Automatic welding mechanism for rectangular metal pipe machining

Abstract

The application discloses a kind of automatic welding mechanisms for rectangular metal pipe fittings processing, including frame, feeding mechanism, feeding part, welding part, workpiece and suspension plate;The feeding part and welding part are distributed on the both sides of frame, and the feeding mechanism is arranged in the middle of frame;The workpiece is tubular object, and the upper bottom surface and the lower bottom surface of the workpiece are flat rectangular shape;The suspension plate is a rectangular metal plate with right-angle bending;The feeding mechanism is used to move the workpiece to the feeding position of feeding part and the welding position of welding part, the feeding part is used to place the suspension plate on the workpiece, and the welding part is used to weld the suspension plate and the workpiece together;The welding mechanism is divided into horizontal welding part and vertical welding part in the application, and fully automatic welding is realized through feeding mechanism.

Description

Technical Field

[0001] This invention is an automatic welding mechanism for processing rectangular metal tubes. Background Technology

[0002] The mechanization and automation of the welding process is a significant development in modern welding technology. It not only signifies higher welding production efficiency and better welding quality, but also greatly improves working conditions. In manual arc welding, the main actions are igniting the arc, feeding the electrode to maintain a certain arc length, moving the arc forward, and extinguishing the arc. If these actions are all performed automatically by a machine, it is called automatic welding.

[0003] In general pipe processing, there is a need to weld pipe fittings to other parts to connect them. For a strong weld, the edges of the contact surfaces between the parts and the pipe fittings need to be welded, requiring welding in different directions. Traditional automatic welding cannot perform welding in different directions, and it is also difficult to ensure that the relative positions of the parts and pipe fittings remain the same. Furthermore, the welding torch inevitably comes into contact with the parts during welding, which can cause the parts to shift and result in incomplete welding. In addition, the structure for fixing the welding torch is too simple, and the welding mechanism cannot adapt to various welding position requirements. Therefore, existing automatic welding devices cannot meet current welding requirements. Summary of the Invention:

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic welding mechanism for processing rectangular metal pipes.

[0005] An automatic welding mechanism for processing rectangular metal pipe fittings includes a main body, which includes a frame, a feeding mechanism, a loading section, a welding section, a processing part, and a suspension plate; the loading section and the welding section are both distributed on both sides of the frame, and the feeding mechanism is located in the middle of the frame.

[0006] The processed part is a tubular object, and the upper and lower bottom surfaces of the processed part are flat rectangular shapes; the suspension plate is a rectangular metal plate bent at right angles;

[0007] The feeding mechanism is used to transfer the workpiece to the feeding position of the feeding section and the welding position of the welding section. The feeding section is used to place the suspension plate on the workpiece, and the welding section is used to weld the suspension plate and the workpiece together.

[0008] The welding section includes a first welding section and a second welding section. The first welding section is used for lateral welding between the suspension plate and the workpiece. The first welding section includes a first welding torch, a lifting mechanism and a first translation mechanism. The lifting mechanism is used to control the first welding section to rise and fall, and the first translation mechanism is used to control the first welding section to perform lateral translation.

[0009] The second welding section is used for vertical welding between the suspension plate and the workpiece. The second welding section includes a second welding gun, a third welding gun, a second translation mechanism, and a lifting mechanism. The lifting mechanism is used to control the second welding section to rise and fall, and the second translation mechanism is used to control the first welding section to perform vertical translation.

[0010] In order to automatically place the suspension plate at a predetermined position on the workpiece, the feeding part includes a vibratory feeder, a lifting cylinder and a rotary cylinder, and the vibratory feeder includes a hopper, a chassis, a linear feeder and a storage bin.

[0011] A lifting cylinder is provided above the linear feeder. The lifting cylinder is fixed on the frame and connected to a rotary cylinder. The lifting cylinder is perpendicular to the upper surface of the frame, and the rotation plane of the rotary cylinder is parallel to the upper surface of the frame. The bottom of the rotary cylinder is connected to the middle of the rotating plate. The rotating plate is a long, straight plate-shaped object, and electromagnets are provided at both ends of the rotating plate.

[0012] To ensure that the welding part can achieve both horizontal and vertical pull welding, the first translation mechanism includes a mounting box, a sleeve plate, and a welding torch;

[0013] The mounting box is a box structure without a lid. The bottom surface of the mounting box is provided with a straight track. Both sides of the upper end face of the frame are provided with vertical supports. The bottom surface of the mounting box is fixedly connected to the inner side of the supports. The track is oriented from left to right. The upper end face of the mounting box is also provided with a cover plate.

