A welding device for automotive stamping parts

Abstract

The present invention belongs to the technical field of automotive part welding, and in particular relates to a welding device for automotive stamping parts, including a base. A welding torch, a centering mechanism I, a centering mechanism II, and a centering mechanism III are installed on the top of the base. The centering mechanism II is arranged between the centering mechanism I and the centering mechanism III, and the welding torch is arranged between the centering mechanism I and the centering mechanism II. Through the centering mechanism I and the centering mechanism II, the present invention can clamp and position sleeves and U-shaped forks of different sizes, and can ensure that the axis of the sleeve is on the same horizontal plane as the axes of the two punching holes and is vertically intersecting. Then, through the centering mechanism III, the sleeve is pushed to move along the axis, which can make the U-shaped fork rotate. Finally, the connecting surface is closely attached to the end face of the sleeve. After that, through the cooperation of the centering mechanism I and the centering mechanism III, the closely attached sleeve and U-shaped fork can rotate one week, and finally the welding torch can perform full welding on the closely connected part of the sleeve and the connecting surface.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive part welding, and particularly to a welding device for automotive stamping parts. Background Art

[0002] Currently, the front axle strut assembly commonly used in double-wishbone vehicle suspensions is usually composed of the following main components: a coil spring, an upper mounting seat assembly, a shock absorber assembly, and a cast aluminum lower knuckle. Among them, the upper mounting seat assembly is a connecting element whose main function is to connect the vehicle frame; the coil spring is a buffer element whose main function is to mitigate the impact from the ground on the vehicle body; the shock absorber assembly is a vibration damping element whose main function is to consume the energy of the suspension vibration by using the resistance of the oil flow in itself; the cast aluminum lower knuckle is also a connecting element whose main function is to connect the axle.

[0003] For example, the patent with the application number 202022003982.3 discloses a U-shaped knuckle for connecting the axle. The steel sleeve in this application is welded to the U-shaped lower knuckle, and the U-shaped lower knuckle usually punches out two coaxial connecting round holes through a stamping machine. However, there is currently no dedicated welding device for welding steel sleeves of different sizes to U-shaped lower knuckles. Therefore, a welding device for automotive stamping parts is proposed. Summary of the Invention

[0004] In order to solve the disadvantages existing in the prior art, the present invention proposes a welding device for automotive stamping parts.

[0005] To achieve the above object, the present invention adopts the following technical solution: A welding device for automotive stamping parts includes a base. A welding gun, a centering mechanism one, a centering mechanism two, and a centering mechanism three are installed on the top of the base. The centering mechanism two is arranged between the centering mechanism one and the centering mechanism three. The welding gun is arranged between the centering mechanism one and the centering mechanism two. The centering mechanism one is used to clamp the U-shaped fork. The centering mechanism two is used to clamp the sleeve and make the axis of the sleeve perpendicular to and intersect with the axes of the two punching holes of the U-shaped fork clamped by the centering mechanism one. The centering mechanism three is used to push the sleeve to move along the axis and fit with the connection surface. During the process that the end face of the sleeve closely fits with the connection surface, the U-shaped fork will flip with the axes of the two punching holes as the centers. The welding gun is used to weld the closely fitting part of the sleeve and the connection surface.

[0006] Preferably, the centering mechanism I includes a vertical plate I fixedly installed on the top of the base. One side of the vertical plate I is rotatably installed with a U-shaped plate. On the side of the vertical plate I away from the U-shaped plate, a motor I is fixedly installed. The output shaft of the motor I rotatably penetrates the vertical plate I and is fixedly connected to the U-shaped plate. Two circular holes are opened on the U-shaped plate. On both sides of the U-shaped plate, single-axis cylinders I are fixedly installed. In both circular holes, tapered heads are movably installed. The piston rod ends of the two single-axis cylinders I respectively extend into the corresponding circular holes and are rotatably connected to the corresponding tapered heads.

[0007] Preferably, two brackets are fixedly installed at the bottom of the U-shaped plate. On both brackets, swing arms are rotatably installed. Through the swing arms, the same circular shaft is rotatably installed. At the top of the swing arm, a tension spring is fixedly installed. The top end of the tension spring is fixedly connected to the inner wall of one side of the U-shaped plate.

[0008] Preferably, a cylinder is fixedly installed on the side of the U-shaped plate close to the motor I. The output shaft of the motor I is fixedly connected to the cylinder.

