A welding device for aircraft component production

Abstract

The application relates to the technical field of welding, and discloses a welding device for aircraft part production, which comprises a base and a support frame. An electric arc welding mechanism is fixedly installed on the upper surface of the base. The electric arc welding mechanism comprises a mechanical arm and an electric arc welding assembly. The fixed end of the mechanical arm is fixedly connected to the base, and the movable end is fixedly connected to the electric arc welding assembly. The support frame is located on the upper surface of the base and is driven to move horizontally along the length direction of the base. The first vacuum adsorption assembly is arranged to realize self-adaptive fitting of the empty pipe of the auxiliary oil tank. The non-contact first vacuum adsorption box is driven to bend synchronously through the single-side overturning hinge, so that the curvature matched with the surface of the workpiece is formed, all the suction cups are ensured to fully contact the curved surface, the contact area between the clamping surface of the limiting mechanism and the outer side surface of the welding workpiece is increased through the means that the suction cups adsorb the outer side surface of the welding workpiece, and therefore the stability and reliability of the adsorption fixation are improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically, to a welding apparatus for the production of aircraft parts. Background Technology

[0002] Aircraft contain many components, including wings, tail sections, and auxiliary fuel tanks. Auxiliary fuel tanks are streamlined fuel tanks mounted under the fuselage or wings, wider in the middle and tapering at both ends. These tanks increase the aircraft's range and endurance. During the production of auxiliary fuel tanks, due to their internal cavities and streamlined outer shape, they cannot be formed by stamping. Furthermore, because of their large size, auxiliary fuel tanks are typically manufactured using segmented arc welding. Arc welding is essentially a process of converting electrical energy into heat energy, thereby achieving atomic bonding between metal parts. Therefore, compared to other welding methods such as laser welding and argon arc welding, arc welding is suitable for most metal workpieces and offers advantages such as low production costs and low maintenance costs. Consequently, existing aircraft auxiliary fuel tanks are typically manufactured using arc welding components. When welding existing workpieces, most require clamps to limit and fix the workpieces to ensure their stability during the welding process. Most existing welding clamps are three-jaw chucks or four-jaw chucks. When these clamps are used to limit and fix the auxiliary fuel tank before welding, the auxiliary fuel tank has a "bullet-shaped" structure, meaning its external contour is streamlined. The clamping surface of the traditional clamp cannot fully fit against the surface of the auxiliary fuel tank, resulting in point contact or line contact between the clamping surface and the surface of the auxiliary fuel tank. The contact area between the two is small, making it impossible for the traditional clamp to effectively fix the auxiliary fuel tank. Secondly, since the auxiliary fuel tank is hollow inside, the rigid clamping of the auxiliary fuel tank by the traditional clamp may also cause the surface of the auxiliary fuel tank to collapse, thereby affecting the overall flow structure of the auxiliary fuel tank and its normal use. Summary of the Invention

[0003] This invention provides a welding device for the production of aircraft parts, which solves the technical problems of unstable clamping when traditional fixtures clamp and limit the aircraft auxiliary fuel tank, and the collapse of the outer surface of the aircraft auxiliary fuel tank.

[0004] This invention provides a welding device for aircraft parts production, including a base and a support frame. An arc welding mechanism is fixedly installed on the upper surface of the base. The arc welding mechanism includes a robotic arm and an arc welding assembly. The fixed end of the robotic arm is fixedly connected to the base, and the movable end is fixedly connected to the arc welding assembly. The support frame is located on the upper surface of the base and is driven to move horizontally along the length of the base. A rotating assembly and a limiting cover are installed on the support frame. The rotating assembly is used to drive the limiting cover to rotate on the support frame. A first vacuum adsorption assembly and a welding workpiece are installed inside the limiting cover. The first vacuum adsorption assembly is used to adsorb and fix the welding workpiece inside the limiting cover. The first vacuum adsorption assembly includes several cylinders 2 fixedly installed on the outside of the limiting cover. Several first vacuum adsorption boxes are provided inside the limiting cover. The several first vacuum adsorption boxes are distributed in a circular shape at equal intervals around the periphery of the welding workpiece. The output shaft of the cylinder 2 passes through the limiting cover, and one end of the cylinder 2 extending into the limiting cover is rotatably connected to the connecting frame. The bottom end of the connecting frame is fixedly connected to the first vacuum adsorption box. A suction cup is fixedly connected to the side of the first vacuum adsorption box near the welding workpiece. The first vacuum adsorption box is connected to a vacuum pump through a pipe.

[0005] In a preferred embodiment, a drive assembly is mounted on the base, and a horizontal slide groove is formed on the upper surface of the base. The groove direction of the horizontal slide groove is consistent with the length direction of the base. The drive assembly is connected to the support frame and is used to drive the support frame to move along the groove direction of the horizontal slide groove.

[0006] In a preferred embodiment, the drive assembly includes a horizontal slide block and an auxiliary slide rod. Both the horizontal slide block and the auxiliary slide rod are located inside the horizontal slide groove and form a sliding guide engagement with the horizontal slide groove. The horizontal slide block is sleeved on the outer wall of the auxiliary slide rod and is slidably connected to the auxiliary slide rod. The other end of the auxiliary slide rod is fixedly connected to the groove wall of the horizontal slide groove. A drive component is fixedly installed on the base, and the output end of the drive component is fixedly connected to the support frame.