[0014] The sleeve plate has a cuboid structure, with through holes on its side. The cover plate passes through the through holes, and a slider is provided on the bottom surface of the sleeve plate. The slider cooperates with a slide rail inside the mounting box. One side of the sleeve plate is connected to a cylinder for pushing the sleeve plate to move along the track.

[0015] The lifting mechanism includes a lifting cylinder, which is fixed to the upper end face of the sleeve plate. The lifting cylinder is perpendicular to the upper end face of the frame and faces the upper end face of the frame. The lifting cylinder is connected to the first welding gun through a fixing mechanism.

[0016] The second welding section includes a second welding torch, a third welding torch, a second translation mechanism, and a lifting mechanism.

[0017] The second translation mechanism includes a mounting box and a sleeve plate. The bottom surface of the mounting box is connected to the top surface of the bracket and is parallel to the top surface of the second section of the frame. The track inside the mounting box is oriented from front to back. The cover plate on the top surface of the mounting box passes through the through hole on the side of the sleeve plate. One side of the sleeve plate is connected to a cylinder for pushing the sleeve plate to move along the track. A connecting column is fixed on the top surface of the sleeve plate and the connecting column is connected to the cylinder fixing plate.

[0018] The lifting mechanism includes two lifting cylinders, which are symmetrically installed on both sides of the cylinder fixing plate. The lifting cylinders are perpendicular to the upper end face of the frame and face the upper end face of the frame. The second welding gun and the third welding gun are respectively connected to the lifting cylinders through the fixing mechanism.

[0019] To ensure the welding torch can be stably connected to the lifting mechanism and to adapt to different welding requirements by changing the welding position, the fixing mechanism includes a fixing base. The side of the fixing base has a through hole through which a first fixing connecting rod is fixedly inserted. A first fixing sleeve is fitted onto the first fixing connecting rod. A fixing block is provided on the outer side of the first fixing sleeve. The fixing block is connected to a fixing block on a second fixing sleeve by bolts. A second fixing connecting rod is inserted into the second fixing sleeve. A third fixing sleeve is provided at the bottom of the second fixing connecting rod. A third fixing connecting rod is inserted into the third fixing sleeve and embedded in a mounting block. The bottom of the mounting block has a rotating column that can rotate around an axis. The outer side of the connecting column has a through hole through which one end of a second or third welding torch is fixedly connected.

[0020] To prevent damage to other components during welding, a splash guard is provided around the welded portion.

[0021] To ensure stable feeding of the material and to maintain the relative position of the suspension plate and the workpiece, thus preventing errors in the feeding mechanism, the feeding mechanism includes a left feeding mechanism and a right feeding mechanism. The left and right feeding mechanisms are symmetrically arranged on the upper surface of the frame. The left and right feeding mechanisms have the same structure. Gear chain mounting parts are provided on both the left and right sides of the frame. The left feeding mechanism includes a feeding clamp and a gear chain mechanism.

[0022] The gear chain mechanism includes a first gear chain mechanism and a second gear chain mechanism. The frame has a gear chain mounting part that penetrates the front end face and the rear end face of the first section of the frame in the middle. The gear chain mounting part has a first mounting plate and a second mounting plate, which are arranged face to face.

[0023] The first gear chain mechanism and the second gear chain mechanism both include a front gear and a rear gear. The front gear and the rear gear are respectively fixedly nested on two transmission shafts. The two transmission shafts are respectively fixed at both ends between the first mounting plate and the second mounting plate. The transmission shafts can rotate. A chain is provided between the front gear and the rear gear. One end of the chain cooperates with the front gear, and the other end of the chain cooperates with the rear gear. Multiple clamp mounting plates are provided equidistantly on the chain.

[0024] The feeding fixture includes a mounting tube, a first fixture, and a second fixture. Both ends of the mounting tube are connected to the fixture mounting plates on the first and second gear chain mechanisms. The mounting tube is perpendicular to the plane containing the gear chain mechanisms. The first fixture is a cuboid with a groove penetrating its front and rear ends on its upper surface. The first fixture is used to place the workpiece. The second fixture includes a front stop and a rear stop, both fixed to a base plate. The front stop is a cuboid with a groove penetrating its front and rear ends on its upper surface. Hemispherical protrusions are provided on the inner walls of both sides of the groove.

[0025] The rear stop block is a cuboid, and the edges between the front and upper faces of the rear stop block are rounded. There is a predetermined gap between the front and rear stops. The second clamp is used to limit the suspension plate. The first clamp is located directly in front of the second clamp. The first and second clamps are fixed to the upper face of the mounting tube. The two ends of the mounting tube are respectively connected to the mounting plates symmetrically positioned on the first and second sprocket mechanisms. The number of feeding clamps is at least three, and the feeding clamps are equidistantly spaced between the first and second sprocket mechanisms.

