A welding positioning tool equipment for water tank beam processing

Abstract

The utility model discloses a kind of welding positioning tooling equipment for water tank beam processing, it is related to water tank beam welding technical field, including processing table, the top of processing table is transversely provided with four chutes, four chutes are a group in twos, two groups of chutes are parallel design, and spacing is equipped between two groups of chutes, the top of processing table is transversely provided with two movable slots, single movable slot is located between two chutes of same group, the inside of processing table is provided with the installation groove of through;End fixed mechanism, end fixed mechanism includes first screw rod and first sliding base, first screw rod is double-end ball screw rod.The utility model can adjust end fixed mechanism spacing and middle movable frame position as needed, so that it can be adapted to different length crossbeam, greatly improve the application range of equipment, and end and middle double clamping support, can effectively avoid crossbeam deformation damage condition, can effectively improve crossbeam stability simultaneously, guarantee welding precision, overall practicality is higher.

Description

Technical Field

[0001] This utility model relates to the field of water tank beam welding technology, and in particular to a welding positioning fixture for processing water tank beams. Background Technology

[0002] The radiator crossbeam is a crucial component of the front-end frame of a car, and its welding precision directly affects the assembly quality of parts such as the radiator and condenser, as well as the overall frontal collision safety performance of the vehicle. During the welding process, positioning fixtures are used to secure the various components of the radiator crossbeam to improve its welding stability, as follows.

[0003] A search revealed a patent with publication number CN212652944U, which discloses a welding fixture for the upper crossbeam of a water tank. The fixture comprises a first clamping seat, a second clamping seat, a third clamping seat, a fourth clamping seat, and a support seat. The support seat supports the upper crossbeam of the water tank to be welded, while the first, second, third, and fourth clamping seats apply a downward force to the upper crossbeam, thus positioning the crossbeam on the fixture before welding. This improves welding efficiency and enables rapid, high-precision welding production.

[0004] However, the above-mentioned beam welding fixture still has the following areas for improvement. For example, the support mechanism and clamping mechanism used to support and clamp the beam are both fixed in position, which means that it can only clamp, position, fix and weld beams of a single size, resulting in a limited range of applications. Therefore, there is an urgent need for a welding positioning fixture for water tank beam processing to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model discloses a welding positioning fixture for processing water tank crossbeams. It features an end-fixing mechanism that, during operation, a first drive motor drives a first lead screw to rotate, causing two first sliders to move in opposite or relative directions along the lead screw. This, in turn, causes two first sliding blocks to move synchronously along a sliding groove. The distance between the two fixing frames can be adjusted according to the actual length of the water tank crossbeam. A first electric cylinder pushes a first pressure plate to clamp and fix the crossbeam near its end against the inner bottom surface of the fixing frame. This allows for the adaptation of crossbeams of different lengths without changing the fixture, effectively improving the applicability of the equipment. In summary, this solves the problems in the background technology.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model discloses a welding positioning fixture for processing water tank crossbeams, including a processing table. The top of the processing table has four horizontally opened sliding grooves, which are arranged in pairs. The two sets of sliding grooves are designed in parallel and have a gap between them. The top of the processing table has two horizontally opened movable grooves, with each movable groove located between the two sets of sliding grooves in the same group. The processing table has a through mounting groove inside.

[0008] An end-fixing mechanism includes a first lead screw and a first slide block. The first lead screw is a double-ended ball screw, which is rotatably mounted in a mounting groove via two first bearing seats. A first drive motor is externally connected to the shaft end of the first lead screw. The first drive motor is fixedly connected to one side of the processing table via a connecting seat. Two first sliders are screwed onto the outside of the first lead screw. There are two first slide blocks. The bottoms of the two first slide blocks are slidably connected to one set of slide grooves via sliding connectors. The tops of the two first sliders pass through the same movable groove and are fixedly connected to the bottom of the first slide block. A first support column is fixedly connected to the top of the first slide block. A fixing frame is fixedly connected to the top of the first support column. The fixing frame is in the shape of an inverted U-shape. A first electric cylinder is fixedly installed through the top of the fixing frame. A first pressure plate is fixedly connected to the telescopic end of the first electric cylinder.

