A welding clamping device for automotive parts

Abstract

The present invention relates to the technical field of clamping tooling, and specifically to a welding clamping device for automobile parts, comprising a workbench, a clamping assembly being provided on the top of the workbench, a feeding assembly being provided on one side of the clamping assembly, the clamping assembly comprising an annular mounting box mounted on the workbench, an annular mounting plate being arranged on one side of the annular mounting box, a linkage assembly being arranged on the annular mounting plate, a driving member being arranged on the annular mounting box, and four arc-shaped claws being evenly distributed inside the annular mounting box, wherein the pipe fitting is delivered to the inside of the annular mounting box by the feeding assembly, the linkage assembly is driven to work by the driving member, and all the arc-shaped claws are driven by the linkage assembly to synchronously move toward the center of the annular mounting box to clamp the pipe fitting, so that the clamping force exerted on the pipe fitting is the same, thereby ensuring the center precision docking between the pipe fittings, and solving the problem of poor center precision of general clamping devices, resulting in low welding quality of the pipe fittings.

Description

Technical Field

[0001] The present invention relates to the technical field of clamping tools, in particular to a welding clamping device for automobile parts. Background Art

[0002] To address the problem that the clamping devices currently used in pipe welding can only clamp pipes of one diameter, requiring multiple clamping devices for pipes of different diameters, which not only increases production costs but also reduces processing efficiency due to frequent replacement, the applicant, under publication number CN113579542B, has proposed an invention patent for a welding device for aluminum die-cast automobile engine pipes. The device comprises a clamping device, wherein a rotating ring rotates to drive a curved lifting plate. The curved lifting plate rotates while squeezing a rotating column through the curved side surface. The rotating column moves outward under the extrusion force of the curved lifting plate and drives a push rod to move. The push rod drives the clamping device to move and stretch the clamping spring. At this point, the pipe can be inserted into the bottom of the clamping device inside the fixed slide. When the pipe is inserted into the appropriate position, the rotating ring is released. The clamping spring, under its own elastic force, pushes the clamping device toward the pipe and clamps the clamping device. During use, simply rotating the rotating ring drives each clamping device to move outward simultaneously, making it suitable for pipes of different diameters.

[0003] However, in the above technical solution, the pipe itself has weight. When the clamping spring pushes the clamping device to clamp the pipe, there is a downward deviation due to the weight of the pipe, resulting in poor center accuracy of the two pipes, thereby affecting the welding quality of the pipe. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an automobile component welding clamping device to solve the problem that the center accuracy of conventional clamping devices is poor, resulting in low quality of pipe welding.

[0005] Based on the above purpose, the present invention provides an automobile component welding clamping device, comprising a workbench, a clamping assembly provided on the top of the workbench, a feeding assembly provided on one side of the clamping assembly, and the clamping assembly comprising:

[0006] An annular mounting box is mounted on the workbench;

[0007] An annular mounting plate is provided on one side of the annular mounting box, and the annular mounting plate is fixedly connected to the annular mounting box;

[0008] A linkage assembly is provided on the annular mounting plate, and the linkage assembly is located inside the annular mounting box;

[0009] A driving member is provided on the annular mounting box and is in transmission connection with the linkage assembly;

[0010] Four arc-shaped claws are evenly distributed inside the annular mounting box, and each of the arc-shaped claws is transmission-connected to the linkage assembly;

[0011] The driving member drives the linkage assembly to work, so that all the arc-shaped claws move synchronously toward the center of the arc-shaped installation box to clamp the pipe fitting.

[0012] Preferably, the linkage component includes:

[0013] an annular bevel gear, rotatably connected to the annular mounting box, and the annular bevel gear is rotatably connected to the driving member;

[0014] Four mounting frames are provided corresponding to the arc-shaped claws one by one, and each of the mounting frames is fixedly connected to the annular mounting plate;

[0015] Four first threaded rods are respectively passed through the mounting frame, and one end of each first threaded rod is fixedly connected to the center of the arc-shaped claw;

[0016] Four first bevel gears are respectively arranged inside the mounting frame, each of the first bevel gears is respectively sleeved on the first threaded rod, each of the first bevel gears is respectively rotatably connected to the first threaded rod, and each of the first bevel gears is meshed with the annular bevel gear.

