Welding deformation prevention clamp

Abstract

The utility model relates to the technical field of clamps, and discloses a welding deformation prevention clamp which comprises a bottom plate, the top of the bottom plate is fixedly connected with a synchronous centering mechanism, the interior of the bottom plate is slidably connected with a plurality of sliding plates, and the tops of the sliding plates are fixedly connected with a synchronous rotating mechanism. A mounting supporting plate is fixedly connected to the top of the sliding plate, a clamping mounting plate is fixedly connected to the outer portion of the mounting supporting plate, and a position adjusting mechanism is fixedly connected to the outer portion of the clamping mounting plate. According to the device, the rotating plate drives the follow-up plate to rotate through the connecting shaft, the follow-up plate slides outside the limiting rod through the sliding plates, then the two sliding plates can be centered, and all parts of a weldment can be accurately kept at designed positions in the welding process through synchronous centering and a clamp; and the size deviation of the weldment is controlled within an extremely small range, and the high-precision design requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a clamping fixture for preventing welding deformation. Background Technology

[0002] A car body is made up of numerous welded parts, such as doors, frame, and floor. During the welding process, using anti-welding deformation fixtures ensures that each component maintains its correct position and shape, preventing deformation caused by welding thermal stress, guaranteeing the dimensional accuracy and overall quality of the car body, and ensuring its strength and safety.

[0003] In existing technologies, some fixtures are made of high-strength metal materials, possessing high rigidity and strength. During welding, the workpiece is tightly fixed to the fixture, utilizing the rigidity of the fixture to limit the deformation of the workpiece under the heat of welding.

[0004] However, in actual use, if the fixture cannot be synchronously centered during welding, the weldment cannot be accurately positioned in the predetermined position. The degree of offset in different parts may be different, which ultimately leads to deviation in the overall position of the weldment, failing to meet the dimensional and positional accuracy requirements of the design. In order to address the above problems, a welding deformation prevention fixture is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a welding deformation prevention fixture, which aims to improve the problem that some existing devices cannot synchronously center the fixture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A welding deformation prevention clamp includes a base plate, a synchronous centering mechanism fixedly connected to the top of the base plate, multiple sliding plates slidably connected inside the base plate, a synchronous rotation mechanism fixedly connected to the top of the sliding plates, a mounting support plate fixedly connected to the top of the sliding plates, a clamping mounting plate fixedly connected to the outside of the mounting support plate, and a position adjustment mechanism fixedly connected to the outside of the clamping mounting plate.

[0008] The synchronous centering mechanism includes a motor, a drive rod fixedly connected to the drive end of the motor, a rotating plate rotatably connected to the outside of the drive rod, connecting shafts fixedly connected to the left and right sides of the rotating plate, a follower plate rotatably connected to the outside of the connecting shafts, a sliding plate rotatably connected to the other end of the follower plate, a limit assembly provided inside the base plate, and the motor fixedly connected to the top of the base plate.

[0009] As a further description of the above technical solution:

[0010] The limiting component includes a limiting rod, the outside of which is fixedly connected to the inside of the base plate, and the inside of the mounting support plate is slidably connected to the outside of the limiting rod.

[0011] As a further description of the above technical solution:

[0012] The synchronous rotation mechanism includes a mounting plate, a drive assembly fixedly connected inside the mounting plate, a drive wheel rotatably connected inside the left mounting support plate, a belt sleeved on the outside of the drive wheel, a connecting rod rotatably connected to the top inside the mounting support plate, a driven wheel rotatably connected to the outside of the connecting rod, a mounting column fixedly connected to the other end of the driven wheel, and a spring sliding rod fixedly connected to the other end of the mounting column. A rotating disk is rotatably connected to the outside of the right mounting support plate, along with the spring sliding rod. The top of the mounting plate is fixedly connected to the outside of the mounting plate.

[0013] As a further description of the above technical solution:

[0014] The drive assembly includes a second motor, the drive end of which is fixedly connected to a connecting rod, and the exterior of the second motor is fixedly connected to the interior of the mounting plate.

[0015] As a further description of the above technical solution:

[0016] The position adjustment mechanism includes a mounting frame, a connecting shaft is fixedly connected inside the mounting frame, a rotating clamping plate is rotatably connected to the outside of the connecting shaft, a clamping rod is fixedly connected to the other end of the rotating clamping plate, clamping plates are slidably connected to the left and right sides of the clamping mounting plate, and the mounting frame is fixedly connected to the four corners of the clamping mounting plate.