[0009] Furthermore, the bottom surface of the inner side of the fixing frame and the bottom surface of the first pressure plate are both fitted with a first anti-slip pad layer, which is made of rubber material.

[0010] Furthermore, in another set of the slide grooves, two second slide blocks are slidably installed via sliding connectors. A second lead screw is rotatably installed in the mounting groove via two second bearing seats. A second drive motor is externally connected to the shaft end of the second lead screw. The second drive motor is fixedly connected to one side of the processing table via a connecting seat. Two second sliders are screwed onto the outside of the second lead screw. The tops of the second sliders pass through another movable groove and are fixedly connected to the bottom of the second slide block. A second support column is fixedly connected to the top of the second slide block. A mounting base is fixedly connected to the top of the second support column. The mounting base is L-shaped. A second electric cylinder is fixedly installed through the L-shaped turning surface of the mounting base. A movable frame is fixedly connected to the telescopic end of the second electric cylinder. The movable frame has the same structure as the fixed frame, and their opening directions are opposite. A third electric cylinder is fixedly installed through the top of the movable frame. A second pressure plate is fixedly connected to the telescopic end of the third electric cylinder.

[0011] Furthermore, the bottom surface of the movable frame and the bottom surface of the second pressure plate are both fitted and fixed with a second anti-slip pad layer, which is made of rubber material.

[0012] Furthermore, four guide rods are fixedly connected to one side of the movable frame, one end of each of the four guide rods movably passes through the mounting base, and the four guide rods are arranged in a matrix.

[0013] Furthermore, the bottoms of the first and second slides are close to but not in contact with the top of the processing table, and the outer walls of the first and second sliders are close to but not in contact with the inner walls of the two movable slots.

[0014] The present invention has the following advantages over the prior art:

[0015] 1. This technical solution, by setting an end fixing mechanism, enables the first drive motor to drive the first lead screw to rotate during operation, thereby causing the two first sliders to move in opposite or relative directions along the lead screw, and in turn causing the two first slide blocks to move synchronously along the slide groove. The distance between the two fixing frames can be adjusted according to the actual length of the water tank beam. Then, the first electric cylinder pushes the first pressure plate to cooperate with the inner bottom surface of the fixing frame to clamp and fix the beam near the end. It can adapt to beams of different lengths without changing tooling, effectively improving the applicability of the equipment and making it highly practical.

[0016] 2. This technical solution, by incorporating a second slide block, mounting base, movable frame, second electric cylinder, and second pressure plate, allows the second slide block to move along the slide groove via a second drive motor driven by a second lead screw during operation. The movable frame is then adjusted to the middle of the crossbeam to be supported and clamped. The second electric cylinder pushes the movable frame to adjust it to fit the crossbeam. A third electric cylinder then pushes the second pressure plate to cooperate with the inner bottom surface of the movable frame to achieve auxiliary clamping and support for the middle position of the crossbeam, providing a stable support point for the middle of the crossbeam. This effectively prevents deformation of the crossbeam in the middle due to its own weight or welding stress, further improving the overall stability of the crossbeam during welding and ensuring welding accuracy. It is highly practical. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the exploded structure of the first lead screw installation of this utility model;

[0021] Figure 4 This is a schematic diagram of the first pressure plate mounting structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the second pressure plate installation structure of this utility model.