[0009] Preferably, the centering mechanism II includes a mounting plate fixedly installed on the top of the base. On the mounting plate, two guide rails and two vertical plates are fixedly installed. On both guide rails, two sliders are slidably sleeved. On the corresponding two sliders, the same side plate is fixedly installed. The two vertical plates are located between the two guide rails. Through the two vertical plates, the same lead screw is rotatably installed. The lead screw penetrates the two side plates and is threadedly connected to the two side plates. On one side of one of the vertical plates, a motor II is fixedly installed. The output shaft of the motor II is fixedly connected to the end of the lead screw. On the side of the two side plates close to each other, two rectangular plates are fixedly installed. The four rectangular plates are distributed staggeredly. On the rectangular plates, two roller frames arranged in a V shape are fixedly installed. On both roller frames, guide rollers are rotatably installed.

[0010] Preferably, two sections of threads with opposite helix directions are provided on the lead screw. The two side plates are respectively adapted to the threads with the corresponding helix directions.

[0011] Preferably, the centering mechanism III includes a vertical plate II fixedly installed on the top of the base. A double-axis cylinder is fixedly installed through the vertical plate II. At the end parts of the two piston rods of the double-axis cylinder, the same connecting plate is fixedly installed. On the side of the connecting plate close to the centering mechanism I, a conical block is fixedly installed.

[0012] Preferably, a conical groove is opened on the side of the conical block close to the centering mechanism II. On the inner wall of one side of the conical groove away from the centering mechanism II, a plurality of spring telescopic rods are fixedly installed. At the end parts of the piston rods of the plurality of spring telescopic rods, the same circular plate is fixedly installed.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] Through centering mechanism 1 and centering mechanism 2, the present invention can clamp and position sleeves and U-shaped forks of different sizes, and can ensure that the axis of the sleeve is on the same horizontal plane as the axes of the two punching holes and is vertically intersected. Then, through centering mechanism 3, the sleeve is pushed to move along the axis, which can make the U-shaped fork rotate. Finally, the connecting surface is closely attached to the end face of the sleeve. Then, through the cooperation of centering mechanism 1 and centering mechanism 3, the closely attached sleeve and U-shaped fork can rotate one week. Finally, the welding torch can perform full welding on the closely connected part of the sleeve and the connecting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic diagram of the overall structure of a welding device for automotive stampings proposed by the present invention;

[0016] Figure 2 FIG. is a schematic diagram of the structure of centering mechanism 1 in a welding device for automotive stampings proposed by the present invention;

[0017] Figure 3 FIG. is a schematic diagram of a partial structure of a welding device for automotive stampings proposed by the present invention Figure 1 ;

[0018] Figure 4 FIG. is a schematic diagram of a partial structure of a welding device for automotive stampings proposed by the present invention Figure 2 ;

[0019] Figure 5 FIG. is a schematic diagram of the structure of centering mechanism 2 in a welding device for automotive stampings proposed by the present invention;

[0020] Figure 6 FIG. is a schematic diagram of the structure of centering mechanism 3 in a welding device for automotive stampings proposed by the present invention;

[0021] Figure 7 FIG. is a partial side sectional view of centering mechanism 3 in a welding device for automotive stampings proposed by the present invention;

[0022] Figure 8 FIG. is a schematic diagram of the structure of the workpiece to be welded in the present invention;

[0023] Figure 9 FIG. is a schematic diagram of the state when the welding device for automotive stampings proposed by the present invention welds the workpiece to be welded.

[0024] In the figure: 1. Base; 2. Welding torch; 3. Centering mechanism I; 31. Vertical plate I; 32. C-shaped plate; 322. Cylinder; 321. Round hole; 33. Motor I; 34. Single-axis cylinder I; 35. Tapered head; 36. Bracket; 37. Swing arm; 38. Round shaft; 39. Tension spring; 4. Centering mechanism II; 41. Mounting plate; 42. Slide block; 43. Side plate; 44. Lead screw; 45. Motor II; 46. Rectangular plate; 47. Roller frame; 48. Guide roller; 49. Vertical plate; 410. Guide rail; 5. Centering mechanism III; 51. Vertical plate II; 52. Double-axis cylinder; 53. Connecting plate; 54. Tapered block; 55. Tapered groove; 56. Spring telescopic rod; 57. Round plate; 6. Workpiece to be welded; 61. Sleeve; 62. U-shaped fork; 621. Punching hole; 622. Connecting surface. Detailed implementation manners