[0017] As a further description of the above technical solution:

[0018] The clamp plate has multiple slots on its outside, and the outside of the clamp rod engages with the inside of the slots.

[0019] As a further description of the above technical solution:

[0020] The outer side of the sliding plate is slidably connected to the inside of the base plate, and the outer side of the limiting rod is slidably connected to the inside of the sliding plate;

[0021] As a further description of the above technical solution:

[0022] The external rotatable connection of the driving wheel is to the inside of the mounting support plate, and the external rotatable connection of the driven wheel is to the inside of the mounting support plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by starting motor one, the motor one starts the drive rod to rotate. When the drive rod rotates, it drives the rotating plate to rotate. The rotating plate drives the follower plate to rotate through the connecting shaft. The follower plate slides outside the limit rod through the sliding plate, thereby enabling the two sliding plates to be aligned. Through synchronous centering, the fixture can accurately keep each part of the weldment in the designed position during the welding process, ensuring that the dimensional deviation of the weldment is controlled within a very small range and meeting the high-precision design requirements.

[0025] 2. In this utility model, by starting the second motor, the second motor drives the driving wheel to rotate via the connecting rod. The driving wheel drives the driven wheel to rotate via the belt, which in turn drives the mounting column to rotate. The mounting column drives the clamping mounting plate to rotate via the elastic sliding rod. When the two clamping mounting plates are in contact, the rotating disk can rotate synchronously. The synchronous rotation of the clamping plates can ensure that all parts of the weldment receive welding heat evenly during the welding process, avoiding local overheating or undercooling. This results in a more uniform and consistent weld structure and properties, reduces welding stress and deformation, and improves the strength and toughness of the welded joint.

[0026] 3. In this utility model, the rotating clamping plate can rotate inside the connecting shaft, thereby causing the clamping rod to separate from the slot on the outside of the clamping plate. This allows for adjustment of the clamping plate. When adjusted to the appropriate position, rotating the clamping plate allows it to rotate inside the connecting shaft, causing the clamping rod to engage with the slot on the outside of the clamping plate. By adjusting the position of the clamping plate, the parts to be welded on the workpiece can be precisely aligned, ensuring a uniform weld gap. This facilitates the formation of the molten pool and the filling of the weld during welding, reducing the probability of defects such as incomplete penetration and lack of fusion, and improving the integrity and strength of the weld. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a welding deformation prevention fixture proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the limiting rod of the anti-welding deformation clamp proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the installation support plate of the anti-welding deformation clamp proposed in this utility model;

[0030] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0031] Figure 5This is a schematic diagram of the mounting column of a welding deformation prevention clamp proposed in this utility model;

[0032] Figure 6 This is a schematic diagram of the follower plate of a welding deformation prevention fixture proposed in this utility model.

[0033] Legend:

[0034] 1. Base plate; 2. Motor 1; 3. Drive rod; 4. Rotating plate; 5. Connecting shaft; 6. Follower plate; 7. Sliding plate; 8. Limiting rod; 9. Mounting support plate; 10. Mounting plate 1; 11. Motor 2; 12. Connecting rod; 13. Drive wheel; 14. Belt; 15. Connecting rod; 16. Driven wheel; 17. Mounting column; 18. Elastic sliding rod; 19. Clamping mounting plate; 20. Mounting frame; 21. Connecting shaft; 22. Rotating clamping plate; 23. Clamping rod; 24. Clamping plate; 25. Clamping slot; 26. Rotating disk. Detailed Implementation

