Welding tool for welding aluminum alloy fence and welding method thereof

Abstract

The invention discloses a welding tool for welding an aluminum alloy fence. The welding tool comprises a base, a welding table, four first clamping assemblies, a second clamping assembly, a welding assembly, a transmission turn-over assembly and a plurality of polishing assemblies. A welding method for welding an aluminum alloy fence comprises the steps that S1, one end of a cross beam is positioned; s2, the stand columns are attached in sequence; s3, synchronous clamping of the stand columns; s4, fixing the other end of the cross beam; s5, all-round welding operation is carried out; s6, polishing treatment is conducted on the welding position; the cambered surface of the protruding part of the pressing block plate is attached to the cambered surfaces of the arc-shaped clamping blocks, when the telescopic rod pushes the pressing block plate to slide, the cambered surfaces make contact to generate lateral component force, the sliding rod is driven to directionally move along the groove plate, the upper arc-shaped clamping block and the lower arc-shaped clamping block synchronously get close to the stand column, and finally the stand column is clamped by the upper arc-shaped clamping block and the lower arc-shaped clamping block. According to the tool, all the stand columns can be clamped and fixed conveniently, independent fixing of each stand column is avoided, the clamping operation steps are reduced, and the universality and the use efficiency of the tool are improved.

Description

Technical Field

[0001] This invention relates to the field of fence welding technology, and in particular to a welding fixture and welding method for welding aluminum alloy fences. Background Technology

[0002] Aluminum alloy fences are widely used in building decoration, municipal engineering, and garden protection due to their lightweight, corrosion resistance, and aesthetic appeal. The core structure of the fence is formed by welding beams and posts together. The quality of the welding directly determines the structural strength, stability, and service life of the fence. Therefore, the welding process is a critical step in the production of aluminum alloy fences, and strict requirements are placed on welding precision, efficiency, and consistency.

[0003] In existing technologies, aluminum alloy fence welding is mainly divided into two categories: manual welding and welding assisted by simple tooling. Manual welding involves an operator holding a welding device and performing spot welding or continuous welding at the intersections of the beams and posts according to preset positions. During the welding process, the workpiece angle needs to be manually adjusted to complete the full circumference welding. Welding assisted by simple tooling uses basic clamping structures, such as bolt clamping blocks and locating pins, to first fix the beams to the tooling table, then position the posts one by one and fix them with a manual locking mechanism before proceeding with the welding operation.

[0004] However, the simple tooling requires clamping each column individually, which is cumbersome and has low welding efficiency. Furthermore, when welding the connection between the beam and the column, the workpiece needs to be manually flipped, which not only increases the operation time but also easily causes the workpiece to shift, affecting the welding accuracy.

[0005] Accordingly, this application proposes a welding fixture and welding method for welding aluminum alloy fences. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a welding fixture and welding method for welding aluminum alloy fences.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A welding fixture and welding method for welding aluminum alloy fences, comprising a base, a welding table, four first clamping assemblies, a second clamping assembly, a welding assembly, a transmission flipping assembly, and several polishing assemblies;

[0009] The welding table is provided with two frame plates, and two slot plates are fixedly connected between the two frame plates. The four first clamping components are respectively arranged in pairs on the two frame plates. The welding table is provided with two crossbeams, and several columns are arranged between the two crossbeams. A rotating plate is provided below the two crossbeams, and several sets of uprights are provided on the two rotating plates. Two sets of frame arms are rotatably connected to the inner wall of the welding table. Two first motors are fixedly installed on the outer side of the welding table, and the drive shafts of the first motors are fixedly connected to the frame arms.

[0010] The welding assembly includes: two sets of first chutes, two plasma welding devices, two first lead screws, and two sliders;

[0011] The first clamping assembly includes: a mounting block, two L-shaped clamping blocks, a second sliding groove, and a bidirectional lead screw;

[0012] The second clamping assembly is used to clamp several columns simultaneously;

[0013] The transmission flipping assembly is used to flip the intersection of the crossbeam and the column;

[0014] The polishing assembly is used to polish the welded joints between the beam and the column.

[0015] Preferably, the second clamping assembly includes two telescopic rods, two pressure plates, several arc-shaped clamping blocks, and several sliding rods; the telescopic rods are fixedly installed on the frame plate, the pressure plates are slidably connected to the groove plate, the sliding rods are slidably connected to the groove plate, and the several arc-shaped clamping blocks are respectively fixed on the several sliding rods.

