Fixing tool for automobile body welding

Abstract

The utility model discloses a fixing tool for welding an automobile body, which relates to the technical field of fixing tools for welding the automobile body and comprises a fixing block and a positioning block arranged at the lower end of the fixing block, a rotating mechanism is mounted in the positioning block, a groove is downwards formed in the middle of the upper end of the fixing block, and four buffers are equidistantly mounted on the periphery in the groove. Second electric telescopic rods are vertically mounted at four corners in the groove; the first electric telescopic rod is matched with the movable plate, a buffer plate can be tightly attached to the outer wall of a vehicle body through a second buffer spring, the stability of the vehicle body in the welding process is improved, the function of preventing the welding precision from being not high is achieved, the second electric telescopic rod is matched with the fixed plate, and the welding precision is improved. The height of the fixing tool can be conveniently adjusted according to different vehicle body sizes, the use universality of the fixing tool is improved, then the function that the fixing tool can fix different vehicle types is achieved, and finally the problems that the welding precision is low and the fixing tool lacks universality are solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive body welding fixture technology, and in particular to a fixing fixture for automotive body welding. Background Technology

[0002] As a pillar industry of manufacturing, the automotive industry has experienced over a century of vigorous development. In the automobile production process, the body welding process is a crucial link determining the overall quality and safety of the vehicle. According to industry statistics, the body of an ordinary sedan is welded from approximately 300-500 stamped parts, with 3,000-5,000 welding points. With the rise of lightweight vehicles and new energy vehicles, higher demands are placed on the precision, efficiency, and quality of body welding. For example, the widespread use of new materials such as aluminum alloys and high-strength steel in car bodies makes it difficult for traditional welding processes to guarantee splicing accuracy and material properties, thus requiring suitable fixed tooling.

[0003] Traditional fixed tooling often employs mechanical positioning methods, such as pin and pin hole positioning, translation block positioning, V-block positioning, and combined positioning. During the welding process, these positioning methods are prone to displacement of body parts due to thermal deformation and vibration, affecting welding accuracy and requiring a large number of body parts to be reworked. Secondly, existing fixed tooling is often designed for specific car models and lacks versatility. When car manufacturers need to switch models or develop new products, they need to redesign and manufacture tooling, which not only wastes resources but also prolongs the production cycle. Therefore, the above-mentioned technical problems need to be solved. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a fixed tooling for welding automobile bodies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fixing fixture for welding automobile bodies, comprising a fixing block and a positioning block disposed at the lower end of the fixing block, wherein a rotating mechanism is installed in the positioning block, and a groove is formed downward in the middle of the upper end of the fixing block, wherein four buffers are equidistantly installed around the groove, and a second electric telescopic rod is vertically installed at each of the four corners of the groove, wherein the output end of the second electric telescopic rod passes through the fixing block and is fixedly connected to the lower end of the buffer mechanism, and a clamping mechanism is installed on one side of the upper end of the buffer mechanism.

[0006] Preferably, the four buffer ends are all fixed to the lower end of the support plate, and the upper end of the support plate is provided with anti-slip grooves at equal intervals.

[0007] Preferably, the buffer mechanism includes a fixed plate at the output end of the second electric telescopic rod, and telescopic guide rods are vertically and equidistantly installed around the upper edge of the fixed plate. A first buffer spring is sleeved on the outer side of the telescopic guide rod, and the top ends of the telescopic guide rods are all fixed to the bottom end of the support plate.

[0008] Preferably, the clamping mechanism includes an inverted T-shaped sliding groove horizontally opened on the upper end of the support plate, a movable plate is slidably installed inside the sliding groove, and a first electric telescopic rod is installed on the support plate on one side of the movable plate, the telescopic end of the first electric telescopic rod passing through the support plate and fixed to one side of the movable plate.

[0009] Preferably, a second buffer spring is fixedly connected to the upper end of the other side of the movable plate. A second telescopic guide rod is horizontally installed in each of the second buffer springs. One end of the second telescopic guide rod is fixedly connected to the movable plate, and the other end is fixedly connected to one side of the buffer plate. The buffer plate is slidably mounted on the support plate.

