Frame assembly welding clamp of electric vehicle

Abstract

The utility model discloses a frame assembly welding fixture of an electric vehicle, which comprises a fixture seat, and a rotary fixture plate which is used for rotating direction, adjusting angle and welding after clamping a rear frame assembly of the electric vehicle is rotatably arranged at the end part of the fixture seat; an annular guide support block for keeping the welding of the rotating angle of the rotating clamp disc stable is arranged at the bottom of the rotating clamp disc, and under the combined use of the clamp seat, the rotating clamp disc, the annular guide support block, the annular guide seat and the servo motor, after an electric vehicle frame assembly is clamped and pressed through the welding clamp, the welding angle of the electric vehicle frame assembly is kept stable. The rotating clamp plates can be driven by the servo motor to sequentially weld according to welding positions, and the rotating direction of the electric vehicle frame assembly is adjusted, so that the direction of the electric vehicle frame assembly is adjusted to the direction suitable for welding for welding. And therefore, the electric vehicle frame assembly can be sequentially rotated in the direction to complete welding work at a time, and the welding progress of the frame is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle frame welding fixture technology, specifically relating to a vehicle frame assembly welding fixture for electric vehicles. Background Technology

[0002] The electric vehicle frame is the backbone of the vehicle and the base for subsequent assembly components. Therefore, the assembly and welding of the electric vehicle frame itself is a crucial part of the electric vehicle production process. Using welding fixtures during assembly and welding, along with a well-designed welding process and sequence, can ensure the precise relative positions of each part, effectively preventing and reducing welding deformation. The electric vehicle frame has many components, including the head tube assembly, left and right side tube assemblies, pedal assembly, and tail assembly. Especially for the tail assembly, when mass-produced in the manufacturing workshop, the use of fixtures ensures the workpiece is in the optimal welding position, making the welding position stable and reliable, ensuring consistent welding quality from the welder, good weld formation, significantly reducing process defects, increasing welding speed, reducing dimensional deviations, and ensuring product interchangeability. In contrast, welding without fixtures typically involves spot welding for pre-fixation, checking for correct positioning and accuracy before continuous welding begins. This welding method is inefficient, time-consuming, and labor-intensive.

[0003] Therefore, a welding fixture for the rear frame of an electric vehicle, with announcement number "CN206200424U", includes a welding platform, a clamping device, a limiting device, and a workpiece pad. The welding platform is a flat panel. The clamping device and the limiting device are installed and fixed on the welding platform. The clamping device includes a lifting cylinder, a pressure block, and a pad. The pressure block is connected to the output end of the lifting cylinder and moves up and down with the output shaft of the lifting cylinder to clamp and release the workpiece to be welded on the pad. The limiting device includes a cylinder and a limiting block horizontally installed on the welding platform. The limiting block is connected to the output end of the cylinder and feeds horizontally with the output shaft of the cylinder to limit and position the workpiece to be welded. This welding fixture positioning device is simple to operate, has high production efficiency, good adjustability, high processing accuracy, and replaceable molds. It is suitable for welding various types of plates and frames. This device can automatically complete the clamping and positioning of plates and frames, reducing the intensity of manual labor.

[0004] However, for the aforementioned electric vehicle rear frame welding fixture, although the welding platform is a flat panel; a clamping device and a limiting device are installed and fixed on the welding platform; the clamping device includes a lifting cylinder, a pressure block, and a pad block, with the pressure block connected to the output end of the lifting cylinder and the pad block located below the pressure block, the following obvious defects still exist during use: the aforementioned welding platform is fixed on the welding table, and the orientation cannot be adjusted according to the actual position of the welding machine during the welding process of the electric vehicle frame, thus making it impossible to quickly adjust the welding position of the electric vehicle frame, thereby preventing the simultaneous welding of multiple welding positions on the frame and affecting the welding progress of the frame. Utility Model Content

[0005] The purpose of this utility model is to provide a welding fixture for the frame assembly of an electric vehicle to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for an electric vehicle frame assembly, comprising:

[0007] The clamping base has a rotating clamping disk at its end for clamping the electric vehicle rear frame assembly, then rotating it in direction, adjusting its angle, and welding it. The bottom of the rotating clamping disk has an annular guide block to keep the rotation angle of the rotating clamping disk stable during welding. The annular guide block has an annular guide seat on its corresponding bottom side.

