Thin-wall plate and thin-wall pipe fillet weld welding equipment

Abstract

The invention discloses fillet weld welding equipment for a thin-walled plate and a thin-walled tube, which belongs to the technical field of welding processing, and has the technical key points that the fillet weld welding equipment comprises a bottom plate and a support frame, and the clamping range and the clamping force can be flexibly adjusted according to thin-walled tubes with different tube diameter specifications through an arranged tube butting mechanism; in addition, supporting, positioning and clamping of the inner diameter can be cooperatively matched with a clamping and positioning structure of the outer diameter, the clamping stability of the thin-walled tube is further improved, meanwhile, rotation of the thin-walled tube does not need to be controlled through manual assistance due to the rotatable operation mode, the labor intensity of operators is greatly reduced, thin-walled plates can be conveniently taken and discharged one by one through the arranged plate positioning mechanism, and the working efficiency is improved. The blanking efficiency and precision are greatly improved, the structural integrity of the thin-wall plate is protected, meanwhile, the thin-wall plate can be smoothly subjected to butt welding with the thin-wall pipe after being blanked, the butt welding precision and welding quality are greatly improved, the production period is shortened, and the advantages that blanking butt welding of the thin-wall plate is facilitated, butt welding of the thin-wall pipe is controlled, and the welding machining efficiency is high are achieved.

Description

Technical Field

[0001] This invention relates to the field of welding processing, specifically to a welding equipment for fillet welds between thin-walled plates and thin-walled tubes. Background Technology

[0002] In many fields such as aerospace, automobile manufacturing, home appliance production, engineering machinery and fluid transportation, the fillet weld connection structure of thin-walled plates and thin-walled tubes is widely used in the processing and manufacturing of various parts due to its significant advantages of lightweight, high strength and material saving.

[0003] Currently, the welding of fillet welds between thin-walled plates and thin-walled tubes largely relies on traditional manual welding, semi-automatic welding equipment, or simple special welding devices. In practical applications, these devices struggle to effectively address the technical challenges of rotating and supporting the welding of thin-walled tubes, severely hindering improvements in welding quality and production efficiency. On one hand, existing welding equipment is generally inconvenient for controlling the rotation of thin-walled tubes and for achieving stable support during the welding process, resulting in low precision and poor forming quality of fillet welds. On the other hand, existing welding equipment is not suitable for individually cutting thin-walled plates and for butt welding between thin-walled plates and tubes, further limiting welding production efficiency and product qualification rates. The lack of continuity between cutting and butt welding makes it difficult to achieve integrated operations of cutting, butt welding, and welding. Especially in mass production scenarios, this decentralized operation mode leads to chaotic production rhythms, hindering efficiency and failing to meet actual usage requirements.

[0004] Therefore, there is a need to provide a welding device for fillet welds between thin-walled plates and thin-walled tubes, which aims to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a welding device for fillet welds of thin-walled plates and thin-walled tubes, which aims to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A welding device for fillet welds between thin-walled plates and thin-walled tubes includes a base plate and a support frame. Several vertically placed thin-walled plates are mounted on the support frame. Thin-walled tubes to be welded are placed on the base plate. Welding robots for welding are mounted on both sides of the base plate. The device also includes: A pipe docking mechanism, mounted on a base plate, is used for clamping, positioning, and rotating thin-walled pipes. The pipe docking mechanism includes a first movable seat for positioning support and an inner clamping plate for end-clamping rotation control. A first clamping guide wheel and a third clamping guide wheel for positioning support are movably mounted on the first movable seat. The first clamping guide wheel is movably mounted inside the first movable seat via a limiting rotating rod. The third clamping guide wheel is rotatably mounted on a first wedge. The limiting rotating rod controls the clamping by raising and lowering the first wedge. A sheet metal positioning mechanism is mounted on a base plate and is used to position, clamp, and flip the unloaded thin-walled sheet metal for welding. The sheet metal positioning mechanism includes a clamping plate mechanism for positioning and flipping the sheet metal. The clamping plate mechanism is rotatably mounted on a third movable seat via a third connecting shaft. A sheet metal unloading mechanism, mounted on a support frame, is used to pick up thin-walled sheets from the support frame and place them parallel to the clamping plate mechanism for positioning. The sheet metal unloading mechanism includes an electric suction cup for gripping and unloading, and a first unloading rod and a second unloading rod for material handling control. The first unloading rod is movably mounted on the support frame, and the second unloading rod is fixedly mounted on the first unloading rod, with an acute angle between the second unloading rod and the first unloading rod.

