Rotary assembly tool for automobile rear bumper
By using a motor-driven rack and pinion system and an electric push rod to automatically adjust the clamping components, combined with a rotary assembly fixture, the problem of unstable assembly of automotive rear bumpers in existing technologies has been solved, achieving a high-precision and high-efficiency assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-20
AI Technical Summary
In the current automotive rear bumper assembly process, the clamping device needs to be manually adjusted, which is time-consuming and labor-intensive, and the clamping is unstable, affecting the assembly accuracy and efficiency, and easily causing damage or deformation to the workpiece surface.
The system employs a motor-driven rack and pinion system and an electric push rod to automatically adjust the position of the clamping parts. Combined with a rotary assembly fixture, it achieves stable clamping and rotary machining of the workpiece.
It improves the accuracy and efficiency of workpiece assembly, reduces manual adjustment time, avoids assembly errors caused by workpiece vibration and movement, and ensures the stability and uniformity of workpieces.
Smart Images

Figure CN224012182U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive processing technology, and in particular to a rotating assembly fixture for automotive rear bumpers. Background Technology
[0002] Car bumpers, also known as car guards, are located at the front and rear of a car. They not only have a decorative function, but more importantly, they are safety devices that absorb and mitigate external impacts, protect the car body, and ensure the safety of the occupants.
[0003] In existing automotive parts assembly technologies, the assembly of the rear bumper is an important and complex process. However, existing technologies have some inconveniences, especially when clamping and fixing large and complex-shaped workpieces like the rear bumper. Common clamping devices often require operators to manually adjust the position and force of the clamps, which is not only time-consuming and labor-intensive, but also makes it difficult to ensure the stability and uniformity of the clamping. If the workpiece is not fixed stably during assembly, it may move or vibrate, affecting the assembly accuracy and efficiency. Uneven clamping force can also cause damage or deformation to the workpiece surface. Manual operation increases the workload of operators and can easily lead to fatigue and misoperation. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a rotating assembly fixture for automotive rear bumpers, aiming to improve the problem that existing rotating assembly fixtures for automotive rear bumpers are inconvenient for fixing workpieces.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotating assembly fixture for a car rear bumper, comprising a worktable and a processing table. A second motor is fixedly connected inside the processing table, and a rotating shaft is fixedly connected to the output end of the second motor. A gear is fixedly connected to the outside of the rotating shaft. A rack plate is fixedly connected to the upper part of the gear, and a moving plate is fixedly connected to the upper part of the rack plate. A positioning plate is fixedly connected to the right side of the moving plate, and a clamping component is fixedly connected to the right side of the positioning plate. A positioning seat is fixedly connected to the upper part of the processing table, and an electric push rod is fixedly connected to the right side of the positioning seat. A connecting plate is fixedly connected to the output end of the electric push rod, and a fixing component is fixedly connected to the left side of the connecting plate. The fixing component is used to fix the workpiece.
[0006] Furthermore, a fixed frame is fixedly connected to the bottom of the workbench, a motor is fixedly connected to the upper part of the fixed frame, a drive gear is fixedly connected to the output end of the motor, a rotating rod is rotatably connected inside the workbench, a driven gear is fixedly connected to the outside of the rotating rod, the driven gear is meshed with the right side of the drive gear, and a processing table is fixedly connected to the upper part of the rotating rod.
[0007] Furthermore, the fixing assembly includes a movable rod and a clamping block, one end of the movable rod being fixedly connected to the left side of the connecting plate, and the clamping block being fixedly connected to the other end of the movable rod.
[0008] Furthermore, the movable rod is slidably connected inside the positioning seat, and a clamping member two is fixedly connected to the left side of the positioning seat.
[0009] Furthermore, a movable block is fixedly connected to one side of the bottom of the movable plate, a guide rod is fixedly connected inside the processing table, and the movable block is slidably connected to the outside of the guide rod.
[0010] Furthermore, the movable block is slidably connected inside the processing table, and the movable plate is slidably connected inside the processing table.
[0011] Furthermore, the processing table is rotatably connected to the upper part of the worktable.
[0012] Furthermore, the rack plate is slidably connected inside the processing table, and the second clamping member is located on the right side of the first clamping member.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, the starting motor drives the gear to rotate, causing the rack plate and the moving plate to slide, which in turn drives the clamping component one to move and clamp the workpiece with the clamping component two. Then, the electric push rod is started to fix the upper part of the workpiece through the connecting plate and the movable rod, thereby achieving stable clamping of the workpiece, preventing vibration or movement, and improving the processing accuracy.