[0008] A pipe fitting positioning bracket A is installed on one side of the end of a rotating clamping disc. The end of the pipe fitting positioning bracket A is provided with a pipe fitting positioning bracket B via a cylinder for pressing and fixing the outer composite pipe fittings that are assembled into the rear frame of the electric vehicle. A sliding positioning seat is provided on one side of the pipe fitting positioning bracket A for sliding and tightening welding of the composite pipe fittings that are assembled into one side of the rear frame of the electric vehicle. A support positioning seat is provided on one side of the pipe fitting positioning bracket A for supporting the outer frame of the rear frame of the electric vehicle and positioning the pipe fittings by pressing them down. A pipe fitting positioning bracket C is provided on one side of the support positioning seat for supporting the outer frame of the rear frame of the electric vehicle and positioning the pipe fittings by pressing them down.

[0009] Preferably, a servo motor is installed in a groove at the end of the clamp seat, and a guide annular groove is provided at the end of the annular guide seat outside the servo motor to guide and support the sliding of the annular guide block. This allows the frame to maintain horizontal stability during rotation.

[0010] Preferably, the sliding positioning seat has a sliding block at one end, and a cylinder B is provided on one side of the sliding block. The end of the sliding block has a movable positioning block for supporting and positioning the tube on one side of the electric vehicle rear frame assembly, thereby supporting and fixing the tube on one side of the frame.

[0011] Preferably, the pipe positioning bracket A has cylinders C installed on both sides of the rotating clamping plate at the front and rear ends, and the lower end face of the pipe positioning bracket A has a first pressing clamp block, and the first pressing clamp block corresponds to the positioning support clamp seat on the bottom side for supporting and positioning the frame, which is used to position, support and press the pipe frame outside the frame.

[0012] Preferably, an inner support is provided between the inner sides of the support fixture seat to support the inner support rod of the electric vehicle frame, which is used to support and position the inner tubular parts of the outer frame of the vehicle frame, facilitating welding.

[0013] Preferably, a cylinder D is vertically fixed on one side of the upper end of the pipe positioning bracket C, and a second pressing clamp block is provided at the bottom of the cylinder D to press down the end of the electric vehicle frame. The bottom side of the second pressing clamp block is provided with a positioning block for supporting and positioning the end of the supporting pipe in the electric vehicle frame, so as to realize the support, positioning and pressing of the reinforcing supporting pipe at the end of the frame.

[0014] Preferably, a mounting block is provided in the middle of one side of the rotating clamping disk, and a pipe support seat is provided on the front and rear sides of the mounting block to support the bending position of the end of the electric vehicle frame, so as to achieve stable support for the end of the frame outer frame and ensure the stability of the frame assembly rotation welding.

[0015] Preferably, the bottom of the rotating clamping plate is provided with a supporting disc seat, and the lower end face of the supporting disc seat is fixedly connected to the rotating shaft of the servo motor to enhance the stable rotational support of the frame assembly.

[0016] Compared with the prior art, the technical effects and advantages of this utility model are as follows: The electric vehicle frame assembly welding fixture, through the combined use of a fixture seat, a rotating fixture disk, an annular guide block, an annular guide seat, and a servo motor, allows the electric vehicle frame assembly to be clamped and pressed by the welding fixture. Then, driven by the servo motor, the rotating fixture disk can be used to weld sequentially according to the welding position, and the rotational orientation of the electric vehicle frame assembly can be adjusted to a suitable welding position for welding work. This allows the electric vehicle frame assembly to complete the welding work in one go by rotating sequentially in different orientations, further improving the frame welding progress.

[0017] The welding fixture, consisting of a rotating clamping disc, pipe positioning bracket A, pipe positioning bracket B, sliding positioning seat, support positioning seat, pipe positioning bracket C, moving block, cylinder B, movable positioning block, cylinder C, first pressing clamping block, positioning support clamping seat, inner support, cylinder D, second pressing clamping block, positioning support block, mounting block, pipe support seat, and cylinder A, can position the pipes to be welded in each assembly of the electric vehicle's rear frame. It can also press down and position the assembled pipes after positioning, thereby achieving synchronous support and positioning of the outer frame rod, inner lining reinforcement rod, and support reinforcement rod of the electric vehicle frame assembly. This ensures that the electric vehicle frame assembly remains firm during one-time rotational welding and prevents the frame from loosening during rotation. Attached Figure Description

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

[0019] Figure 2 This is a top view of the rotating clamp seat of this utility model.

[0020] Figure 3 This is a top view of the fixture base of this utility model.