[0007] In a preferred embodiment, the rotating assembly includes two fixed ring rails fixedly connected to the top of the support frame. The fixed ring rails are sleeved on the outer wall of the limiting cover and rotatably connected to the limiting cover. A toothed ring is fixedly connected to one end of the limiting cover. A rotary motor is fixedly installed on the outer wall of the fixed ring rails. A gear that meshes with the toothed ring is installed at the output end of the rotary motor.

[0008] In a preferred embodiment, a second vacuum adsorption assembly is rotatably mounted on one side of the first vacuum adsorption box. The second vacuum adsorption assembly includes a plurality of second vacuum adsorption boxes, one of which is rotatably connected to one side of the first vacuum adsorption box. The other plurality of adjacent second vacuum adsorption boxes are rotatably connected to each other and communicate with each other. The second vacuum adsorption boxes are communicated with the first vacuum adsorption box through connecting pipes.

[0009] In a preferred embodiment, the limiting cover is further provided with a storage cover inside. One end of the storage cover is fixedly connected to the output end of the second cylinder, and the storage cover is located on the side of the first vacuum adsorption box close to the second vacuum adsorption box.

[0010] In a preferred embodiment, the second vacuum adsorption box is located inside the storage cover, and a clamping plate is installed inside the storage cover. The clamping plate is located on both sides of the second vacuum adsorption box, and the two sets of clamping plates are driven to move closer or further apart from each other along the width direction of the second vacuum adsorption box.

[0011] In a preferred embodiment, a cylinder three is fixedly installed on the outer side of the storage cover. The output end of the cylinder three passes through the storage cover and is fixedly connected to the clamping plate. A stabilizing slide rod is provided on one side of the two clamping plates that are far apart from each other. One end of the stabilizing slide rod is fixedly connected to the clamping plate, and the other end passes through and is slidably connected to the storage cover.

[0012] In a preferred embodiment, a limiting component is provided at the top of the storage cover. The limiting component includes a cylinder four, which is fixedly connected to the connecting frame. A limiting rod is slidably connected to the upper surface of the storage cover. One end of the limiting rod is fixedly connected to the output shaft of the cylinder four. A limiting block is installed on the side of the limiting rod. A limiting seat is fixedly installed on the upper surface of the second vacuum adsorption box. A connecting window is opened on the surface of the storage cover.

[0013] In a preferred embodiment, the limiting seat passes through the storage cover through the connecting window and extends out of the storage cover. One end of the limiting seat extending out of the storage cover and the side near the limiting rod are provided with a limiting groove. The limiting block is located in the limiting groove and forms a limiting abutment with the limiting groove.

[0014] The beneficial effects of this invention are as follows: 1. This invention achieves adaptive fitting of the empty tube of the auxiliary fuel tank by setting the first vacuum adsorption component. It drives the first vacuum adsorption box that is not in contact to bend synchronously through the single-sided flip hinge to form an arc that matches the surface of the workpiece, ensuring that all suction cups are in full contact with the curved surface. By adsorbing the outer surface of the welding workpiece with suction cups, the contact area between the clamping surface of the limiting mechanism and the outer surface of the welding workpiece is increased, thereby improving the stability and reliability of adsorption and fixation. In addition, the limiting method of vacuum adsorption can also avoid the local collapse of the outer surface of the auxiliary fuel tank caused by traditional clamping tools when clamping the streamlined outer wall of the aircraft auxiliary fuel tank.

[0015] 2. This invention achieves adaptive fitting of the streamlined auxiliary oil tank empty pipe through the setting of the second vacuum adsorption component. The second vacuum adsorption box, which is connected by hinges and rotates with each other, hangs down due to its own gravity, causing the remaining second vacuum adsorption boxes that are not in contact to bend synchronously through the single-sided flip hinge, forming an arc that matches the workpiece surface. This ensures that all suction cups are in full contact with the curved surface. At the same time, the second vacuum adsorption boxes in the same group are interconnected through connecting pipes and share an electrically controlled air valve. If any suction cup fails to complete adsorption, the overall adsorption will fail. This reduces the difficulty of synchronous verification of multiple suction cups, avoids workpiece positioning deviation caused by poor local fitting, and improves the stability and reliability of adsorption fixation. Furthermore, the addition of an electromagnet makes the fit between the second vacuum adsorption box and the surface of the welded workpiece more compact and tight.

[0016] 3. This invention addresses the scratching problem caused by the bending of the vacuum adsorption component due to its own weight when it is stationary by setting a limiting component. The second vacuum adsorption component ensures the horizontality of the initial state through a mechanical limiting mechanism. The protruding part of the storage limiting rod is fitted with the limiting seat at the top of the first vacuum adsorption box, keeping the hinged adsorption box in a horizontal state. During operation, the limiting rod is released by pulling it with a cylinder. After adsorption is completed, the adsorption box automatically returns to its position and relocks by means of the one-way flip hinge and the cylinder reset function. This avoids the unintended contact between the adsorption box and the workpiece surface during the manual calibration stage, eliminates the risk of scratches, and ensures the surface quality of the workpiece.