[0017] Preferably, a first limiting rod is provided on the side of each of the first threaded rods, each of the first limiting rods is passed through the mounting frame, and one end of each of the first limiting rods is fixedly connected to the arc-shaped claw.

[0018] Preferably, an annular groove is provided on one side of the annular bevel gear close to the first bevel gear, and at least four evenly distributed arc support plates are provided on the annular mounting plate, and the top of each arc support plate is inserted into the annular groove.

[0019] Preferably, the driving member is a first motor, which is mounted on the outside of the annular mounting box. The output shaft of the first motor passes through the annular mounting box and is provided with a second bevel gear, and the second bevel gear is meshed with the annular bevel gear.

[0020] Preferably, the two tips of the arc-shaped claw arc opening are straight.

[0021] Preferably, the feeding assembly comprises:

[0022] A screw slide is arranged on the top of the workbench;

[0023] A lifting assembly is arranged on the screw slide;

[0024] A placement plate is provided on the top of the lifting assembly, with two clamping plates provided at both ends of the placement plate, and one end of each clamping plate is hinged to one side of the placement plate;

[0025] The angle adjustment component is arranged between the lifting component and the placement plate, and the angle adjustment component is transmission-connected to all the clamping plates.

[0026] Preferably, the lifting assembly includes:

[0027] A fixed plate, arranged on the slider of the screw slide;

[0028] A cylinder is arranged in the middle of the fixed plate;

[0029] A lifting plate is provided on the top of the cylinder, and the center of the lifting plate is fixedly connected to the output shaft of the cylinder;

[0030] Two second limiting rods are respectively provided on one end of the lifting plate, and one end of each second limiting rod is fixedly connected to the placement plate;

[0031] Two first sleeves are respectively located on one side of the cylinder and fixed on the fixing plate, and each of the first sleeves is respectively sleeved on the second limiting rod;

[0032] Two second sleeves are respectively sleeved on the second limiting rod, the bottom of each second sleeve is fixedly connected to the top of the lifting plate, and the top of each second sleeve is against the angle adjustment component.

[0033] Preferably, the angle adjustment component includes:

[0034] An angle adjustment plate, one end of which is respectively sleeved on the second limiting rod, and two connecting arms are respectively provided at both ends of the angle adjustment plate, one end of each connecting arm is hinged to one side of the angle adjustment plate, and the other end is hinged to the bottom of the clamping plate;

[0035] a second motor mounted on the lifting plate;

[0036] The second threaded rod is passed through the center of the angle adjustment plate, and one end of the second threaded rod is hinged to the center of the placement plate, and the other end is rotatably connected to the output shaft of the second motor.

[0037] The beneficial effects of the present invention are as follows: the pipe fittings are fed into the interior of the annular installation box by the feeding assembly, the linkage assembly is driven to work by the driving member, and all the arc-shaped claws are driven by the linkage assembly to synchronously move toward the center of the annular installation box to clamp the pipe fittings, so that the clamping force exerted on the pipe fittings is the same, ensuring the center precision docking between the pipe fittings, and solving the problem of poor center precision of general clamping devices, which leads to low welding quality of pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0040] Figure 2 Schematic diagram of the three-dimensional structure of the linkage assembly according to an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of the three-dimensional structure of the driving member according to an embodiment of the present invention;

[0042] Figure 4 It is a schematic diagram of the planar structure of the feeding assembly according to an embodiment of the present invention.

[0043] The following are marked in the figure:

[0044] 1. Workbench; 2. Annular mounting box; 3. Annular mounting plate; 4. Arc-shaped claw; 5. Annular bevel gear; 6. Mounting frame; 7. First threaded rod; 8. First bevel gear; 9. First limiting rod; 10. Annular groove; 11. Arc-shaped support plate; 12. First motor; 13. Second bevel gear; 14. Screw slide; 15. Placement plate; 16. Clamping plate; 17. Fixing plate; 18. Cylinder; 19. Lifting plate; 20. Second limiting rod; 21. First sleeve; 22. Second sleeve; 23. Angle adjustment plate; 24. Connecting arm; 25. Second motor; 26. Second threaded rod. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0046] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] like Figures 1 to 4 As shown, a welding clamping device for automobile parts includes a workbench 1, a clamping assembly is provided on the top of the workbench, a feeding assembly is provided on one side of the clamping assembly, and the clamping assembly includes:

[0048] An annular mounting box 2 is mounted on the workbench 1;