[0023] In the diagram: 1. Machining table; 2. Slide groove; 3. Movable groove; 4. Mounting groove; 5. First lead screw; 6. First slide block; 7. First bearing seat; 8. First drive motor; 9. First slider; 10. First support column; 11. Fixing frame; 12. First electric cylinder; 13. First pressure plate; 14. First anti-slip pad; 15. Second slide block; 16. Second bearing seat; 17. Second lead screw; 18. Second drive motor; 19. Second slider; 20. Second support column; 21. Mounting seat; 22. Second electric cylinder; 23. Movable frame; 24. Third electric cylinder; 25. Second pressure plate; 26. Second anti-slip pad; 27. Guide rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "surface", "side", "gap", "peripheral", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Reference Figures 1-5 A welding positioning fixture for processing water tank crossbeams includes a processing table 1. The top of the processing table 1 has four horizontally opened sliding grooves 2. The four sliding grooves 2 are arranged in pairs, and the two sets of sliding grooves 2 are designed in parallel and have a gap between them. The top of the processing table 1 has two horizontally opened movable grooves 3. Each movable groove 3 is located between the two sliding grooves 2 in the same set. The processing table 1 has a through mounting groove 4 inside.

[0027] The end fixing mechanism includes a first lead screw 5 and a first slide block 6. The first lead screw 5 is a double-ended ball screw. The first lead screw 5 is rotatably installed in the mounting groove 4 through two first bearing seats 7. The shaft end of the first lead screw 5 is externally connected to a first drive motor 8. The first drive motor 8 is fixedly connected to one side of the processing table 1 through a connecting seat. Two first sliders 9 are screwed to the outside of the first lead screw 5. There are two first slide blocks 6. The bottom of the two first slide blocks 6 is slidably connected to one of the sliding grooves 2 through a sliding connector. The top of the two first sliders 9 passes through the same movable groove 3 and is fixedly connected to the bottom of the first slide block 6. A first support column 10 is fixedly connected to the top of the first slide block 6. A fixing frame 11 is fixedly connected to the top of the first support column 10. The fixing frame 11 is in the shape of an inverted U. A first electric cylinder 12 is fixedly installed through the top of the fixing frame 11. A first pressure plate 13 is fixedly connected to the telescopic end of the first electric cylinder 12.

[0028] The bottom surface of the inner side of the fixing frame 11 and the bottom surface of the first pressure plate 13 are both fitted with a first anti-slip pad 14, which is made of rubber material.

[0029] Two second slide blocks 15 are slidably installed at another set of slide grooves 2 via sliding connectors. A second lead screw 17 is rotatably installed in the mounting groove 4 via two second bearing seats 16. A second drive motor 18 is externally connected to the shaft end of the second lead screw 17. The second drive motor 18 is fixedly connected to one side of the processing table 1 via a connecting seat. Two second sliders 19 are screwed onto the outside of the second lead screw 17. The tops of the second sliders 19 pass through another movable groove 3 and are fixedly connected to the bottom of the second slide block 15. The tops of the second slide blocks 15 are fixedly connected to... There is a second support column 20, and a mounting base 21 is fixedly connected to the top of the second support column 20. The mounting base 21 is L-shaped, and a second electric cylinder 22 is fixedly installed through the L-shaped turning surface of the mounting base 21. A movable frame 23 is fixedly connected to the telescopic end of the second electric cylinder 22. The movable frame 23 has the same structure as the fixed frame 11, and the opening directions of the movable frame 23 and the fixed frame 11 are opposite to each other. A third electric cylinder 24 is fixedly installed through the top of the movable frame 23, and a second pressure plate 25 is fixedly connected to the telescopic end of the third electric cylinder 24.

[0030] The bottom surface of the movable frame 23 and the bottom surface of the second pressure plate 25 are both fitted with a second anti-slip pad 26, which is made of rubber material. Four guide rods 27 are fixedly connected to one side of the movable frame 23. One end of each of the four guide rods 27 passes through the mounting base 21, and the four guide rods 27 are arranged in a matrix. The bottom of the first slide 6 and the second slide 15 are close to but do not contact the top of the processing table 1. The outer walls of the first slider 9 and the second slider 19 are close to but do not contact the inner walls of the two movable grooves 3.

