Welding fixture for welding robot

Abstract

The welding clamp comprises a welding platform, a protective shell, a hydraulic cylinder, a sliding platform and a limiting assembly, the protective shell is fixedly connected to the upper surface of the welding platform, feeding ports are formed in the left side and the right side of the protective shell, and a mounting box is fixedly arranged in the middle of the inner top face of the protective shell; the hydraulic cylinders are fixedly mounted on the inner top face of the mounting box in parallel, piston rods of the hydraulic cylinders are fixedly connected with the upper surface of the sliding platform, a sliding rail is arranged on the lower bottom face of the sliding platform, the welding robot is slidably mounted in the sliding rail, and a first control block is fixedly connected to the upper surface of the sliding platform. The two limiting assemblies are arranged on the left side and the right side of the first control block in a bilateral symmetry mode. Through the arrangement of the limiting assembly, the correcting assembly and the positioning column, the operation complexity of the welding robot in the using process is greatly reduced, and meanwhile, through the arrangement of the adjusting rod and the distance adjusting and controlling element, the welding robot can be suitable for welding of parts of various specifications.

Description

Technical Field

[0001] This invention belongs to the field of welding robot technology, and specifically relates to a welding fixture for a welding robot. Background Technology

[0002] With the rapid development of industrial automation, the requirements for efficiency, precision, and stability in welding operations are constantly increasing. Traditional manual welding methods are increasingly unable to meet the demands of large-scale, high-efficiency, and high-quality welding. The emergence of welding robots has greatly improved the efficiency and quality of welding operations. However, for welding robots to reach their maximum effectiveness, they require the cooperation of matching welding fixtures. Many existing welding fixtures, when used with welding robots, are only suitable for workpieces of specific shapes and sizes, and cannot flexibly adapt to different specifications, exhibiting poor versatility. During the welding process, factors such as thermal stress and vibration may cause the workpiece to shift or deform, affecting the welding quality.

[0003] Existing welding fixtures have complex structures, cumbersome usage methods, and are difficult to adjust and maintain. Summary of the Invention

[0004] To address some or all of the technical problems existing in the prior art, the present invention provides a welding fixture for a welding robot, comprising: a welding platform, a protective shell, several sets of hydraulic cylinders, a sliding platform, and two sets of limiting components. The protective shell is fixedly connected to the upper surface of the welding platform. Feed inlets are provided on both the left and right sides of the protective shell. A mounting box is fixedly installed in the center of the inner top surface of the protective shell. The several sets of hydraulic cylinders are fixedly installed on the inner top surface of the mounting box and arranged parallel to each other. The piston rods of the hydraulic cylinders are fixedly connected to the upper surface of the sliding platform. A sliding track is provided on the lower bottom surface of the sliding platform. The welding robot is slidably installed in the sliding track. A control block is fixedly connected to the upper surface of the sliding platform. An inclined surface is provided on both the left and right sides of the control block. The distance from the upper end of the inclined surface to the vertical axis is greater than the distance from the lower end to the vertical axis. The two sets of limiting components are symmetrically arranged on the left and right sides of the control block.

[0005] The limiting assembly includes: mounting bracket one, mounting bracket two, a horizontal control rod, and a vertical control rod. Mounting bracket one is fixedly connected to the inner wall of the protective housing, and mounting bracket two is fixedly connected to the outer wall of the mounting box. One end of the horizontal control rod is slidably connected to mounting bracket one in the left-right direction and is fixedly connected to the inner wall of mounting bracket one by a spring one. The other end of the horizontal control rod slides through the side wall of the mounting box and contacts the inclined surface one. A limiting post is fixedly connected to the side wall of the horizontal control rod. The middle section of the vertical control rod is rotatably connected to mounting bracket two. A sliding groove is provided at the upper end of the vertical control rod, and the limiting post is slidably connected in the sliding groove.

[0006] Preferably, the lower end of the vertical control rod is provided with an adjustment cavity, an adjustment rod is slidably connected in the adjustment cavity, a spring is fixedly connected between the adjustment rod and the inner wall of the adjustment cavity, and a rubber ball is provided at the lower end of the adjustment rod.

[0007] Preferably, the system further includes two sets of symmetrically arranged correction components. Each correction component includes a control block two, a trigger rod, and several sets of correction plate kits. The control block has an inclined surface two, the distance of the inclined surface two from the central vertical plane is greater than the distance of its lower end from the central vertical plane. A limit plate is fixedly connected to the lower bottom surface of the control block two. The limit plate is slidably connected in the front-back direction in a sliding groove provided on the upper surface of the welding platform. A spring three is fixedly connected between the limit plate and the inner wall of the sliding groove. The trigger rod is fixedly connected to the lower surface of the sliding platform, and the lower end of the trigger rod is in contact with the inclined surface two. The correction plate kits are evenly arranged in pairs on the side walls of the control block two that are close to each other.