[0026] To ensure the workpiece does not move during welding, thus preventing welding position errors, a limiting fixture is also included. This limiting fixture comprises a first limiting fixture and a second limiting fixture. The first limiting fixture includes a mounting rod, which is positioned directly above the machining area of ​​the first welding part. The bottom of the mounting rod has two perpendicular features.

[0027] One of the cylinders is used to press against the upper end face of the suspension plate during processing, and the bottom of the other cylinder is provided with an upper clamp. The upper clamp is a cuboid structure, and the lower end face of the upper clamp is provided with a groove that matches the shape of the workpiece. The upper clamp is located directly above the first clamp of the feeding mechanism.

[0028] Beneficial effects: Compared with the prior art, the present invention divides the welding mechanism into a feeding part and a welding part. The feeding part uses a vibratory feeder to feed the material. When the hanging plate moves to the linear feeder, it is attracted by the electromagnet above. The rotating plate is controlled to rotate by the rotating cylinder. The hanging plate is placed in a predetermined position by the lifting cylinder. Then, it is moved to the welding part by the feeding mechanism for welding.

[0029] Both ends of the rotating plate are equipped with electromagnets. Therefore, after rotating to the appropriate position, the lifting cylinder descends, which can simultaneously adsorb the hanging plate at one end and place the hanging plate at the other end. After placement, the rotating plate is rotated again to adsorb and place the plate. This process is repeated. Compared with using only one end to adsorb and place the material, working at both ends at the same time effectively improves work efficiency.

[0030] To securely weld the suspension plate to the pipe opening, three edges of the contact surface between the suspension plate and the workpiece need to be welded. These three edges are one horizontal and two vertical. Using a welding gun to perform pull welding in two directions places excessively high precision requirements on the machine structure. Furthermore, this type of automatic welding mechanism has very limited applicability and can only be used for workpieces with the same processing requirements.

[0031] Therefore, the present invention divides the welding work into horizontal welding and vertical welding. Horizontal welding is connected by a first translation mechanism and a lifting mechanism. The lifting mechanism is connected to the welding gun in a fixed structure. During welding, the first translation mechanism and the lifting mechanism move to a suitable position. At the same time as the welding gun is started, the first translation mechanism drives the first welding part to move horizontally to achieve horizontal pull welding.

[0032] Vertical welding is connected by a second translation mechanism and a lifting mechanism. The lifting mechanism is connected to the welding gun through a fixed structure. When the welding gun moves to the appropriate position, the second translation mechanism drives the second welding part to move in the back and forth direction to achieve vertical welding. The second welding part includes two symmetrically arranged welding guns, a second welding gun and a third welding gun, which can simultaneously weld the vertical edges on both sides of the suspension plate, thus improving work efficiency.

[0033] The fixing structure includes a fixing base, a connecting sleeve assembly, and a fixing connecting rod assembly. The first, second, and third welding torches are connected to a connecting column that can rotate around an axis. The connecting column is fixed to a mounting block, and a third fixing connecting rod is embedded within the mounting block. The third fixing connecting rod is connected to a second fixing connecting rod by being embedded in a third fixing sleeve. The second connecting rod is located within the second fixing sleeve, and the height of the welding torches can be adjusted by adjusting the position of the second connecting rod within the second fixing sleeve.

[0034] The second fixing sleeve is connected to the fixing block of the first fixing sleeve by bolts through a fixing block. Therefore, the angle between the second fixing sleeve and the first fixing sleeve can be adjusted to change the relative angle of the second fixing connecting rod. The first fixing sleeve is fitted onto the first fixing connecting rod, and the first fixing connecting rod is installed laterally in the through hole on the side of the fixing seat. By adjusting the position of the fixing sleeve, the lateral position of the welding gun can be changed. Through the fixing structure, the actual working position of the welding gun can be adjusted to adapt to different processing requirements. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of an integrated automated device for processing rectangular metal tubes;

[0036] Figure 2 This is a schematic diagram of the frame of an integrated automated device for processing rectangular metal tubes;

[0037] Figure 3 This is a schematic diagram of the first feeding mechanism;

[0038] Figure 4 This is a schematic diagram of the second feeding mechanism;

[0039] Figure 5 The diagram shows the transition frame;

[0040] Figure 6 This is a side view of the transition frame;

[0041] Figure 7 This is a schematic diagram of the arc-shaped punching mechanism;

[0042] Figure 8 This is a schematic diagram of the burr roller brush mechanism;

[0043] Figure 9 This is a schematic diagram of the material feeding section in the welding mechanism;

[0044] Figure 10 This is a schematic diagram of the first welding section in the welding mechanism;