[0031] In the specific implementation process, when it is necessary to weld and position the water tank beam, firstly adjust the spacing of the end fixing mechanism according to the length of the water tank beam to be processed, start the first drive motor 8, the first drive motor 8 drives the first lead screw 5 connected to its shaft end to rotate. Since the first lead screw 5 is a double-ended ball screw, the two first sliders 9 screwed to its outside will move synchronously in opposite directions along the axis of the lead screw. The top of the first slider 9 passes through the movable groove 3 of the processing table 1 and is fixedly connected to the first slide block 6. The bottom of the first slide block 6 is slidably engaged with a set of slide grooves 2 of the processing table 1 through a sliding connector. Therefore, when the first slider 9 moves, it will drive the two first slide blocks 6 to move smoothly along the slide grooves 2 until the spacing between the top fixing brackets 11 of the two first slide blocks 6 is adapted to the length of the water tank beam. Then the first drive motor 8 is turned off.

[0032] Place both ends of the water tank beam on the inner bottom surface of the two fixed frames 11 respectively. Activate the first electric cylinder 12 at the top of the two fixed frames 11. The telescopic end of the first electric cylinder 12 extends downward, pushing the first pressure plate 13 fixed at the bottom to move down synchronously until the first anti-slip pad 14 on the bottom surface of the first pressure plate 13 is tightly attached to the upper surface of the water tank beam. At this time, the first anti-slip pad 14 on the inner bottom surface of the fixed frame 11 and the first anti-slip pad 14 on the first pressure plate 13 form an upper and lower clamp. Utilize the anti-slip properties of the rubber material to increase the friction with the beam, thereby achieving a stable clamping of the end of the water tank beam and completing the end positioning.

[0033] To prevent deformation of the middle part of the crossbeam due to its own weight or welding stress, it is necessary to use a middle support clamping mechanism for auxiliary fixation. That is, start the second drive motor 18, drive the second lead screw 17 to rotate, and the two second sliders 19 outside the second lead screw 17 move along the lead screw, thereby driving the second slide block 15 fixedly connected to the second slider 19 to slide along another set of slide grooves 2. According to the length of the crossbeam and the welding position requirements, adjust the two second slide blocks 15 to the middle of the crossbeam to be supported position and then turn off the second drive motor 18.

[0034] After the position of the second slide block 15 is adjusted, the second electric cylinder 22 on the mounting base 21 is activated. The telescopic end of the second electric cylinder 22 extends and pushes the movable frame 23 towards the water tank crossbeam. The four matrix-type guide rods 27 on one side of the movable frame 23 slide synchronously along the mounting base 21 to ensure that the movable frame 23 remains stable and does not deviate during the movement. When the inner bottom surface of the movable frame 23 is in contact with the lower surface of the middle part of the water tank crossbeam, the second electric cylinder 22 is closed. Then, the third electric cylinder 24 on the top of the movable frame 23 is activated. The telescopic end of the third electric cylinder 24 pushes the second pressure plate 25 downward, so that the second anti-slip pad layer 26 on the bottom surface of the second pressure plate 25 is in close contact with the upper surface of the crossbeam. Through the clamping action of the inner bottom surface of the movable frame 23 and the second pressure plate 25, the auxiliary support and clamping of the middle part of the crossbeam are completed. After the end and middle positioning and fixing are completed, the welding operation of the water tank crossbeam can be carried out.

[0035] Among them, the bottom of the first slide block 6 and the second slide block 15 are close to but do not contact the top of the processing table 1, and the outer walls of the first slider 9 and the second slider 19 are close to but do not contact the inner wall of the movable groove 3, which effectively reduces the frictional resistance during the sliding process and ensures the positioning accuracy.

[0036] Among them, the first anti-slip pad 14 and the second anti-slip pad 26 are made of rubber material. The rough texture of their surface can significantly increase the static friction with the surface of the water tank beam, and prevent the beam from shifting due to vibration or external force during the welding process. At the same time, the elastic properties of rubber can buffer the clamping force and prevent the beam surface from having clamp marks or deformation.

