A body welding device and positioning structure

Abstract

The utility model relates to welding device technical field discloses a kind of vehicle body welding device and positioning structure, including base, the base top is fixedly connected with support platform, the support platform one side surface is attached with workbench, the base surface is provided with cylinder, the cylinder one end is provided with connecting shaft, the connecting shaft both sides are rotatably connected with transmission arm, two the transmission arm top are all fixedly connected with sector gear, two the sector gear surface are all engaged with rotatory gear, two the rotatory gear are all fixedly connected between workbench. In the utility model, connecting shaft can drive transmission arm, sector gear and rotatory gear to rotate by cylinder drive, to change the included angle between base and support platform, realize the angle adjustment of workbench, to turn the vehicle body component fixed on the surface of workbench to horizontal, inclined or vertical state, facilitate operator to carry out flat welding, vertical welding and multiple postures operation for complex weld.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a vehicle body welding device and positioning structure. Background Technology

[0002] The body welding unit is a specialized piece of equipment used in automobile manufacturing to connect metal parts of the car body. It is one of the core pieces of equipment in car body manufacturing. Its main function is to permanently connect stamped parts, profiles and other components of the car body through welding processes to form a car body frame or assembly with sufficient strength, rigidity and sealing. At the same time, it ensures that the welding accuracy meets the dimensional tolerance requirements of the car body, laying the foundation for subsequent painting, final assembly and other processes.

[0003] Existing body welding equipment is usually equipped with a workbench. The workbench of such equipment is mostly fixed. When facing complex welds, manual operation is required to change the posture of body parts, which can easily affect the quality and efficiency of the welding operation. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a vehicle body welding device and positioning structure, which aims to improve the situation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a car body welding device, including a base, a support platform fixedly connected to the top of the base, a worktable attached to one side surface of the support platform, a cylinder provided on the surface of the base, a connecting shaft provided at one end of the cylinder, transmission arms rotatably connected to both sides of the connecting shaft, sector gears fixedly connected to the top ends of the two transmission arms, rotating gears meshing with the surfaces of the two sector gears, and both rotating gears fixedly connected to the worktable; The above technical solution transmits power to the transmission arms on both sides via a connecting shaft, which in turn drives the top sector gear to rotate. The sector gear meshes with the rotating gear, which in turn drives the worktable to change its posture, thereby adjusting the angle of the worktable.

[0006] Preferably, the vehicle body welding device further includes a support base, which is fixedly connected to the base. A rotating arm is rotatably connected to the top of the support base, and a first connecting arm and a second connecting arm are rotatably connected to one end of the rotating arm. The first connecting arm and the second connecting arm are rotatably connected to the bottom of the worktable, respectively. The above technical solution provides a fulcrum for the rotating arm through the support base, allowing the rotating arm to rotate freely around the connection point at the top of the support base. By setting the rotating arm inside the two connecting arms, when the worktable and the support table are set parallel, the rotating arm can be stored between the connecting arms, avoiding any impact on the angle of the worktable.

[0007] Preferably, a connecting frame is provided on the top of the base, and the inner wall of the connecting frame is rotatably connected to the cylinder.

[0008] Preferably, a fixing bolt is fitted to the inner wall of the rotating arm, a rotating disk is fixedly connected to the outer surface of the fixing bolt, and a limit nut is threadedly connected to the inner side of the fixing bolt.

[0009] Preferably, both the base and the support platform have receiving grooves on their surfaces, and both sector gears are rotatably connected to the inner wall of the support platform.

[0010] Preferably, a piston is slidably connected to the inner wall of the cylinder, and a connecting member is fixedly connected to the top of the piston, with the connecting member rotatably connected to the connecting shaft.

[0011] Preferably, a bearing hinge is installed on one side of the support platform, and the bearing hinge is fixedly connected to the worktable.