[0008] Preferably, the correction plate kit includes a distance adjustment element and a plate body. The plate body is mounted on the control block two via the distance adjustment element, and the distance adjustment element is used to adjust the distance between the plate body and the control block two.

[0009] Preferably, the distance control element is an electric telescopic rod.

[0010] Preferably, the upper surface of the welding platform is provided with a storage groove, and a mounting plate that slides vertically is provided in the storage groove. The bottom surface of the mounting plate is fixedly mounted on the bottom surface of the storage groove by several springs. Control blocks are fixedly connected to the front and rear sides of the upper surface of the mounting plate. An inclined surface is provided on the control block. The distance from the upper end of the inclined surface to the central vertical plane is greater than the distance from the lower end to the central vertical plane. Several replaceable positioning posts are also installed on the upper surface of the mounting plate.

[0011] The welding fixture for welding robots of the present invention has the following advantages and beneficial effects:

[0012] This invention, through the setting of limiting components, correction components and positioning columns, only requires controlling the lifting and lowering of the sliding platform to simultaneously complete the welding robot reaching the working position, the position correction of the part to be welded, and the position fixation of the part to be welded, which greatly reduces the operational complexity of the welding robot and the workload of the staff. Through the setting of adjustment rod and distance control element, this invention can be applied to the welding of parts of various specifications, and the adjustment process is simple and easy to operate, reducing the workload of the staff. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0014] Figure 1 This is a front sectional view of the welding fixture for the welding robot of the present invention;

[0015] Figure 2 yes Figure 1 Schematic diagram of cross-section at point AA.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Welding platform; 2. Protective shell; 3. Hydraulic cylinder; 4. Sliding platform; 5. Feed inlet; 6. Mounting box; 7. Welding robot; 8. Control block one; 9. Inclined surface one; 10. Mounting bracket one; 11. Mounting bracket two; 12. Horizontal control rod; 13. Vertical control rod; 14. Spring one; 15. Limiting post; 16. Sliding groove; 17. Adjustment cavity; 18. Adjusting rod; 19. Spring two; 20. Rubber ball; 21. Control block two; 22. Trigger rod; 23. Inclined surface two; 24. Limiting plate; 25. Spring three; 26. Sliding groove; 27. Distance adjustment element; 28. Plate; 29. ​​Storage groove; 30. Mounting plate; 31. Spring four; 32. Control block three; 33. Inclined surface three; 34. Positioning post. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0019] like Figures 1 to 2As shown, the welding fixture for welding robots provided by the present invention includes: a welding platform 1, a protective shell 2, several sets of hydraulic cylinders 3, a sliding platform 4, and two sets of limiting components. The protective shell 2 is fixedly connected to the upper surface of the welding platform 1. Feed inlets 5 are provided on both the left and right sides of the protective shell 2. A mounting box 6 is fixedly provided in the middle of the inner top surface of the protective shell 2. The several sets of hydraulic cylinders 3 are fixedly installed on the inner top surface of the mounting box 6 and arranged parallel to each other. The piston rods of the hydraulic cylinders 3 are fixedly connected to the upper surface of the sliding platform 4. A sliding track is provided on the lower bottom surface of the sliding platform 4. A welding robot 7 is slidably installed in the sliding track. A control block 8 is fixedly connected to the upper surface of the sliding platform 4. Inclined surfaces 9 are provided on both the left and right sides of the control block 8. The distance from the upper end of the inclined surface 9 to the vertical axis is greater than the distance from the lower end to the vertical axis. The two sets of limiting components are symmetrically arranged on the left and right sides of the control block 8.

[0020] The limiting assembly includes: mounting bracket 10, mounting bracket 2 11, horizontal control rod 12, and vertical control rod 13. Mounting bracket 10 is fixedly connected to the inner wall of the protective shell 2, and mounting bracket 2 11 is fixedly connected to the outer wall of the mounting box 6. One end of the horizontal control rod 12 is slidably connected to the mounting bracket 10 in the left-right direction and is fixedly connected to the inner wall of the mounting bracket 10 by a spring 14. The other end of the horizontal control rod 12 slides through the side wall of the mounting box 6 and contacts the inclined surface 9. A limiting post 15 is fixedly connected to the side wall of the horizontal control rod 12. The middle section of the vertical control rod 13 is rotatably connected to the mounting bracket 2 11. A sliding groove 16 is provided at the upper end of the vertical control rod 13, and the limiting post 15 is slidably connected in the sliding groove 16.