[0025] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-9 , the present invention provides a technical solution: a welding device for automotive stampings, used to weld a sleeve 61 and a U-shaped fork 62 to form a workpiece to be welded 6, including a base 1. A welding torch 2, a centering mechanism I 3, a centering mechanism II 4 and a centering mechanism III 5 are installed on the top of the base 1. The centering mechanism II 4 is arranged between the centering mechanism I 3 and the centering mechanism III 5, and the welding torch 2 is arranged between the centering mechanism I 3 and the centering mechanism II 4. The centering mechanism I 3 is used to clamp the U-shaped fork 62, the centering mechanism II 4 is used to clamp the sleeve 61 and make the axis of the sleeve 61 perpendicular to and intersect with the axes of the two punching holes 621 of the U-shaped fork 62 clamped by the centering mechanism I 3, and the centering mechanism III 5 is used to push the sleeve 61 to move along the axis and fit with the connecting surface 622. During the process that the end face of the sleeve 61 is in close fit with the connecting surface 622, the U-shaped fork 62 will rotate around the axes of the two punching holes 621, and the welding torch 2 is used to weld the close-fitting part of the sleeve 61 and the connecting surface 622.

[0027] The centering mechanism I 3 includes a vertical plate I 31 fixedly installed on the top of the base 1. A C-shaped plate 32 is rotatably installed on one side of the vertical plate I 31. A motor I 33 is fixedly installed on the side of the vertical plate I 31 away from the C-shaped plate 32. The output shaft of the motor I 33 rotates through the vertical plate I 31 and is fixedly connected to the C-shaped plate 32. Two round holes 321 are opened on the C-shaped plate 32. Single-axis cylinders I 34 are fixedly installed on both sides of the C-shaped plate 32. Tapered heads 35 are movably installed in the two round holes 321. The piston rod ends of the two single-axis cylinders I 34 respectively extend into the corresponding round holes 321 and are rotatably connected to the corresponding tapered heads 35.

[0028] Two brackets 36 are fixedly installed at the bottom of the U-shaped plate 32. Swing arms 37 are rotatably installed on both of the two brackets 36. The same round shaft 38 is rotatably installed through the two swing arms 37. A tension spring 39 is fixedly installed at the top of the swing arm 37. The top end of the tension spring 39 is fixedly connected to the inner wall of one side of the U-shaped plate 32.

[0029] Furthermore, when the two cone heads 35 are inserted into the punching holes 621 with different inner diameters of the U-shaped forks 62 with different sizes, at this time, the bottom of the U-shaped fork 62 falls on the round shaft 38. At this time, one side of the connecting surface 622 of each size of U-shaped fork 62 is upturned. Then, when the sleeve 61 pushes the U-shaped fork 62 to rotate around the axis of the punching hole 621, the U-shaped fork 62 will press down the round shaft 38. During this process, the two swing arms 37 will stretch the two tension springs 39. Therefore, the round shaft 38 and the two cone heads 35 can be used in cooperation to position and support the U-shaped forks 62 with different sizes.

[0030] A cylinder 322 is fixedly installed on one side of the U-shaped plate 32 close to the first motor 33. The output shaft of the first motor 33 is fixedly connected to the cylinder 322.

[0031] The centering mechanism II 4 includes a mounting plate 41 fixedly installed on the top of the base 1. Two guide rails 410 and two vertical plates 49 are fixedly installed on the mounting plate 41. Two sliders 42 are slidably sleeved on both of the two guide rails 410. The same side plate 43 is fixedly installed on the corresponding two sliders 42. The two vertical plates 49 are located between the two guide rails 410. The same lead screw 44 is rotatably installed through the two vertical plates 49. The lead screw 44 passes through the two side plates 43 and is threadedly connected to the two side plates 43. A second motor 45 is fixedly installed on one side of one of the vertical plates 49. The output shaft of the second motor 45 is fixedly connected to the end of the lead screw 44. Two rectangular plates 46 are fixedly installed on the side of the two side plates 43 close to each other. The four rectangular plates 46 are distributed alternately. Two roller frames 47 arranged in a V shape are fixedly installed on the rectangular plates 46. Guide rollers 48 are rotatably installed on both of the two roller frames 47.

[0032] Two sections of threads with opposite helix directions are provided on the lead screw 44. The two side plates 43 are respectively adapted to the threads with corresponding helix directions.