[0016] Preferably, the output ends of the two telescopic rods are respectively fixedly connected to two pressure plates, the arc surface of the protruding part of the pressure plate fits with the arc surface of the arc-shaped clamping block, one end of the slide rod is fixedly connected to a limit block, and a spring is fixedly connected between the limit block and the groove plate.

[0017] Preferably, the transmission flipping assembly includes a first transmission wheel, a second transmission wheel, and a belt. The first transmission wheel is rotatably connected to the side wall of the welding table, the second transmission wheel is rotatably connected to the side wall of the welding table, and the belt is wound around the outside of the first and second transmission wheels.

[0018] Preferably, the second transmission wheel is fixedly connected to the frame plate, the first transmission wheel is rotatably connected to the first lead screw, and a one-way bearing is provided at the connection between the first transmission wheel and the first lead screw.

[0019] Preferably, the polishing assembly includes a third groove, a semi-circular ring, an arc-shaped sleeve, a semi-toothed ring, and a toothed plate; the third groove is disposed on a stand, the semi-circular ring is fixedly connected to the stand, the arc-shaped sleeve is slidably connected to the semi-circular ring, the semi-toothed ring is fixedly connected to the arc-shaped sleeve, and the toothed plate is slidably connected to the third groove.

[0020] Preferably, a second lead screw is rotatably connected to the upright, the toothed plate is slidably connected to the second lead screw, a third motor is fixedly installed on the upright, the transmission shaft of the third motor is fixedly connected to the second lead screw, the arc-shaped sleeve is attached to the intersection of the crossbeam and the column, and the toothed plate meshes with the half-tooth ring.

[0021] Preferably, two sets of first slide grooves are respectively disposed on the welding table, two sliders are respectively slidably connected to the two sets of first slide grooves, two first lead screws are respectively rotatably connected inside the welding table, the plasma welding device is fixedly installed on the slider, the slider is slidably connected to the first lead screw, and two second motors are respectively fixedly installed on the outside of the welding table, and the drive shafts of the two second motors are respectively fixedly connected to the two first lead screws.

[0022] Preferably, the mounting block is fixedly mounted on one end of the frame plate, the second sliding groove is provided on the mounting block, the bidirectional screw is rotatably connected in the mounting block, the two L-shaped clamps are slidably connected on both sides of the thread of the bidirectional screw, the two L-shaped clamps are slidably connected in the second sliding groove, and the two sets of frame arms are fixedly connected to the two rotating plates respectively.

[0023] A welding fixture for welding aluminum alloy fences, used in conjunction with a welding method for welding aluminum alloy fences, includes the following steps:

[0024] S1, Positioning one end of the crossbeam

[0025] Place a crossbeam between the L-shaped clamping blocks of the two sets of first clamping components, and turn the double-acting screw to make the two L-shaped clamping blocks slide relative to each other along the second slide groove, clamping the two ends of the crossbeam to achieve positioning.

[0026] S2, the columns are attached sequentially.

[0027] Insert several columns one by one between the corresponding upper and lower arc-shaped clamps, adjust the position of the columns, and ensure that each column is precisely fitted to the surface of the beam.

[0028] S3, Column synchronous clamping

[0029] Activate the telescopic rod to push the pressure plate to slide along the groove plate. The arc surface transmission drives the slide rod to move, so that the arc-shaped clamping block clamps all the columns simultaneously.

[0030] S4, the other end of the crossbeam is fixed.

[0031] Follow step S1 to fix the other crossbeam to the first clamping assembly on the other side, thus completing the clamping of the fence frame.

[0032] S5, Full-week welding operation

[0033] The second motor is started, and the first lead screw drives the slider and plasma welding device to move, welding the upper half of the intersection of the column and the crossbeam in sequence; then the first lead screw rotates in the opposite direction, driving the workpiece to flip through the transmission flipping assembly to weld the lower half of the circle.

[0034] S6. Polishing treatment at the weld joint

[0035] After the transmission flipping assembly is reset, the polishing assembly is reset along with the upright frame, and the arc-shaped sleeve fits into the weld joint; the third motor is started, and the second lead screw drives the toothed plate to move the arc-shaped sleeve back and forth, polishing the weld joint.