[0035] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0036] Reference Figure 1 , Figure 3 and Figure 6This utility model provides an embodiment of a welding deformation prevention fixture, comprising a base plate 1. The base plate 1 provides a solid support foundation for the entire fixture, reducing shaking and displacement caused by external forces during welding. A synchronous centering mechanism is fixedly connected to the top of the base plate 1. Multiple sliding plates 7 are slidably connected inside the base plate 1. The shape and size of the sliding plates 7 are precisely designed according to the internal grooves of the base plate 1. The surface is anodized to improve wear resistance and corrosion resistance. The top of the sliding plates 7 is processed to provide a flat mounting surface for the installation of the synchronous rotation mechanism. The synchronous rotation mechanism is fixedly connected to the top of the sliding plates 7. The step rotation mechanism includes a mounting plate 10. The interior of the mounting plate 10 is carefully designed to provide suitable space and a fixed structure for the installation of the drive assembly. The surface of the mounting plate 10 is polished to ensure its flatness and smoothness, so as to ensure the installation accuracy of the drive assembly. The drive assembly is fixedly connected inside the mounting plate 10. The drive assembly includes a motor 11. The motor 11 is the core power source of the drive assembly. It adopts a high-performance servo motor. The servo motor has the advantages of high control accuracy, fast response speed and stable torque. It can accurately control the rotation speed of the connecting rod 12. The drive end of the motor 11 is fixedly connected to the connecting rod 12.

[0037] The main function of the connecting rod 12 is to transmit the rotational power of the second motor 11 to the driving wheel 13, causing the driving wheel 13 to rotate. The second motor 11 is externally fixedly connected to the inside of the mounting plate 10. The driving wheel 13 is rotatably connected inside the left mounting support plate 9. The driving wheel 13 can achieve efficient power transmission. A belt 14 is sleeved on the outside of the driving wheel 13. The surface of the belt 14 is specially treated to increase the friction between the belt 14 and the driving wheel 13 and the driven wheel 16, ensuring that slippage does not occur during transmission. The top of the inside of the mounting support plate 9 is rotatably connected to the connecting rod 15. The main function of the connecting rod 15 is to provide rotational support for the driven wheel 16 and transmit the rotation of the driven wheel 16 to the mounting column 17. A driven wheel 16 is rotatably connected to the outside of the connecting rod 15. The driven wheel 16 has the same hardness and wear resistance as the driving wheel 13. A mounting post 17 is fixedly connected to the other end of the driven wheel 16. A spring sliding rod 18 is fixedly connected to the other end of the mounting post 17. The spring sliding rod 18 consists of a rod body and an internal spring. The rod body has good corrosion resistance and strength, and the spring has good elasticity and stability. A rotating disk 26 is rotatably connected to the outside of the right mounting support plate 9. The rotating disk 26 is rotatably connected to the outside of the right mounting support plate 9 through a bearing. The selection and installation of the bearing ensures that the rotating disk 26 can rotate flexibly and remain stable during rotation. The outside of the mounting plate 10 is fixedly connected to the top of the sliding plate 7. Example

[0038] Reference Figures 3 to 4A mounting support plate 9 is fixedly connected to the top of the sliding plate 7. The shape and size of the mounting support plate 9 are carefully designed to meet the needs of mounting and clamping mounting plate 19 and other related components. The structural design of the mounting support plate 9 balances strength and lightweight. The external fixed connection of the mounting support plate 9 is the clamping mounting plate 19, which is made of cold-rolled steel plate. Cold-rolled steel plate has high strength and good flatness. During the manufacturing process, it undergoes multiple stamping and bending processes to ensure that its shape accurately meets the design requirements. The external fixed connection of the clamping mounting plate 19... The device is connected to an adjustment mechanism, which includes a mounting bracket 20. The mounting bracket 20 is designed as a frame structure with a precisely calculated internal space to accommodate components such as the connecting shaft 21. Its external dimensions and mounting holes are carefully designed to perfectly fit the four external corners of the clamping mounting plate 19. It is firmly fixed to the four external corners of the clamping mounting plate 19 by bolt connection. The connecting shaft 21 is fixedly connected inside the mounting bracket 20. The connecting shaft 21 is manufactured with extremely high precision and has a very low surface roughness. These high-precision manufacturing processes are essential.