[0045] Figure 11 This is a schematic diagram of the second welding section in the welding mechanism;

[0046] Figure 12 This is a schematic diagram of the first limit fixture;

[0047] Figure 13 This is a schematic diagram of the second limiting fixture;

[0048] Figure 14 This is a schematic diagram of a fixed structure;

[0049] Figure 15 This is a side view of the fixed mechanism;

[0050] Figure 16 This is a schematic diagram of the machined part;

[0051] Figure 17 This is a schematic diagram of the suspension plate;

[0052] In the diagram, 1. Frame, 2. Arc-shaped punching mechanism, 3. Feeding bin, 4. Burr roller brush mechanism, 5. Transition frame, 6. Welding mechanism, 7. Sliding frame, 8. Unloading bin, 9. First section, 10. Connecting section, 11. Second section, 12. Rear gear, 13. Drive shaft, 14. Chain, 15. Limiting bracket, 16. Mounting tube, 17. Gripper, 18. Front gear, 19. Left second feeding mechanism, 20. First feeding fixture, 21. Front stop, 22. Rear stop, 23. Splash guard, 24. Upper frame, 25. Lower frame, 26. Electromagnetic adsorption device, 27. Platform, 28. Cylinder, 29. Frame plate, 30. Mounting base, 31. Connecting column, 32. Connecting block, 33. Pressure plate, 34. Angled pressure block, 35. Slider seat, 36. Slider, 37. Punching 38. Base, 39. Positioning clamp, 40. Second transmission gear, 41. Motor, 42. First transmission gear, 43. Housing, 44. Brush wheel, 45. Platform, 46. Vibratory feeder, 47. Linear feeder, 48. Lifting cylinder, 49. Rotary cylinder, 50. Rotary plate, 51. Electromagnet, 52. Mounting box, 53. Sleeve plate, 54. Lifting mechanism, 55. First welding torch, 56. Cover plate, 57. Second welding torch, 58. Third welding torch, 59. Mounting rod, 60. Upper clamp, 61. Fixed seat, 62. First fixed connecting rod, 63. First fixed sleeve, 64. Second fixed sleeve, 65. Third fixed sleeve, 66. Mounting block, 67. Rotating column, 68. Third fixed connecting rod, 69. Machined part, 70. Suspension plate. Detailed Implementation

[0053] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0054] like Figure 1-15As shown, the components are: 1. Frame; 2. Arc-cutting mechanism; 3. Feeding bin; 4. Burr roller brush mechanism; 5. Transition frame; 6. Welding mechanism; 7. Sliding frame; 8. Unloading bin; 9. First section; 10. Connecting section; 11. Second section; 12. Rear gear; 13. Drive shaft; 14. Chain; 15. Limiting bracket; 16. Mounting tube; 17. Gripper; 18. Front gear; 19. Left second feeding mechanism; 20. First feeding fixture; 21. Front stop; 22. Rear stop; 23. Splash guard; 24. Upper frame; 25. Lower frame; 26. Electromagnetic adsorption device; 27. Platform; 28. Cylinder; 29. ​​Frame plate; 30. Mounting base; 31. Connecting column; 32. Connecting block; 33. Pressure plate; 34. Inclined pressure block; 35. Slider seat; 36. Slider; 37. Punching base. Positioning fixture 38, second transmission gear 39, motor 40, first transmission gear 41, housing 42, roller brush wheel 43, pad 44, vibratory feeder 45, linear feeder 46, lifting cylinder 47, rotary cylinder 48, rotating plate 49, electromagnet 50, mounting box 51, sleeve plate 52, lifting mechanism 53, first welding gun 54, cover plate 55, second welding gun 56, third welding gun 57, mounting rod 58, upper fixture 59, fixed seat 60, first fixed connecting rod 61, first fixed sleeve 62, second fixed sleeve 63, second fixed connecting rod 64, third fixed sleeve 65, mounting block 66, rotating column 67, third fixed connecting rod 68, machined part 69, suspension plate 70;

[0055] An integrated automated device for processing rectangular metal pipe fittings includes a main body, which includes a processing component 69, a suspension plate 70, a frame 1, a transfer mechanism, at least two arc-shaped punching mechanisms 2, a burr roller brush mechanism 4, and a welding mechanism 6.

[0056] The processed part 69 is a tubular object, and the upper and lower bottom surfaces of the processed part 69 are flat rectangular shapes; the suspension plate 70 is a rectangular metal plate bent at right angles;

[0057] The arc-shaped punching mechanism 2 is used to perform arc-shaped punching on both sides of the opening of the workpiece 69;

[0058] The burr roller brush mechanism 4 is used to remove burrs from the pipe opening after arc punching.