[0021] In the diagram: 1. Fixture base; 2. Rotating fixture disk; 3. Annular guide block; 4. Annular guide seat; 5. Pipe fitting positioning bracket A; 6. Pipe fitting positioning bracket B; 7. Sliding positioning seat; 8. Support positioning seat; 9. Pipe fitting positioning bracket C; 10. Servo motor; 11. Guide annular groove; 12. Moving block; 13. Cylinder B; 14. Movable positioning block; 15. Cylinder C; 16. First pressing fixture block; 17. Positioning support fixture base; 18. Inner support; 19. Cylinder D; 20. Second pressing fixture block; 21. Positioning support block; 22. Mounting block; 23. Pipe fitting support seat; 24. Support disc seat. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a welding fixture for an electric vehicle frame assembly, comprising:

[0024] The clamping base 1 has a rotating clamping plate 2 at its end for clamping the rear frame assembly of the electric vehicle, then rotating it in direction and adjusting its angle for welding. This allows the electric vehicle frame assembly to be pressed down, positioned, and clamped, then rotated in direction for welding. The bottom of the rotating clamping plate 2 has an annular guide block 3 to keep the rotation angle of the rotating clamping plate 2 stable during welding. This provides a rotational stabilization and guidance support for the rotating clamping plate 2. The bottom side of the annular guide block 3 has an annular guide seat 4 to keep the position of the annular guide block 3 unchanged during rotation.

[0025] The pipe fitting positioning bracket A5 is installed on one side of the end of the rotating clamping plate 2. The end of the pipe fitting positioning bracket A5 is equipped with a pipe fitting positioning bracket B6 via a cylinder for pressing and fixing the outer composite pipe fittings that are assembled into the rear frame of the electric vehicle. This can support and position the outer frame of the electric vehicle frame assembly. One side of the pipe fitting positioning bracket A5 is equipped with a sliding positioning seat 7 for sliding and tightening welding of the composite pipe fittings that are assembled into the rear frame of the electric vehicle. This provides a pneumatic pulling effect on the composite pipe fittings that are assembled into the outer frame of the electric vehicle frame assembly. One side of the pipe fitting positioning bracket A5 is equipped with a support positioning seat 8 for supporting and positioning the pipe fittings in the outer frame of the electric vehicle rear frame. One side of the support positioning seat 8 is equipped with a pipe fitting positioning bracket C9 for pressing and positioning the pipe fittings in the outer frame of the electric vehicle rear frame, ensuring the firmness of the outer frame of the electric vehicle frame assembly pipe fittings.

[0026] A servo motor 10 is installed in a groove at the end of the clamping seat 1, which drives the rotating clamping plate 2 to adjust the welding angle of the frame. The annular guide seat 4 outside the servo motor 10 of the rotating clamping plate 2 has a guide annular groove 11 at its end, which guides and supports the sliding of the annular guide block 3, thereby enhancing the stability of the rotation of the rotating clamping plate 2. A moving block 12 is slidably provided at the end of the sliding positioning seat 7, and a cylinder B13 is provided on one side of the moving block 12, which drives the sliding positioning seat 7 to position the transverse tube on one side of the frame. The moving block 12 has a movable positioning block 14 at its end, which supports and positions the tube on one side of the electric vehicle rear frame assembly. The sliding positioning seat 7 is slid to reinforce the positioning force. The pipe positioning bracket A5 is equipped with cylinders C15 installed at the front and rear of the end of the rotating clamp plate 2 on both sides, which push the moving block 12 to move. The lower end face of the pipe positioning bracket A5 is equipped with a first pressing clamp block 16, which presses the front and rear pipes of the positioning frame outer frame and presses down the inner reinforcement bracket for positioning. The first pressing clamp block 16 corresponds to the positioning support clamp seat 17 on the bottom side for supporting and positioning the frame. The inner side of the positioning support clamp seat 17 is equipped with an inner support 18 for supporting the inner support rod of the electric vehicle frame, which is used to support the inner reinforcement of the inner frame.

[0027] A cylinder D19 is vertically fixed on one side of the upper end of the pipe positioning bracket C9, and a second pressing clamp block 20 is provided at the bottom of the cylinder D19 to press down the end of the electric vehicle frame and position the outer frame at the end of the frame. A positioning block 21 is provided on the bottom side of the second pressing clamp block 20 to support and position the end of the supporting pipe in the electric vehicle frame. A mounting block 22 is provided in the middle of one side of the rotating clamp disk 2. Pipe support seats 23 are provided on the front and rear sides of the mounting block 22 to support the bending position of the end of the electric vehicle frame. A support disc seat 24 is provided at the bottom of the rotating clamp disk 2, and the lower end face of the support disc seat 24 is fixedly connected to the rotating shaft of the servo motor 10.