[0049] An annular mounting plate 3 is provided on one side of the annular mounting box 2, and the annular mounting plate 3 is fixedly connected to the annular mounting box 2;

[0050] A linkage assembly is provided on the annular mounting plate 3, and the linkage assembly is located inside the annular mounting box 2;

[0051] A driving member is provided on the annular mounting box 2 and is in transmission connection with the linkage assembly;

[0052] Four arc-shaped claws 4 are evenly distributed inside the annular mounting box 2, and each of the arc-shaped claws 4 is transmission-connected to the linkage assembly;

[0053] The driving member drives the linkage assembly to work, so that all the arc-shaped claws 4 move synchronously toward the center of the arc-shaped installation box to clamp the pipe fitting.

[0054] The pipe fittings are fed into the interior of the annular mounting box 2 by the feeding assembly, and the linkage assembly is driven to work by the driving member, and all the arc-shaped claws 4 are driven by the linkage assembly to synchronously move toward the center of the annular mounting box 2 to clamp the pipe fittings, so that the pipe fittings are subjected to the same clamping force, ensuring the center precision docking between the pipe fittings, solving the problem of poor center precision of general clamping devices, resulting in low pipe welding quality, and realizing the problem of applying the same clamping force around the pipe fitting to ensure the accuracy of the welding center.

[0055] As an optional embodiment, the linkage component includes:

[0056] An annular bevel gear 5 is rotatably connected to the annular mounting box 2, and the annular bevel gear 5 is rotatably connected to the driving member;

[0057] Four mounting frames 6 are provided in one-to-one correspondence with the arc-shaped claws 4, and each of the mounting frames 6 is fixedly connected to the annular mounting plate 3;

[0058] Four first threaded rods 7 are respectively passed through the mounting frame 6 , and one end of each first threaded rod 7 is fixedly connected to the center of the arc-shaped claw 4 ;

[0059] Four first bevel gears 8 are respectively arranged inside the mounting frame 6, each of the first bevel gears 8 is respectively sleeved on the first threaded rod 7, each of the first bevel gears 8 is respectively rotatably connected to the first threaded rod 7, and each of the first bevel gears 8 is engaged with the annular bevel gear 5.

[0060] As an optional embodiment, a first limiting rod 9 is provided on the side of the first threaded rod 7, each first limiting rod 9 is passed through the mounting frame 6, and one end of each first limiting rod 9 is fixedly connected to the arc-shaped claw 4.

[0061] As an optional embodiment, an annular groove 10 is provided on the side of the annular bevel gear 5 close to the first bevel gear 8, and at least four evenly distributed arc support plates 11 are provided on the annular mounting plate 3, and the top of each of the arc support plates 11 is inserted into the annular groove 10.

[0062] As an optional embodiment, the driving member is a first motor 12, which is mounted on the outside of the annular mounting box 2. The output shaft of the first motor 12 passes through the annular mounting box 2 and is sleeved with a second bevel gear 13, and the second bevel gear 13 is engaged with the annular bevel gear 5.

[0063] As an optional embodiment, the two tips of the arc opening of the arc-shaped claw 4 are straight.

[0064] As an optional embodiment, the feeding assembly includes:

[0065] A screw slide 14 is provided on the top of the workbench 1;

[0066] A lifting assembly is provided on the screw slide 14;

[0067] A placement plate 15 is provided on the top of the lifting assembly, and two clamping plates 16 are respectively provided at both ends of the placement plate 15, and one end of each clamping plate 16 is hinged to one side of the placement plate 15;

[0068] The angle adjustment assembly is arranged between the lifting assembly and the placement plate 15 , and the angle adjustment assembly is transmission-connected to all the clamping plates 16 .

[0069] As an optional embodiment, the lifting assembly includes:

[0070] A fixed plate 17 is provided on the slider of the screw slide 14;

[0071] The cylinder 18 is arranged in the middle of the fixing plate 17;

[0072] A lifting plate 19 is provided on the top of the cylinder 18, and the center of the lifting plate 19 is fixedly connected to the output shaft of the cylinder 18;

[0073] Two second limiting rods 20 are respectively provided at one end of the lifting plate 19, and one end of each second limiting rod 20 is fixedly connected to the placement plate 15;

[0074] Two first sleeves 21 are respectively located on one side of the cylinder 18 and fixed on the fixing plate 17, and each first sleeve 21 is respectively sleeved on the second limiting rod 20;

[0075] Two second sleeves 22 are respectively sleeved on the second limiting rod 20 , the bottom of each second sleeve 22 is fixedly connected to the top of the lifting plate 19 , and the top of each second sleeve 22 is against the angle adjustment assembly.