[0059] The welding mechanism 6 is used to weld the suspension plate 70 to the upper bottom surface of the workpiece 69;

[0060] The aforementioned transfer mechanism is used to move the workpiece 69 to the processing area of ​​the processing mechanism for processing;

[0061] For details of the framework 1, please refer to [link / reference]. Figure 2 ;

[0062] In this embodiment, the transplanting mechanism includes a feeding bin 3, a discharging bin 8, a first feeding mechanism, and a second feeding mechanism;

[0063] The aforementioned feeding hopper 3 includes an inclined hopper and a vertical hopper, as detailed below. Figure 1 ;

[0064] The material feeding bin 8 is a flat support frame with a height lower than that of the frame 1. An arc-shaped sliding frame 7 is provided between the material feeding bin 8 and the second section 11 of the frame 1.

[0065] The first feeding mechanism is detailed in [link to details]. Figure 3 ;

[0066] For details of the connecting segment 10, see Figure 5 ;

[0067] The second feeding mechanism includes a left second feeding mechanism 19 and a right second feeding mechanism, which are symmetrically arranged on the upper surface of the third section of the frame 1. The left second feeding mechanism 19 and the right second feeding mechanism have the same structure. Gear chain mounting parts are provided on the left and right sides of the third section of the frame 1. The left second feeding mechanism 19 includes a second feeding clamp and a gear chain mechanism, which is installed in the sprocket mounting part. The second loading mechanism is the feeding mechanism mentioned in this invention.

[0068] The second feeding fixture includes a mounting tube 16, a first fixture, and a second fixture. The first fixture is a cuboid with a groove on its upper surface that extends through its front and rear ends. The first fixture is used to place the workpiece 69. The second fixture includes a front stop 21 and a rear stop 22, both of which are fixed to the base plate. The front stop 21 is a cuboid with a groove on its upper surface that extends through its front and rear ends. Hemispherical protrusions are provided on the inner walls of both sides of the groove.

[0069] The rear stop block 22 is a cuboid, and the edges between the front end face and the upper end face of the rear stop block 22 are provided with a rounded corner structure. There is a predetermined gap between the front stop block 21 and the rear stop block 22. The second clamp is used to limit the suspension plate 70. The first clamp is located directly in front of the second clamp. The first clamp and the second clamp are fixed to the upper end face of the mounting tube 16. The two ends of the mounting tube 16 are respectively connected to the mounting plates symmetrically positioned on the first sprocket mechanism and the second sprocket mechanism. The number of second feeding clamps is at least three, and the second feeding clamps are equidistantly arranged between the first sprocket mechanism and the second sprocket mechanism.

[0070] In this embodiment, the transition frame 5 includes an upper frame 24 and a lower frame 25, which are placed in parallel. The upper frame 24 is located above the lower frame 25. The upper frame 24 is provided with at least two cylinders 28 for buffering the slipping workpiece 69. The cylinders 28 are perpendicular to the lower frame 25, and the working direction of the cylinders 28 is towards the lower frame 25. The line connecting the cylinders 28 is parallel to the first clamp.

[0071] In this embodiment, the arc-shaped punching mechanism 2 is detailed in [reference needed]. Figure 7 ;

[0072] In this embodiment, the burr roller brush mechanism 4 is detailed in [reference needed]. Figure 8 ;

[0073] In this embodiment, the welding mechanism 6 includes a feeding part and a welding part;

[0074] The feeding section includes a vibratory feeder 45, a lifting cylinder 47, and a rotary cylinder 48. The vibratory feeder 45 includes a hopper, a chassis, a linear feeder 46, and a storage bin. The lifting cylinder 47 is located above the linear feeder 46 and is fixed to the frame 1. The lifting cylinder 47 is connected to the rotary cylinder 48 and is perpendicular to the upper surface of the frame 1. The rotation plane of the rotary cylinder 48 is parallel to the upper surface of the frame 1. The bottom of the rotary cylinder 48 is connected to the middle of the rotating plate 49. The rotating plate 49 is a long, straight plate and has electromagnets 50 at both ends.

[0075] The welding section includes a first welding section and a second welding section. The first welding section includes a first welding torch 54, a lifting mechanism 53 and a first translation mechanism. The translation mechanism includes a mounting box 51, a sleeve plate 52 and a welding torch.

[0076] The mounting box 51 is a box structure without a lid. The bottom surface of the mounting box 51 is provided with a straight track. Both sides of the upper end face of the second section 11 of the frame 1 are provided with vertical supports. The bottom surface of the mounting box 51 is fixedly connected to the inner side of the supports. The track is oriented from left to right. The upper end face of the mounting box 51 is also provided with a cover plate 55.

