 on the mounting plate 541 allows for synchronous replacement with multiple templates 542 and guide plates 545, further improving replacement efficiency and processing efficiency.

[0149] In this embodiment, there are two limiting rods 544, and each of the two limiting rods 544 is equipped with a photoelectric sensor 5441.

[0150] In one embodiment of this implementation, the welding workbench 500 further includes a lifting mechanism 57, which is mounted on the base 51. The lifting mechanism 57 supports the oil tank after it is loaded and lowers it after it is pushed into place, so that the oil tank is supported by multiple support modules 542. The lifting mechanism 57 is also used to raise the oil tank after welding is completed to facilitate unloading.

[0151] In one embodiment of this implementation, the welding workbench 500 further includes a transition rod 55 and a transition plate 56. Both the transition rod 55 and the transition plate 56 are mounted on the base 51. The transition rod 55 is used to load the oil tank from the transition table 600 to the lifting mechanism 57. The transition plate 56 is used to guide the oil tank during the loading process to prevent the oil tank from falling out during the loading process.

[0152] In one embodiment of this implementation, the welding workbench 500 further includes a plurality of material frames 58 for accommodating weldments to be welded onto the oil tank.

[0153] This invention provides a transition stage 600. Please refer to [link / reference]. Figure 18 and Figure 25 The transition platform 600 includes a base 61 and two guide rods 62. The two guide rods 62 are parallel and adjustable in relative distance on the base 61. The two guide rods 62 are used to jointly support the bottom surface of the oil tank, allowing the oil tank to slide along the guide rods 62. Each guide rod 62 has a clearance groove 6201, which is used to avoid relatively protruding structures on the bottom surface, so that the oil tank can enter or leave the base 51 along the arrangement direction of the two guide rods 62.

[0154] In this embodiment, there are two transition platforms 600, which are arranged opposite each other in the x-axis direction and have a gap between them, which is the loading / unloading area. The welding worktable 500 is located adjacent to the loading / unloading area in the y-axis direction. One of the two transition platforms 600 is used for loading the oil tank, and the other is used for unloading the oil tank. In this embodiment, the general feeding device also includes a feeding platform 700, which is located on one side of the unloading transition platform 600 in the y-axis direction.

[0155] In other embodiments, the transition table 600 may be provided in a single manner to perform one of the functions of loading and unloading, or to perform both functions of loading and unloading simultaneously.

[0156] Specifically, both the base 51 and the base 61 are fixed on the frame 100 to ensure that the base 51 and the base 61 have good relative positional accuracy, which is beneficial to improving the reliability of feeding.

[0157] In this embodiment, the extension direction of the guide rod 62 is parallel to the x-axis direction, and the arrangement direction of the two guide rods 62 is the y-axis direction, that is, the two guide rods 62 are spaced apart and arranged parallel to each other in the y-axis direction. During the feeding process, the worker first places the oil tank at the initial end of the guide rod 62 and pushes the oil tank to the end along the x-axis direction. At this time, the relatively protruding structure on the bottom surface of the oil tank corresponds to the position of the clearance groove 6201 (relative to each other in the y-axis direction), so that when the worker pushes the oil tank along the y-axis direction, the protruding structure can pass through the clearance groove 6201, so that the oil tank can leave the guide rod 62 and enter the base 51 of the welding workbench 500. During the unloading process, after the oil tank is welded on the welding workbench 500, the worker pushes the oil tank to move along the y-axis. At this time, the relatively protruding structure on the bottom surface of the oil tank corresponds to the position of the clearance groove 6201 (relative in the y-axis direction), so that the oil tank can move smoothly onto the two guide rods 62 and make the protruding structure and the guide rods 62 misaligned. The worker pushes the oil tank to move along the x-axis, so that the oil tank can slide along the guide rods 62 and leave.