[0017] 4. This invention achieves efficient linkage between workpiece positioning and welding through the arrangement of a support frame assembly and a rotating assembly, with multiple components working together. The support frame assembly uses a motor-driven transmission screw to move the workpiece precisely along a horizontal slide, and works in conjunction with an auxiliary slide rod to ensure the stability of the docking process. The rotating assembly uses gear transmission to drive the limit cover to rotate circumferentially, so that the welding surface can be completely exposed under the arc welding assembly, eliminating the need for manual workpiece flipping. This design transforms the complex process of traditional manual alignment and flipping into automated operation, reducing errors caused by human intervention. At the same time, it is adaptable to the welding needs of auxiliary oil tanks of different sizes and shapes, greatly improving production efficiency and process adaptability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the auxiliary slide bar structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the toothed ring structure in the rotating assembly of the present invention.

[0021] Figure 4 This is a schematic diagram of the storage cover structure in the second vacuum adsorption component of the present invention.

[0022] Figure 5 This is a schematic diagram of the stabilizing slide bar structure in the second vacuum adsorption assembly of the present invention.

[0023] Figure 6 This is a side sectional view of the storage cover of the present invention.

[0024] Figure 7 This is a schematic diagram of the limiting seat structure in the limiting component of the present invention.

[0025] Figure 8 This is a schematic diagram of the top cross-sectional structure of the first vacuum adsorption box of the present invention.

[0026] Figure 9 This is a schematic diagram of the suction cup structure in the first vacuum adsorption component of the present invention.

[0027] In the diagram: 1. Base; 2. Arc welding mechanism; 3. Robotic arm; 4. Arc welding assembly; 5. Horizontal slide; 6. Support frame; 61. Horizontal slide block; 62. Auxiliary slide rod; 7. Rotating assembly; 71. Fixed ring rail; 72. Gear ring; 73. Rotary motor; 74. Gear; 8. Limiting cover; 9. First vacuum adsorption assembly; 91. Cylinder II; 92. Connecting frame; 93. First vacuum adsorption box; 94. Suction cup; 95. Connecting pipe; 10. Second vacuum adsorption assembly; 1001. Second vacuum adsorption box; 1002. Storage cover; 1003. Clamping plate; 1004. Cylinder three; 1005. Stabilizing slide bar; 11. Limiting assembly; 1101. Cylinder four; 1102. Limiting rod; 1103. Limiting block; 1104. Connecting window; 1105. Limiting seat; 1106. Limiting groove; 12. Electromagnet; 13. Vacuum pump. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] like Figure 1 , Figure 2 , Figure 7 , Figure 8 and Figure 9 As shown, the invention aims to solve the technical problems of unstable clamping when using traditional clamps to hold and limit aircraft auxiliary fuel tanks, and the resulting collapse on the outer surface of the aircraft auxiliary fuel tanks.

[0030] This invention provides a welding device for aircraft parts production, including a base 1 and a support frame 6. An arc welding mechanism 2 is fixedly installed on the upper surface of the base 1. The arc welding mechanism 2 includes a robotic arm 3 and an arc welding assembly 4. The fixed end of the robotic arm 3 is fixedly connected to the base 1, and the movable end is fixedly connected to the arc welding assembly 4. The support frame 6 is located on the upper surface of the base 1 and is driven to move horizontally along the length direction of the base 1. A rotating assembly 7 and a limiting cover 8 are installed on the support frame 6. The rotating assembly 7 is used to drive the limiting cover 8 to rotate on the support frame 6. A first vacuum adsorption assembly 9 and a welding workpiece are installed inside the limiting cover 8. The first vacuum adsorption assembly 9 is used to adsorb and fix the welding workpiece inside the limiting cover 8. The first vacuum adsorption assembly 9 includes several cylinders 91 fixedly installed on the outside of the limiting cover 8. Several first vacuum adsorption boxes 93 are provided inside the limiting cover 8. The first vacuum adsorption boxes 93 are distributed in a circular shape at equal intervals around the welded workpiece. The output shaft of the cylinders 91 passes through the limiting cover 8, and one end of the cylinders 91 extending into the limiting cover 8 is rotatably connected to the connecting frame 92. The bottom end of the connecting frame 92 is fixedly connected to the first vacuum adsorption box 93. The side of the first vacuum adsorption box 93 closest to the welded workpiece is fixedly connected to the suction cup 94. The first vacuum adsorption box 93 is connected to the vacuum pump 13 through a pipe.