[0077] The sleeve plate 52 has a cuboid structure. A through hole is provided on the side of the sleeve plate 52, and the cover plate 55 passes through the through hole. A slider is provided on the bottom surface of the sleeve plate 52, and the slider cooperates with a slide rail inside the mounting box 51. One side of the sleeve plate 52 is connected to a cylinder 28 for pushing the sleeve plate 52 along the track.

[0078] The lifting mechanism 53 includes a lifting cylinder 47, which is fixed to the upper end face of the sleeve plate 52. The lifting cylinder 47 is perpendicular to the upper end face of the frame 1 and faces the upper end face of the frame 1. The lifting cylinder 47 is connected to the first welding gun 54 through a fixing mechanism.

[0079] The second welding section includes a second welding torch 56, a third welding torch 57, a second translation mechanism, and a lifting mechanism 53.

[0080] The second translation mechanism includes a mounting box 51 and a sleeve plate 52. The bottom surface of the mounting box 51 is connected to the top surface of the bracket and is parallel to the top surface of the second section 11 of the frame 1. The track inside the mounting box 51 is oriented from front to back. The cover plate 55 on the top surface of the mounting box 51 passes through the through hole on the side of the sleeve plate 52. One side of the sleeve plate 52 is connected to a cylinder 28 for pushing the sleeve plate 52 to move along the track. A connecting column 31 is fixed on the top surface of the sleeve plate 52 and is connected to the cylinder 28 fixing plate.

[0081] The lifting mechanism 53 includes two lifting cylinders 47, which are symmetrically installed on both sides of the cylinder 28 fixing plate. The lifting cylinders 47 are perpendicular to the upper end face of the frame 1 and face the upper end face of the frame 1. The second welding gun 56 and the third welding gun 57 are respectively connected to the lifting cylinders 47 through the fixing mechanism. The welding part is surrounded by a splash guard 23.

[0082] In this embodiment, a limiting fixture is also included. The limiting fixture includes a first limiting fixture and a second limiting fixture. The first limiting fixture includes a mounting rod 58, which is located directly above the processing area of ​​the first welding part. The bottom of the mounting rod 58 is provided with two cylinders perpendicular to the mounting rod 58. One cylinder 28 is used to press against the upper end face of the suspension plate 70 during processing. The bottom of the other cylinder 28 is provided with an upper clamp 59. The upper clamp 59 has a cuboid structure. The lower end face of the upper clamp 59 is provided with a groove that matches the shape of the workpiece 69. The upper clamp 59 is located directly above the first clamp of the second feeding mechanism.

[0083] In this embodiment, the fixing mechanism includes a fixing base 60, a through hole on the side of the fixing base 60, a first fixing connecting rod 61 passing through the through hole, a first fixing sleeve 62 fitted on the first fixing connecting rod 61, a fixing block on the outer side of the first fixing sleeve 62, the fixing block being connected to the fixing block on the second fixing sleeve 63 by bolts, a second fixing connecting rod 64 passing through the second fixing sleeve 63, a third fixing sleeve 65 at the bottom of the second fixing connecting rod 64, a third fixing connecting rod 68 passing through the third fixing sleeve 65, the third fixing connecting rod 68 being embedded in the mounting block 66, a rotating column 67 rotatable around an axis at the bottom of the mounting block 66, a through hole on the outer side of the connecting column 31, and one end of a second welding torch 56 or a third welding torch 57 fixedly connected to the through hole.

[0084] Instructions for use: Place the workpiece 69 on the inclined hopper. The workpiece falls from the inclined hopper to the vertical hopper. The transfer mechanism moves the workpiece 69 to the processing position of the arc-shaped punching mechanism 2. Then, the cylinder 28 pushes the base plate to move the arc-shaped punching mechanism 2 forward as a whole. The end of the workpiece 69 is fitted onto the positioning fixture 38. At the same time, the bench press operates.

[0085] After the cutting is completed, the slider is reset by the elastic reset component. At the same time, the cylinder 28 of the unloading mechanism moves forward, the first push rod and the second push rod push the workpiece 69 out, and the cylinder 28 connected to the base plate pulls the punching mechanism to move backward to realize the unloading.

[0086] Afterwards, the first feeding mechanism delivers the workpiece 69 to the processing area of ​​the deburring brush mechanism 4. The wire wheel removes the burrs from the punched area of ​​the pipe opening. Once completed, the first feeding mechanism continues to move the workpiece 69 forward. When it reaches the transition frame 5, the working range of the first feeding mechanism ends. At this point, inertia is used to transfer the workpiece 69 onto the transition frame 5, where it slides down onto the platform 27.