[0012] A vehicle body welding positioning structure is set on a workbench, including a transverse slide rail. Each transverse slide rail has a connecting seat slidably connected to its inner wall. A positioning pin block is engaged with the surface of the connecting seat block. A threaded cylinder is threadedly connected to the inner wall of the positioning pin block. A positioning pin is attached to the inner wall of the threaded cylinder block. Fixing members are fixedly connected to both sides of the positioning pin block. Three longitudinal slide rails are evenly arranged on the surface of the workbench along the direction perpendicular to the transverse slide rail.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the cylinder drives the connecting shaft to rotate the transmission arm, sector gear and rotating gear, thereby changing the angle between the base and the support platform, realizing the angle adjustment of the worktable. This allows the body parts fixed on the worktable surface to be flipped to a horizontal, tilted or vertical state, making it easier for operators to perform flat welding, vertical welding and other multi-position operations on complex welds, and reducing welding blind spots caused by the fixed posture of the body parts.

[0014] 2. In this utility model, by installing longitudinal and transverse slide rails on the workbench surface, the connecting seat can drive the positioning pin block to move. The positioning pin block, which has moved to the target position, is fixed by a fixing component. The extension length of the positioning pin can be adjusted by rotating the threaded cylinder inside the positioning pin block. The positioning pin is inserted into the pre-set process hole on the surface of the car body part, thereby achieving more accurate positioning of the car body part. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a vehicle body welding device and positioning structure proposed in this utility model. Figure 2 This is an exploded view of the support platform for a vehicle body welding device and positioning structure proposed in this utility model. Figure 3 This is an exploded view of the positioning pin block of a vehicle body welding device and positioning structure proposed in this utility model; Figure 4 This is a schematic diagram of the base rotation of a vehicle body welding device and positioning structure proposed in this utility model.

[0016] Legend: 1. Base; 2. Cylinder; 3. Support platform; 4. Support seat; 5. Worktable; 6. Connecting shaft; 7. Sector gear; 8. Rotating gear; 9. Transmission arm; 10. Longitudinal slide rail; 11. Transverse slide rail; 12. Threaded cylinder; 13. Connecting seat; 14. Positioning pin block; 15. Fixing component; 16. Positioning pin; 17. Rotating disk; 18. Fixing bolt; 19. Rotating arm; 20. First connecting arm; 21. Second connecting arm. Detailed Implementation

[0017] 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.

[0018] Example 1: Reference Figures 1-2 An embodiment of this utility model is provided: a car body welding device and positioning structure, including a base 1, a support platform 3 fixedly connected to the top of the base 1, a worktable 5 attached to one side surface of the support platform 3, a cylinder 2 provided on the surface of the base 1, a connecting shaft 6 provided at one end of the cylinder 2, transmission arms 9 rotatably connected to both sides of the connecting shaft 6, a sector gear 7 fixedly connected to the top of each of the two transmission arms 9, a rotating gear 8 meshing with the surfaces of each of the two sector gears 7, and both rotating gears 8 fixedly connected to the worktable 5. Specifically, the device uses cylinder 2 to adjust the posture of the worktable 5. When cylinder 2 is started, it causes the connecting shaft 6 to move. Since the connecting shaft 6 is connected to the two sides of the transmission arm 9 and the transmission arm 9 is fixedly connected to the sector gear 7, the transmission arm 9 drives the sector gear 7 to rotate, and then drives the rotating gear 8 to rotate together through gear meshing. This causes the worktable 5, which is fixed to the rotating gear 8, to rotate, thereby changing the angle between the worktable 5 and the support platform 3. This allows the body parts placed on the worktable 5 to obtain different spatial postures, making it easier for operators to perform welding operations on different parts of the parts and enhancing the device's adaptability to diverse welding needs.

[0019] Reference Figure 1The base 1 is provided with a connecting frame at the top, and the inner wall of the connecting frame is rotatably connected to the cylinder 2; Specifically, when cylinder 2 starts driving the connecting shaft 6 to move, cylinder 2 itself can adaptively adjust the tilt angle through rotational connection with the connecting frame, thereby avoiding mechanical stress on the connecting shaft 6 and the transmission arm 9 caused by displacement difference, which would affect power transmission.

[0020] Reference Figures 1-2 Both the base 1 and the support platform 3 have receiving grooves on their surfaces, and both sector gears 7 are rotatably connected to the inner wall of the support platform 3. Specifically, by setting up a receiving groove, a rotation space is provided for the sector gear 7 and the rotating gear 8. The sector gear 7 is rotatably connected to the inner wall of the support platform 3, providing a stable rotation axis for the sector gear 7, so that the sector gear 7 can rotate around a fixed axis while maintaining meshing with the rotating gear 8.