[0031] It should be further noted that a drive assembly is installed on the base 1, and a horizontal groove 5 is formed on the upper surface of the base 1. The groove direction of the horizontal groove 5 is consistent with the length direction of the base 1. The support frame 6 is slidably connected to the base 1 through the horizontal groove 5. The arc welding assembly 4 includes a welding torch unit and a wire feeding unit. The welding torch unit is used to conduct electricity to the welding wire, and the wire feeding unit is used to feed the welding wire from the bottom end of the arc welding assembly 4. This arc welding assembly 4 is prior art and will not be described in detail. The drive assembly is connected to the support frame 6, and the drive assembly is used to drive the support frame 6 to move along the groove direction of the horizontal groove 5. In this embodiment, the drive assembly can... As a linear drive mechanism such as an electric push rod or lead screw assembly, the limiting cover 8 is a hollow cylindrical structure with open ends. The rotating component 7 is used to drive the limiting cover 8 to rotate on the support frame 6. In this embodiment, the rotating component 7 can be a rotating drive mechanism such as a motor or a rotary cylinder. Multiple cylinders 91 and the first vacuum adsorption box 93 are provided, and they correspond one-to-one. The suction cup 94 is made of flexible silicone or rubber material to improve the sealing performance of the first vacuum adsorption box 93 after contact with the welding workpiece. Secondly, in this embodiment, the welding workpiece is the end cap or pipe part that makes up the auxiliary oil tank. Therefore, if Figure 1As shown, the support frame 6, rotating assembly 7, limiting cover 8, and first vacuum adsorption assembly 9 are each provided in two sets. The end cap and the pipe are located in the two sets of limiting covers 8 respectively. In actual use, the workpiece to be welded is placed inside the limiting cover 8 manually. Then, the first vacuum adsorption box 93 is moved radially within the limiting cover 8 by the stretching of the output shaft of multiple cylinders 91, that is, moved towards the side closer to the workpiece, until the first vacuum adsorption box 93 is pressed and adhered to the surface of the workpiece. At this time, the suction cup 94 deforms and fills the space between the first vacuum adsorption box 93 and the workpiece. In the gap between them, a sealing strength is provided. Then, the air in the first vacuum adsorption box 93 is evacuated by the external vacuum pump 13 and pipeline, so that the welding workpiece is attached to each first vacuum adsorption box 93. Under the support and adsorption of multiple first vacuum adsorption boxes 93, the welding workpiece is adsorbed and fixed. When the welding workpiece is fixed by limiting it using the principle of vacuum adsorption, the problem of internal depression caused by traditional rigid clamps is avoided. Then, the two support frames 6 located on both sides of the top of the base 1 are driven by the drive component to move along the length of the base 1. The drive assembly moves the two limiting covers 8, which are mounted on the support frame 6, to a position where the auxiliary oil tank head and auxiliary oil tank tube of the welding workpiece are respectively located. When the drive assembly moves the two limited auxiliary oil tank heads and auxiliary oil tank tubes to a position where they are in contact, the robotic arm 3 drives the arc welding assembly 4 mounted on its movable end to move downwards until the welding wire approaches the top of the welding joint of the welding workpiece. At this time, the arc welding assembly 4 will energize the metal welding wire held by it through electrical energy. After the welding wire contacts the outer surface of the joint between the auxiliary oil tank head and the tube, the welding wire end... An electric arc discharge is generated, followed by high temperature, which melts the outer surface of the welding wire end and the junction of the auxiliary oil tank head and the tube, forming a molten pool. After cooling and crystallization, the two separate auxiliary oil tank heads and the junction of the tube are permanently connected at the atomic level, thus achieving welding at the junction of the auxiliary oil tank head and the tube. Then, the rotating component 7 drives the limiting cover 8 to rotate, thereby driving the welding component that is fixed inside the limiting cover 8 to rotate, so that the welding joint of the welding component can pass under the arc welding component 4 at a uniform speed through rotation, achieving uniform welding of the welding joint of the workpiece.

[0032] In optional embodiments, such as Figure 1 and Figure 2 As shown, preferably, the drive assembly includes a horizontal slide block 61 and an auxiliary slide rod 62. Both the horizontal slide block 61 and the auxiliary slide rod 62 are located inside the horizontal slide groove 5 and form a sliding guide engagement with the horizontal slide groove 5. The horizontal slide block 61 is sleeved on the outer wall of the auxiliary slide rod 62 and is slidably connected to the auxiliary slide rod 62. The other end of the auxiliary slide rod 62 is fixedly connected to the groove wall of the horizontal slide groove 5. A drive component is fixedly installed on the base 1, and the output end of the drive component is fixedly connected to the support frame 6.

[0033] It should be further explained that the two support frames 6 can be driven by the drive component to move closer and further away along the length of the base 1. The central axes of the multiple auxiliary slide rods 62 are on the same horizontal plane. The horizontal slide block 61 moves horizontally on the outer surface of the auxiliary slide rods 62 through the drive component. The drive component can be a linear drive device such as a cylinder or a horizontal motor. In actual use, the drive component drives the support frame 6 to move and drives the horizontal slide block 61 to move horizontally on the outer surface of the auxiliary slide rods 62. This allows the welded workpiece that is limited and fixed to have sufficient spacing for adjustment before welding, thus making the fixing process of the welded workpiece more flexible and convenient.