[0087] After the workpiece 69 falls onto the platform 27, the cylinder 28 pushes the platform 27 forward. The electromagnet 50 above the platform 27 descends via the lifting cylinder 47 to attract the workpiece 69. Subsequently, the platform 27 moves backward via the cylinder 28, and the electromagnet 50 descends again via the cylinder 28 to place the workpiece 69 into the fixture of the second feeding mechanism. The second fixture is used to limit the suspension plate 70. The suspension plate 70 has a right-angle bend structure and is therefore divided into two sections. One section is connected to the upper end face of the workpiece 69, and the other section is suspended. The suspended section is located between the front stop 21 and the rear stop 22 of the second fixture. At the same time, the suspension plate 70 is also located in the groove on the upper end face of the front stop 21. The groove limits the lateral freedom of the suspension plate 70, while the front stop 21 and the rear stop 22 limit the front and rear freedom. The protrusions on the inner wall of the groove limit the vertical freedom.

[0088] Furthermore, the suspension plate 70 is fed through the feeding part of the welding mechanism 6. The electromagnet 50 moves up and down through the lifting mechanism 53 to attract the suspension plate 70. Then, the suspension plate 70 is positioned above the workpiece 69 by the rotating cylinder. The suspension plate 70 is then placed on the workpiece 69 by the lifting cylinder. After that, the workpiece 69 and the suspension plate 70 are sent to the first welding part and the second welding part for welding reinforcement by the second feeding mechanism. Finally, the workpiece 69 and the suspension plate 70 are sent into the slide frame 7 by the second feeding mechanism and slide into the unloading bin 8.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic welding mechanism for processing rectangular metal pipe fittings, comprising a main body, characterized in that, The main body includes a frame, a feeding mechanism, a loading section, a welding section, a processed part, and a suspension plate; the loading section and the welding section are both distributed on both sides of the frame, and the feeding mechanism is located in the middle of the frame; The processed part is a tubular object, and the upper and lower bottom surfaces of the processed part are flat rectangular shapes; the suspension plate is a rectangular metal plate bent at right angles; The feeding mechanism is used to transfer the workpiece to the feeding position of the feeding section and the welding position of the welding section. The feeding section is used to place the suspension plate on the workpiece, and the welding section is used to weld the suspension plate and the workpiece together. The welding section includes a first welding section and a second welding section. The first welding section is used for lateral welding between the suspension plate and the workpiece. The first welding section includes a first welding torch, a lifting mechanism and a first translation mechanism. The lifting mechanism is used to control the first welding section to rise and fall, and the first translation mechanism is used to control the first welding section to perform lateral translation. The second welding section is used for vertical welding between the suspension plate and the workpiece. The second welding section includes a second welding gun, a third welding gun, a second translation mechanism, and a lifting mechanism. The lifting mechanism is used to control the second welding section to rise and fall, and the second translation mechanism is used to control the second welding section to perform vertical translation. The feeding mechanism includes a left feeding mechanism and a right feeding mechanism, which are symmetrically arranged on the upper surface of the frame. The left feeding mechanism and the right feeding mechanism have the same structure. The left and right sides of the frame are provided with gear chain mounting parts. The left feeding mechanism includes a feeding clamp and a gear chain mechanism. The gear chain mechanism includes a first gear chain mechanism and a second gear chain mechanism. The frame has a gear chain mounting part that penetrates the front end face and the rear end face of the first section of the frame in the middle. The gear chain mounting part has a first mounting plate and a second mounting plate, which are arranged face to face. The first gear chain mechanism and the second gear chain mechanism both include a front gear and a rear gear. The front gear and the rear gear are respectively fixedly nested on two transmission shafts. The two transmission shafts are respectively fixed at both ends between the first mounting plate and the second mounting plate. The transmission shafts can rotate. A chain is provided between the front gear and the rear gear. One end of the chain cooperates with the front gear, and the other end of the chain cooperates with the rear gear. Multiple clamp mounting plates are provided equidistantly on the chain. The feeding fixture includes a mounting tube, a first fixture, and a second fixture. Both ends of the mounting tube are connected to the fixture mounting plates on the first and second gear chain mechanisms. The mounting tube is perpendicular to the plane containing the gear chain mechanisms. The first fixture is a cuboid with a groove penetrating its front and rear ends on its upper surface. The first fixture is used to place the workpiece. The second fixture includes a front stop and a rear stop, both fixed to a base plate. The front stop is a cuboid with a groove penetrating its front and rear ends on its upper surface. Hemispherical protrusions are provided on the inner walls of both sides of the groove. The rear stop block is a cuboid, and the edges between the front and upper faces of the rear stop block are rounded. There is a predetermined gap between the front and rear stops. The second clamp is used to limit the suspension plate. The first clamp is located directly in front of the second clamp. The first and second clamps are fixed to the upper face of the mounting tube. The two ends of the mounting tube are respectively connected to the mounting plates symmetrically positioned on the first and second sprocket mechanisms. The number of feeding clamps is at least three, and the feeding clamps are equidistantly spaced between the first and second sprocket mechanisms.