[0076] As an optional embodiment, the angle adjustment component includes:

[0077] An angle adjustment plate 23, one end of which is respectively sleeved on the second limiting rod 20, and two connecting arms 24 are respectively provided at both ends of the angle adjustment plate 23, one end of each connecting arm 24 is hinged to one side of the angle adjustment plate 23, and the other end is hinged to the bottom of the clamping plate 16;

[0078] A second motor 25 is mounted on the lifting plate 19;

[0079] The second threaded rod 26 is passed through the center of the angle adjustment plate 23 , and one end of the second threaded rod 26 is hinged to the center of the placement plate 15 , and the other end is rotatably connected to the output shaft of the second motor 25 .

[0080] The main working principle of the present invention is as follows: by placing the pipe fittings on the placement plate 15, the second motor 25 drives the second threaded rod 26 to rotate, the second threaded rod 26 drives the angle adjustment plate 23 to move upward, the angle adjustment plate 23 drives the connecting arm 24 to move upward, and the connecting arm 24 pushes the clamping plate 16 to move upward, so that the clamping plate 16 and the placement plate 15 are set at a certain angle, the clamping plate 16 restricts the pipe fittings so that the pipe fittings will not roll and fall during transportation, the cylinder 18 drives the lifting plate 19 to move upward, the lifting plate 19 drives the second motor 25 to move upward, and the second motor 25 drives the second threaded rod 26 to move upward , the second threaded rod 26 drives the placement plate 15 to move upward, so that the pipe fitting rises to a position close to the center of the annular installation box 2, and the second limiting rod 20 cooperates with the first sleeve 21 to prevent the lifting plate 19 from rotating during the upward movement. The screw slide 14 drives the fixing plate 17 to move, so that the pipe fitting enters the interior of the annular installation box 2, and the first motor 12 drives the second bevel gear 13 to rotate, and the second bevel gear 13 drives the annular bevel gear 5 to rotate, and the annular bevel gear 5 drives the first bevel gear 8 to rotate in the installation frame 6, and the first threaded rod 7 is driven to move by the first bevel gear 8, and the first threaded rod 7 pushes the arc-shaped claw 4 to move toward the center of the annular mounting box 2, and clamps the pipe fitting through the arc-shaped claw 4, so that the pipe fitting is subjected to the same force in four directions, ensuring the center accuracy. By arranging an arc-shaped support plate 11 on the annular mounting plate 3 and an annular groove 10 on the arc-shaped bevel gear, the arc-shaped bevel gear will not be separated from the first bevel gear 8 and the second bevel gear 13 during the rotation process, and the arc-shaped claw 4 will not rotate with the first threaded rod 7 during the movement process by arranging a first limiting rod 9 on the mounting frame 6. Pipe fittings, when the pipe fittings are square, the second motor 25 drives the second threaded rod 26 to rotate, and the second threaded rod 26 drives the angle adjustment plate 23 to move, and the angle adjustment plate 23 moves to abut against the second cylinder, so that the clamping plate 16 is flush with the placement plate 15, and then the square pipe fittings are placed on the placement plate 15 for smooth transportation. By setting the two tips of the arc mouth of the arc-shaped claw 4 to a straight shape, the clamping degree of the arc-shaped claw 4 on the side of the square pipe fitting is increased, which solves the problem of poor center accuracy of the general clamping device, resulting in low quality of pipe welding, and ensures the center accuracy of welding for pipe fittings of different shapes, thereby improving the problem of welding quality.

