Welding device for automobile rear beam bent pipe

Abstract

The invention discloses a welding device for an automobile rear beam bent pipe, and relates to the technical field of automobile part machining, the device comprises an operation table, an avoiding hole is formed in the upper end of the operation table, a second limiting structure is mounted in the operation table, a mounting hole is formed in the upper end of the operation table, and a first limiting structure is mounted in the operation table; through cooperation of the driving structure, the adjusting structure, the clamping structure and the first limiting structure, the position of a bent plate can be adjusted, the welding effect is prevented from being affected, stable clamping of the bent plate can be achieved, the stability of the bent plate in the welding process is ensured, meanwhile, the bent plate and a bent pipe are fixed, and the welding efficiency is improved. The relative position stability of the bent plate and the bent pipe in the welding process is ensured, and the bent plate and the bent pipe are prevented from moving or deforming in the welding process; and when the bent plate and the bent pipe are welded, uneven thermal stress in the welding process can be reduced by adopting a symmetrical welding mode, so that the risk of welding deformation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a welding device for automobile rear beam bent pipes. Background Art

[0002] In the automobile manufacturing industry, the welding of the rear beam bent pipe and bent plate is a key link in the vehicle structure manufacturing. The welding position A of the rear beam bent pipe and bent plate (as shown in the attached figure of the specification - Figure 7 It is crucial and directly related to the structural strength, safety and durability of the vehicle.

[0003] At present, most of the automatic welding devices on the market are used to weld the bent pipes and bent plates of automobile rear beams. Although automatic production has been achieved to a certain extent, there are still some shortcomings. Existing devices usually use simple fixtures or clamping devices to fix bent pipes and bent plates. These devices are prone to loosening or instability when used for a long time or when handling complex workpieces, causing the workpiece to move or deform during welding. At the same time, when adjusting the position of the bent plate, most of them rely on manual or simple machinery, which is inefficient and lacks precision, and cannot meet the requirements of high-precision welding.

[0004] Based on this, a welding device for automobile rear beam bending pipe is now provided, which can eliminate the disadvantages of the existing device. Summary of the invention

[0005] The object of the present invention is to provide a welding device for an automobile rear beam bent pipe to solve the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A welding device for automobile rear beam bent pipe, comprising

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0009] A welding device for a bent pipe of a rear beam of an automobile comprises an operating table, a welding robot is arranged in front of the operating table, a side support seat is fixed to the rear side of the upper end of the operating table, two fixed structures and two central support seats are symmetrically fixed to the left and right sides of the upper end of the operating table, an avoidance hole is arranged between the fixed structure and the central support seat, a second limiting structure is installed inside the avoidance hole, and a mounting hole is opened at the rear side of the upper end of the operating table, a first limiting structure is installed inside the mounting hole.

[0010] Preferably, the fixing structure includes a fixing seat, a fixing frame and a pipe mouth support seat are fixed to the upper end of the fixing seat, a C-shaped block and a fixing cylinder are fixed to the middle and top of one end of the fixing frame close to the pipe mouth support seat respectively, and a downward pressure rod is fixed to the output end of the fixing cylinder.

[0011] Preferably, the second limiting structure comprises a second cylinder installed inside the avoidance hole, a support is fixed to the output end of the second cylinder, and a side pressure block is fixed to the rear end of the support via an adjusting arm.

[0012] Preferably, the first limiting structure includes a limiting seat installed inside the mounting hole, a rectangular groove is opened in the middle of the upper end of the limiting seat, a threaded rod is installed in the rectangular groove, the threaded rod is fixedly connected to the slave bevel gear located at the lower end of the limiting seat through a connecting rod, the slave bevel gear is meshed and connected to the driving structure, a rectangular block is slidably installed in the rectangular groove and threadedly connected to the threaded rod, a moving seat is fixed on the upper end of the rectangular block, and a central pressure block is fixed to the front end of the moving seat through a lower pressure arm.

[0013] Preferably, the driving structure includes a main bevel gear meshing with a slave bevel gear, the main bevel gear is fixedly connected to one end of a worm, the worm is rotatably mounted between two first fixed ears, the two first fixed ears are fixed to the bottom end of the operating table, the other end of the worm is fixedly connected to the output end of the motor via a driving rod, the main gear is fixed to the outer wall of the driving rod, and an adjustment structure and a clamping structure are respectively provided at the lower end and left and right sides of the driving structure.