[0037] Among them, the four guide rods 27 on one side of the movable frame 23 are distributed in a matrix and pass through the mounting base 21. This design allows the guide rods 27 to provide multi-directional guidance and limit for the movable frame 23 when the second electric cylinder 22 pushes the movable frame 23 to move, so as to prevent the movable frame 23 from tilting or shaking, and to ensure that the inner bottom surface of the movable frame 23 can be precisely fitted with the surface of the crossbeam, thereby improving the stability of the middle support.

[0038] The first lead screw 5 and the second lead screw 17 are both rotatably mounted in the mounting groove 4 of the processing table 1 through bearing seats. The bearing seats can reduce the friction coefficient when the lead screw rotates, ensure the smoothness of the lead screw rotation, and at the same time play an axial positioning role for the lead screw, preventing the lead screw from moving during rotation, and further improving the accuracy of the slide movement.

[0039] Among them, the first slide 6 and the second slide 15 are respectively engaged with two sets of parallel slide grooves 2, and there is a gap between the two sets of slide grooves 2. This layout makes the end fixing mechanism and the middle support mechanism independent of each other in space, and there will be no interference during the adjustment process. The position of each mechanism can be flexibly adjusted according to the actual size of the crossbeam to adapt to the processing requirements of crossbeams of different specifications.

[0040] The bottoms of the first slide 6 and the second slide 15 are close to but not in contact with the top of the processing table 1 to avoid friction and wear between the first slide 6 and the second slide 15 and the processing table 1. The outer walls of the first slider 9 and the second slider 19 are close to but not in contact with the inner walls of the two movable grooves 3 to avoid friction and wear between the first slider 9 and the second slider 19 and the two movable grooves 3.

[0041] The sliding connector includes a T-shaped slider fixed to the bottom of the first slide block 6 / the second slide block 15. The cross-sectional shape of the groove 2 is a T-shaped groove adapted to the T-shaped slider. The T-shaped slider is embedded in the T-shaped groove and can slide along the length of the groove. The clearance between the T-shaped slider and the T-shaped groove is controlled at 0.02-0.05mm to ensure smooth sliding without obvious shaking.

[0042] Among them, the first drive motor 8 and the second drive motor 18 are both servo motors with a power of 0.75kW, a rated speed of 1500r / min, and an output torque of not less than 20N・m. The motors are equipped with encoders, which can realize precise control of the sliding position and meet the spacing adjustment requirements of water tank crossbeams of different lengths (length range 500-1500mm).

[0043] A linear bearing (not shown in the figure) is installed at the penetration point between the guide rod 27 and the mounting base 21. The inner ring of the linear bearing is interference-fitted with the guide rod 27, and the outer ring is transition-fitted with the mounting hole of the mounting base 21. The diameter of the guide rod 27 is 12mm, and the linear bearing is LM12UU. This ensures that the coefficient of friction of the guide rod 27 is ≤0.001 when it moves along the mounting base 21, and that the movement is smooth and without jamming.

[0044] Among them, the effective stroke of the first electric cylinder 12 and the third electric cylinder 24 is 50-100mm, which can be adapted to the water tank crossbeam with a thickness of 10-50mm; the effective stroke of the second electric cylinder 22 is 100-200mm, which can meet the 0-150mm gap adjustment requirements between the crossbeam and the movable frame 23.