[0007] As a further embodiment of the present invention, the pipe docking mechanism further includes a second wedge for driving the limiting rotating rod to perform clamping control. The limiting rotating rod is rotatably mounted inside the first movable seat via a first connecting shaft. The first clamping guide wheel is rotatably mounted at one end of the limiting rotating rod, and the other end of the limiting rotating rod is rotatably mounted with a second clamping guide wheel. The first wedge has a first inclined surface adapted to slide and connect with the second clamping guide wheel. A traction rod is fixedly connected to the outer end of the limiting rotating rod, and a reset tension spring is mated and mounted on the traction rod. The second wedge is adapted to slide and connect to one side of the first wedge.

[0008] As a further embodiment of the present invention, the pipe docking mechanism further includes a first motor for driving the second wedge to move. The first wedge has a second inclined surface adapted to slide and connect the second wedge. The second wedge is threadedly connected to a first lead screw. The first lead screw is rotatably installed inside the first movable seat, and the first lead screw is fixedly connected to the output shaft of the first motor. The first motor is fixedly installed on the first movable seat.

[0009] As a further embodiment of the present invention, the pipe docking mechanism further includes a rotating gear for driving the first movable seat to move relative to it. A toothed plate is fixedly connected to the bottom of the first movable seat. The toothed plate is slidably connected to the second movable seat. A rotating gear is meshed on the toothed plate. The rotating gear is rotatably mounted inside the second movable seat through a second connecting shaft. A worm gear is also fixedly connected to the second connecting shaft. A worm is meshed on the worm gear. The worm is fixedly connected to the output shaft of a second motor. The second motor is fixedly mounted inside the second movable seat.

[0010] As a further embodiment of the present invention, the pipe docking mechanism further includes a third motor for driving the second movable seat to move linearly. The second movable seat is slidably connected to the base plate by a first guide rod. The first guide rod is fixedly installed on the base plate by a vertical plate. The second movable seat is also threadedly connected to a second lead screw. The second lead screw is rotatably installed on the vertical plate. The second lead screw is fixedly connected to the output shaft of the third motor. The third motor is fixedly installed on one side of the vertical plate.

[0011] As a further embodiment of the present invention, the pipe docking mechanism further includes an electric push rod for driving the inner clamping plate to clamp the inner pipe. One end of the first connecting rod and one end of the second connecting rod are hinged to the inner side of the inner clamping plate. The other end of the second connecting rod is hinged to a fixed column. The other end of the first connecting rod is hinged to a traction plate. The traction plate is fixedly connected to the piston rod of the electric push rod. The electric push rod is fixedly installed on the fixed column. The fixed column is fixedly installed on a rotating disk. The rotating disk is fixedly connected to the output shaft of a fourth motor. The fourth motor is fixedly installed on a vertical plate.

[0012] As a further embodiment of the present invention, the sheet positioning mechanism further includes a fifth motor for driving the third movable seat to move linearly, the third connecting shaft is fixedly connected to the output shaft of the sixth motor, the sixth motor is fixedly mounted on the third movable seat, a vertical limiting plate for vertical limiting is provided on one side of the third movable seat, the third movable seat is slidably connected to the fixed seat through the second guide rod, the fixed seat is fixedly mounted on one side of the first guide rod, the third movable seat is also threadedly connected to the third lead screw, the third lead screw is rotatably mounted on the fixed seat, the third lead screw is fixedly connected to the output shaft of the fifth motor, and the fifth motor is fixedly mounted on one side of the fixed seat.

[0013] As a further embodiment of the present invention, the sheet metal feeding mechanism further includes a first sprocket and a second sprocket for traction of the electric suction cup for flipping. The electric suction cup is fixedly installed on the suction cup bracket, and the suction cup bracket is rotatably installed at one end of the first feeding rod via a fourth connecting shaft. The first sprocket is also fixedly connected to the fourth connecting shaft. A chain is drivenly connected to the first sprocket and the second sprocket. The second sprocket is fixedly installed on the support frame, and the other end of the first feeding rod is rotatably installed at the center of the second sprocket via a fifth connecting shaft.