[0021] Reference Figure 2 A piston is slidably connected to the inner wall of cylinder 2, and a connecting piece is fixedly connected to the top of the piston. The connecting piece is rotatably connected to the connecting shaft 6. Specifically, by the piston reciprocating linearly along the inner wall of cylinder 2, the connecting parts and connecting shaft 6 can be displaced together. Through the combined action of transmission arm 9 and connecting shaft 6, the linear motion of the piston inside cylinder 2 can be converted into the rotational motion of sector gear 7.

[0022] Reference Figures 1-2 A bearing hinge is installed on one side of the support platform 3, and the bearing hinge is fixedly connected to the worktable 5. Specifically, the bearing hinge is fixed to the worktable 5, allowing the worktable 5 to rotate around the bearing hinge as a base point. The bearing inside the bearing hinge is fixedly connected to the rotating gear 8, which can transmit the rotational motion of the rotating gear 8 to the bearing hinge, thereby driving the worktable 5 to move synchronously.

[0023] Reference Figures 2-3 A vehicle body welding positioning structure is set on a workbench 5, including a transverse slide rail 11. The inner wall of the transverse slide rail 11 is slidably connected to a connecting seat 13. The surface of the connecting seat 13 is engaged with a positioning pin 14. The inner wall of the positioning pin 14 is threadedly connected to a threaded cylinder 12. The inner wall of the threaded cylinder 12 is fitted with a positioning pin 16. Fixing parts 15 are fixedly connected to both sides of the positioning pin 14. Three longitudinal slide rails 10 are evenly arranged on the surface of the workbench 5 along the direction perpendicular to the transverse slide rail 11. Specifically, the workbench 5 has two horizontal slide rails 11 evenly arranged on its surface. Each horizontal slide rail 11 has a connecting seat 13 installed on its inner wall. Three vertical slide rails 10 are evenly arranged along the direction perpendicular to the horizontal slide rails 11. The length of the vertical slide rail 10 in the middle is slightly shorter than that of the vertical slide rails 10 on both sides. The vertical slide rail 10 in the middle has a connecting seat 13 installed inside, and the vertical slide rails 10 on both sides have three connecting seats 13 installed inside. The two horizontal slide rails 11 are spaced apart at both ends of the vertical slide rail 10 in the middle, and the vertical slide rails 10 on both sides are spaced apart on the outside of the two horizontal slide rails 11. The horizontal slide rail 11 and the vertical slide rail 10 form an interleaved adjustment path on the surface of the worktable 5. The threaded cylinder 12 is threadedly connected to the positioning pin block 14, so that the threaded cylinder 12 can be screwed in and out along the inner wall of the positioning pin block 14, thereby driving the positioning pin 16 to adjust the extension length along the axial direction. The fixing part 15 can fix the positioning pin block 14 relative to the surface of the worktable 5 after the position is determined. The position of the positioning pin block 14 can be changed by sliding the connecting seat 13 in the slide rail, which can meet the position distribution of process holes on different body parts. In addition, the fastener 15 can be fixed by tightening it with bolts to the worktable 5, or it can be fixed by adsorbing the worktable 5 with a magnetic material. No specific limitation is made here.

[0024] Example 2: Reference Figure 4 The body welding device also includes a support base 4, which is fixedly connected to the base 1. A rotating arm 19 is rotatably connected to the top of the support base 4. A first connecting arm 20 and a second connecting arm 21 are rotatably connected to one end of the rotating arm 19. The first connecting arm 20 and the second connecting arm 21 are rotatably connected to the bottom of the worktable 5 respectively. Specifically, when the worktable 5 is adjusted in posture under the drive of the cylinder 2, the rotating arm 19 and the connecting arm can rotate synchronously with the worktable 5. The rotating arm 19 rotates around the top of the support base 4, while the first connecting arm 20 and the second connecting arm 21 change their angles with the displacement of the bottom of the worktable 5. The rotating arm 19 and the connecting arm can provide auxiliary support for the worktable 5 and distribute the weight borne by the worktable 5.