[0033] Furthermore, start the second motor 45 to drive the lead screw 44 to rotate. Since the two sections of threads with opposite helix directions on the lead screw 44 are respectively adapted to the two side plates 43, as the lead screw 44 rotates, it will drive the two side plates 43 to approach or move away synchronously, so that the multiple groups of guide rollers 48 arranged in a V shape can center and clamp the sleeves 61 with different diameters.

[0034] The centering mechanism III 5 includes a second vertical plate 51 fixedly installed at the top of the base 1. A double-acting cylinder 52 is fixedly installed through the second vertical plate 51. The ends of the two piston rods of the double-acting cylinder 52 are fixedly installed with the same connecting plate 53. A conical block 54 is fixedly installed on the side of the connecting plate 53 close to the centering mechanism I 3.

[0035] A conical groove 55 is formed on the side of the conical block 54 close to the centering mechanism II 4. A plurality of spring telescopic rods 56 are fixedly installed on the inner wall of the side of the conical groove 55 away from the centering mechanism II 4. The ends of the piston rods of the plurality of spring telescopic rods 56 are fixedly installed with the same circular plate 57.

[0036] Furthermore, after the centering mechanism II 4 clamps the sleeve 61, as the conical block 54 pushes the sleeve 61 towards the U-shaped fork 62 fixed on the centering mechanism I 3, in this process, first the circular plate 57 is in close contact with the end face of the sleeve 61 away from the centering mechanism II 4, and then the conical block 54 pushes the sleeve 61 along the axis towards the U-shaped fork 62 through the circular plate 57. After the end face of the sleeve 61 close to the centering mechanism II 4 is in close contact with the connecting surface 622, as the conical block 54 continues to move, the positions of the sleeve 61 and the circular plate 57 will no longer move, and the plurality of spring telescopic rods 56 will be compressed. Finally, the edge of the end of the sleeve 61 away from the centering mechanism II 4 will abut against the inner wall of the conical groove 55.

[0037] In this embodiment: When in use, place the U-shaped fork 62 inside the C-shaped plate 32, and then control the two single-acting cylinders I 34 to extend, so that the two centering mechanisms I 3 approach each other and are respectively inserted into the corresponding punching holes 621. Then release the U-shaped fork 62. At this time, the U-shaped fork 62 will rotate around the axis of the punching hole 621 and land on the round shaft 38. At this time, one side of the connecting surface 622 tilts upward;

[0038] Then place the sleeve 61 between the two side plates 43, and then start the second motor 45 to make the two side plates 43 approach each other. At this time, the plurality of guide rollers 48 on the two side plates 43 approach each other and clamp the sleeve 61. Since the plurality of groups of guide rollers 48 arranged in a V shape clamp the sleeve 61, the axis of the sleeve 61 will be on the same horizontal plane as the axes of the two punching holes 621 and are vertically intersecting;

[0039] After that, control the double-axis cylinder 52 to extend and push the tapered block 54 towards the centering mechanism II 4. At this time, the end of the sleeve 61 away from the centering mechanism II 4 will enter the tapered groove 55 and abut against the circular plate 57. As the double-axis cylinder 52 continues to extend, the tapered groove 55 will push the sleeve 61 to move along the axis and towards the centering mechanism II 4. At this time, the other end of the sleeve 61 will abut against the connecting surface 622. As the sleeve 61 continues to move, the sleeve 61 abutting against the connecting surface 622 will push the U-shaped fork 62 to rotate around the axis of the punching hole 621. When the end of the sleeve 61 is completely in close contact with the connecting surface 622, the double-axis cylinder 52 will no longer extend. During this process, the end edge of the sleeve 61 away from the centering mechanism II 4 will abut against the inner side of the tapered groove 55, and the plurality of spring telescopic rods 56 will be compressed by the moving circular plate 57;

[0040] After the end of the sleeve 61 is completely in close contact with the connecting surface 622, start the second motor 45 to move the two side plates 43 away from each other. Finally, when the plurality of guide rollers 48 are separated from the sleeve 61, the welding torch 2 can be started to weld the connection between the end of the sleeve 61 and the connecting surface 622. And during the welding process, start the first motor 33 to drive the C-shaped plate 32 to rotate. The C-shaped plate 32 then drives the U-shaped fork 62 and the sleeve 61 to rotate. When the sleeve 61 and the U-shaped fork 62 rotate one week, the welding torch 2 can fully weld the connection between the end of the sleeve 61 and the connecting surface 622.