[0014] Preferably, the adjustment structure includes a worm wheel meshing with the worm, a first bidirectional screw is fixed at the center position of the worm wheel, the first bidirectional screw is rotatably installed between second fixed ears fixed to the bottom end of the operating table, both ends of the first bidirectional screw are threadedly connected to a moving block, the upper end of the moving block passes through the avoidance hole to fix the adjustment plate, and the moving block is slidably connected to the outer wall of the guide rod fixed in the avoidance hole.

[0015] Preferably, the clamping structure includes a follower gear meshing with the main gear, the follower gear is connected to the second bidirectional screw through a driven rod, the second bidirectional screw is rotatably installed between two third fixed ears fixed to the bottom end of the operating table, a limit rod is fixed between the two third fixed ears, the outer walls of both ends of the second bidirectional screw are screwed with follower blocks, the follower block is slidably connected to the outer wall of the limit rod, the upper end of the follower block is fixed with a clamping plate, the clamping plate passes through an avoidance hole to the upper end of the operating table, and the opposite ends of the two clamping plates are fixed with clamping blocks.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention ensures the stability of the bent pipe during welding by cooperating the fixing structure with the second limiting structure, avoids turning over or moving, and enhances the stability of the bent pipe during welding.

[0018] 2. The present invention cooperates with the driving structure, the adjustment structure, the clamping structure and the first limiting structure, which can not only adjust the position of the bent plate to avoid affecting the welding effect, but also realize stable clamping of the bent plate, thereby ensuring the stability of the bent plate during the welding process, and at the same time fix the bent plate and the bent pipe to ensure the relative position of the bent plate and the bent pipe during the welding process, thereby preventing the bent plate and the bent pipe from moving or deforming during welding; and when welding the bent plate and the bent pipe, the use of a symmetrical welding method can reduce the uneven thermal stress in the welding process, thereby reducing the risk of welding deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the upper end position of the operating table of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the lower end of the operating table of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the driving structure and the adjusting structure of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the driving structure and the clamping structure of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the driving structure and the first limiting structure of the present invention.

[0025] Figure 7 Schematic diagram of welding position A of the bent pipe and the bent plate of the present invention.

[0026] Notes on the accompanying drawings: 11. operating table; 12. fixed structure; 1201. fixed seat; 1202. fixed frame; 1203. fixed cylinder; 1204. pressing rod; 1205. nozzle support seat; 1206. C-shaped block; 13. avoidance hole; 14. mounting hole; 15. first limiting structure; 1501. limiting seat; 1502. moving seat; 1503. pressing arm; 1504. central pressing block; 1505. rectangular cylinder; 1506. threaded rod; 1507. rectangular groove; 1508. connecting rod; 1509. from bevel gear; 16. side support seat; 17. second limiting structure; 1701. cylinder; 1702. support seat; 1703. adjusting arm; 1704. side Pressing block; 18. Driving structure; 1801. Motor; 1802. Driving rod; 1803. Main gear; 1804. Worm; 1805. First fixed ear; 1806. Main bevel gear; 19. Adjusting structure; 1901. Worm wheel; 1902. First bidirectional screw; 1903. Moving block; 1904. Adjusting plate; 1905. Guide rod; 1906. Second fixed ear; 20. Clamping structure; 2001. Follower gear; 2002. Follower rod; 2003. Second bidirectional screw; 2004. Follower block; 2005. Clamping plate; 2006. Clamping block; 2007. Third fixed ear; 2008. Limiting rod; 21. Center support seat; 22. Welding robot. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] In one embodiment, Figure 1-Figure 7 As shown, a welding device for a rear beam bending pipe of an automobile comprises an operating table 11, a welding robot 22 is arranged in front of the operating table 11, a side support seat 16 is fixed to the rear side of the upper end of the operating table 11, two fixed structures 12 and two center support seats 21 are symmetrically fixed to the left and right sides of the upper end of the operating table 11, an avoidance hole 13 is arranged between the fixed structure and the center support seat 21, a second limiting structure 17 is installed inside the avoidance hole 13, and a mounting hole 14 is opened at the rear side of the upper end of the operating table 11, a first limiting structure 15 is installed inside the mounting hole 14.