[0036] The present invention has the following beneficial effects:

[0037] 1. Using the second clamping assembly, after the first clamping assembly has fixed the crossbeam, the uprights are inserted sequentially between the upper and lower arc-shaped clamping blocks, simultaneously bringing the uprights into contact with the crossbeam. Then, the telescopic rod is activated to push the pressure plate to slide. The arc surface of the protruding part of the pressure plate contacts the arc surface of the arc-shaped clamping block. When the telescopic rod pushes the pressure plate to slide, the arc surface contact generates a lateral force, driving the slide rod to move directionally along the groove plate, causing the upper and lower arc-shaped clamping blocks to move towards the uprights synchronously. Finally, the upper and lower arc-shaped clamping blocks clamp the uprights. In this way, all uprights can be clamped and fixed, avoiding the need to fix each upright individually, reducing clamping operation steps, and improving the versatility and efficiency of the tooling.

[0038] Second, through the transmission flipping assembly, when the first lead screw rotates, it enables the slider to drive the plasma welding device to slide, allowing it to weld the upper half of the intersection of each column and beam sequentially. At this time, under the action of the one-way bearing, the first lead screw rotates on the first transmission wheel but cannot rotate. When the plasma welding device finishes welding, the first lead screw rotates in the opposite direction, which drives the first transmission wheel to rotate. Under the action of the belt, the second transmission wheel drives the frame plate to rotate, realizing the overall flipping of the beam and column. This allows the plasma welding device to weld the lower half of the intersection of the column and beam, ensuring that the entire circumference of the intersection of the column and beam is welded, avoiding the decrease in work efficiency caused by manual adjustment of the welding position.

[0039] Third, through the polishing component, when the transmission flipping component is working, the second motor drives the frame arm to rotate, causing the rotating plate to drive the upright and polishing component to rotate to one side below the welding table, avoiding limiting the rotation of the crossbeam and the upright. After the flipping is completed, the rotating plate drives the polishing component to reset, and the welded joint of the crossbeam and the upright is attached to the arc-shaped sleeve. Through the reciprocating rotation of the second lead screw, the toothed plate drives the semi-toothed ring and the arc-shaped sleeve to slide back and forth on the semi-circular ring. The friction with the welded joint achieves polishing treatment to remove the welding slag, burrs and oxide layer remaining from the welding, ensuring the quality of the fence product. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of a welding fixture for welding aluminum alloy fences proposed in this invention;

[0041] Figure 2 This is a schematic diagram of the connection structure of a welding fixture frame, beams, and columns for welding aluminum alloy fences, as proposed in this invention.

[0042] Figure 3 This is a schematic diagram of the connection structure of the first clamping assembly of a welding fixture for welding aluminum alloy fences proposed in this invention.

[0043] Figure 4 This is a schematic diagram of the connection structure of a welding fixture for welding aluminum alloy fences, including a groove plate, an arc-shaped clamping block, and a limiting block, as proposed in this invention.

[0044] Figure 5 This is an internal sectional view of a welding fixture slot plate for welding aluminum alloy fences, as proposed in this invention.

[0045] Figure 6 This is a schematic diagram of the connection structure of the components under the welding table of a welding fixture for welding aluminum alloy fences, as proposed in this invention.

[0046] Figure 7 This is a schematic diagram of the connection structure of components on a welding fixture plate for welding aluminum alloy fences, as proposed in this invention.

[0047] Figure 8 This is a schematic diagram of the connection structure of a welding fixture frame, a semi-toothed ring, and a semi-circular ring for welding aluminum alloy fences, as proposed in this invention.

[0048] Figure 9 This is a cross-sectional view of a welding table for welding aluminum alloy fences, as proposed in this invention.