[0041] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A welding device for automobile stamping parts, comprising a base (1), characterized in that: At the top of the base (1), a welding torch (2), a centering mechanism one (3), a centering mechanism two (4), and a centering mechanism three (5) are installed. The centering mechanism two (4) is arranged between the centering mechanism one (3) and the centering mechanism three (5). The welding torch (2) is arranged between the centering mechanism one (3) and the centering mechanism two (4). The centering mechanism one (3) is used to clamp the U-shaped fork (62). The centering mechanism two (4) is used to clamp the sleeve (61) and make the axis of the sleeve (61) perpendicular to and intersect with the axes of the two punching holes (621) of the U-shaped fork (62) clamped by the centering mechanism one (3). The centering mechanism three (5) is used to push the sleeve (61) to move along the axis and fit with the connecting surface (622). During the process that the end face of the sleeve (61) is in close fit with the connecting surface (622), the U-shaped fork (62) will rotate with the axes of the two punching holes (621) as the centers. The welding torch (2) is used to weld the close-fitting part of the sleeve (61) and the connecting surface (622); The centering mechanism one (3) includes a vertical plate one (31) fixedly installed at the top of the base (1). On one side of the vertical plate one (31), a U-shaped plate (32) is rotatably installed. On the side of the vertical plate one (31) away from the U-shaped plate (32), a motor one (33) is fixedly installed. The output shaft of the motor one (33) rotatably penetrates the vertical plate one (31) and is fixedly connected with the U-shaped plate (32). Two round holes (321) are formed in the U-shaped plate (32). On both sides of the U-shaped plate (32), single-axis cylinders one (34) are fixedly installed. In each of the two round holes (321), a tapered head (35) is movably installed. The piston rod ends of the two single-axis cylinders one (34) respectively extend into the corresponding round holes (321) and are rotatably connected with the corresponding tapered heads (35); At the bottom of the U-shaped plate (32), two brackets (36) are fixedly installed. On each of the two brackets (36), a swing arm (37) is rotatably installed. A same round shaft (38) is rotatably installed through the two swing arms (37). At the top of the swing arm (37), a tension spring (39) is fixedly installed. The top end of the tension spring (39) is fixedly connected with the inner wall of one side of the U-shaped plate (32); On the side of the U-shaped plate (32) close to the motor one (33), a cylinder (322) is fixedly installed. The output shaft of the motor one (33) is fixedly connected with the cylinder (322).

2. A welding device for automobile stamping parts according to claim 1, characterized in that: The second centering mechanism (4) comprises a mounting plate (41) fixedly mounted on the top of the base (1), two guide rails (410) and two vertical plates (49) being fixedly mounted on the mounting plate (41), two sliders (42) being slidably sleeved on the two guide rails (410), and the same side plate (43) being fixedly mounted on the corresponding two sliders (42), the two vertical plates (49) being located between the two guide rails (410), and the same screw rod (44) being rotatably mounted on the two vertical plates (49), the screw rod (44) being The vertical plates (49) penetrate through the two side plates (43) and are threadedly connected to the two side plates (43); a second motor (45) is fixedly mounted on one side of one of the vertical plates (49); an output shaft of the second motor (45) is fixedly connected to the end of the screw rod (44); two rectangular plates (46) are fixedly mounted on the sides of the two side plates (43) close to each other; the four rectangular plates (46) are staggeredly distributed; two roller frames (47) arranged in a V shape are fixedly mounted on the rectangular plates (46); guide rollers (48) are rotatably mounted on the two roller frames (47).

3. A welding device for automobile stamping parts according to claim 2, characterized in that: The screw rod (44) is provided with two sections of threads with opposite rotation directions, and the two side plates (43) are respectively adapted to the threads with corresponding rotation directions.

4. The welding device for automobile stamping parts according to claim 1, characterized in that: The centering mechanism three (5) comprises a vertical plate two (51) fixedly mounted on the top of the base (1), a dual-axis cylinder (52) being fixedly mounted through the vertical plate two (51), two piston rod ends of the dual-axis cylinder (52) being fixedly mounted with a same connecting plate (53), and a conical block (54) being fixedly mounted on a side of the connecting plate (53) close to the centering mechanism one (3).

5. A welding device for automobile stamping parts according to claim 4, characterized in that: A conical groove (55) is formed on a side of the conical block (54) close to the second centering mechanism (4), and a plurality of spring telescopic rods (56) are fixedly mounted on the inner wall of the conical groove (55) away from the second centering mechanism (4), and a common circular plate (57) is fixedly mounted on the piston rod ends of the plurality of spring telescopic rods (56).

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