Riveting structure

Abstract

The utility model relates to the technical field of riveting structures, and discloses a riveting structure which comprises a fixed base, an L-shaped stand column is fixedly connected to the upper surface of the fixed base, a hydraulic cylinder is fixedly connected to the top of the L-shaped stand column, a connecting base is fixedly connected to the output end of the hydraulic cylinder, and a pressing head is slidably connected to the interior of the connecting base. A dismounting and mounting assembly is arranged in the connecting base. And the dismounting and mounting assembly comprises a clamping block, the outer wall of the clamping block is slidably connected to the interior of the connecting base, the outer wall of the connecting base is rotationally connected with a rotating ring, and the inner wall of the rotating ring is fixedly connected with an arc-shaped plate. According to the pressure head, the diversified requirements of different riveting processes on the pressure head are met, the maintenance cost is reduced through the modular design, the adaptability of equipment to complex workpieces is improved, and the flexibility of riveting operation and the production efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of riveting structure technology, and in particular to a riveting structure. Background Technology

[0002] In the field of machining, riveting is widely used in industries such as automobile manufacturing, electronic equipment, and aerospace. It applies pressure to workpieces to induce plastic deformation or permanent connection, and is one of the key technologies for fixing and assembling parts. As industrial production develops towards higher precision, higher efficiency, and greater flexibility, higher demands are placed on the adaptability and automation level of riveting equipment. A riveting structure that can flexibly adapt to different workpiece specifications, quickly switch processing modes, and ensure processing stability has become an important research direction for improving the intelligence level of production lines and reducing production costs.

[0003] Traditional riveting equipment typically uses a fixed-structure pressure head, the shape and size of which must be pre-customized according to the specific workpiece. Changing workpieces often requires tedious steps such as bolt removal and manual calibration to replace the pressure head. The entire process relies on specialized tools and manual operation, is time-consuming, and demands a high level of skill from the operators. Furthermore, the workpiece clamping process often uses manually adjustable clamps or fixtures, relying on visual alignment and individual screw fixing. This makes it difficult to ensure uniform clamping force, especially for irregularly shaped or significantly sized workpieces. This can easily lead to positioning deviations or localized extrusion deformation, resulting in decreased riveting accuracy and lower yield.

[0004] When existing riveting equipment needs to process workpieces of different specifications, the fixed-structure indenter cannot quickly adapt to the diverse riveting process requirements. Frequent manual disassembly and installation not only prolongs equipment downtime and increases production interruption costs, but may also lead to inaccurate indenter positioning due to operational errors, affecting the subsequent riveting quality. In addition, the reliance on special tools during traditional indenter replacement further exacerbates maintenance costs and operational complexity, becoming a major bottleneck restricting the flexible production of riveting equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a riveting structure, which aims to improve the problem that the fixed-structure pressure head of existing riveting equipment is difficult to quickly adapt to the diverse riveting process requirements when processing workpieces of different specifications.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a riveting structure, including a fixed base, an L-shaped column fixedly connected to the upper surface of the fixed base, a hydraulic cylinder fixedly connected to the top of the L-shaped column, a connecting seat fixedly connected to the output end of the hydraulic cylinder, a pressure head slidably connected inside the connecting seat, and a disassembly and assembly assembly provided inside the connecting seat.

[0007] The disassembly and assembly assembly includes a locking block, the outer wall of which is slidably connected to the inside of the connecting seat. A rotating ring is rotatably connected to the outer wall of the connecting seat. An arc-shaped plate is fixedly connected to the inner wall of the rotating ring. A sliding rod is slidably connected to the outer wall of the arc-shaped plate. One end of the sliding rod is fixedly connected to the locking block. A limit plate is fixedly connected to the outer wall of the sliding rod. A spring is sleeved on the outer wall of the sliding rod.

[0008] Furthermore, a trapezoidal support is fixedly connected to the outer wall of the L-shaped column, a fixing plate one is fixedly connected to the upper surface of the trapezoidal support, and a fixing plate two is fixedly connected to the upper surface of the fixing plate one.

[0009] Furthermore, a cylinder is fixedly connected to one side of the outer wall of the second fixing plate, a push plate is fixedly connected to the output end of the cylinder, a sliding shaft is slidably connected inside the push plate, and a clamping assembly is provided at the top end of the sliding shaft.