[0028] Specifically, in use, the required frame tubes are first bent into an outer frame using a bending forming equipment, and the frame support tubes are also bent into shape. Then, the outer frame is placed at the end of the rotating clamping plate 2, and the cylinder B13 drives the moving block 12 to move the sliding positioning seat 7 to tighten and position the transverse tubes on one side of the outer frame. Then, the tube positioning bracket A5 is used to position the middle left position of the outer frame, and the first pressing clamping block 16 is used to press down and clamp it. At this time, the position where the bending position extends to one side is stably supported and positioned by the tube support seat 23 on the mounting block 22, and the bent support tubes on the bottom side of the outer frame are positioned and supported by the tube positioning bracket B6, so that the two ends of the bent support tubes are connected to the bottom side of the outer frame. Moreover, the cylinder D19 set on the tube positioning bracket C9 pushes the second pressing clamping block 20 outward. The frame is pressed down and bent to ensure close contact between the two ends of the support tubes for welding. During the pressing and positioning process, the positioning block 21 supports and positions the bent support tubes. At this time, the inner support 18 is used to position and support the tubes that reinforce the inner side of the outer frame, so that the reinforced support tubes are pressed against the weld joints on the inner side of the outer frame to facilitate welding. This enhances the stability of the frame during rotation. After the electric vehicle frame assembly is clamped and pressed by the welding fixture, the servo motor 10 drives the rotating fixture disk 2 to weld sequentially according to the welding position. The rotation position of the electric vehicle frame assembly is adjusted to the appropriate welding position for welding, thus enabling the electric vehicle frame assembly to complete the welding work in one go by rotating sequentially, further improving the frame welding progress.

[0029] 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 fixture for an electric vehicle frame assembly, characterized in that, include: The clamping base (1) has a rotating clamping plate (2) at its end for clamping the electric vehicle rear frame assembly, rotating it in direction, adjusting its angle, and welding it. The bottom of the rotating clamping plate (2) has an annular guide block (3) to keep the rotation angle of the rotating clamping plate (2) stable during welding. The annular guide block (3) has an annular guide seat (4) on its bottom side. Pipe positioning bracket A (5) is installed on one side of the end of the rotating clamping plate (2), and the end of the pipe positioning bracket A (5) is provided with a pipe positioning bracket B (6) for pressing and fixing the outer composite pipes that are assembled into the rear frame of the electric vehicle through a cylinder. A sliding positioning seat (7) is provided on one side of the pipe positioning bracket A (5) for sliding and tightening welding of the composite pipes that are assembled into the rear frame of the electric vehicle. A support positioning seat (8) is provided on one side of the pipe positioning bracket A (5) for supporting the outer frame of the rear frame of the electric vehicle for pipe positioning. A pipe positioning bracket C (9) is provided on one side of the support positioning seat (8) for pressing and positioning the pipes that support the outer frame of the rear frame of the electric vehicle for pipe positioning.

2. The electric vehicle frame assembly welding fixture according to claim 1, characterized in that: A servo motor (10) is installed in a groove at the end of the fixture seat (1), and a guide annular groove (11) is provided at the end of the annular guide seat (4) on the outside of the servo motor (10) to guide and support the sliding of the annular guide block (3).

3. The electric vehicle frame assembly welding fixture according to claim 1, characterized in that: The sliding positioning seat (7) is slidably provided with a moving block (12) at its end, and a cylinder B (13) is provided on one side of the moving block (12). The moving block (12) is provided with a movable positioning block (14) at its end to support and position the pipe on one side of the electric vehicle rear frame assembly.

4. The electric vehicle frame assembly welding fixture according to claim 1, characterized in that: The pipe positioning bracket A (5) is provided with cylinders C (15) installed on both sides of the rotating clamping plate (2) at the front and rear ends, and the lower end face of the pipe positioning bracket A (5) is provided with a first pressing clamp block (16), and the first pressing clamp block (16) corresponds to the positioning support clamp seat (17) for supporting and positioning the vehicle frame on the bottom side.

5. The electric vehicle frame assembly welding fixture according to claim 4, characterized in that: An inner support (18) is provided between the inner sides of the positioning support clamp seat (17) to support the inner support rod of the electric vehicle frame.

6. The electric vehicle frame assembly welding fixture according to claim 1, characterized in that: A cylinder D (19) is vertically fixed on one side of the upper end of the pipe positioning bracket C (9), and a second pressing clamp block (20) is provided at the bottom of the cylinder D (19) to press down the end of the electric vehicle frame, and a positioning block (21) is provided on the bottom side of the second pressing clamp block (20) to support and position the end of the supporting pipe in the electric vehicle frame.

7. The electric vehicle frame assembly welding fixture according to claim 1, characterized in that: The rotating clamping disk (2) has a mounting block (22) in the middle of one side, and the mounting block (22) has a pipe support seat (23) on the front and rear sides to support the bending position of the end of the electric vehicle frame.

8. The electric vehicle frame assembly welding fixture according to claim 1, characterized in that: The bottom of the rotating clamping disk (2) is provided with a support disk seat (24), and the lower end face of the support disk seat (24) is fixedly connected to the rotating shaft of the servo motor (10).

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