[0158] In the transition table 600, the distance between the two guide rods 62 can be adjusted to ensure that the guide rods 62 can avoid the relatively protruding structures on the bottom surface of the oil tank during the sliding process of the oil tank along the guide rods 62, and that the clearance grooves 6201 on the guide rods 62 can allow the relatively protruding structures on the bottom surface of the oil tank to pass through after the oil tank moves along the guide rods 62. This allows the oil tank to leave the guide rods 62 along the arrangement direction of the two guide rods 62 and enter or leave the base 51. Therefore, the transition table 600 can meet the feeding requirements of different oil tanks, has strong versatility, effectively reduces processing costs, and improves processing efficiency.

[0159] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 26 The base 61 is provided with a guide structure 611, and at least one guide rod 62 is slidably engaged with the guide structure 611. The guide rod 62 is provided with a limiting structure 621, which can be connected to the guide structure 611 to limit the sliding of the guide rod 62. With this configuration, the guide rod 62 and the base 61 can be relatively fixed by the limiting structure 621.

[0160] In this embodiment, both guide rods 62 are slidably engaged with the guide structure 611 and are each provided with a limiting structure 621 so that the positions of the two guide rods 62 on the base 61 are adjustable, thereby improving versatility.

[0161] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 26 The limiting structure 621 includes a connecting block 6211, a clamping block 6212, and a driving member 6213. The connecting block 6211 is connected to the guide rod 62. One end of the clamping block 6212 is connected to the connecting block 6211 and surrounds the guide structure 611 with the connecting block 6211. The other end of the clamping block 6212 is connected to the connecting block 6211 via the driving member 6213. The driving member 6213 is used to drive the other end closer to the connecting block 6211, so that the connecting block 6211 and the clamping block 6212 cooperate to clamp the guide structure 611. With this configuration, the driving member 6213 can drive the connecting block 6211 and the clamping block 6212 to clamp the guide structure 611, thereby limiting the sliding of the guide rod 62 on the guide structure 611. At the same time, the driving member 6213 can also drive the connecting block 6211 and the clamping block 6212 to release the guide structure 611, thereby releasing the sliding restriction on the guide rod 62. The structure is relatively simple and helps to reduce costs.

[0162] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 26One end of the driving component 6213 abuts against the clamping block 6212, and the other end of the driving component 6213 passes through the clamping block 6212 and is threaded into the connecting block 6211. With this configuration, the restriction or release can be achieved by rotating the driving component 6213, which is relatively simple to operate and highly efficient.

[0163] In this embodiment, the drive component 6213 is constructed as a hand-tightening screw so that a worker can manually tighten the drive component 6213 to achieve or remove the restriction.

[0164] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 26 To improve guiding accuracy, the guide structure 611 includes two parallel and spaced-apart slide rods 6111, and the guide rod 62 is provided with two sliders 622 that slide in cooperation with the corresponding slide rods 6111. Specifically, the connecting block 6211 is fixed on the slider 622, so that the limiting structure 621 can slide synchronously with the guide rod 62.

[0165] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 27 The guide rod 62 includes a detachably connected guide portion 613 and a clearance portion 614, which together form a clearance groove 6201. With this configuration, the shape of the clearance groove 6201 can be adjusted by replacing the clearance portion 614, so as to help the clearance groove 6201 avoid the protruding structure on the bottom surface of the fuel tank.

[0166] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 27 To improve the overall structural strength of the two guide rods 62, the clearance portions 614 of the two guide rods 62 are connected and fixed through the connecting portion 615. It is understandable that, since the two clearance portions 614 are connected and fixed through the connecting portion 615, when adjusting the distance between the two guide rods 62, the clearance portion 614 needs to be removed first. After adjustment, the other suitable clearance portion 614 is installed. This design facilitates adjustment of the clearance groove 6201 while ensuring the overall structural strength of the two guide rods 62.