[0010] Furthermore, the clamping assembly includes a clamping plate and a clamp, one end of the clamping plate is fixedly connected to the top end of the sliding shaft, the outer wall of the clamp is fixedly connected to the other end of the clamping plate, a rotating shaft is fixedly connected inside the clamping plate, and a gear set is provided on the outer wall of the rotating shaft.

[0011] Furthermore, the clamping plate is rotatably connected inside the second fixed plate, and both ends of the rotating shaft are rotatably connected inside the second fixed plate.

[0012] Furthermore, the outer wall of the card block is slidably connected to a mounting hole opened inside the pressure head, the mounting hole being used to limit the pressure head.

[0013] Furthermore, the outer wall of the limiting plate is slidably connected to the inside of the connecting seat, and the limiting plate is used to limit the sliding rod.

[0014] Furthermore, one end of the spring is fixedly connected to the outer wall of the limiting plate, and the other end of the spring is fixedly connected to the inside of the connecting seat.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the linkage replacement mechanism composed of a rotating ring, an arc plate, a sliding rod, a limiting plate, a spring, and a locking block enables the rapid disassembly and installation of the pressure head. When it is necessary to replace the pressure head with a different specification, simply drive the rotating ring to rotate, and the sliding rod will be pushed by the inclined surface of the arc plate to retract the locking block. The pressure head can be disassembled without the need for additional tools. During installation, the locking block will automatically engage and fix the pressure head by relying on the spring rebound, which greatly shortens the equipment debugging time. It not only meets the diverse needs of different riveting processes for pressure heads, but also reduces maintenance costs through modular design, improves the equipment's adaptability to complex workpieces, and significantly improves the flexibility and production efficiency of riveting operations.

[0017] 2. In this utility model, a linkage clamping mechanism composed of a cylinder, push plate, slide shaft, clamping plate, rotating shaft, gear set, and fixture is used to realize automatic centering and clamping of the workpiece. After the workpiece is placed on the platform, the cylinder drives the push plate to move the slide shaft. Through the transmission of the gear set, the clamping plates on both sides rotate synchronously relative to each other around the rotating shaft, which drives the fixture to adaptively clamp the workpiece and avoid the deformation problem caused by uneven force on the workpiece. At the same time, the linkage design of the clamping plate and fixture can quickly complete the positioning and fixing of workpieces of different sizes, reduce manual adjustment steps, improve clamping efficiency, and form a fully automated operation from workpiece fixing to riveting, effectively improving the stability of riveting processing and the finished product qualification rate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a riveting structure proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a riveting structure connector proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the rotating ring of the riveting structure proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the upper structure of the fixing plate of the riveting structure proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of one side of the clamping plate structure of the riveting structure proposed in this utility model.

[0023] Legend:

[0024] 1. Fixed base; 2. L-shaped column; 3. Hydraulic cylinder; 4. Connecting seat; 5. Pressure head; 6. Mounting hole; 7. Rotating ring; 8. Arc plate; 9. Sliding rod; 10. Spring; 11. Limiting plate; 12. Locking block; 13. Trapezoidal support; 14. Fixed plate one; 15. Cylinder; 16. Push plate; 17. Sliding shaft; 18. Clamping plate; 19. Gear set; 20. Fixture; 21. Rotating shaft; 22. Fixed plate two. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-3 This utility model provides an embodiment of a riveting structure, including a fixed base 1, an L-shaped column 2 fixedly connected to the upper surface of the fixed base 1, a hydraulic cylinder 3 fixedly connected to the top of the L-shaped column 2, a connecting seat 4 fixedly connected to the output end of the hydraulic cylinder 3, a pressure head 5 slidably connected inside the connecting seat 4, the connecting seat 4 serving as a transmission mechanism carrier, and the internal guide groove and slot providing a motion track for the sliding rod 9 and the locking block 12; the pressure head 5 is a riveting actuator, which can be quickly disassembled and assembled through the slot and the locking block 12; the connecting seat 4 is provided with disassembly and assembly components inside.

