A pneumatic spin riveter

Abstract

This utility model relates to the field of parts processing technology, and in particular to a pneumatic riveting machine. The pneumatic riveting machine includes: a worktable, a tightening assembly, a receiving block, a sliding rod, a sliding block, and a driving assembly. A placement plate is fixedly connected to the top of the worktable, and a placement mold is placed in the center of the top of the placement plate. Assembly plates are symmetrically fixedly connected to the outside of the placement mold. Mounting holes are provided on the far sides of the two assembly plates, and tightening assemblies are installed on the inner walls of the mounting holes. Receiving blocks are symmetrically fixedly connected to the top of the placement plates, and a controller is installed on one side of the rear receiving block. Connecting blocks are slidably connected to the inner walls of the adjacent sides of the two receiving blocks, and a carrying column is fixedly connected to the adjacent sides of the two connecting blocks. This utility model eliminates the need for a separate starting and fixing fixture like traditional equipment, solving the positioning deviation problem caused by poor coordination between traditional fixtures and riveting, and avoiding damage to the workpiece due to excessive clamping force.

Description

Technical Field

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

[0002] A pneumatic riveting machine is a riveting device powered by compressed air. It uses axial pressure and rotational power provided by pneumatic components to drive the riveting head to spin the rivet inserted into the pre-drilled hole of the workpiece, causing plastic deformation at the end of the rivet, thereby firmly splicing workpieces such as sheet metal. It is widely used in automobile manufacturing, hardware processing and other fields, and features convenient operation and high efficiency.

[0003] Most pneumatic riveting machines first align two plates, then insert rivets into pre-drilled holes in the workpiece and fix them with a positioning fixture. At this point, the rivet head is moved axially downwards, close to the rivet end, and initial pressure is applied. Then, the pneumatic motor starts to drive the rivet head to rotate. Under the action of pressure and rotational force, the rivet end is upset outwards, gradually filling the mold cavity of the rivet head and tightly pressing the workpiece surface, ultimately forming a rivet head that matches the shape of the rivet head, thus achieving a fixed connection of the workpiece. However, this requires first activating the fixing fixture to fix the plates before performing the riveting operation. The operation process is cumbersome, inefficient, and the coordination between the fixture and the riveting is poor, making it prone to positioning deviations. Furthermore, it has poor adaptability to thin-walled workpieces and is prone to workpiece damage.

[0004] Therefore, it is necessary to provide a new pneumatic riveting machine to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pneumatic riveting machine.

[0006] This utility model provides a pneumatic riveting machine comprising: a worktable, a tightening assembly, a receiving block, a sliding rod, a sliding block, and a driving assembly. A placement plate is fixedly connected to the top of the worktable. A placement mold is placed in the center of the top of the placement plate. Assembly plates are symmetrically fixedly connected to the outside of the placement mold. Mounting holes are provided on the far sides of the two assembly plates, and tightening assemblies are installed on the inner walls of the mounting holes. Receiving blocks are symmetrically fixedly connected to the top of the placement plates. A controller is installed on one side of the rear receiving block. Connecting blocks are slidably connected to the inner walls of the adjacent sides of the two receiving blocks. The adjacent sides of the two connecting blocks are fixedly connected... The container has a carrying column, a connecting handle installed on the inner wall of its top end, a drive motor installed at the top of the carrying column, a working head fixedly connected to the bottom end of the connecting handle, multiple sliding rods slidably connected to the inner wall of the bottom end of the carrying column, a strong spring sleeved on the outside of the sliding rods, a pressure plate fixedly connected to the bottom end of the multiple sliding rods, a through hole opened at the axis of the pressure plate, a sliding block slidably connected to the inner wall of the receiving block, a fixed rod fixedly connected to the inside of the front receiving block, a threaded rod rotatably connected to the inside of the rear receiving block, and a movable chamber opened at the bottom end of the rear receiving block, with a drive assembly installed inside the movable chamber.

[0007] Preferably, the tightening assembly includes a bolt, the outer side of which contacts the inner wall of the mounting hole, and a nut is threaded onto the outer tip of the bolt.

[0008] Preferably, the drive assembly includes a driven bevel gear, the top of which is rotatably connected to the top of the inner wall of the movable chamber, an active bevel gear is rotatably connected to the rear inner wall of the movable chamber, and a servo motor is installed on the rear side of the top of the placement plate.

[0009] Preferably, the drive end of the drive motor is fixedly connected to the top end of the connecting handle.

[0010] Preferably, the outer ring of the loading column has multiple sliding holes, and the inner wall of the sliding holes is slidably connected to a limiting plate. The bottom end of the limiting plate is fixedly connected to the top end of the sliding rod.

[0011] Preferably, the adjacent sides of the two sliding blocks are fixedly connected to the distant sides of the two connecting blocks, the outer side of the fixing rod is slidably connected to the inner wall of the front sliding block, and the outer side of the threaded rod is threadedly connected to the inner wall of the rear sliding block.

[0012] Preferably, the outer bottom end of the bolt is inserted into the middle of the top of the mounting plate, and the bottom end of the nut contacts the top of the mounting plate.

[0013] Preferably, the driven bevel gear is fixedly connected to the bottom shaft of the threaded rod, the driven bevel gear and the driving bevel gear are meshed, and the drive end of the servo motor is fixedly connected to the rear shaft of the driving bevel gear.