[0034] In optional embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, preferably, the rotating assembly 7 includes two fixed ring rails 71 fixedly connected to the top of the support frame 6. The fixed ring rails 71 are sleeved on the outer wall of the limiting cover 8 and rotatably connected to the limiting cover 8. A toothed ring 72 is fixedly connected to one end of the limiting cover 8. A rotary motor 73 is fixedly installed on the outer wall of the fixed ring rails 71. A gear 74 that meshes with the toothed ring 72 is installed at the output end of the rotary motor 73.

[0035] It should be further explained that the fixed ring rail 71 is fixedly connected to the top of the support frame 6, and the central axes of the two fixed ring rails 71 on the same support frame 6 coincide. The inner diameters of the two fixed ring rails 71 are the same, and the outer diameters of the two fixed ring rails 71 are also the same. Bearings are fixedly installed on the inner wall of the fixed ring rail 71. The inner ring of the bearing is fixedly connected to the outer wall of the limiting cover 8, and the outer ring of the bearing is fixedly connected to the inner wall of the fixed ring rail 71. The limiting cover 8 is rotatably connected to the fixed ring rail 71 through the bearing. In actual use, the rotary motor 73 will drive the gear 74 fixedly connected to its transmission end to rotate, and the gear 74 will drive the limiting cover 8 to rotate. The toothed ring 72 fixedly connected to the end of the positioning cover 8 rotates, which in turn drives the limiting cover 8 fixedly connected to it to rotate. The limiting cover 8 rotates under the limitation of two fixed ring rails 71. Since there is a bearing sleeved between the connection between the limiting cover 8 and the fixed ring rails 71, the resistance encountered by the limiting cover 8 during rotation can be minimized, making the rotation process smoother and avoiding the situation where the two welding workpieces rotate asynchronously due to jamming during rotation. Through the setting of the rotating component, the welding workpiece that is limited and fixed can rotate during the welding process, making the welding process faster and more convenient.

[0036] In the above embodiments, such as Figure 7 , Figure 8 and Figure 9As shown, multiple first vacuum adsorption boxes 93 are located on the same vertical plane. Because the existing welding workpiece, i.e., the auxiliary oil tank, is large in volume, and the end cap and pipe sections of the auxiliary oil tank are streamlined and long, it is difficult for the first vacuum adsorption boxes 93 on the same vertical plane to limit and fix a long welding workpiece. This results in poor stability of the welding workpiece during the welding process, and it is prone to tilting during horizontal movement and rotation, causing the two sets of welding workpieces to intersect, thus affecting the normal welding operation of the auxiliary oil tank. Therefore, in another embodiment of the present invention, the welding device further includes a second vacuum adsorption assembly 10, which includes multiple second vacuum adsorption boxes 1001, one of which is rotatably connected to... A first vacuum adsorption box 93 is attached to one side of the first vacuum adsorption box 93. Several adjacent second vacuum adsorption boxes 1001 are rotatably connected and interconnected with each other. The second vacuum adsorption boxes 1001 are interconnected with the first vacuum adsorption box 93 through connecting pipes 95. The limiting cover 8 is also provided with a storage cover 1002. One end of the storage cover 1002 is fixedly connected to the output end of the cylinder 2 91. The storage cover 1002 is located on the side of the first vacuum adsorption box 93 near the second vacuum adsorption box 1001. The second vacuum adsorption box 1001 is located inside the storage cover 1002. A clamping plate 1003 is installed inside the storage cover 1002. The clamping plate 1003 is located on both sides of the second vacuum adsorption box 1001. The two sets of clamping plates 1003 are driven to move closer or further away from each other along the width direction of the second vacuum adsorption box 1001.

[0037] It should be further explained that each of the first vacuum adsorption boxes 93 has multiple second vacuum adsorption boxes 1001 connected in series on one side. The first vacuum adsorption box 93 and the second vacuum adsorption box 1001 have the same structure, and both are provided with suction cups 94 at the bottom. Adjacent second vacuum adsorption boxes 1001 are interconnected by connecting pipes 95. The connecting pipes 95 are flexible and adaptable to the rotation between adjacent second vacuum adsorption boxes 1001. In this embodiment, the storage cover 1002 has a U-shaped structure with openings at both ends, and also has an opening on the side near the welding workpiece. The storage cover 1002 has an opening and a cylinder 1004 is fixedly installed on its outer side. The output end of the cylinder 1004 passes through the storage cover 1002 and is fixedly connected to the clamping plate 1003. Two sets of corresponding cylinders 1004 drive the two sets of clamping plates 1003 on both sides of the second vacuum adsorption box 1001 to move closer or further away from each other. A stabilizing slide rod 1005 is provided on the side of the two sets of clamping plates 1003 that are far apart from each other. One end of the stabilizing slide rod 1005 is fixedly connected to the clamping plate 1003, and the other end passes through and is slidably connected to the storage cover 1002. During use, after the workpiece is initially clamped and fixed by the first vacuum adsorption box 93, the rotating component 7 rotates one of the second vacuum adsorption boxes 1001 to the inside of the limiting cover 8. Then, the multiple second vacuum adsorption boxes 1001 connected to each other by hinges inside the storage cover 1002 will bend downwards due to gravity. Due to the pressure of the second vacuum adsorption boxes 1001, the suction cups 94 connected to the second vacuum adsorption boxes 1001 can adhere to the outer surface of the workpiece. Then, the vacuum pump 13 evacuates the first vacuum adsorption box 93. At that time, the interiors of the first vacuum adsorption box 93 and the second vacuum adsorption box 1001 connected to each other by the connecting pipe 95 will be evacuated to a vacuum. This allows the suction cups 94 fixedly connected to the end of the multiple second vacuum adsorption boxes 1001 near the workpiece to be tightly adsorbed onto the outer surface of the workpiece. After the first vacuum adsorption box 93 and the second vacuum adsorption box 1001 have completed the surface limiting and fixing of the workpiece, the workpiece is finally fixed.