[0027] The assembly / disassembly component includes a locking block 12, which, by engaging or disengaging from the locking slot of the pressure head 5, secures or separates the pressure head 5 from the connecting seat 4. The outer wall of the locking block 12 is slidably connected to the interior of the connecting seat 4. A rotating ring 7 is rotatably connected to the outer wall of the connecting seat 4. Rotation of the ring 7 drives the arc-shaped plate 8 to move laterally, triggering the entire linkage mechanism. The inner wall of the rotating ring 7 is fixedly connected to the arc-shaped plate 8, which contacts the rotating ring 7 and the sliding rod 9 on both sides respectively, converting the rotational motion of the rotating ring 7 into the lateral linear motion of the sliding rod 9, thus transmitting force and changing direction. The outer wall of the arc-shaped plate 8 is slidably connected to the sliding rod 9, connecting the arc-shaped plate 8 and the locking block 12. By sliding within the guide groove inside the connecting seat 4, the sliding rod 12 pushes the locking block 12 to extend or retract, locking and unlocking the pressure head 5. One end is fixedly connected to the locking block 12. The outer wall of the sliding rod 9 is fixedly connected to the limiting plate 11, and one end of the fixed spring 10 is fixed to limit the movement of the sliding rod 9. At the same time, the spring 10 provides support force when it rebounds to ensure that the locking block 12 is reset in place. The outer wall of the sliding rod 9 is fitted with the spring 10. When released, the sliding rod 9 is pushed to drive the locking block 12 to automatically engage, thereby realizing the quick locking of the pressure head 5 and reducing manual operation. The outer wall of the locking block 12 is slidably connected to the mounting hole 6 opened inside the pressure head 5. The mounting hole 6 is used to limit the pressure head 5. The outer wall of the limiting plate 11 is slidably connected to the inside of the connecting seat 4. The limiting plate 11 is used to limit the sliding rod 9. One end of the spring 10 is fixedly connected to the outer wall of the limiting plate 11, and the other end of the spring 10 is fixedly connected to the inside of the connecting seat 4.

[0028] Specifically, when the drive rotating ring 7 rotates, the inclined surface of the arc plate 8 pushes the sliding rod 9 to cause the locking block 12 to retract, allowing the pressure head 5 to be disassembled without tools; during installation, the spring 10 rebounds to automatically engage the locking block 12, shortening the debugging time. This structure meets diverse riveting needs, reduces maintenance costs through modular design, and improves the equipment's adaptability to complex workpieces and operational efficiency.

[0029] Reference Figure 1 , Figure 4 and Figure 5A trapezoidal support 13 is fixedly connected to the outer wall of the L-shaped column 2. A fixing plate 14 is fixedly connected to the upper surface of the trapezoidal support 13. A fixing plate 22 is fixedly connected to the upper surface of the fixing plate 14. A cylinder 15 is fixedly connected to one side of the outer wall of the fixing plate 22. The cylinder 15 pushes the push plate 16 to move linearly through the extension and retraction of the piston rod, providing the initial driving force for the clamping action. The output end of the cylinder 15 is fixedly connected to the push plate 16, which transmits the thrust of the cylinder 15 and drives the sliding shaft 17 to move. The linear motion is converted into the rotational power of the clamping plate 18 through the sliding hole of the sliding shaft 17. The sliding shaft 17 is slidably connected inside the push plate 16, connecting the push plate 16 and the clamping plate 18. By sliding in the sliding hole at the bottom of the clamping plate 18, the clamping plate 18 is allowed to generate lateral displacement when rotating. The sliding shaft 17 is designed to accommodate workpieces of different sizes. A clamping assembly, including a clamping plate 18 and a clamp 20, is located at the top of the sliding shaft 17. One end of the clamping plate 18 is fixedly connected to the top of the sliding shaft 17, clamping the workpiece. The clamping plate 18 rotates around the pivot 21, causing the clamp 20 to move and clamp the workpiece. The outer wall of the clamp 20 is fixedly connected to the other end of the clamping plate 18. The pivot 21 is fixedly connected inside the clamping plate 18. A gear set 19 is located on the outer wall of the pivot 21. The gears mesh to achieve synchronous reverse rotation of the two clamping plates 18, eliminating angular deviations during clamping, ensuring workpiece alignment, and preventing deformation caused by uneven force. The clamping plate 18 is rotatably connected inside the fixed plate 22, and both ends of the pivot 21 are rotatably connected inside the fixed plate 22.

[0030] Specifically, cylinder 15 drives push plate 16 to drive slide shaft 17, which in turn causes clamping plate 18 to rotate synchronously through gear set 19. Fixture 20 adaptively clamps the workpiece, and gear transmission ensures uniform clamping force to avoid workpiece deformation. The linkage between clamping plate 18 and fixture 20 can quickly position workpieces of different sizes, reducing manual adjustment. Combined with pressure head 5 changing mechanism, it forms a fully automated process, improving processing stability and yield.