[0010] Preferably, the rotating mechanism includes a servo motor installed in a circular groove in the middle of the positioning block. A worm gear is fixedly connected to the output end of the servo motor. A worm wheel is meshed on one side of the worm gear. The worm wheel is rotatably installed inside the positioning block and meshes with a driven wheel. The driven wheel is rotatably installed in the circular groove of the positioning block, and its upper end is fixedly connected to the bottom surface of the fixed block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the first electric telescopic rod and the moving plate cooperate with each other, which facilitates the second buffer spring to make the buffer plate fit tightly against the outer wall of the vehicle body, thereby improving the stability of the vehicle body welding process and thus realizing the function of preventing low welding precision. Furthermore, the second electric telescopic rod and the fixed plate cooperate with each other, which facilitates the adjustment of height according to different vehicle body sizes, improves the versatility of the fixed fixture, and thus realizes the function of fixing the fixed fixture to different vehicle models, ultimately solving the problems of low welding precision and lack of versatility of the fixed fixture. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed in this utility model;

[0015] Figure 3This is a schematic diagram of the partial overall three-dimensional structure proposed in this utility model;

[0016] Figure 4 The present utility model proposes Figure 3 Schematic diagram of the structure of part A in the middle;

[0017] Figure 5 A schematic diagram of the bottom-view cross-sectional structure proposed in this utility model. Figure 1 ;

[0018] Figure 6 A schematic diagram of the bottom-view cross-sectional structure proposed in this utility model. Figure 2 .

[0019] The numbers in the diagram are: 1. Fixed block; 2. Support plate; 3. Groove; 4. Positioning block; 5. Buffer; 6. Fixed plate; 7. First buffer spring; 8. Support plate; 9. Sliding groove; 10. Buffer plate; 11. Second buffer spring; 12. Moving plate; 13. First electric telescopic rod; 14. Servo motor; 15. Worm gear; 16. Worm wheel; 17. Driven wheel; 18. Second electric telescopic rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example: See Figure 1-6 The present invention provides a fixing fixture for welding automobile bodies, comprising a fixing block 1 and a positioning block 4 located at the lower end of the fixing block 1. A rotating mechanism is installed in the positioning block 4. A groove 3 is formed downward in the middle of the upper end of the fixing block 1. Four buffers 5 are installed equidistantly around the groove 3. A second electric telescopic rod 18 is vertically installed at each of the four corners of the groove 3. The output end of the second electric telescopic rod 18 passes through the fixing block 1 and is fixed to the lower end of the buffer mechanism. A clamping mechanism is installed on one side of the upper end of the buffer mechanism. The fixing block 1 and the positioning block 4 facilitate the assembly of the fixing fixture shell. The buffer ends of the four buffers 5 are all fixed to the lower end of the support plate 2. The upper end of the support plate 2 is provided with anti-slip grooves at equal intervals. The buffers 5 and the support plate 2 facilitate the support of the bottom of the vehicle body. The buffer mechanism includes a fixed plate 6 fixed to the output end of the second electric telescopic rod 18. Telescopic guide rods are vertically and equally spaced around the upper end of the fixed plate 6. The outer side of the telescopic guide rods is fitted with a first buffer spring 7. The top of the telescopic guide rods is fixed to the bottom end of the support plate 8. The telescopic guide rods and the first buffer spring 7 facilitate the downward buffering when the vehicle body is placed on the upper end of the support plate 8.

[0022] In this utility model, the clamping mechanism includes an inverted T-shaped sliding groove 9 horizontally formed on the upper end of the support plate 8. A movable plate 12 is slidably installed inside the sliding groove 9, and a first electric telescopic rod 13 is installed on the support plate 8 on one side of the movable plate 12. The telescopic end of the first electric telescopic rod 13 passes through the support plate 8 and is fixed to one side of the movable plate 12. The first electric telescopic rod 13 and the movable plate 12 facilitate clamping and fixing of both sides of the vehicle body. A second buffer spring 11 is fixedly connected to the upper end of the other side of the movable plate 12. A second telescopic guide rod is horizontally installed in each of the second buffer springs 11. One end of the second telescopic guide rod is fixedly connected to the movable plate 12, and the other end is fixedly connected to one side of the buffer plate 10. The buffer plate 10 is slidably mounted on the support plate 8. Through the buffer plate 10 and the second buffer spring 11, it is easy to place the buffer plate 10 to exert greater pressure on the car body, causing the car body to deform or dent. The rotating mechanism includes a servo motor 14 installed in the circular groove in the middle of the positioning block 4. The output end of the servo motor 14 is fixedly connected to a worm gear 15. A worm wheel 16 is meshed on one side of the worm gear 15. The worm wheel 16 is rotatably mounted inside the positioning block 4, and the worm wheel 16 meshes with the driven wheel 17. The driven wheel 17 is rotatably mounted in the circular groove of the positioning block 4, and the upper end of the driven wheel 17 is fixedly connected to the bottom surface of the fixed block 1. Through the worm wheel 16 and the driven wheel 17, it is easy to rotate the fixed block 1.