[0014] As a further embodiment of the present invention, the sheet metal feeding mechanism further includes a third feeding rod and a fourth feeding rod for driving the first feeding rod to rotate and pull. One end of the third feeding rod is rotatably mounted to one end of the second feeding rod via a sixth connecting shaft, and the other end of the third feeding rod is rotatably mounted to one end of the fourth feeding rod via a seventh connecting shaft. The other end of the fourth feeding rod is fixedly connected to an eighth connecting shaft, and the eighth connecting shaft is fixedly connected to the output shaft of a seventh motor. The seventh motor is fixedly mounted on a support frame.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: This invention, through its designed pipe-to-pipe docking mechanism, can flexibly adjust the clamping range and clamping force according to thin-walled pipes of different diameters, without the need to disassemble and replace the entire clamping assembly, making it highly versatile. In addition, the inner diameter support and positioning clamping can work in conjunction with the outer diameter clamping and positioning structure to form double fixed support, further improving the clamping stability of thin-walled pipes. It is especially suitable for the clamping needs of long pipe sections and large-diameter thin-walled pipes, effectively avoiding sagging and displacement caused by the weight of the long pipe section, ensuring the overall concentricity of the thin-walled pipe. At the same time, the rotatable operation method eliminates the need for manual assistance in controlling the rotation of the thin-walled pipe, greatly reducing the labor intensity of operators, and avoiding problems such as poor consistency and large errors caused by manual rotation operation, thereby improving the product qualification rate and consistency.

[0016] The designed sheet positioning mechanism facilitates the individual picking and unloading of thin-walled sheets, significantly improving unloading efficiency and accuracy while protecting the structural integrity of the sheets. Firstly, it offers convenient and efficient material handling, completely freeing up manpower and reducing labor intensity. Secondly, it provides high unloading accuracy and a unified positioning benchmark, laying a solid foundation for subsequent welding. Thirdly, it effectively protects the structural integrity of the thin-walled sheets, reducing workpiece wear. Furthermore, after unloading, the thin-walled sheets can be smoothly welded to thin-walled tubes, significantly improving welding precision and quality, shortening the production cycle, and greatly increasing production efficiency. This equipment achieves integrated automated control of individual sheet picking, unloading, welding, and unloading of thin-walled sheets, not only reducing the operational difficulty for operators but also correspondingly reducing direct contact between operators and the welding station, significantly improving operational safety.

[0017] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the invention.

[0019] Figure 2 This is a side view of an embodiment of the invention.

[0020] Figure 3 This is a schematic diagram of the clamping plate mechanism in a vertical position in an embodiment of the invention.

[0021] Figure 4 This is a schematic diagram of the clamping plate mechanism in a horizontal state in an embodiment of the invention.

[0022] Figure 5 This is a schematic diagram of the connection structure at the bottom of the first movable seat in an embodiment of the invention.

[0023] Figure 6 This is a schematic diagram of the state structure of the first movable seat positioning thin-walled tube in an embodiment of the invention.

[0024] Figure 7 This is a schematic diagram of the internal connection structure of the first movable seat in an embodiment of the invention.

[0025] Figure 8 This is a schematic diagram of the connection structure of the inner clamping plate in an embodiment of the invention.

[0026] Figure 9 This is a schematic diagram of the connection structure of the support frame in an embodiment of the invention.

[0027] Figure 10 This is a schematic diagram of the structure of the thin-walled plate being taken out and lowered in an embodiment of the invention.

[0028] Reference numerals in the attached drawings: 1. Base plate; 2. Thin-walled tube; 3. Limiting rotating rod; 4. First clamping guide wheel; 5. First connecting shaft; 6. Second clamping guide wheel; 7. Traction rod; 8. Reset tension spring; 9. First wedge; 10. Third clamping guide wheel; 11. First inclined plane; 12. Second inclined plane; 13. Second wedge; 14. First lead screw; 15. First motor; 16. First moving seat; 17. Gear plate; 18. Rotating gear; 19. Second connecting shaft; 20. Worm gear; 21. Worm; 22. Second motor; 23. Second moving seat; 24. First guide rod; 25. Second lead screw; 26. Third motor; 27. Vertical plate; 28. Rotary disk; 29. ​​Fourth motor; 30. Fixed column; 31. Electric push rod; 32. Traction plate; 33. First connecting rod; 34. Inner clamping plate; 35. Second connecting rod; 36. Fixed seat; 37. Second guide rod; 38. Third lead screw; 39. Fifth motor; 40. Third moving seat; 41. Vertical limiting plate; 42. Clamping plate mechanism; 43. Third connecting shaft; 44. Sixth motor; 45. Welding robot; 46. Support frame; 47. Thin-walled plate; 48. Electric suction cup; 49. Suction cup bracket; 50. Fourth connecting shaft; 51. First feeding rod; 52. First sprocket; 53. Chain; 54. Second sprocket; 55. Fifth connecting shaft; 56. Second feeding rod; 57. Sixth connecting shaft; 58. Third feeding rod; 59. Seventh connecting shaft; 60. Fourth feeding rod; 61. Eighth connecting shaft; 62. Seventh motor. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] See Figures 1 to 8 A welding device for fillet welds between thin-walled plates and thin-walled tubes includes a base plate 1 and a support frame 46. Several vertically placed thin-walled plates 47 are mounted on the support frame 46. A thin-walled tube 2 to be welded is placed on the base plate 1. Welding robots 45 for welding are mounted on both sides of the base plate 1. The device also includes: The pipe docking mechanism is mounted on the base plate 1 and is used to clamp, position, and rotate the thin-walled pipe 2. The pipe docking mechanism includes a first movable seat 16 for positioning support and an inner clamping plate 34 for end control of clamping rotation. The first movable seat 16 is movably mounted with a first clamping guide wheel 4 and a third clamping guide wheel 10 for positioning support. The first clamping guide wheel 4 is movably mounted inside the first movable seat 16 through a limiting rotating rod 3. The third clamping guide wheel 10 is rotatably mounted on a first wedge 9. The limiting rotating rod 3 performs clamping control through the lifting and lowering of the first wedge 9.