[0081] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0082] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A welding clamping device for automobile parts, comprising a workbench (1), a clamping assembly provided on the top of the workbench, a feeding assembly provided on one side of the clamping assembly, characterized in that: The clamping assembly comprises: An annular mounting box (2) is mounted on the workbench (1); An annular mounting plate (3) is arranged on one side of the annular mounting box (2), and the annular mounting plate (3) is fixedly connected to the annular mounting box (2); A linkage assembly is provided on the annular mounting plate (3), and the linkage assembly is located inside the annular mounting box (2); A driving member is arranged on the annular mounting box (2), and the driving member is in transmission connection with the linkage assembly; Four arc-shaped claws (4) are evenly distributed inside the annular mounting box (2), and each of the arc-shaped claws (4) is transmission-connected to the linkage assembly; The driving member drives the linkage assembly to work, so that all arc-shaped claws (4) move synchronously toward the center of the arc-shaped installation box to clamp the pipe fitting; The feeding assembly comprises: A screw slide (14) is arranged on the top of the workbench (1); A lifting assembly is arranged on the screw slide (14); A placement plate (15) is arranged on the top of the lifting assembly, and two clamping plates (16) are respectively provided at both ends of the placement plate (15), and one end of each clamping plate (16) is hinged to one side of the placement plate (15); An angle adjustment component is arranged between the lifting component and the placement plate (15), and the angle adjustment component is in transmission connection with all the clamping plates (16); The lifting assembly includes: A fixed plate (17) is provided on a slider of the screw slide (14); A cylinder (18) is provided in the middle of the fixed plate (17); A lifting plate (19) is provided on the top of the cylinder (18), and the center of the lifting plate (19) is fixedly connected to the output shaft of the cylinder (18); Two second limiting rods (20) are respectively provided on one end of the lifting plate (19), and one end of each second limiting rod (20) is fixedly connected to the placement plate (15); Two first sleeves (21) are respectively located on one side of the cylinder (18) and fixed on the fixed plate (17), and each first sleeve (21) is respectively sleeved on the second limiting rod (20); Two second sleeves (22) are respectively sleeved on the second limiting rod (20), the bottom of each second sleeve (22) is fixedly connected to the top of the lifting plate (19), and the top of each second sleeve (22) is against the angle adjustment component; The angle adjustment components include: An angle adjustment plate (23), one end of which is respectively sleeved on the second limiting rod (20), and two connecting arms (24) are respectively provided at both ends of the angle adjustment plate (23), one end of each connecting arm (24) is respectively hinged to one side of the angle adjustment plate (23), and the other end is respectively hinged to the bottom of the clamping plate (16); A second motor (25) is mounted on the lifting plate (19); The second threaded rod (26) is passed through the center of the angle adjustment plate (23), and one end of the second threaded rod (26) is hinged to the center of the placement plate (15), and the other end is rotatably connected to the output shaft of the second motor (25).

2. The automobile component welding clamping device according to claim 1, characterized in that: The linkage component includes: An annular bevel gear (5) is rotatably connected to the annular mounting box (2), and the annular bevel gear (5) is rotatably connected to the driving member; Four mounting frames (6) are provided in one-to-one correspondence with the arc-shaped claws (4), and each of the mounting frames (6) is fixedly connected to the annular mounting plate (3); Four first threaded rods (7) are respectively passed through the mounting frame (6), and one end of each first threaded rod (7) is fixedly connected to the center of the arc-shaped claw (4); Four first bevel gears (8) are respectively arranged inside the mounting frame (6), each of the first bevel gears (8) is respectively sleeved on the first threaded rod (7), each of the first bevel gears (8) is respectively rotatably connected to the first threaded rod (7), and each of the first bevel gears (8) is meshed with the annular bevel gear (5).

3. The automobile component welding clamping device according to claim 2, characterized in that: A first limiting rod (9) is provided on the side of each of the first threaded rods (7), each of the first limiting rods (9) is passed through the mounting frame (6), and one end of each of the first limiting rods (9) is fixedly connected to the arc-shaped claw (4).

4. The automobile component welding clamping device according to claim 2, characterized in that: An annular groove (10) is provided on one side of the annular bevel gear (5) close to the first bevel gear (8), and at least four evenly distributed arc-shaped support plates (11) are provided on the annular mounting plate (3), and the top of each arc-shaped support plate (11) is inserted into the annular groove (10).

5. The automobile component welding clamping device according to claim 2, characterized in that: The driving member is a first motor (12), which is mounted outside the annular mounting box (2). The output shaft of the first motor (12) passes through the annular mounting box (2) and is sleeved with a second bevel gear (13), and the second bevel gear (13) is meshed with the annular bevel gear (5).

6. The automobile component welding clamping device according to claim 1, characterized in that: The two tips of the arc opening of the arc-shaped claw (4) are straight.

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