[0025] Reference Figure 4 The inner wall of the rotating arm 19 is fitted with a fixing bolt 18, and the outer surface of the fixing bolt 18 is fixedly connected to the rotating disk 17. The inner side of the fixing bolt 18 is threaded with a limit nut. Specifically, by rotating the rotating disk 17, the fixing bolt 18 is rotated and displaced inside the limiting nut, thereby clamping the connection of the rotating arm 19 and the connecting arm. The friction force is used to limit the relative rotation of the rotating arm 19 and the connecting arm, so that the two are kept in a fixed position, and thus fixed after the worktable 5 is rotated to the expected angle.

[0026] Working principle: The workbench 5 is fixed to the support platform 3 by a hinge. The cylinder 2 drives the connecting shaft 6 to rotate the transmission arm 9, sector gear 7 and rotating gear 8, thereby changing the angle between the base 1 and the support platform 3. This allows for angle adjustment of the workbench 5 within the range of 0-180°, enabling the body parts fixed on the surface of the workbench 5 to be flipped to a horizontal, tilted or vertical position. This facilitates multi-position operations such as flat welding and vertical welding of complex welds by the operator, reducing welding blind spots caused by the fixed posture of the body parts. By installing longitudinal slide rail 10 and transverse slide rail 11 on the surface of workbench 5, the connecting seat 13 can drive the positioning pin block 14 to move. The positioning pin block 14, which has moved to the target position, is fixed by the fixing member 15. The extension length of the positioning pin 16 can be adjusted by rotating the threaded cylinder 12 inside the positioning pin block 14. The positioning pin 16 is inserted into the pre-set process hole on the surface of the body part, thus achieving accurate positioning of the body part.

[0027] 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 vehicle body welding device, comprising a base (1), characterized in that: The base (1) is fixedly connected to a support platform (3) on its top. A workbench (5) is attached to one side of the support platform (3). A cylinder (2) is provided on the surface of the base (1). A connecting shaft (6) is provided at one end of the cylinder (2). Transmission arms (9) are rotatably connected to both sides of the connecting shaft (6). A sector gear (7) is fixedly connected to the top of each of the two transmission arms (9). A rotating gear (8) is meshed on the surface of each of the two sector gears (7). Both rotating gears (8) are fixedly connected to the workbench (5).

2. The vehicle body welding apparatus according to claim 1, characterized in that: The vehicle body welding device also includes a support base (4), which is fixedly connected to the base (1). A rotating arm (19) is rotatably connected to the top of the support base (4). A first connecting arm (20) and a second connecting arm (21) are rotatably connected to one end of the rotating arm (19). The first connecting arm (20) and the second connecting arm (21) are rotatably connected to the bottom of the worktable (5) respectively.

3. The vehicle body welding apparatus according to claim 1, characterized in that: The base (1) is provided with a connecting frame on top, and the inner wall of the connecting frame is rotatably connected to the cylinder (2).

4. The vehicle body welding apparatus according to claim 2, characterized in that: The inner wall of the rotating arm (19) is fitted with a fixing bolt (18), and a rotating disk (17) is fixedly connected to the outer surface of the fixing bolt (18). A limit nut is threadedly connected to the inner side of the fixing bolt (18).

5. The vehicle body welding apparatus according to claim 1, characterized in that: The base (1) and the support platform (3) are both provided with receiving grooves, and the two sector gears (7) are rotatably connected to the inner wall of the support platform (3).

6. The vehicle body welding apparatus according to claim 2, characterized in that: A piston is slidably connected to the inner wall of the cylinder (2), and a connecting piece is fixedly connected to the top of the piston. The connecting piece is rotatably connected to the connecting shaft (6).

7. The vehicle body welding apparatus according to claim 1, characterized in that: A bearing hinge is installed on one side of the support platform (3), and the bearing hinge is fixedly connected to the worktable (5).

8. A vehicle body welding positioning structure, disposed on a workbench (5), characterized in that: The system includes a transverse slide rail (11), with a connecting seat (13) slidably connected to the inner wall of the transverse slide rail (11). A positioning pin block (14) is engaged with the surface of the connecting seat (13). A threaded cylinder (12) is threadedly connected to the inner wall of the positioning pin block (14). A positioning pin (16) is attached to the inner wall of the threaded cylinder (12). Fixing members (15) are fixedly connected to both sides of the positioning pin block (14). Three longitudinal slide rails (10) are evenly arranged on the surface of the worktable (5) along the direction perpendicular to the transverse slide rail (11).

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