[0038] Since the first vacuum adsorption box 93 and the second vacuum adsorption box 1001 are connected by a hinge, the second vacuum adsorption box 1001 has no supporting foundation. To increase the supporting capacity of the second vacuum adsorption box 1001, the transmission ends of the cylinders 1101 on both sides of the storage cover 1002 extend towards each other, thereby driving the clamping plates 1003 fixedly connected to the output ends of the cylinders 1101 to move closer together. Since both the second vacuum adsorption box 1001 and the clamping plates 1003 have a certain height, even though multiple second vacuum adsorption boxes 1001 are bent and attached to the surface of the welding workpiece, a portion of the second vacuum adsorption box 1001 is still located between the two sets of clamping plates 1003. Therefore, by the two sets of clamping plates 1003 moving closer together, the two sides of the second vacuum adsorption box 1001 can be clamped. The clamping force applied to the two sides of the second vacuum adsorption box 1001 by the two clamping plates 1003... This prevents multiple second vacuum adsorption boxes 1001 from moving. The bent state of the multiple second vacuum adsorption boxes 1001, connected by hinges, is limited and fixed. Specifically, the multiple second vacuum adsorption boxes 1001 are indirectly fixed to the output shaft of cylinder 91 via clamping plate 1003. Because the clamping plate 1003 applies clamping force to both sides of the second vacuum adsorption boxes 1001, the connection points between the second vacuum adsorption boxes 1001 will not flip due to the downward pressure of the welding workpiece. This improves the support capacity of the second vacuum adsorption boxes 1001, making the welding workpiece, limited by the first vacuum adsorption box 93 and the second vacuum adsorption box 1001, more stably clamped. This avoids the welding surfaces of two welding workpieces intersecting due to insufficient support force from the second vacuum adsorption box 1001 during subsequent welding, thus preventing incomplete welding.

[0039] In the above embodiments, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, since the multiple second vacuum adsorption boxes 1001 are interconnected by hinges, the adsorption components will be bent due to their own gravity when in a static state. When the initial state of the topmost adsorption component is bent, the adsorption component at the tail end of the group will first contact the outer surface of the auxiliary oil tank. Therefore, during the manual calibration of the auxiliary oil tank position, this section of the adsorption component will scratch the surface of the auxiliary oil tank, resulting in scratches on the surface of the auxiliary oil tank. Therefore, in another embodiment of the invention, a limiting component 11 is provided at the top of the storage cover 1002. The limiting component 11 includes a cylinder 1101, which is fixedly connected to the connecting frame 92. The upper surface of the storage cover 1002 slides... A limit rod 1102 is dynamically connected, one end of which is fixedly connected to the output shaft of cylinder 4 1101. A limit block 1103 is installed on the side of the limit rod 1102. A limit seat 1105 is fixedly installed on the upper surface of the second vacuum adsorption box 1001. A connecting window 1104 is opened on the surface of the storage cover 1002. The limit seat 1105 passes through the connecting window 1104 through the storage cover 1002 and extends out from the inside of the storage cover 1002. A limit groove 1106 is opened on the side of the limit seat 1105 that extends out of the storage cover 1002 and is close to the limit rod 1102. The limit block 1103 is located in the limit groove 1106 and forms a limiting abutment cooperation with the limit groove 1106.