[0039] To ensure the smoothness and stability of the connecting shaft 21 during rotation, a rotating clamping plate 22 is externally connected to the connecting shaft 21. The rotating clamping plate 22 is made of aluminum alloy, which reduces its weight while maintaining strength, making rotation more flexible. Its shape is designed with a connecting hole at one end for connection to the connecting shaft 21, and a clamping rod 23 is fixedly connected to the other end of the rotating clamping plate 22. The outer diameter of the clamping rod 23 is precisely matched to the inner diameter of the clamping groove 25, ensuring that the clamping rod 23 can be tightly engaged in the clamping groove 25 without loosening or shaking. This clamping plate 19... Clamping plates 24 are slidably connected to both the left and right sides of the exterior. The surface of the clamping plates 24 is phosphated to increase the surface friction and make the workpiece clamping more secure. At the same time, the phosphated treatment can also play a certain role in rust prevention. The mounting bracket 20 is fixedly connected to the four outer corners of the clamping mounting plate 19. Multiple slots 25 are opened on the outside of the clamping plates 24. These slots 25 are evenly distributed on the surface of the clamping plates 24. The slots 25 cooperate with the clamping rods 23. By the clamping rods 23 engaging with the slots 25 at different positions, the position of the clamping plates 24 can be adjusted. The outside of the clamping rods 23 engages with the inside of the slots 25. Example

[0040] Reference Figures 1 to 2The synchronous centering mechanism includes motor 2, which serves as the core power source, providing power for the mechanism's operation. Its power and torque are precisely matched to the overall load and motion requirements of the fixture, ensuring efficient and stable driving of subsequent components and achieving precise centering of the workpiece. A drive rod 3 is fixedly connected to the drive end of motor 2. The surface of drive rod 3 undergoes quenching and tempering treatment, significantly improving surface hardness and wear resistance, and extending its service life. A rotating plate 4 is rotatably connected to the outside of drive rod 3. The rotating plate 4 is carefully designed with a symmetrical structure, and its left and right sides are firmly fixed with connecting shafts 5 using high-strength bolts. The surface of rotating plate 4 undergoes anodizing treatment, which not only improves surface hardness and wear resistance, but also connects to connecting shafts 5 on both the left and right sides of rotating plate 4. The two ends of connecting shafts 5 are rotatably connected to rotating plate 4 and follower plate 6 respectively through high-precision bearings.

[0041] The selection of bearings ensures the stability and flexibility of the connecting shaft 5 during motion transmission. The connecting shaft 5 is externally rotatably connected to a follower plate 6, and the other end of the follower plate 6 is rotatably connected to a sliding plate 7. The sliding plate 7 has a through hole that matches the limiting rod 8. The limiting rod 8 is externally slidably connected in the through hole to ensure the stability of the sliding plate 7 during sliding and prevent it from shifting. The base plate 1 is internally equipped with a limiting component, which includes a limiting rod 8. The position of the limiting rod 8 is precisely calibrated to ensure that its parallelism error with the internal slide groove of the base plate 1 is controlled within a very small range, so as to ensure the stability of the sliding plate 7 and the mounting support plate 9 during sliding. The limiting rod 8 is externally fixedly connected to the inside of the base plate 1, and the mounting support plate 9 is internally slidably connected to the outside of the limiting rod 8. The motor 2 is externally fixedly connected to the top of the base plate 1.

[0042] Reference Figures 3 to 5 The sliding plate 7 is externally slidably connected to the inside of the base plate 1, the limiting rod 8 is externally slidably connected to the inside of the sliding plate 7, the driving wheel 13 is externally rotatably connected to the inside of the mounting support plate 9, and the driven wheel 16 is externally rotatably connected to the inside of the mounting support plate 9. The torque transmitted by the connecting rod 12 is used to rotate the wheel 14, thereby driving the driven wheel 16 and other components and providing power for the operation of the synchronous rotation mechanism.

[0043] Working principle: When the two sliding plates 7 are aligned, the motor 2 is started. Under the action of the motor 2, the drive rod 3 is driven to rotate. When the drive rod 3 rotates, it drives the rotating plate 4 to rotate. Under the rotation of the rotating plate 4, the rotating plate 4 drives the follower plate 6 to rotate through the connecting shaft 5. Under the rotation of the follower plate 6, the follower plate 6 slides outside the limiting rod 8 through the sliding plate 7, thereby enabling the two sliding plates 7 to be aligned.

[0044] When the clamping mounting plate 19 is rotated, the second motor 11 is started. Driven by the second motor 11, the second motor 11 drives the driving wheel 13 to rotate via the connecting rod 12. The rotation of the driving wheel 13 drives the driven wheel 16 to rotate via the belt 14. The driven wheel 16 then drives the mounting column 17 to rotate. The rotation of the mounting column 17 drives the clamping mounting plate 19 to rotate via the elastic sliding rod 18. This allows the rotating disk 26 to rotate synchronously when the two clamping mounting plates 19 are in contact.