2. The automatic welding mechanism for processing rectangular metal pipe fittings according to claim 1, characterized in that, The feeding section includes a vibratory feeder, a lifting cylinder, and a rotary cylinder. The vibratory feeder includes a hopper, a chassis, a linear feeder, and a storage bin. A lifting cylinder is provided above the linear feeder. The lifting cylinder is fixed on the frame and connected to a rotary cylinder. The lifting cylinder is perpendicular to the upper surface of the frame, and the rotation plane of the rotary cylinder is parallel to the upper surface of the frame. The bottom of the rotary cylinder is connected to the middle of the rotating plate. The rotating plate is a long, straight plate, and electromagnets are provided at both ends of the rotating plate.

3. The automatic welding mechanism for processing rectangular metal pipe fittings according to claim 1, characterized in that, The first translation mechanism includes a mounting box, a sleeve plate, and a welding torch; The mounting box is a box structure without a lid. The bottom surface of the mounting box is provided with a straight track. Both sides of the upper end face of the frame are provided with vertical supports. The bottom surface of the mounting box is fixedly connected to the inner side of the supports. The track is oriented from left to right. The upper end face of the mounting box is also provided with a cover plate. The sleeve plate has a cuboid structure, with through holes on its side. The cover plate passes through the through holes, and a slider is provided on the bottom surface of the sleeve plate. The slider cooperates with a slide rail inside the mounting box. One side of the sleeve plate is connected to a cylinder for pushing the sleeve plate to move along the track. The lifting mechanism includes a lifting cylinder, which is fixed to the upper end face of the sleeve plate. The lifting cylinder is perpendicular to the upper end face of the frame and faces the upper end face of the frame. The lifting cylinder is connected to the first welding gun through a fixing mechanism. The second translation mechanism includes a mounting box and a sleeve plate. The bottom surface of the mounting box is connected to the top surface of the bracket and is parallel to the top surface of the second section of the frame. The track inside the mounting box is oriented from front to back. The cover plate on the top surface of the mounting box passes through the through hole on the side of the sleeve plate. One side of the sleeve plate is connected to a cylinder for pushing the sleeve plate to move along the track. A connecting column is fixed on the top surface of the sleeve plate and the connecting column is connected to the cylinder fixing plate. The lifting mechanism includes two lifting cylinders, which are symmetrically installed on both sides of the cylinder fixing plate. The lifting cylinders are perpendicular to the upper end face of the frame and face the upper end face of the frame. The second welding gun and the third welding gun are respectively connected to the lifting cylinders through the fixing mechanism.

4. The automatic welding mechanism for processing rectangular metal pipe fittings according to claim 3, characterized in that, The fixing mechanism includes a fixing base with a through hole on its side. A first fixing connecting rod is fixedly inserted through the through hole. A first fixing sleeve is fitted onto the first fixing connecting rod. A fixing block is provided on the outer side of the first fixing sleeve. The fixing block is connected to a fixing block on a second fixing sleeve by bolts. A second fixing connecting rod is inserted inside the second fixing sleeve. A third fixing sleeve is provided at the bottom of the second fixing connecting rod. A third fixing connecting rod is inserted inside the third fixing sleeve. The third fixing connecting rod is embedded in a mounting block. A rotating column that can rotate around an axis is provided at the bottom of the mounting block. A through hole is provided on the outer side of the rotating column. One end of a second welding torch or a third welding torch is fixedly connected to the through hole.

5. The automatic welding mechanism for processing rectangular metal pipe fittings according to claim 1, characterized in that, A splash guard is provided around the welded portion.

6. The automatic welding mechanism for processing rectangular metal pipe fittings according to claim 1, characterized in that, It also includes a limiting fixture, which comprises a first limiting fixture and a second limiting fixture. The first limiting fixture includes a mounting rod, which is positioned directly above the machining area of ​​the first welding part. The bottom of the mounting rod is provided with two cylinders perpendicular to the mounting rod. One of the cylinders is used to press against the upper end face of the suspension plate during processing, and the bottom of the other cylinder is provided with an upper clamp. The upper clamp is a cuboid structure, and the lower end face of the upper clamp is provided with a groove that matches the shape of the workpiece. The upper clamp is located directly above the first clamp of the feeding mechanism.

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