[0049] In the diagram: 1. Welding table; 2. Plasma welding device; 3. First motor; 4. Base; 5. Second motor; 6. First chute; 7. Crossbeam; 8. Column; 9. Frame plate; 10. Frame arm; 11. First lead screw; 12. Slot plate; 13. Mounting block; 14. Pressure plate; 15. Telescopic rod; 16. Second chute; 17. L-shaped clamping block; 18. Bidirectional lead screw; 19. Arc-shaped clamping block; 20. Second transmission wheel; 21. Belt; 22. First transmission wheel; 23. Limiting block; 24. Spring; 25. Slide rod; 26. Rotating plate; 27. Slider; 28. Stand; 29. ​​Semicircular ring; 30. Arc-shaped sleeve; 31. Semi-toothed ring; 32. Third chute; 33. Toothed plate; 34. Second lead screw; 35. Third motor. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0051] Example 1:

[0052] Reference Figure 1 , Figure 2 , Figures 4 to 6 A welding fixture for welding aluminum alloy fences includes a base 4, a welding table 1, four first clamping assemblies, a second clamping assembly, a welding assembly, a transmission flipping assembly, and several polishing assemblies.

[0053] The welding table 1 has two frame plates 9, and two slotted plates 12 are fixedly connected between the two frame plates 9 to provide an installation and sliding base for the second clamping components. Four first clamping components are respectively set on the two frame plates 9 in pairs to fix the crossbeams 7. The welding table 1 has two crossbeams 7, and several columns 8 are set between the two crossbeams 7. The crossbeams 7 and columns 8 are components of the aluminum alloy fence and need to be fixedly connected by welding components. There are rotating plates 26 below the two crossbeams 7, and several sets of uprights 28 are set on the two rotating plates 26 to install and fix the polishing components. Two sets of frame arms 10 are rotatably connected to the inner wall of the welding table 1. Two first motors 3 are fixedly installed on the outer side of the welding table 1. The drive shaft of the first motor 3 is fixedly connected to the frame arm 10. The first motor 3 drives the frame arm 10 to rotate, thereby driving the rotating plate 26 and the uprights 28 to rotate synchronously.

[0054] The welding assembly includes: two sets of first chutes 6, two plasma welding devices 2, two first lead screws 11, and two sliders 27;

[0055] Two sets of first sliding grooves 6 are respectively set on the welding table 1, and two sliders 27 are slidably connected to the two sets of first sliding grooves 6 respectively. The first sliding grooves 6 provide sliding guidance for the sliders 27. Two first lead screws 11 are rotatably connected inside the welding table 1 respectively. The plasma welding device 2 is fixedly installed on the sliders 27. The sliders 27 drive the plasma welding device 2 to move synchronously. The plasma welding device 2 consists of a plasma welding gun and a robotic arm. Welding is controlled by an automated system. The sliders 27 are slidably connected to the first lead screws 11. The rotation of the first lead screws 11 can drive the sliders 27 to slide along the first sliding grooves 6. Two second motors 5 are fixedly installed on the outside of the welding table 1 respectively. The drive shafts of the two second motors 5 are fixedly connected to the two first lead screws 11 respectively. The second motors 5 provide rotational power for the first lead screws 11.

[0056] The first clamping assembly includes: a mounting block 13, two L-shaped clamping blocks 17, a second slide groove 16, and a bidirectional lead screw 18;

[0057] Mounting block 13 is fixedly mounted on one end of frame plate 9. Second slide groove 16 is provided on mounting block 13 to provide sliding guide for L-shaped clamping block 17. Bidirectional screw 18 is rotatably connected in mounting block 13, and mounting block 13 provides rotational support for bidirectional screw 18. Two L-shaped clamping blocks 17 are slidably connected to both sides of the thread of bidirectional screw 18. The rotation of bidirectional screw 18 drives the two L-shaped clamping blocks 17 to slide relative to or away from each other. The two L-shaped clamping blocks 17 are slidably connected in second slide groove 16. Second slide groove 16 restricts the rotation of L-shaped clamping blocks 17 to ensure directional sliding. Two sets of frame arms 10 are fixedly connected to two rotating plates 26 respectively. The rotation of frame arms 10 can drive rotating plates 26 to rotate synchronously.

[0058] The second clamping component is used to clamp several columns 8 simultaneously.

[0059] The transmission flipping assembly is used to flip the intersection of the crossbeam 7 and the column 8.

[0060] The polishing assembly is used to polish the welded joint between the beam 7 and the column 8.