[0032] Furthermore, the pipe docking mechanism also includes a second wedge 13 for driving the limiting rotating rod 3 to perform clamping control. The limiting rotating rod 3 is rotatably installed inside the first moving seat 16 via the first connecting shaft 5. The first clamping guide wheel 4 is rotatably installed at one end of the limiting rotating rod 3, and the other end of the limiting rotating rod 3 is rotatably installed with a second clamping guide wheel 6. The first wedge 9 has a first inclined surface 11 adapted to slide and connect with the second clamping guide wheel 6. The outer end of the limiting rotating rod 3 is fixedly connected with a traction rod 7, and a reset tension spring 8 is mated and installed on the traction rod 7. The second wedge 13 is adapted to slide and connect to one side of the first wedge 9.

[0033] Furthermore, the pipe docking mechanism also includes a first motor 15 for driving the second wedge 13 to move. The first wedge 9 has a second inclined surface 12 adapted to slide and connect the second wedge 13. The second wedge 13 is threadedly connected to the first lead screw 14. The first lead screw 14 is rotatably installed inside the first moving seat 16, and the first lead screw 14 is fixedly connected to the output shaft of the first motor 15. The first motor 15 is fixedly installed on the first moving seat 16.

[0034] Furthermore, the pipe docking mechanism also includes a rotating gear 18 for driving the first moving seat 16 to move relative to the first moving seat 16. A toothed plate 17 is fixedly connected to the bottom of the first moving seat 16. The toothed plate 17 is slidably connected to the second moving seat 23. The rotating gear 18 is meshed on the toothed plate 17. The rotating gear 18 is rotatably mounted inside the second moving seat 23 through the second connecting shaft 19. A worm gear 20 is also fixedly connected to the second connecting shaft 19. A worm 21 is meshed on the worm gear 20. The worm 21 is fixedly connected to the output shaft of the second motor 22. The second motor 22 is fixedly mounted inside the second moving seat 23.

[0035] Furthermore, the pipe docking mechanism also includes a third motor 26 for driving the second moving seat 23 to move linearly. The second moving seat 23 is slidably connected to the base plate 1 via a first guide rod 24. The first guide rod 24 is fixedly installed on the base plate 1 via a vertical plate 27. The second moving seat 23 is also threadedly connected to a second lead screw 25. The second lead screw 25 is rotatably installed on the vertical plate 27. The second lead screw 25 is fixedly connected to the output shaft of the third motor 26. The third motor 26 is fixedly installed on one side of the vertical plate 27.

[0036] Furthermore, the pipe docking mechanism also includes an electric push rod 31 for driving the inner clamping plate 34 to clamp the inner pipe. The inner side of the inner clamping plate 34 is hinged to one end of the first connecting rod 33 and the second connecting rod 35. The other end of the second connecting rod 35 is hinged to the fixed column 30. The other end of the first connecting rod 33 is hinged to the traction plate 32. The traction plate 32 is fixedly connected to the piston rod of the electric push rod 31. The electric push rod 31 is fixedly installed on the fixed column 30. The fixed column 30 is fixedly installed on the rotating disk 28. The rotating disk 28 is fixedly connected to the output shaft of the fourth motor 29. The fourth motor 29 is fixedly installed on the vertical plate 27.