[0045] When adjusting the position of clamping plate 24, rotating clamping plate 22 is used. Under the action of rotating clamping plate 22, it can rotate inside the connecting shaft 21. Then, rotating clamping plate 22 can drive clamping rod 23 to separate from the clamping groove 25 outside clamping plate 24, thereby realizing the adjustment of clamping plate 24. When adjusted to a suitable position, rotating clamping plate 22 is used again. Under the action of rotating clamping plate 22, it can rotate inside the connecting shaft 21, thereby driving clamping rod 23 to engage with the clamping groove 25 outside clamping plate 24.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding deformation resistant fixture, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a synchronous centering mechanism. Multiple sliding plates (7) are slidably connected inside the base plate (1). The top of the sliding plates (7) is fixedly connected to a synchronous rotation mechanism. The top of the sliding plates (7) is fixedly connected to a mounting support plate (9). The outside of the mounting support plate (9) is fixedly connected to a clamping mounting plate (19). The outside of the clamping mounting plate (19) is fixedly connected to an adjusting position mechanism. The synchronous centering mechanism includes a motor (2), a drive rod (3) is fixedly connected to the drive end of the motor (2), a rotating plate (4) is rotatably connected to the outside of the drive rod (3), a connecting shaft (5) is fixedly connected to the left and right sides of the outside of the rotating plate (4), a follower plate (6) is rotatably connected to the outside of the connecting shaft (5), and a sliding plate (7) is rotatably connected to the other end of the follower plate (6). A limit assembly is provided inside the base plate (1), and the motor (2) is fixedly connected to the top of the base plate (1).

2. The anti-welding deformation fixture according to claim 1, characterized in that: The limiting component includes a limiting rod (8), the limiting rod (8) is externally fixedly connected to the inside of the base plate (1), and the mounting support plate (9) is internally slidably connected to the outside of the limiting rod (8).

3. The anti-welding deformation fixture according to claim 1, characterized in that: The synchronous rotation mechanism includes a mounting plate (10), a drive assembly is fixedly connected inside the mounting plate (10), a drive wheel (13) is rotatably connected inside the mounting support plate (9) on the left, a belt (14) is sleeved on the outside of the drive wheel (13), a connecting rod (15) is rotatably connected to the top inside the mounting support plate (9), a driven wheel (16) is rotatably connected to the outside of the connecting rod (15), a mounting column (17) is fixedly connected to the other end of the driven wheel (16), a spring sliding rod (18) is fixedly connected to the other end of the mounting column (17), a rotating disk (26) is rotatably connected to the outside of the mounting support plate (9) on the right, and the spring sliding rod (18); the outside of the mounting plate (10) is fixedly connected to the top of the sliding plate (7).

4. The anti-welding deformation fixture according to claim 3, characterized in that: The drive assembly includes a second motor (11), the drive end of which is fixedly connected to a connecting rod (12), and the exterior of the second motor (11) is fixedly connected to the interior of the first mounting plate (10).

5. The anti-welding deformation fixture according to claim 1, characterized in that: The position adjustment mechanism includes a mounting frame (20), a connecting shaft (21) is fixedly connected inside the mounting frame (20), a rotating clamping plate (22) is rotatably connected to the outside of the connecting shaft (21), a clamping rod (23) is fixedly connected to the other end of the rotating clamping plate (22), clamping plates (24) are slidably connected to the left and right sides of the clamping mounting plate (19), and the outside of the mounting frame (20) is fixedly connected to the four corners of the clamping mounting plate (19).

6. The anti-welding deformation fixture according to claim 5, characterized in that: The clamp (24) has multiple slots (25) on its outside, and the outside of the clamp (23) engages with the inside of the slots (25).

7. The anti-welding deformation fixture according to claim 2, characterized in that: The sliding plate (7) is externally slidably connected to the inside of the base plate (1), and the limiting rod (8) is externally slidably connected to the inside of the sliding plate (7).

8. The anti-welding deformation fixture according to claim 3, characterized in that: The external rotatable connection of the driving wheel (13) is to the inside of the mounting support plate (9), and the external rotatable connection of the driven wheel (16) is to the inside of the mounting support plate (9).

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