[0021] In the initial state, the hydraulic cylinder 3 is in a retracted state. When welding parts, the parts to be welded are placed in through the feed ports 5 on the left and right sides of the protective shell 2. The hydraulic cylinder 3 is controlled to extend and drive the sliding platform 4 to descend, so that the welding robot 7 is close to the parts to be welded, which facilitates the welding of the parts. This reduces the required stroke of the welding robot 7, which is conducive to the miniaturization of the welding robot 7. At the same time, it avoids the collision between the parts and the welding robot 7 during the placement process, which would cause damage to the welding robot 7.

[0022] As the sliding platform 4 descends, the horizontal control rods 12 are pushed apart by the inclined plane 9, causing the vertical control rod 13 to rotate via the limiting post 15. This causes the lower end of the vertical control rod 13 to contact the part and generate a frictional force that pushes the part towards the central axis. This brings the parts to be welded closer together and fixes them during the welding process, thus improving the welding effect. After the parts are welded, the sliding platform 4 moves upward as the hydraulic cylinder 3 retracts. Under the action of the spring 14, the horizontal control rod 12 automatically returns to its initial position, which in turn drives the vertical control rod 13 back to its initial position, releasing the parts.

[0023] With the cooperation of the limit component and control block 8, the automatic approach and automatic fixation of the parts after placement and before welding are realized. The method of use is simple, no additional operation is required, and the workload of the staff is reduced.

[0024] Preferably, the lower end of the vertical control rod 13 is provided with an adjustment cavity 17, an adjustment rod 18 is slidably connected in the adjustment cavity 17, a spring 19 is fixedly connected between the adjustment rod 18 and the inner wall of the adjustment cavity 17, and a rubber ball 20 is provided at the lower end of the adjustment rod 18.

[0025] By setting the adjustment rod 18, the present invention can be adapted to parts of different thicknesses without the need for adjustment, which further improves the convenience of operation. The double buffering of spring 19 and rubber ball 20 avoids damage to the surface of the parts.

[0026] Preferably, the system further includes two sets of symmetrically arranged correction components. Each correction component includes a control block 21, a trigger rod 22, and several sets of correction plate kits. The control block is provided with a second inclined surface 23. The distance of the second inclined surface 23 from the central vertical plane is greater than the distance of its lower end from the central vertical plane. A limit plate 24 is fixedly connected to the bottom surface of the control block 21. The limit plate 24 is slidably connected in the front-back direction within a sliding groove 26 provided on the upper surface of the welding platform 1. A third spring 25 is fixedly connected between the limit plate 24 and the inner wall of the sliding groove 26. The trigger rod 22 is fixedly connected to the lower surface of the sliding platform 4, and the lower end of the trigger rod 22 is in contact with the second inclined surface 23. The correction plate kits are evenly arranged in pairs on the side walls of the control block 21 that are close to each other.

[0027] Preferably, the correction plate kit includes a distance adjustment element 27 and a plate body 28. The plate body 28 is mounted on the control block 21 via the distance adjustment element 27. The distance adjustment element 27 is used to adjust the distance between the plate body 28 and the control block 21.

[0028] Preferably, the distance control element 27 is an electric telescopic rod.

[0029] As the sliding platform 4 descends, the trigger rod 22 moves downward, which in turn pushes the control blocks 21 on both sides to move closer together, thereby causing the plates 28 to move closer together. This achieves automatic correction of the position of the parts before welding, eliminating the need for manual operation by the staff, further improving the convenience of operation, and ensuring the stability of the welding effect.

[0030] By setting the distance adjustment element 27, the distance between the plates 28 can be adjusted, thereby enabling the present invention to be adapted to parts of different specifications and improving the applicability of the present invention.

[0031] Preferably, the upper surface of the welding platform 1 is provided with a storage groove 29, and a mounting plate 30 that slides in the vertical direction is provided in the storage groove 29. The bottom surface of the mounting plate 30 is fixedly installed on the bottom surface of the storage groove 29 by a number of springs 31. Control blocks 32 are fixedly connected to both the front and rear sides of the upper surface of the mounting plate 30. An inclined surface 33 is provided on the control block 32. The distance from the upper end of the inclined surface 33 to the central vertical plane is greater than the distance from the lower end to the central vertical plane. A number of replaceable positioning posts 34 are also installed on the upper surface of the mounting plate 30.

[0032] When control blocks 21 approach each other, control block 32 will be squeezed and move downward, so that positioning post 34 is automatically put into storage slot 29. No additional operation is required for staff to put the positioning post 34 into storage, further reducing the complexity of operation.