[0061] The second clamping assembly includes two telescopic rods 15, two pressure plates 14, several arc-shaped clamping blocks 19, and several sliding rods 25. The telescopic rods 15 are fixedly installed on the frame plate 9, which provides installation support for the telescopic rods 15. The pressure plates 14 are slidably connected to the groove plate 12, which provides sliding guidance for the pressure plates 14. The sliding rods 25 are slidably connected to the groove plate 12, which provides a sliding path for the sliding rods 25. Several arc-shaped clamping blocks 19 are respectively fixed on several sliding rods 25, and the sliding rods 25 drive the arc-shaped clamping blocks 19 to move synchronously.

[0062] The output ends of the two telescopic rods 15 are fixedly connected to the two pressure plates 14 respectively. The telescopic rods 15 drive the pressure plates 14 to slide along the groove plate 12. The arc surface of the protruding part of the pressure plate 14 fits against the arc surface of the arc-shaped clamping block 19. The pressure plate 14 drives the arc-shaped clamping block 19 to move through the arc surface contact. One end of the slide rod 25 is fixedly connected to a limit block 23 to limit the sliding stroke of the slide rod 25. A spring 24 is fixedly connected between the limit block 23 and the groove plate 12 to provide the reset power for the slide rod 25.

[0063] In this embodiment, one of the crossbeams 7 is first placed between the two first clamping components. Then, the bidirectional lead screw 18 is turned, causing the two L-shaped clamping blocks 17 to slide relative to each other along the second slide groove 16, clamping the crossbeam 7 from opposite sides. The other clamping component repeats the above operation to achieve positioning and fixing of both ends of the crossbeam 7. Then, the column 8 is inserted between the upper and lower arc-shaped clamping blocks 19 in sequence, so that the column 8 is in contact with the crossbeam 7. Then, the telescopic rod 15 is activated to push the pressure plate 14 to slide. The arc surface of the protruding part of the pressure plate 14 is in contact with the arc surface of the arc-shaped clamping block 19. When the telescopic rod 15 pushes the pressure plate 14 to slide, the arc surface... The contact generates a lateral force, driving the slide bar 25 to move directionally along the groove plate 12, causing the upper and lower arc-shaped clamping blocks 19 to move towards the column 8 simultaneously. Finally, the upper and lower arc-shaped clamping blocks 19 clamp the column 8, thus achieving the clamping and fixing of all columns 8, avoiding the need to fix each column 8 individually, reducing clamping operation steps, and improving the versatility and efficiency of the tooling. Finally, the other crossbeam 7 is clamped and fixed in the same way as the first crossbeam 7 to complete the installation. Subsequently, the rotation of the first lead screw 11 can drive the plasma welding device 2 to slide and weld each column 8 and crossbeam 7 in sequence.

[0064] Example 2:

[0065] Unlike Example 1, referring to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 9 This embodiment also has the following further features:

[0066] The transmission flipping assembly includes a first transmission wheel 22, a second transmission wheel 20, and a belt 21. The belt 21 is used to transmit power between the first transmission wheel 22 and the second transmission wheel 20. The first transmission wheel 22 is rotatably connected to the side wall of the welding table 1, and the welding table 1 provides rotational support for the first transmission wheel 22. The second transmission wheel 20 is rotatably connected to the side wall of the welding table 1, and the welding table 1 provides rotational support for the second transmission wheel 20. The belt 21 is wrapped around the outside of the first transmission wheel 22 and the second transmission wheel 20.

[0067] The second transmission wheel 20 is fixedly connected to the frame plate 9. The rotation of the second transmission wheel 20 drives the frame plate 9 to rotate synchronously. The first transmission wheel 22 is rotatably connected to the first lead screw 11. The first lead screw 11 can drive the first transmission wheel 22 to rotate or rotate relative to the first transmission wheel 22. A one-way bearing is provided at the connection between the first transmission wheel 22 and the first lead screw 11 to control the direction of power transmission. Only the first lead screw 11 is allowed to drive the first transmission wheel 22 to rotate in a specific direction. A damping shaft is provided at the connection between the first transmission wheel 22 and the inner wall of the welding table 1 to prevent the first transmission wheel 22 from rotating irregularly due to external forces.