[0037] Preferably, when positioning the thin-walled tube 2, the positioning is mainly achieved by the outer diameter and inner diameter of the thin-walled tube 2. Regarding the positioning of the outer diameter, the output shaft of the first motor 15 drives the first lead screw 14 to rotate. Thus, the first wedge 9 can be driven to move up and down due to the threaded connection between the second wedge 13 and the first lead screw 14. When the first wedge 9 is raised, the third clamping guide wheel 10 on it can be driven to move upward. Under the inclined surface driving action of the first inclined surface 11 on the first wedge 9, the first clamping guide wheel 4 on the limiting rotating rod 3 can be driven to move towards the thin-walled tube 2, thereby completing the clamping and positioning of the outer side of the thin-walled tube 2.

[0038] Regarding the positioning of the inner diameter of the thin-walled tube 2, the inner clamping plate 34 is placed inside the inner diameter of the thin-walled tube 2. At this time, the positioning is mainly achieved by the extension and retraction of the electric push rod 31. That is, when the electric push rod 31 drives the traction plate 32 to extend, the inner clamping plate 34 can be driven to extend and move outward under the connection relationship between the first connecting rod 33 and the second connecting rod 35, thereby effectively supporting the inner diameter of the thin-walled tube 2 and completing the support and positioning of the inner diameter of the thin-walled tube 2. When it is necessary to drive the positioned thin-walled tube 2 to rotate, it is only necessary to drive it through the rotation control of the fourth motor 29. Since the first clamping guide wheel 4 on the limit rotating rod 3 and the third clamping guide wheel 10 on the first wedge 9 are in a rotating state, the positioned thin-walled tube 2 can be effectively driven to rotate.

[0039] To better position and support the thin-walled tube 2, the output shaft of the second motor 22 drives the worm gear 21 to rotate according to the length of the thin-walled tube 2. With the worm gear 21 meshing with the worm wheel 20, the rotating gear 18 on the second connecting shaft 19 can be driven to rotate. Thus, with the rotating gear 18 meshing with the toothed plate 17, the two first moving seats 16 can be driven to move relative to each other. That is, when the thin-walled tube 2 is too long, the two first moving seats 16 are relatively far apart, and when the thin-walled tube 2 is too short, the two first moving seats 16 are relatively close together, thus effectively completing the support and positioning of the thin-walled tube 2.

[0040] The relative movement of the two first moving seats 16 is controlled from the middle of the thin-walled tube 2. Therefore, the movement control is mainly performed by the second moving seat 23. The movement of the second moving seat 23 is mainly driven by the third motor 26. Thus, under the threaded connection of the second lead screw 25 and the linear guidance of the first guide rod 24, the second moving seat 23 can drive the two first moving seats 16 to perform center selection and positioning, which facilitates subsequent support and positioning.

[0041] The adjustable flexible clamping design of the pipe docking mechanism allows for flexible adjustment of the clamping range and clamping force according to different pipe diameter specifications of thin-walled pipes. It eliminates the need to disassemble and replace the entire clamping assembly, making it highly versatile. Furthermore, the inner diameter support and positioning clamping works in conjunction with the outer diameter clamping and positioning structure to form double fixed support, further enhancing the clamping stability of thin-walled pipes. This is particularly suitable for clamping long pipe sections and large-diameter thin-walled pipes, effectively preventing sagging and displacement caused by the weight of the long pipe section, ensuring the overall concentricity of the thin-walled pipe. The rotatable operation eliminates the need for manual control of the thin-walled pipe rotation, significantly reducing the labor intensity of operators and avoiding problems such as poor consistency and large errors caused by manual rotation operations, thus improving the product qualification rate and consistency.

[0042] like Figures 1-10 As shown, this embodiment, based on the above embodiment, also includes a sheet positioning mechanism, which is installed on the base plate 1 and is used to position, clamp, and flip the unloaded thin-walled sheet 47 for welding. The sheet positioning mechanism includes a clamping plate mechanism 42 for positioning and flipping. The clamping plate mechanism 42 is rotatably mounted on the third movable seat 40 via the third connecting shaft 43. The sheet metal unloading mechanism is mounted on the support frame 46 and is used to pick up the thin-walled sheet metal 47 from the support frame 46 and place it parallel to the clamping plate mechanism 42 for positioning. The sheet metal unloading mechanism includes an electric suction cup 48 for gripping and unloading, and a first unloading rod 51 and a second unloading rod 56 for material picking control. The first unloading rod 51 is movably mounted on the support frame 46, and the second unloading rod 56 is fixedly mounted on the first unloading rod 51. The included angle between the second unloading rod 56 and the first unloading rod 51 is an acute angle.