[0040] It should be further explained that cylinder 4 1101 is fixedly connected to the side of the connecting frame 92 via base 1. The output shaft of cylinder 4 1101 extends and retracts along the length of the storage cover 1002. A support is fixedly installed on the side of the storage cover 1002 away from the welding workpiece. A circular hole is opened on the support. The limiting rod 1102 is located in the circular hole and is slidably connected to the support and the storage cover 1002 through the circular hole. The limiting block 1103 is cylindrical. The limiting seat 1105 extends through the connecting window 1104 to the outer side of the top of the storage cover 1002. Several limiting seats 1105 are perpendicular to the top surface of the storage cover 1002. The limiting groove 1106 is opened on the side of the limiting seat 1105 near the limiting block 1103. The limiting groove 1106 is semi-circular. The limiting groove 1106 and the limiting block 1103 are interlocked. In actual use, before the first vacuum adsorption box 93 and multiple second vacuum adsorption boxes 1001 adsorb and fix the outer surface of the welded workpiece, the multiple second vacuum adsorption boxes 1001 are limited by the limiting seat 1105 fixedly connected to their top ends. At that time, the cylinder 1101 drives the limiting rod 1102 to extend and retract along the length of the storage cover 1002. When the multiple limiting blocks 1103 on the limiting rod 1102 disengage from the limiting groove 1106 opened on one side of the limiting seat 1105, the limiting seat 1105 will lose its limiting position. At the same time, the second vacuum adsorption boxes 1001 fixedly connected to the limiting seat 1105 will also lose their limiting position. This causes the multiple rotatably connected second vacuum adsorption boxes 1001 to flip over due to their rotatable connection. As a result, the multiple second vacuum adsorption boxes 1001 are flipped and attached to the outer surface of the welded workpiece. After the welded workpiece is completed, when the welded workpiece is manually removed from the inside of the limiting cover 8, it is then rotated by the rotating component 7. After one of the multiple storage covers 1002 is rotated to its lowest position inside the limiting cover 8, the multiple second vacuum adsorption boxes 1001 inside the storage cover 1002 will flip to a horizontal state due to their own gravity and the rotational connection between them. Then, the cylinder 1101 pushes the limiting rod 1102 to move horizontally, so that the multiple limiting blocks 1103 on the limiting rod 1102 and the limiting grooves 1106 opened on the limiting seat 1105 are engaged with each other, thereby limiting and fixing the multiple limiting seats 1105. At the same time, the multiple second vacuum adsorption boxes 1001 fixedly connected to the limiting seats 1105 can also be limited and fixed. This can achieve the limitation of the multiple second vacuum adsorption boxes 1001, so that the multiple second vacuum adsorption boxes 1001 can always be in a horizontal state before vacuum adsorption. This can avoid the problem of the multiple second vacuum adsorption boxes 1001 naturally drooping and dragging to the surface of the welding workpiece, causing scratch damage to the outer surface of the welding workpiece.

[0041] like Figure 7 , Figure 8 and Figure 9 As shown, during the use of multiple second vacuum adsorption boxes 1001, since the outer side of the welding workpiece is streamlined, the flipping process relying solely on the gravity of the second vacuum adsorption box 1001 itself cannot guarantee that the suction cup 94 fixedly connected to the end of the second vacuum adsorption box 1001 near the welding workpiece can be completely and tightly attached to the streamlined surface of the welding workpiece. Therefore, manual secondary calibration is required. Thus, in another embodiment of the invention, an electromagnet 12 is fixedly connected inside each of the multiple second vacuum adsorption boxes 1001, and the electromagnets 12 inside the multiple second vacuum adsorption boxes 1001 are connected in series.

[0042] It should be further explained that the electromagnets 12 installed inside the multiple interconnected second vacuum adsorption boxes 1001 are connected in series. Furthermore, the second vacuum adsorption box 1001, the storage cover 1002, the clamping plate 1003, the stabilizing slide rod 1005, the limiting rod 1102, the limiting block 1103, and the limiting seat 1105 are all made of non-magnetic materials such as hard plastic, alloy, or wood. In actual use, after the multiple second vacuum adsorption boxes 1001 lose their limiting position and adhere to the outer surface of the welding workpiece, energizing the electromagnets 12 inside the multiple second vacuum adsorption boxes 1001 located at the highest point inside the limiting cover 8 causes the electromagnets 12 to move in tandem with the workpiece. The second vacuum adsorption box 1001, which is fixedly connected, adsorbs onto the outer surface of the welding workpiece. The strong adsorption capacity can bring the second vacuum adsorption box 1001 closer to the outer surface of the welding workpiece, so that the suction cup 94 between the second vacuum adsorption box 1001 and the welding workpiece is deformed due to compression, thus adhering more tightly to the outer surface of the welding workpiece. This allows the multiple naturally hanging second vacuum adsorption boxes 1001 to achieve tight adhesion without manual intervention after initially adhering to the outer surface of the welding workpiece, eliminating the need for manual inspection. This reduces labor costs and improves the overall efficiency of welding workpiece positioning and fixing.

[0043] The embodiments of this example have been described above. However, this example is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this example, and all of them are within the protection scope of this example.

Claims

1. A welding device for aircraft parts production, comprising a base (1) and a support frame (6), wherein an arc welding mechanism (2) is fixedly installed on the upper surface of the base (1), the arc welding mechanism (2) includes a robotic arm (3) and an arc welding assembly (4), the fixed end of the robotic arm (3) is fixedly connected to the base (1), and the movable end is fixedly connected to the arc welding assembly (4), the support frame (6) is located on the upper surface of the base (1), the support frame (6) is driven to move horizontally along the length direction of the base (1), a rotating assembly (7) and a limiting cover (8) are installed on the support frame (6), the rotating assembly (7) is used to drive the limiting cover (8) to rotate on the support frame (6), and a first vacuum adsorption assembly (9) and a welding workpiece are installed inside the limiting cover (8), the first vacuum adsorption assembly (9) is used to adsorb and fix the welding workpiece inside the limiting cover (8); Its features are, The first vacuum adsorption assembly (9) includes several cylinders (91) fixedly installed on the outside of the limiting cover (8). Several first vacuum adsorption boxes (93) are provided inside the limiting cover (8). The several first vacuum adsorption boxes (93) are distributed in a circular and equidistant manner around the welded workpiece. The output shaft of the cylinder (91) passes through the limiting cover (8), and one end of the cylinder (91) extending into the limiting cover (8) is rotatably connected to the connecting frame (92). The bottom end of the connecting frame (92) is fixedly connected to the first vacuum adsorption box (93). The side of the first vacuum adsorption box (93) close to the welded workpiece is fixedly connected to the suction cup (94). The first vacuum adsorption box (93) is connected to the vacuum pump (13) through a pipe.