[0068] In this embodiment, when the first lead screw 11 rotates, it enables the slider 27 to drive the plasma welding device 2 to slide, allowing it to weld the upper half of the intersection of each column 8 and the crossbeam 7 in sequence. At this time, under the action of the one-way bearing, the first lead screw 11 rotates on the first transmission wheel 22 but cannot rotate. When the plasma welding device 2 finishes welding, the first lead screw 11 rotates in the opposite direction, which can drive the first transmission wheel 22 to rotate. Under the action of the belt 21, the second transmission wheel 20 drives the frame plate 9 to rotate, realizing the overall flipping of the crossbeam 7 and the column 8. This allows the plasma welding device 2 to weld the lower half of the intersection of the column 8 and the crossbeam 7, so that the entire circumference of the intersection of the column 8 and the crossbeam 7 can be welded, avoiding the decrease in work efficiency caused by manually adjusting the welding position.

[0069] Example 3:

[0070] Reference Figure 1 , Figures 6 to 8 Compared to Embodiment 1 and Embodiment 2, in this embodiment:

[0071] The polishing assembly includes a third groove 32, a semi-circular ring 29, an arc-shaped sleeve 30, a semi-toothed ring 31, and a toothed plate 33. The third groove 32 provides sliding guidance for the toothed plate 33, the semi-circular ring 29 provides sliding support for the arc-shaped sleeve 30, the semi-toothed ring 31 is used to transmit the power of the toothed plate 33, and the outer side of the arc-shaped sleeve 30 is made of frosted material to achieve polishing at the weld joint.

[0072] The third slide groove 32 is mounted on the upright frame 28, which provides the mounting base for the third slide groove 32. The semi-circular ring 29 is fixedly connected to the upright frame 28, which provides fixed support for the semi-circular ring 29. The arc-shaped sleeve 30 is slidably connected to the semi-circular ring 29, which restricts the sliding trajectory of the arc-shaped sleeve 30. The semi-toothed ring 31 is fixedly connected to the arc-shaped sleeve 30, which drives the arc-shaped sleeve 30 to move synchronously. The toothed plate 33 is slidably connected to the third slide groove 32, which guides the toothed plate 33 to slide in a specific direction.

[0073] A second lead screw 34 is rotatably connected to the support frame 28, providing rotational support for the second lead screw 34. A toothed plate 33 is slidably connected to the second lead screw 34, and the rotation of the second lead screw 34 drives the toothed plate 33 to slide. A third motor 35 is fixedly installed on the support frame 28, providing mounting support for the third motor 35. The drive shaft of the third motor 35 is fixedly connected to the second lead screw 34, and the third motor 35 provides rotational power for the second lead screw 34. An arc-shaped sleeve 30 is attached to the intersection of the crossbeam 7 and the column 8 for polishing the welded joint. The toothed plate 33 meshes with the semi-toothed ring 31, and the toothed plate 33 drives the semi-toothed ring 31 to rotate through the meshing.

[0074] In this embodiment, before the transmission flipping assembly is started, the second motor 5 drives the frame arm 10 to rotate, and the frame arm 10 drives the rotating plate 26 to rotate synchronously. The rotating plate 26 drives the upright frame 28 and the polishing assembly to flip down to the side below the welding table 1 to avoid interference between the polishing assembly and the workpiece, ensuring that there is no mechanical obstruction during the flipping of the crossbeam 7 and the upright 8, and ensuring smooth flipping action. After the flipping is completed, the second motor 5 drives the frame arm 10 to rotate in the opposite direction, and the rotating plate 26 drives the upright frame 28 and the polishing assembly to reset. At this time, the welding point of the crossbeam 7 and the upright 8 is exactly in contact with the inner arc surface of the arc sleeve 30. The arc surface contour of the arc sleeve 30 matches the shape of the welding point, achieving full fit of the welding point. Through the reciprocating rotation of the second lead screw 34, the toothed plate 33 drives the semi-toothed ring 31 and the arc sleeve 30 to slide back and forth on the semi-circular ring 29. Through friction with the welding point, polishing is achieved to remove the welding slag, burrs and oxide layer remaining from the welding, ensuring the quality of the fence product.

[0075] A welding method for welding aluminum alloy fences includes the following steps:

[0076] S1, Positioning one end of the crossbeam

[0077] Place a crossbeam 7 between two sets of L-shaped clamping blocks 17 of the first clamping assembly, and turn the bidirectional screw 18 to make the two L-shaped clamping blocks 17 slide relative to each other along the second slide groove 16 to clamp the two ends of the crossbeam 7 to achieve positioning.