[0045] The first anti-slip pad 14 and the second anti-slip pad 26 are made of nitrile rubber with a Shore hardness of 60-70HA and a volume wear rate of ≤0.05cm³ / (N・m). After 1000 clamping cycles, they can still maintain a surface roughness Ra≤1.6μm, ensuring a stable anti-slip effect during long-term use, preventing beam displacement, and ensuring welding accuracy.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A welding positioning fixture for processing water tank crossbeams, comprising a processing table (1), characterized in that: The top of the processing table (1) is provided with four horizontal sliding grooves (2), the four sliding grooves (2) are in pairs, the two sets of sliding grooves (2) are designed in parallel, and there is a gap between the two sets of sliding grooves (2). The top of the processing table (1) is provided with two horizontal movable grooves (3), and each movable groove (3) is located between the two sliding grooves (2) in the same set. The processing table (1) is provided with a through mounting groove (4). The end fixing mechanism includes a first lead screw (5) and a first slide block (6). The first lead screw (5) is a double-ended ball screw. The first lead screw (5) is rotatably mounted in the mounting groove (4) through two first bearing seats (7). The shaft end of the first lead screw (5) is externally connected to a first drive motor (8). The first drive motor (8) is fixedly connected to one side of the processing table (1) through a connecting seat. The outside of the first lead screw (5) is screwed with two first sliders (9). There are two first slide blocks (6). The bottom of the two first slide blocks (6) is... Each part is slidably connected to one of the sliding grooves (2) through a sliding connector. The tops of the two first sliders (9) pass through the same movable groove (3) and are fixedly connected to the bottom of the first slide block (6). The top of the first slide block (6) is fixedly connected to a first support column (10). The top of the first support column (10) is fixedly connected to a fixed frame (11). The fixed frame (11) is in the shape of an inverted U. The top of the fixed frame (11) is fixedly installed with a first electric cylinder (12) through a through-hole. The telescopic end of the first electric cylinder (12) is fixedly connected to a first pressure plate (13).

2. The welding positioning fixture for processing water tank crossbeams according to claim 1, characterized in that: The bottom surface of the inner side of the fixing frame (11) and the bottom surface of the first pressure plate (13) are both fitted with a first anti-slip pad (14), which is made of rubber material.

3. The welding positioning fixture equipment for processing water tank crossbeams according to claim 1, characterized in that: Two second slide blocks (15) are slidably installed at the other set of slide grooves (2) via sliding connectors. A second lead screw (17) is rotatably installed in the mounting groove (4) via two second bearing seats (16). A second drive motor (18) is externally connected to the shaft end of the second lead screw (17). The second drive motor (18) is fixedly connected to one side of the processing table (1) via a connecting seat. Two second sliders (19) are screwed to the outside of the second lead screw (17). The top of each of the second sliders (19) passes through another movable groove (3) and is fixedly connected to the bottom of the second slide block (15). The top of the second slide block (15) is fixedly connected to the first... Two support columns (20), the top of the second support column (20) is fixedly connected to a mounting base (21), the mounting base (21) is L-shaped, the L-shaped turning surface of the mounting base (21) is fixedly installed with a second electric cylinder (22) through the wall, the telescopic end of the second electric cylinder (22) is fixedly connected to a movable frame (23), the movable frame (23) has the same structure as the fixed frame (11), and the opening directions of the movable frame (23) and the fixed frame (11) are opposite to each other, the top of the movable frame (23) is fixedly installed with a third electric cylinder (24) through the wall, the telescopic end of the third electric cylinder (24) is fixedly connected to a second pressure plate (25).

4. The welding positioning fixture for processing water tank crossbeams according to claim 3, characterized in that: The bottom surface of the movable frame (23) and the bottom surface of the second pressure plate (25) are both fitted with a second anti-slip pad (26), which is made of rubber material.

5. The welding positioning fixture for processing water tank crossbeams according to claim 3, characterized in that: Four guide rods (27) are fixedly connected to one side of the movable frame (23). One end of each of the four guide rods (27) passes through the mounting base (21), and the four guide rods (27) are arranged in a matrix.

6. The welding positioning fixture for processing water tank crossbeams according to claim 3, characterized in that: The bottoms of the first slide (6) and the second slide (15) are close to but not in contact with the top of the processing table (1), and the outer walls of the first slider (9) and the second slider (19) are close to but not in contact with the inner walls of the two movable grooves (3).

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