[0043] Furthermore, the sheet metal positioning mechanism also includes a fifth motor 39 for driving the third moving seat 40 to move linearly. The third connecting shaft 43 is fixedly connected to the output shaft of the sixth motor 44, which is fixedly mounted on the third moving seat 40. A vertical limiting plate 41 for vertical limiting is provided on one side of the third moving seat 40. The third moving seat 40 is slidably connected to the fixed seat 36 through the second guide rod 37. The fixed seat 36 is fixedly mounted on one side of the first guide rod 24. The third moving seat 40 is also threadedly connected to the third lead screw 38, which is rotatably mounted on the fixed seat 36. The third lead screw 38 is fixedly connected to the output shaft of the fifth motor 39, and the fifth motor 39 is fixedly mounted on one side of the fixed seat 36.

[0044] Furthermore, the sheet metal unloading mechanism also includes a first sprocket 52 and a second sprocket 54 for traction and rotation of the electric suction cup 48. The electric suction cup 48 is fixedly mounted on the suction cup bracket 49. The suction cup bracket 49 is rotatably mounted on one end of the first unloading rod 51 via a fourth connecting shaft 50. The first sprocket 52 is also fixedly connected to the fourth connecting shaft 50. A chain 53 is drivenly connected to the first sprocket 52 and the second sprocket 54. The second sprocket 54 is fixedly mounted on the support frame 46. The other end of the first unloading rod 51 is rotatably mounted at the center of the second sprocket 54 via a fifth connecting shaft 55.

[0045] Furthermore, the sheet metal feeding mechanism also includes a third feeding rod 58 and a fourth feeding rod 60 for driving the first feeding rod 51 to rotate and pull. One end of the third feeding rod 58 is rotatably mounted to one end of the second feeding rod 56 via a sixth connecting shaft 57, and the other end of the third feeding rod 58 is rotatably mounted to one end of the fourth feeding rod 60 via a seventh connecting shaft 59. The other end of the fourth feeding rod 60 is fixedly connected to an eighth connecting shaft 61, which is fixedly connected to the output shaft of a seventh motor 62. The seventh motor 62 is fixedly mounted on the support frame 46.

[0046] Preferably, in this embodiment, when the thin-walled plate 47 is cut, Figure 4 The image shows the initial state of the material placement. Figure 3The diagram shows the vertical state of the welding process. The specific unloading method is as follows: the electric suction cup 48 adsorbs and fixes the thin-walled plate 47 on the support frame 46. Then, during the unloading drive, the output shaft of the seventh motor 62 drives the fourth unloading rod 60 on the eighth connecting shaft 61 to rotate. Then, under the traction of the third unloading rod 58 and the first unloading rod 51, the thin-walled plate 47 on the support frame 46 can be picked up and placed on the clamping plate mechanism 42. During the rotation drive, since the second sprocket 54 is in a fixed position, under the transmission traction of the chain 53, the first sprocket 52 drives the coaxial suction cup bracket 49 to rotate, thereby completing the corresponding operation of the suction cup bracket 49 driving the electric suction cup 48 to flip, thus completing the unloading operation of the thin-walled plate 47.

[0047] The overall feeding cycle is as follows: when the fourth feeding rod 60 rotates one revolution, the electric suction cup 48 can be moved from the bottom to the top to pick up the material, and the thin-walled plate 47 after picking up the material can be placed on the clamping plate mechanism 42. That is, the thin-walled plate 47 is moved from the vertical position to the horizontal position on the clamping plate mechanism 42, and this is one cycle.

[0048] The position of the thin-walled plate 47 is mainly controlled by the fifth motor 39. The fifth motor 39 drives the third lead screw 38 to rotate and the second guide rod 37 to guide the third moving seat 40 to drive the clamping plate mechanism 42 to perform linear movement control. After the thin-walled plate 47 on the clamping plate mechanism 42 is positioned, the sixth motor 44 drives the clamping plate mechanism 42 to rotate 90°. Under the vertical limiting action of the vertical limiting plate 41, the clamping plate mechanism 42 can drive the positioned thin-walled plate 47 to be placed vertically, so as to facilitate the docking treatment with the end corner of the thin-walled tube 2. At this time, the welding robots 45 on both sides can complete the welding treatment of the thin-walled tube 2 and the thin-walled plate 47.