[0078] S2, the columns are attached sequentially.

[0079] Insert several uprights 8 into the corresponding upper and lower arc-shaped clamps 19 in sequence, adjust the position of the uprights 8 to ensure that each upright is precisely fitted to the surface of the crossbeam 7;

[0080] S3, Column synchronous clamping

[0081] Start the telescopic rod 15, push the pressure plate 14 to slide along the groove plate 12, and drive the slide rod 25 to move through the arc surface transmission, so that the arc-shaped clamping block 19 simultaneously clamps all the columns 8;

[0082] S4, the other end of the crossbeam is fixed.

[0083] Follow step S1 to fix the other crossbeam 7 to the first clamping assembly on the other side, thus completing the clamping of the fence frame.

[0084] S5, Full-week welding operation

[0085] Start the second motor 5, and the first lead screw 11 drives the slider 27 and the plasma welding device 2 to move, welding the upper half of the intersection of the column 8 and the crossbeam 7 in sequence; then the first lead screw 11 rotates in the opposite direction, driving the workpiece to flip through the transmission flipping assembly, and welding the lower half of the circle.

[0086] S6. Polishing treatment at the weld joint

[0087] After the transmission flipping assembly is reset, the polishing assembly is reset along with the upright frame 28, and the arc-shaped sleeve 30 fits into the welding joint; the third motor 35 is started, and the second lead screw 34 drives the toothed plate 33 to move the arc-shaped sleeve 30 back and forth to polish the welding joint.

[0088] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding fixture for welding aluminum alloy fences, characterized in that, It includes a base (4), a welding table (1), four first clamping components, a second clamping component, a welding component, a transmission flipping component, and several polishing components; The welding table (1) is provided with two frame plates (9), and two slot plates (12) are fixedly connected between the two frame plates (9). Four first clamping components are respectively set on the two frame plates (9) in pairs. The welding table (1) is provided with two crossbeams (7), and several columns (8) are provided between the two crossbeams (7). A rotating plate (26) is provided below the two crossbeams (7), and several sets of uprights (28) are provided on the two rotating plates (26). Two sets of frame arms (10) are rotatably connected to the inner wall of the welding table (1). Two first motors (3) are fixedly installed on the outer side of the welding table (1). The drive shaft of the first motor (3) is fixedly connected to the frame arm (10). The welding assembly includes: two sets of first chutes (6), two plasma welding devices (2), two first lead screws (11), and two sliders (27); The first clamping assembly includes: a mounting block (13), two L-shaped clamping blocks (17), a second slide (16), and a bidirectional lead screw (18); The second clamping assembly is used to clamp several columns (8) simultaneously; The transmission flipping assembly is used to flip the intersection of the crossbeam (7) and the column (8); The polishing assembly is used to polish the weld between the beam (7) and the column (8).

2. The welding fixture for welding aluminum alloy fences according to claim 1, characterized in that, The second clamping assembly includes two telescopic rods (15), two pressure plates (14), several arc-shaped clamping blocks (19), and several sliding rods (25); the telescopic rods (15) are fixedly installed on the frame plate (9), the pressure plates (14) are slidably connected to the groove plate (12), the sliding rods (25) are slidably connected to the groove plate (12), and several arc-shaped clamping blocks (19) are respectively fixed on several sliding rods (25).

3. The welding fixture for welding aluminum alloy fences according to claim 2, characterized in that, The output ends of the two telescopic rods (15) are fixedly connected to the two pressure plates (14) respectively. The arc surface of the protruding part of the pressure plate (14) is in contact with the arc surface of the arc-shaped clamp (19). One end of the slide rod (25) is fixedly connected to the limit block (23). A spring (24) is fixedly connected between the limit block (23) and the groove plate (12).

4. The welding fixture for welding aluminum alloy fences according to claim 1, characterized in that, The transmission flipping assembly includes a first transmission wheel (22), a second transmission wheel (20), and a belt (21). The first transmission wheel (22) is rotatably connected to the side wall of the welding table (1), the second transmission wheel (20) is rotatably connected to the side wall of the welding table (1), and the belt (21) is wrapped around the outside of the first transmission wheel (22) and the second transmission wheel (20).