[0029] In this embodiment, the bent pipe is first placed on the upper ends of the side support seat 16 and the center support seat 21, and the two ends of the bent pipe are respectively placed on two fixed structures 12, and the two ends of the bent pipe are fixed by the two fixed structures 12. The two second limiting structures 17 and the matching side support seats 16 cooperate to fix the bent pipe to prevent it from flipping over. Then the bent plate is placed on the bent pipe, and the bent plate and the bent pipe are fixed by the first limiting structure 15. Finally, the welding robot 22 operates the welding gun 23 to perform symmetrical welding on the contact position of the bent plate and the bent pipe.

[0030] In an optional embodiment, the fixed structure 12 includes a fixed seat 1201, a fixed frame 1202 and a pipe mouth support seat 1205 are fixed to the upper end of the fixed seat 1201, a C-shaped block 1206 and a fixed cylinder 1203 are respectively fixed to the middle and top of one end of the fixed frame 1202 close to the pipe mouth support seat 1205, and a downward pressure rod 1204 is fixed to the output end of the fixed cylinder 1203.

[0031] It should be noted that the fixing structure 12 is used to fix the two ends of the elbow. The fixing seat 1201 is firmly mounted on the operating table 11, and the fixing frame 1202 at the upper end thereof provides support, while the pipe mouth support seat 1205 ensures that one end of the elbow is stably placed. The C-block 1206 is located on one side of the elbow to prevent it from moving sideways. The fixing cylinder 1203 applies pressure to the other end of the elbow through the pressing rod 1204 to achieve fixation. When the fixing cylinder 1203 is started, the pressing rod 1204 will press down and closely contact the elbow to ensure that it will not move during the welding process.

[0032] In an optional embodiment, the second limiting structure 17 includes a cylinder 1701 installed inside the avoidance hole 13, a support 1702 is fixed to the output end of the cylinder 1701, and a side pressure block 1704 is fixed to the rear end of the support 1702 through an adjusting arm 1703.

[0033] It should be noted that the second limiting structure 17 cooperates with the side support seat 16 to further fix the bent pipe. The cylinder 1701 drives the side pressure block 1704 to move through the support 1702 and the adjustment arm 1703. The side pressure block 1704 is in close contact with the side of the bent pipe to prevent it from turning over or moving during the welding process. This double fixing method greatly enhances the stability of the bent pipe during the welding process.

[0034] In an optional embodiment, the first limiting structure 15 includes a limiting seat 1501 installed inside the mounting hole 14, a rectangular groove 1507 is opened in the middle of the upper end of the limiting seat 1501, a threaded rod 1506 is installed in the rectangular groove 1507, the threaded rod 1506 is fixedly connected to a slave bevel gear 1509 located at the lower end of the limiting seat 1501 through a connecting rod 1508, the slave bevel gear 1509 is meshed and connected to the driving structure 18, a rectangular block 1505 is slidably installed in the rectangular groove 1507 and is threadedly connected to the threaded rod 1506, a moving seat 1502 is fixed on the upper end of the rectangular block 1505, and a central pressure block 1504 is fixed to the front end of the moving seat 1502 through a lower pressure arm 1503.

[0035] It should be noted that, through the drive of the driving structure 18, the rotation of the bevel gear 1509 drives the threaded rod 1506 to rotate, so that the rectangular block 1505 slides in the rectangular groove 1507, and then drives the moving seat 1502, the lower pressure arm 1503 and the center pressure block 1504 to move up and down, thereby fixing the bent plate and the bent pipe, ensuring that the relative position of the bent plate and the bent pipe is stable during the welding process.

[0036] In an optional embodiment, the driving structure 18 includes a main bevel gear 1806 meshing with the slave bevel gear 1509, the main bevel gear 1806 is fixedly connected to one end of a worm 1804, the worm 1804 is rotatably mounted between two first fixed ears 1805, the two first fixed ears 1805 are fixed to the bottom end of the operating table 11, the other end of the worm 1804 is fixedly connected to the output end of the motor 1801 via a driving rod 1802, the main gear 1803 is fixed to the outer wall of the driving rod 1802, and an adjustment structure 19 and a clamping structure 20 are respectively provided at the lower end and left and right sides of the driving structure 18.

[0037] It should be noted that the motor 1801 drives the main gear 1803 and the worm 1804 to rotate through the driving rod 1802. The meshing of the worm 1804 and the worm wheel 1901 enables the driving force to be transmitted to the adjustment structure 19, thereby adjusting the position of the adjustment plate 1904. In addition, the main gear 1803 also meshes with the slave gear 2001 to drive the clamping structure 20 to work. This design enables the entire welding device to achieve automated operation and improves work efficiency.