[0167] In one embodiment of this implementation, please refer to Figure 18 , Figure 25 and Figure 27To ensure that the guide portion 613 and the clearance portion 614 can jointly support the bottom surface of the oil tank, the top sides of the guide portion 613 and the clearance portion 614 are flush. In one embodiment of this implementation, the transition platform 600 includes a stop bar 63, which is connected to the guide rod 62 and is used to abut against the side of the oil tank to prevent the oil tank from falling off the guide rod 62. This arrangement can prevent the oil tank from falling off the side of the stop bar 63, improving the safety of loading. To adapt to the anti-fall requirements of different oil tanks, the distance between the stop bar 63 and the guide rod 62 is adjustable in the arrangement direction. In this embodiment, the stop bar 63 is provided with an adjustment structure 631, which allows the distance between the stop bar 63 and the guide rod 62 to be adjusted.

Claims

1. A welding apparatus characterized by comprising: The utility model relates to a welding device for oil tank, comprising: a rack; a plurality of top surface welding devices are installed in the rack, each of the top surface welding devices comprises a first three-axis movement module, a first z-axis rotating mechanism and a top surface welding unit connected in sequence, the first three-axis movement module is used to drive the first z-axis rotating mechanism to drive the top surface welding unit to move along the x-axis direction, the y-axis direction and the z-axis direction, the first z-axis rotating mechanism is used to drive the top surface welding unit to rotate around the z-axis, and the top surface welding unit is used to weld a welding piece to the top surface of an oil tank, wherein the top surface welding unit comprises a first reference plate, a first hot die assembly and a first fixing assembly, the first reference plate is connected with the first z-axis rotating mechanism, the first fixing assembly comprises a welding driving piece and a first clamping structure for clamping the welding piece, the welding driving piece is installed on the first reference plate and connected with the first clamping structure, and the first hot die assembly comprises a hot die driver and a double-sided hot die head, the hot die driver is installed on the first reference plate and connected with the double-sided hot die head; the hot die driver is used to drive the double-sided hot die head to move to the bottom side of the first clamping structure, so that the top side of the double-sided hot die head is opposite to the welding piece in the z-axis direction, and the hot die driver is also used to drive the double-sided hot die head to abut against the oil tank, and the welding driving piece is used to drive the first clamping structure to drive the welding piece to move along the z-axis direction, so that the welding piece abuts against the double-sided hot die head or the oil tank, the first clamping structure comprises a sliding plate and a chuck, the sliding plate is in sliding fit with the first reference plate and connected with the welding driving piece, the chuck comprises a first fixed block, a first quick release block, a second quick release block, a first rotating block and a first clamping body connected in sequence, wherein the first fixed block is fixedly connected with the sliding plate, the first quick release block and the second quick release block are connected through clamping fit, the first rotating block has a plurality of installation positions with the second quick release block, and the relative angle of the first rotating block and the second quick release block around the z-axis is different at different installation positions; a side surface welding device is installed in the rack, the side surface welding device comprises a second three-axis movement module, a first double-axis rotating module and a side surface welding unit connected in sequence, the second three-axis movement module is used to drive the first double-axis rotating module to drive the side surface welding unit to move along the x-axis direction, the y-axis direction and the z-axis direction, the first double-axis rotating module is used to drive the side surface welding unit to rotate around the z-axis and an axis perpendicular to the z-axis, and the side surface welding unit is used to weld a welding piece to the side surface of the oil tank.

2. The welding apparatus of claim 1, wherein, The first z-axis rotating mechanism comprises a z-axis rotating driver and a rotating seat, the z-axis rotating driver is installed on the first three-axis moving module, the rotating seat is relatively rotatably installed on the first three-axis moving module, the top surface welding unit is installed on the rotating seat, the z-axis rotating driver is provided with a first gear, the rotating seat is provided with a second gear, the first gear and the second gear are engaged, and the number of teeth of the first gear is less than the number of teeth of the second gear.

3. The welding apparatus of claim 1, wherein, The thermal die driver comprises a first thermal die driver and a second thermal die driver, the first thermal die driver is installed on the first reference plate and connected with the second thermal die driver, the double-sided thermal die head is arranged on the second thermal die driver, and the first thermal die driver and the second thermal die driver are used for cooperating to drive the double-sided thermal die head to move in the direction of the z-axis and the direction perpendicular to the z-axis.