[0015] 2. In this utility model, by starting motor one, the driving gear drives the driven gear to rotate, so that the rotating rod drives the processing table and the workpiece to rotate synchronously, which facilitates the workpiece rotation processing, reduces manual adjustment, and improves assembly efficiency. Attached Figure Description
[0016] Figure 1 This is a front view of a rotating assembly tool for a car rear bumper proposed in this utility model;
[0017] Figure 2 This is a top view of a rotating assembly fixture for a car rear bumper proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of a machining table for a rotating assembly tool for a rear bumper of an automobile, as proposed in this utility model.
[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0020] Legend:
[0021] 1. Workbench; 2. Fixed frame; 3. Motor 1; 4. Drive gear; 5. Driven gear; 6. Rotating rod; 7. Machining table; 8. Motor 2; 9. Gear; 10. Rack plate; 11. Moving plate; 12. Positioning plate; 13. Clamping component 1; 14. Guide rod; 15. Moving block; 16. Positioning seat; 17. Electric push rod; 18. Connecting plate; 19. Movable rod; 20. Clamping block; 21. Clamping component 2. 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] Reference Figures 2-4 This utility model provides an embodiment of a rotary assembly fixture for a car rear bumper, comprising a workbench 1 and a processing table 7. A second motor 8 is fixedly connected inside the processing table 7. A rotating shaft is fixedly connected to the output end of the second motor 8. A gear 9 is fixedly connected to the outside of the rotating shaft. A rack plate 10 is fixedly connected to the upper part of the gear 9. A moving plate 11 is fixedly connected to the upper part of the rack plate 10. A positioning plate 12 is fixedly connected to the right side of the moving plate 11. A clamping component 13 is fixedly connected to the right side of the positioning plate 12. A positioning seat 16 is fixedly connected to the upper part of the processing table 7. An electric push rod 17 is fixedly connected to the right side of the positioning seat 16. A connecting plate 18 is fixedly connected to the output end of the electric push rod 17. A fixing component is fixedly connected to the left side of the connecting plate 18. The fixing assembly is used to fix the workpiece. The fixing assembly includes a movable rod 19 and a clamping block 20. One end of the movable rod 19 is fixedly connected to the left side of the connecting plate 18, and the clamping block 20 is fixedly connected to the other end of the movable rod 19. The movable rod 19 is slidably connected inside the positioning seat 16. A clamping element 21 is fixedly connected to the left side of the positioning seat 16. A moving block 15 is fixedly connected to one side of the bottom of the moving plate 11. A guide rod 14 is fixedly connected inside the processing table 7. The moving block 15 is slidably connected to the outside of the guide rod 14 and inside the processing table 7. The moving plate 11 is slidably connected to the inside of the processing table 7. The rack plate 10 is slidably connected to the inside of the processing table 7. The clamping element 21 is located on the right side of the clamping element 13.
[0024] The workpiece is placed on the upper surface of the processing table 7, and the motor 8 is started. Its output end then drives the rotating shaft to rotate. As the rotating shaft rotates, the gear 9 also rotates. Under the action of the gear 9, the rack plate 10 begins to move axially. This action allows the moving plate 11 to slide smoothly inside the processing table 7. As the moving plate 11 slides, the moving block 15 moves synchronously along the outside of the guide rod 14. The guide rod 14 provides guidance for the moving block 15, ensuring that it maintains linear motion during the external sliding process. Under the action of the moving block 15, the moving plate 11 further drives the positioning plate 12 and the clamping member 13 to the right. The workpiece is moved to the side until it works together with clamping element 21 to securely hold the workpiece in place. Clamping element 13 works in conjunction with positioning plate 12 to clamp one side of the workpiece and works in conjunction with clamping element 21. Clamping element 21 is opposite to clamping element 13 and is used to clamp the other side of the workpiece to ensure that the workpiece will not move during assembly. Then, the electric push rod 17 is activated, and its output end pushes the connecting plate 18 to move. The movement of the connecting plate 18 causes the movable rod 19 to slide within the positioning seat 16. The sliding of the movable rod 19 causes the clamping block 20 to move to the left, thereby firmly fixing the upper part of the workpiece.
[0025] Reference Figure 1 and Figure 3 A fixed frame 2 is fixedly connected to the bottom of the worktable 1. A motor 3 is fixedly connected to the upper part of the fixed frame 2. A drive gear 4 is fixedly connected to the output end of the motor 3. A rotating rod 6 is rotatably connected inside the worktable 1. A driven gear 5 is fixedly connected to the outside of the rotating rod 6. The driven gear 5 is meshed with the right side of the drive gear 4. A processing table 7 is fixedly connected to the upper part of the rotating rod 6. The processing table 7 is rotatably connected to the upper part of the worktable 1.