[0038] In an optional embodiment, the adjustment structure 19 includes a worm wheel 1901 meshing with the worm 1804, and a first bidirectional screw 1902 is fixed at the center position of the worm wheel 1901. The first bidirectional screw 1902 is rotatably installed between a second fixed ear 1906 fixed to the bottom end of the operating table 11, and both ends of the first bidirectional screw 1902 are threadedly connected to a moving block 1903. The upper end of the moving block 1903 passes through the avoidance hole 13 to fix the adjustment plate 1904, and the moving block 1903 is slidably connected to the outer wall of the guide rod 1905 fixed in the avoidance hole 13.

[0039] It should be noted that the adjustment structure 19 is used to adjust the position of the adjustment plate 1904 to adjust the position of the bent plate. The meshing of the worm wheel 1901 and the worm 1804 enables the first bidirectional screw 1902 to rotate. The moving block 1903 moves along the guide rod 1905 under the drive of the first bidirectional screw 1902, thereby adjusting the position of the adjustment plate 1904. This design enables the welding device to ensure that the position of the bent plate is correct, thereby improving its welding effect.

[0040] In an optional embodiment, the clamping structure 20 includes a follower gear 2001 meshing with the main gear 1803, the follower gear 2001 is connected to the second bidirectional screw 2003 through a follower rod 2002, the second bidirectional screw 2003 is rotatably installed between two third fixed ears 2007 fixed at the bottom end of the operating table 11, a limiting rod 2008 is fixed between the two third fixed ears 2007, the outer walls of both ends of the second bidirectional screw 2003 are screwed to the follower block 2004, the follower block 2004 is slidably connected to the outer wall of the limiting rod 2008, the upper end of the follower block 2004 is fixed with a clamping plate 2005, the clamping plate 2005 passes through the avoidance hole 13 to the upper end of the operating table 11, and the clamping blocks 2006 are fixed to the opposite ends of the two clamping plates 2005.

[0041] It should be noted that the clamping structure 20 is used to fix the bent plate to ensure its stability during the welding process. The meshing of the slave gear 2001 and the master gear 1803 enables the second bidirectional screw 2003 to rotate. The driven blocks 2004 located at both ends of the second bidirectional screw 2003 move synchronously relative to each other along the limit rod 2008 under the drive of the second bidirectional screw 2003, thereby driving the clamping plate 2005 and the clamping block 2006 to move. The clamping block 2006 is in close contact with the bent plate to provide additional fixing force. This design enables the welding device to maintain the stability of the bent plate during the welding process and ensure the welding quality.

[0042] The above embodiment discloses a welding device for a bent pipe of a rear beam of an automobile, wherein the bent pipe is placed on the upper ends of the side support seat 16 and the center support seat 21, and the two ends of the bent pipe are respectively placed on two fixing structures 12 and fixed by the fixing structures 12. The second limiting structure 17 cooperates with the side support seat 16 to further fix the bent pipe to prevent it from turning over or moving during the welding process. The driving structure 18 is started, and the adjustment structure 19 is driven to adjust the position of the adjustment plate 1904 through the meshing of the worm 1804 and the worm wheel 1901 to ensure that the position of the bent plate is correct. At the same time, the driving structure 18 also drives the clamping structure 20 to work through the meshing of the main gear 1803 and the slave gear 2001 to achieve the fixation of the bent plate. At the same time, when the driving structure 18 is started, it will drive the slave bevel gear 1509 to rotate through the main bevel gear 1806. The rotation of the slave bevel gear 1509 is transmitted to the threaded rod 1506 through the connecting rod 1508, so that the threaded rod 1506 rotates in the rectangular groove 1507. Since the rectangular block 1505 is threadedly connected to the threaded rod 1506, the rotation of the threaded rod 1506 drives the rectangular block 1505 to move up and down in the rectangular slot 1507. The movement of the rectangular block 1505 is transmitted to the lower pressing arm 1503 through the moving seat 1502, thereby driving the lower pressing arm 1503 and the central pressing block 1504 to move up and down, and the central pressing block 1504 presses the bent plate downward, thereby fixing the bent plate and the bent pipe. Finally, the welding robot 22 operates the welding gun 23 to perform symmetrical welding on the contact position of the bent plate and the bent pipe.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A welding device for automobile rear beam bending pipe, characterized in that: The invention comprises an operating table (11), a welding robot (22) is arranged in front of the operating table (11), a side support seat (16) is fixed on the rear side of the upper end of the operating table (11), two fixed structures (12) and two central support seats (21) are symmetrically fixed on the left and right sides of the upper end of the operating table (11), an avoidance hole (13) is arranged between the fixed structure and the central support seat (21), a second limiting structure (17) is installed inside the avoidance hole (13), and a mounting hole (14) is opened on the rear side of the upper end of the operating table (11), a first limiting structure (15) is installed inside the mounting hole (14).