[0033] By setting the positioning post 34, sufficient gaps can be left between parts when positioning and fixing them according to the welding requirements of the parts, thereby ensuring the welding effect. Through the cooperation of control block 21 and control block 32, the positioning post 34 is automatically stored before welding, which reduces the complexity of operation and improves the automation of welding action.

[0034] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Meanwhile, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding fixture for a welding robot, characterized in that, include: The welding platform (1), protective shell (2), several sets of hydraulic cylinders (3), sliding platform (4) and two sets of limiting components are provided. The protective shell (2) is fixedly connected to the upper surface of the welding platform (1). The left and right sides of the protective shell (2) are provided with feed inlets (5). The middle of the inner top surface of the protective shell (2) is fixedly provided with an installation box (6). The several sets of hydraulic cylinders (3) are fixedly installed on the inner top surface of the installation box (6) and are arranged parallel to each other. The piston rod of the hydraulic cylinder (3) is fixedly connected to the upper surface of the sliding platform (4). The bottom surface of the sliding platform (4) is provided with a sliding track. The welding robot (7) is slidably installed in the sliding track. The upper surface of the sliding platform (4) is fixedly connected with a control block (8). The left and right sides of the control block (8) are provided with inclined surfaces (9). The distance from the upper end of the inclined surface (9) to the vertical axis is greater than the distance from the lower end to the vertical axis. The two sets of limiting components are symmetrically arranged on the left and right sides of the control block (8). The limiting assembly includes: mounting bracket one (10), mounting bracket two (11), horizontal control rod (12), and vertical control rod (13). Mounting bracket one (10) is fixedly connected to the inner wall of the protective shell (2). Mounting bracket two (11) is fixedly connected to the outer wall of the mounting box (6). One end of the horizontal control rod (12) is slidably connected to the mounting bracket one (10) in the left-right direction and is fixedly connected to the inner wall of the mounting bracket one (10) with a spring one (14). The other end of the horizontal control rod (12) slides through the side wall of the mounting box (6) and contacts the inclined surface one (9). A limiting post (15) is fixedly connected to the side wall of the horizontal control rod (12). The middle section of the vertical control rod (13) is rotatably connected to the mounting bracket two (11). A sliding groove (16) is provided at the upper end of the vertical control rod (13). The limiting post (15) is slidably connected to the sliding groove (16).

2. The welding fixture for a welding robot according to claim 1, characterized in that, The lower end of the vertical control rod (13) is provided with an adjustment cavity (17), and an adjustment rod (18) is slidably connected inside the adjustment cavity (17). A spring (19) is fixedly connected between the adjustment rod (18) and the inner wall of the adjustment cavity (17). A rubber ball (20) is provided at the lower end of the adjustment rod (18).

3. The welding fixture for a welding robot according to claim 1, characterized in that, It also includes two sets of symmetrical correction components. The correction components include: control block two (21), trigger rod (22) and several sets of correction plate kits. The control block is provided with inclined surface two (23). The distance of the inclined surface two (23) from the central vertical plane is greater than the distance of the lower end from the central vertical plane. The bottom surface of the control block two (21) is fixedly connected to a limiting plate (24). The limiting plate (24) is slidably connected in the front-back direction in the sliding groove (26) provided on the upper surface of the welding platform (1). The limiting plate (24) and the inner wall of the sliding groove (26) are fixedly connected to a spring three (25). The trigger rod (22) is fixedly connected to the lower surface of the sliding platform (4) and the lower end of the trigger rod (22) is in contact with the inclined surface two (23). The correction plate kits are evenly arranged in pairs on the side walls of the control block two (21) that are close to each other.

4. The welding fixture for a welding robot according to claim 3, characterized in that, The correction plate kit includes a distance adjustment element (27) and a plate body (28). The plate body (28) is mounted on the control block two (21) via the distance adjustment element (27). The distance adjustment element (27) is used to adjust the distance between the plate body (28) and the control block two (21).

5. The welding fixture for a welding robot according to claim 4, characterized in that, The distance control element (27) is an electric telescopic rod.

6. The welding fixture for a welding robot according to claim 3, characterized in that, The welding platform (1) has a storage groove (29) on its upper surface. A mounting plate (30) that slides in the vertical direction is provided in the storage groove (29). The bottom surface of the mounting plate (30) is fixedly installed on the bottom surface of the storage groove (29) by several springs (31). Control blocks (32) are fixedly connected to the front and rear sides of the upper surface of the mounting plate (30). An inclined surface (33) is provided on the control block (32). The distance from the upper end of the inclined surface (33) to the central vertical plane is greater than the distance from the lower end to the central vertical plane. Several replaceable positioning columns (34) are also installed on the upper surface of the mounting plate (30).

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