4. The welding apparatus of claim 1, wherein, The first double-axis rotating module comprises a first rotating mechanism and a second rotating mechanism, the first rotating mechanism comprises a first rotating driver and a first connecting seat, the first connecting seat is rotatably installed on the second three-axis moving module, the first rotating driver is installed on the second three-axis moving module and connected with the first connecting seat, the second rotating mechanism comprises a second rotating driver and a second connecting seat, the second connecting seat is relatively rotatably installed on the first connecting seat along an axis perpendicular to the z-axis, the second rotating driver is installed on the first connecting seat and connected with the second connecting seat, and the side surface welding unit is arranged on the second connecting seat.

5. The welding apparatus of claim 1, wherein, The side surface welding unit comprises a second reference plate, a second thermal die assembly and a second fixing assembly, the second reference plate is connected with the first double-axis rotating module, the second thermal die assembly and the second fixing assembly are both installed on the second reference plate, the second thermal die assembly comprises a first thermal die head, a second thermal die head and a first translation driver, the first thermal die head is fixed on the second reference plate, the first translation driver is arranged on the second reference plate and connected with the second thermal die head, the first translation driver is used for driving the second thermal die head to move to abut against the oil tank, and the second fixing assembly comprises a second clamping structure and a second translation driver, the second translation driver is arranged on the second reference plate and connected with the second clamping structure, and the second translation driver is used for driving the second clamping structure to move to abut against the first thermal die head and the oil tank respectively.

6. The welding apparatus of claim 5, wherein, The side welding unit comprises a misalignment driving mechanism, the misalignment driving mechanism comprises a misalignment moving seat and a misalignment driving member, the first translation driving member and the second translation driving member are arranged on the misalignment moving seat, the misalignment driving member is arranged on the second reference plate and connected with the misalignment moving seat, and the misalignment driving member is used to drive the misalignment moving seat to move between a first position and a second position; when the misalignment moving seat is located at the first position, the second clamping structure is opposite to the first hot die head, and the second hot die head is opposite to the welding position of the oil tank; when the misalignment moving seat is located at the second position, the second clamping structure is opposite to the welding position of the oil tank.

7. The welding apparatus of claim 5, wherein, The second clamping structure is provided with a rotation adjusting mechanism and a camera, and the camera is used to acquire an image of the oil tank, so that the rotation adjusting mechanism can adjust the welding piece on the second clamping structure to be aligned with the oil tank according to the image.

8. The welding apparatus of claim 1, wherein, The welding equipment comprises a welding workbench and a transition table fixed on the rack, the welding workbench comprises a base, a pressing mechanism and a locking mechanism, the pressing mechanism comprises a mounting bracket, a turnover driving member and a pressing assembly, the mounting bracket is in sliding fit with the base and can slide to a first preset position, the turnover driving member is installed on the mounting bracket and connected with the pressing assembly, and the turnover driving member is used to drive the pressing assembly to press the top surface of the oil tank, and the locking mechanism is arranged on the base and connected with the mounting bracket to limit the mounting bracket at the first preset position. The transition table comprises a base and two guide rods, the two guide rods are arranged on the base in parallel and with adjustable distance, the two guide rods are used to support the bottom surface of the oil tank together to enable the oil tank to slide along the guide rods, and the two guide rods are both provided with an avoiding slot, the avoiding slot is used to avoid the structure protruding from the bottom surface, so that the oil tank can enter or leave the base along the arrangement direction of the two guide rods.

9. The welding apparatus of claim 1, wherein, The welding equipment comprises a back welding device, the back welding device comprises a double-shaft moving module, a second double-shaft rotating module and a back welding unit connected in sequence, the double-shaft moving module is used to drive the second double-shaft rotating module to drive the back welding unit to move along the x-axis direction and the z-axis direction, the second double-shaft rotating module is used to drive the back welding unit to rotate around the z-axis and an axis perpendicular to the z-axis, and the back welding unit is used to weld a welding piece to the back surface of the oil tank.

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