2. A welding device for automobile rear beam bend pipe according to claim 1, characterized in that: The fixing structure (12) comprises a fixing seat (1201), a fixing frame (1202) and a pipe mouth support seat (1205) being fixed to the upper end of the fixing seat (1201), a C-shaped block (1206) and a fixing cylinder (1203) being fixed to the middle and top of one end of the fixing frame (1202) close to the pipe mouth support seat (1205), respectively, and a pressing rod (1204) being fixed to the output end of the fixing cylinder (1203).

3. The welding device for automobile rear beam bending pipe according to claim 1, characterized in that: The second limiting structure (17) comprises a second cylinder (1701) installed inside the avoidance hole (13); a support (1702) is fixed to the output end of the second cylinder (1701); and a side pressure block (1704) is fixed to the rear end of the support (1702) via an adjusting arm (1703).

4. A welding device for automobile rear beam bend pipe according to claim 1, characterized in that: The first limiting structure (15) comprises a limiting seat (1501) installed inside the mounting hole (14); a rectangular groove (1507) is provided in the middle of the upper end of the limiting seat (1501); a threaded rod (1506) is installed in the rectangular groove (1507); the threaded rod (1506) is fixedly connected to a slave bevel gear (1509) located at the lower end of the limiting seat (1501) through a connecting rod (1508); the slave bevel gear (1509) is meshingly connected to the driving structure (18); a rectangular block (1505) is slidably installed in the rectangular groove (1507) and is threadedly connected to the threaded rod (1506); a moving seat (1502) is fixed at the upper end of the rectangular block (1505); and a central pressing block (1504) is fixed at the front end of the moving seat (1502) through a lower pressing arm (1503).

5. A welding device for automobile rear beam bent pipe according to claim 4, characterized in that: The driving structure (18) comprises a main bevel gear (1806) meshing with the slave bevel gear (1509); the main bevel gear (1806) is fixedly connected to one end of a worm (1804); the worm (1804) is rotatably mounted between two first fixing ears (1805); the two first fixing ears (1805) are fixed to the bottom end of the operating table (11); the other end of the worm (1804) is fixedly connected to the output end of the motor (1801) via a driving rod (1802); the main gear (1803) is fixed to the outer wall of the driving rod (1802); and an adjustment structure (19) and a clamping structure (20) are respectively provided at the lower end and left and right sides of the driving structure (18).

6. A welding device for automobile rear beam bent pipe according to claim 5, characterized in that: The adjustment structure (19) comprises a worm wheel (1901) meshing with the worm (1804); a first bidirectional screw (1902) is fixed at the center of the worm wheel (1901); the first bidirectional screw (1902) is rotatably mounted between second fixed ears (1906) fixed at the bottom end of the operating table (11); both ends of the first bidirectional screw (1902) are threadedly connected to a moving block (1903); the upper end of the moving block (1903) passes through the avoidance hole (13) to fix the adjustment plate (1904); and the moving block (1903) is slidably connected to the outer wall of a guide rod (1905) fixed in the avoidance hole (13).

7. A welding device for automobile rear beam bent pipe according to claim 5, characterized in that: The clamping structure (20) comprises a follower gear (2001) meshing with the main gear (1803); the follower gear (2001) is connected to the second bidirectional screw (2003) via a follower rod (2002); the second bidirectional screw (2003) is rotatably mounted between two third fixing ears (2007) fixed to the bottom end of the operating table (11); a limit rod (2008) is fixed between the two third fixing ears (2007); the outer walls at both ends of the second bidirectional screw (2003) are screwed to a follower block (2004); the follower block (2004) is slidably connected to the outer wall of the limit rod (2008); a clamping plate (2005) is fixed to the upper end of the follower block (2004); the clamping plate (2005) passes through the avoidance hole (13) to the upper end of the operating table (11); and clamping blocks (2006) are fixed to the opposite ends of the two clamping plates (2005).

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