[0026] When the motor 3 is started, its output end drives the drive gear 4 to rotate. The drive gear 4 meshes tightly with the driven gear 5, thereby guiding the driven gear 5 to rotate. As the driven gear 5 rotates, the rotating rod 6 also begins to rotate. The rotation of the rotating rod 6 is further transmitted to the processing table 7, which is a platform that carries the workpiece. Through the rotation of the rotating rod 6, the processing table 7 can rotate, thereby driving the workpiece on it to rotate synchronously.
[0027] Working principle: First, the workpiece is placed on the upper part of the processing table 7. Motor 8 is started, and its output drives the rotating shaft to rotate. The rotating shaft drives gear 9 to rotate, which in turn moves rack plate 10. As rack plate 10 moves, it causes moving plate 11 to slide inside the processing table 7. Moving plate 11 then causes moving block 15 to slide outside guide rod 14. Under the action of moving block 15, moving plate 11 moves positioning plate 12 and clamping element 13 to the right until clamping element 21 holds the workpiece in place. Then, electric push rod 17 is started, and its output drives connecting plate 18 to move. Connecting plate 18 causes movable rod 19 to slide inside positioning seat 16. When sliding, the clamping block 20 moves to the left, fixing the upper part of the workpiece. This effectively clamps and secures the workpiece, ensuring stability during processing and assembly. It avoids assembly errors caused by vibration or movement, improving processing accuracy. Motor 3 is started, and its output drives the drive gear 4 to rotate. The drive gear 4 drives the meshing driven gear 5 to rotate, which in turn drives the rotating rod 6 to rotate. The rotation of the rotating rod 6 drives the processing table 7 to rotate, allowing the processing table 7 to synchronously rotate the upper workpiece. This facilitates workpiece rotation, eliminating the need for frequent position changes during assembly, reducing operator time, and improving assembly efficiency.
[0028] 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 rotating assembly fixture for a car rear bumper, comprising a worktable (1) and a processing table (7), characterized in that: The processing table (7) is internally fixedly connected to a second motor (8), the output end of the second motor (8) is fixedly connected to a rotating shaft, the external part of the rotating shaft is fixedly connected to a gear (9), the upper part of the gear (9) is fixedly connected to a rack plate (10), the upper part of the rack plate (10) is fixedly connected to a moving plate (11), the right side of the moving plate (11) is fixedly connected to a positioning plate (12), the right side of the positioning plate (12) is fixedly connected to a clamping component (13), the upper part of the processing table (7) is fixedly connected to a positioning seat (16), the right side of the positioning seat (16) is fixedly connected to an electric push rod (17), the output end of the electric push rod (17) is fixedly connected to a connecting plate (18), the left side of the connecting plate (18) is fixedly connected to a fixing component, the fixing component is used to fix the workpiece.
2. The automotive rear bumper rotation assembly fixture according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to a fixed frame (2), the upper part of the fixed frame (2) is fixedly connected to a motor (3), the output end of the motor (3) is fixedly connected to a drive gear (4), the inside of the workbench (1) is rotatably connected to a rotating rod (6), the outside of the rotating rod (6) is fixedly connected to a driven gear (5), the driven gear (5) is meshed with the right side of the drive gear (4), and the upper part of the rotating rod (6) is fixedly connected to a processing table (7).
3. The automotive rear bumper rotation assembly fixture according to claim 1, characterized in that: The fixing assembly includes a movable rod (19) and a clamping block (20). One end of the movable rod (19) is fixedly connected to the left side of the connecting plate (18), and the clamping block (20) is fixedly connected to the other end of the movable rod (19).
4. The automotive rear bumper rotation assembly fixture according to claim 3, characterized in that: The movable rod (19) is slidably connected inside the positioning seat (16), and the left side of the positioning seat (16) is fixedly connected to the clamping member two (21).
5. The automotive rear bumper rotation assembly fixture according to claim 1, characterized in that: A movable block (15) is fixedly connected to one side of the bottom of the movable plate (11), and a guide rod (14) is fixedly connected inside the processing table (7). The movable block (15) is slidably connected to the outside of the guide rod (14).
6. The automotive rear bumper rotation assembly fixture according to claim 5, characterized in that: The movable block (15) is slidably connected inside the processing table (7), and the movable plate (11) is slidably connected inside the processing table (7).
7. The automotive rear bumper rotation assembly fixture according to claim 2, characterized in that: The processing table (7) is rotatably connected to the upper part of the worktable (1).
8. The automotive rear bumper rotation assembly fixture according to claim 4, characterized in that: The rack plate (10) is slidably connected inside the processing table (7), and the clamping member two (21) is located on the right side of the clamping member one (13).