[0031] Working principle: When the riveting structure is required, the workpiece is first placed on the shelf above the fixed plate 14. Then, the hydraulic cylinder 3 is started to drive the pressure head 5 to rivet the workpiece. During this process, the rotating ring 7 can be driven to rotate on the outer wall of the connecting seat 4, thereby driving the arc plates 8 on both sides to move. Then, the inclined surface of the arc plate 8 pushes the sliding rod 9 to slide inside the connecting seat 4, thereby driving the spring 10 to retract through the limiting plate 11. The movement of the sliding rod 9 can also drive the locking block 12 to move inside the connecting seat 4 and the pressure head 5. When the locking block 12 is completely moved into the inside of the connecting seat 4, the pressure head 5 can be removed for replacement. During installation, simply put the pressure head 5 back in its original position and then release the rotating ring 7. At this time, the spring 10 will rebound and drive the locking block 12 back into the inside of the pressure head 5 for fixation, thus realizing the replacement of the pressure head 5.

[0032] In addition, when the workpiece is placed on the platform, the cylinder 15 is activated to move the push plate 16, which in turn drives the clamping plate 18 to rotate around the rotating shaft 21 via the sliding shaft 17. The clamping plate 18 can also drive the rotating shaft 21 to rotate together, and the rotation of the rotating shaft 21 drives the gear set 19 to run, so that the clamping plates 18 on both sides rotate relative to each other, which in turn drives the fixture 20 to clamp and fix the workpiece.

[0033] 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 riveting structure, comprising a fixed base (1), characterized in that: An L-shaped column (2) is fixedly connected to the upper surface of the fixed base (1), a hydraulic cylinder (3) is fixedly connected to the top of the L-shaped column (2), a connecting seat (4) is fixedly connected to the output end of the hydraulic cylinder (3), a pressure head (5) is slidably connected inside the connecting seat (4), and a disassembly and assembly assembly is provided inside the connecting seat (4). The disassembly and assembly assembly includes a locking block (12), the outer wall of which is slidably connected to the inside of the connecting seat (4), the outer wall of the connecting seat (4) is rotatably connected to a rotating ring (7), the inner wall of the rotating ring (7) is fixedly connected to an arc plate (8), the outer wall of the arc plate (8) is slidably connected to a sliding rod (9), one end of the sliding rod (9) is fixedly connected to the locking block (12), the outer wall of the sliding rod (9) is fixedly connected to a limit plate (11), and the outer wall of the sliding rod (9) is sleeved with a spring (10).

2. The riveting structure according to claim 1, characterized in that: The outer wall of the L-shaped column (2) is fixedly connected to a trapezoidal support (13), the upper surface of the trapezoidal support (13) is fixedly connected to a fixing plate one (14), and the upper surface of the fixing plate one (14) is fixedly connected to a fixing plate two (22).

3. The riveting structure according to claim 2, characterized in that: A cylinder (15) is fixedly connected to one side of the outer wall of the fixed plate 2 (22). A push plate (16) is fixedly connected to the output end of the cylinder (15). A sliding shaft (17) is slidably connected inside the push plate (16). A clamping assembly is provided at the top of the sliding shaft (17).

4. The riveting structure according to claim 3, characterized in that: The clamping assembly includes a clamping plate (18) and a clamp (20). One end of the clamping plate (18) is fixedly connected to the top of the sliding shaft (17), and the outer wall of the clamp (20) is fixedly connected to the other end of the clamping plate (18). A rotating shaft (21) is fixedly connected inside the clamping plate (18), and a gear set (19) is provided on the outer wall of the rotating shaft (21).

5. A riveting structure according to claim 4, characterized in that: The clamping plate (18) is rotatably connected inside the second fixed plate (22), and both ends of the rotating shaft (21) are rotatably connected inside the second fixed plate (22).

6. The riveting structure according to claim 1, characterized in that: The outer wall of the card block (12) is slidably connected to the mounting hole (6) opened inside the pressure head (5), and the mounting hole (6) is used to limit the pressure head (5).

7. The riveting structure according to claim 1, characterized in that: The outer wall of the limiting plate (11) is slidably connected to the inside of the connecting seat (4), and the limiting plate (11) is used to limit the sliding rod (9).

8. A riveting structure according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the outer wall of the limiting plate (11), and the other end of the spring (10) is fixedly connected to the inside of the connecting seat (4).

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