[0049] It should be noted that the clamping plate mechanism 42 positions and clamps the thin-walled plate 47. The clamping methods include, but are not limited to, pressing and fixing the plate, and a corresponding pushing mechanism is provided on one side of the thin-walled plate 47 for pushing the material. These are not shown in the figure. The above are all common knowledge known to those skilled in the art, and will not be elaborated on further in this article.

[0050] The design of the sheet metal cutting mechanism facilitates the individual picking and cutting of thin-walled sheets, significantly improving cutting efficiency and accuracy while protecting the structural integrity of the thin-walled sheets. Firstly, the picking process is convenient and efficient, completely freeing up manpower and reducing labor intensity. Secondly, the cutting accuracy is high, and the positioning benchmark is unified, laying a solid foundation for subsequent welding. Thirdly, it can effectively protect the structural integrity of the thin-walled sheets and reduce workpiece wear.

[0051] Meanwhile, after the thin-walled plates are cut, they can be smoothly welded to the thin-walled tubes, which greatly improves the welding accuracy and quality, shortens the production cycle, and greatly improves the production efficiency. This equipment realizes the integrated automated control of thin-walled plates picking, cutting, docking, and welding one by one. It not only reduces the difficulty of operation for operators, but also reduces the direct contact between operators and welding stations, which greatly improves the safety of operation.

[0052] It should be noted that the components in this application are all general standard parts or parts known to those skilled in the art, which effectively solve the technical problems raised in the background art.

[0053] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for fillet welds between thin-walled plates and thin-walled tubes, comprising a base plate (1) and a support frame (46), characterized in that, The support frame (46) is provided with several vertically placed thin-walled plates (47), the base plate (1) is provided with a thin-walled tube (2) to be welded, and welding robots (45) for welding are provided on both sides of the base plate (1). The system also includes: The pipe docking mechanism is installed on the base plate (1) and is used to clamp, position and rotate the thin-walled pipe (2). The pipe docking mechanism includes a first movable seat (16) for positioning support and an inner clamping plate (34) for end control clamping rotation. The first movable seat (16) is movably mounted with a first clamping guide wheel (4) and a third clamping guide wheel (10) for positioning support. The first clamping guide wheel (4) is movably mounted inside the first movable seat (16) through a limiting rotating rod (3). The third clamping guide wheel (10) is rotatably mounted on a first wedge (9). The limiting rotating rod (3) is clamped and controlled by the lifting and lowering of the first wedge (9). The plate positioning mechanism is installed on the base plate (1) and is used to position, clamp and flip the unloaded thin-walled plate (47) for welding. The plate positioning mechanism includes a clamping plate mechanism (42) for positioning and flipping. The clamping plate mechanism (42) is rotatably installed on the third moving seat (40) through the third connecting shaft (43). The sheet metal unloading mechanism is mounted on the support frame (46) and is used to pick up the thin-walled sheet (47) on the support frame (46) and place it parallel to the clamping plate mechanism (42) for positioning. The sheet metal unloading mechanism includes an electric suction cup (48) for gripping and unloading, as well as a first unloading rod (51) and a second unloading rod (56) for material picking control. The first unloading rod (51) is movably mounted on the support frame (46), and the second unloading rod (56) is fixedly mounted on the first unloading rod (51). The included angle between the second unloading rod (56) and the first unloading rod (51) is an acute angle.

2. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 1, characterized in that, The pipe docking mechanism also includes a second wedge (13) for driving the limiting rotating rod (3) to perform clamping control. The limiting rotating rod (3) is rotatably installed inside the first moving seat (16) via the first connecting shaft (5). The first clamping guide wheel (4) is rotatably installed at one end of the limiting rotating rod (3). The other end of the limiting rotating rod (3) is rotatably installed with a second clamping guide wheel (6). The first wedge (9) has a first inclined surface (11) adapted to slide and connect with the second clamping guide wheel (6). The outer end of the limiting rotating rod (3) is fixedly connected with a traction rod (7). A reset tension spring (8) is installed on the traction rod (7). The second wedge (13) is adapted to slide and connect to one side of the first wedge (9).

3. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 2, characterized in that, The pipe docking mechanism also includes a first motor (15) for driving the second wedge (13) to move. The first wedge (9) has a second inclined surface (12) adapted to slide and connect the second wedge (13). The second wedge (13) is threaded to the first lead screw (14). The first lead screw (14) is rotatably installed inside the first moving seat (16), and the first lead screw (14) is fixedly connected to the output shaft of the first motor (15). The first motor (15) is fixedly installed on the first moving seat (16).

4. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 3, characterized in that, The pipe docking mechanism also includes a rotating gear (18) for driving the first moving seat (16) to move relative to each other. The bottom of the first moving seat (16) is fixedly connected to a toothed plate (17). The toothed plate (17) is slidably connected to the second moving seat (23). The rotating gear (18) is meshed on the toothed plate (17). The rotating gear (18) is rotatably installed inside the second moving seat (23) through a second connecting shaft (19). A worm gear (20) is also fixedly connected to the second connecting shaft (19). A worm (21) is meshed on the worm gear (20). The worm (21) is fixedly connected to the output shaft of the second motor (22). The second motor (22) is fixedly installed inside the second moving seat (23).

5. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 4, characterized in that, The pipe docking mechanism also includes a third motor (26) for driving the second moving seat (23) to move linearly. The second moving seat (23) is slidably connected to the base plate (1) by the first guide rod (24). The first guide rod (24) is fixedly installed on the base plate (1) by the upright plate (27). The second moving seat (23) is also threadedly connected to the second lead screw (25). The second lead screw (25) is rotatably installed on the upright plate (27). The second lead screw (25) is fixedly connected to the output shaft of the third motor (26). The third motor (26) is fixedly installed on one side of the upright plate (27).

6. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 5, characterized in that, The pipe docking mechanism also includes an electric push rod (31) for driving the inner clamping plate (34) to clamp the inner pipe. The inner side of the inner clamping plate (34) is hinged to one end of the first connecting rod (33) and the second connecting rod (35). The other end of the second connecting rod (35) is hinged to the fixed column (30). The other end of the first connecting rod (33) is hinged to the traction plate (32). The traction plate (32) is fixedly connected to the piston rod of the electric push rod (31). The electric push rod (31) is fixedly installed on the fixed column (30). The fixed column (30) is fixedly installed on the rotating disk (28). The rotating disk (28) is fixedly connected to the output shaft of the fourth motor (29). The fourth motor (29) is fixedly installed on the upright plate (27).

7. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 1, characterized in that, The sheet positioning mechanism also includes a fifth motor (39) for driving the third moving seat (40) to move linearly. The third connecting shaft (43) is fixedly connected to the output shaft of the sixth motor (44). The sixth motor (44) is fixedly installed on the third moving seat (40). A vertical limiting plate (41) for vertical limiting is provided on one side of the third moving seat (40). The third moving seat (40) is limited and slidably connected to the fixed seat (36) through the second guide rod (37). The fixed seat (36) is fixedly installed on one side of the first guide rod (24). The third moving seat (40) is also threadedly connected to the third lead screw (38). The third lead screw (38) is rotatably installed on the fixed seat (36). The third lead screw (38) is fixedly connected to the output shaft of the fifth motor (39), and the fifth motor (39) is fixedly installed on one side of the fixed seat (36).

8. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 1, characterized in that, The sheet metal feeding mechanism also includes a first sprocket (52) and a second sprocket (54) for traction electric suction cup (48) to rotate. The electric suction cup (48) is fixedly installed on the suction cup bracket (49). The suction cup bracket (49) is rotatably installed on one end of the first feeding rod (51) through the fourth connecting shaft (50). The first sprocket (52) is also fixedly connected to the fourth connecting shaft (50). A chain (53) is drivenly connected to the first sprocket (52) and the second sprocket (54). The second sprocket (54) is fixedly installed on the support frame (46). The other end of the first feeding rod (51) is rotatably installed at the center of the second sprocket (54) through the fifth connecting shaft (55).

9. The welding equipment for fillet welds between thin-walled plates and thin-walled tubes according to claim 8, characterized in that, The sheet metal feeding mechanism further includes a third feeding rod (58) and a fourth feeding rod (60) for driving the first feeding rod (51) to rotate and pull. One end of the third feeding rod (58) is rotatably mounted on one end of the second feeding rod (56) via a sixth connecting shaft (57). The other end of the third feeding rod (58) is rotatably mounted on one end of the fourth feeding rod (60) via a seventh connecting shaft (59). The other end of the fourth feeding rod (60) is fixedly connected to an eighth connecting shaft (61). The eighth connecting shaft (61) is fixedly connected to the output shaft of a seventh motor (62). The seventh motor (62) is fixedly mounted on a support frame (46).

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