5. The welding fixture for welding aluminum alloy fences according to claim 4, characterized in that, The second transmission wheel (20) is fixedly connected to the frame plate (9), the first transmission wheel (22) is rotatably connected to the first lead screw (11), and a one-way bearing is provided at the connection between the first transmission wheel (22) and the first lead screw (11).

6. The welding fixture for welding aluminum alloy fences according to claim 1, characterized in that, The polishing assembly includes a third groove (32), a semi-circular ring (29), an arc-shaped sleeve (30), a semi-toothed ring (31), and a toothed plate (33); the third groove (32) is provided on the stand (28), the semi-circular ring (29) is fixedly connected to the stand (28), the arc-shaped sleeve (30) is slidably connected to the semi-circular ring (29), the semi-toothed ring (31) is fixedly connected to the arc-shaped sleeve (30), and the toothed plate (33) is slidably connected to the third groove (32).

7. The welding fixture for welding aluminum alloy fences according to claim 6, characterized in that, The second lead screw (34) is rotatably connected to the upright (28), the toothed plate (33) is slidably connected to the second lead screw (34), the third motor (35) is fixedly installed on the upright (28), the transmission shaft of the third motor (35) is fixedly connected to the second lead screw (34), the arc sleeve (30) is attached to the intersection of the crossbeam (7) and the column (8), and the toothed plate (33) meshes with the half toothed ring (31).

8. The welding fixture for welding aluminum alloy fences according to claim 1, characterized in that, Two sets of first slide grooves (6) are respectively set on the welding table (1), two sliders (27) are respectively slidably connected to the two sets of first slide grooves (6), two first lead screws (11) are respectively rotatably connected inside the welding table (1), the plasma welding device (2) is fixedly installed on the slider (27), the slider (27) is slidably connected to the first lead screw (11), and two second motors (5) are respectively fixedly installed on the outside of the welding table (1), and the drive shafts of the two second motors (5) are respectively fixedly connected to the two first lead screws (11).

9. A welding fixture for welding aluminum alloy fences according to claim 1, characterized in that, The mounting block (13) is fixedly mounted on one end of the frame plate (9). The second slide groove (16) is provided on the mounting block (13). The bidirectional screw (18) is rotatably connected in the mounting block (13). The two L-shaped clamps (17) are slidably connected on both sides of the thread of the bidirectional screw (18). The two L-shaped clamps (17) are slidably connected in the second slide groove (16). The two sets of frame arms (10) are fixedly connected to the two rotating plates (26).

10. A welding fixture for welding aluminum alloy fences as described in any one of claims 1-9, used in accordance with a welding method for welding aluminum alloy fences, characterized in that... Includes the following steps: S1, Positioning one end of the crossbeam Place a crossbeam (7) between the L-shaped clamps (17) of the two sets of first clamping components, and turn the double-acting screw (18) to make the two L-shaped clamps (17) slide relative to each other along the second slide groove (16) to clamp the two ends of the crossbeam (7) to achieve positioning. S2, the columns are attached sequentially. Insert several columns (8) into the corresponding upper and lower arc-shaped clamps (19) in sequence, adjust the position of the columns (8) to ensure that each column (8) is precisely fitted to the surface of the beam (7); S3, Column synchronous clamping Start the telescopic rod (15), push the pressure plate (14) to slide along the groove plate (12), and drive the slide rod (25) to move through the arc surface transmission, so that the arc-shaped clamping block (19) simultaneously clamps all the columns (8). S4, the other end of the crossbeam is fixed. Follow step S1 to fix the other crossbeam (7) to the first clamping assembly on the other side, and complete the clamping of the fence frame; S5, Full-week welding operation Start the second motor (5), and the first lead screw (11) drives the slider (27) and plasma welding device (2) to move, welding the upper half of the intersection of the column (8) and the crossbeam (7) in sequence; then the first lead screw (11) rotates in the opposite direction, driving the workpiece to flip through the transmission flipping assembly, and welding the lower half of the circle; S6. Polishing treatment at the weld joint After the transmission flipping assembly is reset, the polishing assembly is reset with the stand (28), and the arc sleeve (30) fits into the welding joint; the third motor (35) is started, and the second lead screw (34) drives the toothed plate (33) to drive the arc sleeve (30) to slide back and forth, polishing the welding joint.

Images