[0023] Working principle: When using this utility model, firstly, by activating the second electric telescopic rod 18 in the groove 3 inside the fixed block 1, the fixed plate 6 is moved upward, which facilitates the adjustment of the height according to the model of the vehicle body. Then, the vehicle body is placed on the support plate 2, and the buffer 5 prevents the bottom of the vehicle body from bumping. Then, the support plate 8 and the first buffer spring 7 facilitate the determination of the position of the wheel grooves around the vehicle body, and the first electric telescopic rod 13 causes the moving plate 12 to move horizontally in the sliding groove 9. Then, the second buffer spring 11 and the buffer plate 10 facilitate the clamping of the vehicle body to prevent dents or deformation. Then, the servo motor 14 in the positioning block 4 facilitates the rotation of the worm gear 15 through the output shaft of the servo motor 14, thereby driving the worm wheel 16 and the driven wheel 17 to rotate, so that the fixed block 1 rotates.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixing tool for automobile body welding, comprising a fixing block (1) and a positioning block (4) arranged at the lower end of the fixing block (1), characterized in that: The positioning block (4) is provided with a rotating mechanism, the middle part of the upper end of the fixed block (1) is provided with a groove (3), four buffers (5) are equidistantly arranged around the groove (3), and second electric telescopic rods (18) are vertically arranged at four corners in the groove (3), the output ends of the second electric telescopic rods (18) penetrate through the fixed block (1) and are fixed to the lower end of the buffer mechanism, and the buffer mechanism is provided with a clamping mechanism on one side of the upper end.

2. The fixing tool for welding of a vehicle body according to claim 1, characterized in that: The buffering ends of the four buffers (5) are fixed to the lower end of the supporting plate (2), and anti-skid grooves are equidistantly arranged on the upper end of the supporting plate (2).

3. The fixing tool for welding of a vehicle body according to claim 1, characterized in that: The buffer mechanism comprises a fixed plate (6) fixed to the output end of the second electric telescopic rod (18), the upper end of the fixed plate (6) is vertically and equidistantly provided with telescopic guide rods, the first buffer springs (7) are sleeved and arranged outside the telescopic guide rods, and the top ends of the telescopic guide rods are fixed to the bottom end of the supporting plate (8).

4. The fixing tool for welding of a vehicle body according to claim 3, characterized in that: The clamping mechanism comprises an inverted T-shaped sliding groove (9) horizontally arranged on the upper end of the supporting plate (8), the moving plate (12) is slidably arranged in the sliding groove (9), the first electric telescopic rod (13) is arranged on one side of the moving plate (12) and the supporting plate (8), and the telescopic end of the first electric telescopic rod (13) penetrates through the supporting plate (8) and is fixed to one side of the moving plate (12).

5. The fixture for welding a vehicle body according to claim 4, wherein: The other side of the moving plate (12) is provided with the second buffer spring (11) fixed thereon, the second telescopic guide rods are horizontally arranged in the second buffer spring (11), one end of the second telescopic guide rod is fixed to the moving plate (12), and the other end is fixed to one side of the buffer plate (10), and the buffer plate (10) is slidably arranged on the supporting plate (8).

6. The fixture for welding a vehicle body according to claim 1, wherein: The rotating mechanism comprises a servo motor (14) arranged in the middle part of the positioning block (4), the output end of the servo motor (14) is fixedly connected with a worm (15), one side of the worm (15) is engagedly arranged with a worm wheel (16), the worm wheel (16) is rotatably arranged on the inner side of the positioning block (4), the worm wheel (16) and a driven wheel (17) are engaged with each other, the driven wheel (17) is rotatably arranged in the circular groove of the positioning block (4), and the upper end of the driven wheel (17) is fixed to the bottom surface of the fixed block (1).

Images