2. The welding apparatus for aircraft parts production according to claim 1, characterized in that, A drive assembly is installed on the base (1), and a horizontal slide groove (5) is provided on the upper surface of the base (1). The groove direction of the horizontal slide groove (5) is consistent with the length direction of the base (1). The drive assembly is connected to the support frame (6). The drive assembly is used to drive the support frame (6) to move along the groove direction of the horizontal slide groove (5).

3. The welding apparatus for aircraft parts production according to claim 2, characterized in that, The drive assembly includes a horizontal slide block (61) and an auxiliary slide rod (62). Both the horizontal slide block (61) and the auxiliary slide rod (62) are located inside the horizontal slide groove (5) and form a sliding guide fit with the horizontal slide groove (5). The horizontal slide block (61) is sleeved on the outer wall of the auxiliary slide rod (62) and is slidably connected with the auxiliary slide rod (62). The other end of the auxiliary slide rod (62) is fixedly connected to the groove wall of the horizontal slide groove (5). A drive component is fixedly installed on the base (1), and the output end of the drive component is fixedly connected to the support frame (6).

4. The welding apparatus for aircraft parts production according to claim 1, characterized in that, The rotating assembly (7) includes two fixed ring rails (71) fixedly connected to the top of the support frame (6). The fixed ring rails (71) are sleeved on the outer wall of the limiting cover (8) and rotatably connected to the limiting cover (8). A toothed ring (72) is fixedly connected to one end of the limiting cover (8). A rotary motor (73) is fixedly installed on the outer wall of the fixed ring rails (71). A gear (74) that meshes with the toothed ring (72) is installed at the output end of the rotary motor (73).

5. The welding apparatus for aircraft parts production according to claim 1, characterized in that, A second vacuum adsorption assembly (10) is rotatably mounted on one side of the first vacuum adsorption box (93). The second vacuum adsorption assembly (10) includes multiple second vacuum adsorption boxes (1001). One of the second vacuum adsorption boxes (1001) is rotatably connected to one side of the first vacuum adsorption box (93). The other multiple adjacent second vacuum adsorption boxes (1001) are rotatably connected to each other and communicate with each other. The second vacuum adsorption boxes (1001) are communicated with the first vacuum adsorption box (93) through a connecting pipe (95).

6. The welding apparatus for aircraft component manufacturing according to claim 5, characterized in that, The limiting cover (8) is also provided with a storage cover (1002). One end of the storage cover (1002) is fixedly connected to the output end of the cylinder (91), and the storage cover (1002) is located on the side of the first vacuum adsorption box (93) close to the second vacuum adsorption box (1001).

7. The welding apparatus for aircraft component manufacturing according to claim 6, characterized in that, The second vacuum adsorption box (1001) is located inside the storage cover (1002). The storage cover (1002) is equipped with a clamping plate (1003). The clamping plates (1003) are located on both sides of the second vacuum adsorption box (1001). The two sets of clamping plates (1003) are driven to move closer or further away from each other along the width direction of the second vacuum adsorption box (1001).

8. The welding apparatus for aircraft component manufacturing according to claim 7, characterized in that, A cylinder three (1004) is fixedly installed on the outer side of the storage cover (1002). The output end of the cylinder three (1004) passes through the storage cover (1002) and is fixedly connected to the clamping plate (1003). A stabilizing slide rod (1005) is provided on one side of the two clamping plates (1003) that are far apart from each other. One end of the stabilizing slide rod (1005) is fixedly connected to the clamping plate (1003), and the other end passes through and is slidably connected to the storage cover (1002).

9. A welding apparatus for aircraft parts production according to claim 6, characterized in that, A limiting component (11) is provided at the top of the storage cover (1002). The limiting component (11) includes a cylinder four (1101). The cylinder four (1101) is fixedly connected to the connecting frame (92). A limiting rod (1102) is slidably connected to the upper surface of the storage cover (1002). One end of the limiting rod (1102) is fixedly connected to the output shaft of the cylinder four (1101). A limiting block (1103) is installed on the side of the limiting rod (1102). A limiting seat (1105) is fixedly installed on the upper surface of the second vacuum adsorption box (1001). A connecting window (1104) is opened on the surface of the storage cover (1002).

10. A welding apparatus for aircraft component manufacturing according to claim 8, characterized in that, The limiting seat (1105) passes through the storage cover (1002) through the connecting window (1104) and extends out from inside the storage cover (1002). A limiting groove (1106) is opened on one side of the limiting seat (1105) that extends out of the storage cover (1002) and is close to the limiting rod (1102). The limiting block (1103) is located in the limiting groove (1106) and forms a limiting abutment cooperation with the limiting groove (1106).

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