[0014] Compared with related technologies, the pneumatic riveting machine provided by this utility model has the following advantages: This invention uses a servo motor, bevel gear set, and threaded rod to adjust the height of the carrying column. The servo motor drives the active bevel gear, which in turn drives the driven bevel gear to rotate the threaded rod. With the guidance of the sliding block and connecting block, the carrying column can be raised and lowered stably. Then, with the help of the pressure plate and strong spring, the strong spring pushes the pressure plate down to apply initial pressure to the workpiece surface, ensuring that the working head is aligned with the rivet and pre-drilled hole. Unlike traditional equipment, there is no need to separately start the fixing fixture, which solves the positioning deviation problem caused by the poor coordination between traditional fixtures and spinning, and avoids damage to the workpiece due to excessive clamping force. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a pneumatic riveting machine provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the placement plate. Figure 3 for Figure 1 The diagram shows the structure of the support block. Figure 4 for Figure 2 Enlarged view of point A in the image; Figure 5 for Figure 3 Enlarged view of point B in the image.

[0016] The following are the labeling elements in the diagram: 1. Workbench; 2. Placement plate; 3. Mold placement plate; 4. Assembly plate; 5. Mounting hole; 6. Bolt; 7. Nut; 8. Receiving support block; 9. Controller; 10. Connecting block; 11. Load column; 12. Connecting handle; 13. Drive motor; 14. Working head; 15. Sliding rod; 16. Strong spring; 17. Pressure plate; 18. Through hole; 19. Limiting plate; 20. Sliding hole; 21. Sliding block; 22. Fixed rod; 23. Threaded rod; 24. Movable chamber; 25. Driven bevel gear; 26. Driving bevel gear; 27. Servo motor. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0019] Please see Figures 1 to 5A pneumatic riveting machine includes: a workbench 1, a placement plate 2 fixedly connected to the top of the workbench 1, a placement mold 3 placed in the middle of the top of the placement plate 2, a rivet hole groove provided at the top of the placement mold 3, and assembly plates 4 symmetrically fixedly connected to the outside of the placement mold 3, with mounting holes 5 opened on the opposite sides of the two assembly plates 4. Tightening assembly: A tightening assembly is installed on the inner wall of the mounting hole 5. The tightening assembly includes a bolt 6. The outer side of the bolt 6 contacts the inner wall of the mounting hole 5. A nut 7 is threadedly connected to the outer top of the bolt 6. The outer bottom of the bolt 6 is inserted into the middle of the top of the placement plate 2. The bottom of the nut 7 contacts the top of the assembly plate 4. The top of the plate 2 is symmetrically fixedly connected to the support block 8. The controller 9 is installed on one side of the rear support block 8. The inner walls of the two support blocks 8 are slidably connected to each other. The two connecting blocks 10 are fixedly connected to each other. The inner walls of the top of the two connecting blocks 10 are fixedly connected to each other. The inner wall of the top of the support block 11 is installed with a connecting handle 12. The top of the support block 11 is equipped with a drive motor 13 to provide power. The drive end of the drive motor 13 is fixedly connected to the top of the connecting handle 12. The bottom end of the connecting handle 12 is fixedly connected to a working head 14, which is a component that directly contacts the rivet and applies pressure to rotate it. Multiple sliding rods 15 are slidably connected to the inner wall of the bottom end of the carrying column 11. A strong spring 16 is sleeved on the outside of the sliding rods 15. A pressure plate 17 is fixedly connected to the bottom end of the multiple sliding rods 15 to apply initial pressure and pre-press and fix the workpiece to prevent the workpiece from shifting during subsequent riveting. A through hole 18 is opened at the axis of the pressure plate 17. Multiple sliding holes 20 are opened inside the outer ring of the carrying column 11. A limit plate 19 is slidably connected to the inner wall of the sliding hole 20. The bottom end of the limit plate 19 is fixedly connected to the top end of the sliding rod 15 to ensure the stability of the movement of the sliding rod 15. The sliding block 21 is slidably connected to the inner wall of the receiving support block 8. The adjacent side of the two sliding blocks 21 is fixedly connected to the distant side of the two connecting blocks 10. The interior of the front receiving support block 8 is fixedly connected to a fixing rod 22, and the interior of the rear receiving support block 8 is rotatably connected to a threaded rod 23. The exterior of the fixing rod 22 is slidably connected to the inner wall of the front sliding block 21, and the exterior of the threaded rod 23 is threadedly connected to the inner wall of the rear sliding block 21. The bottom end of the rear receiving support block 8 is provided with a movable chamber 24. The drive assembly is installed inside the movable chamber 24. The drive assembly includes a driven bevel gear 25, the top of which is rotatably connected to the top of the inner wall of the movable chamber 24 to ensure stability. A driving bevel gear 26 is rotatably connected to the rear inner wall of the movable chamber 24. A servo motor 27 is installed on the rear side of the top of the placement plate 2. The top axis of the driven bevel gear 25 is fixedly connected to the bottom axis of the threaded rod 23. The driven bevel gear 25 and the driving bevel gear 26 are meshed. The drive end of the servo motor 27 is fixedly connected to the rear axis of the driving bevel gear 26.

[0020] The working principle of the pneumatic riveting machine provided by this utility model is as follows: First, the operator aligns the workpieces such as plates to be riveted, inserts the rivets into the pre-drilled holes in the workpieces, and places the workpieces in the placement mold 3 on the placement plate 2 at the top of the workbench 1. The mounting holes 5 of the symmetrical assembly plate 4 outside the placement mold 3 are used to initially fix the workpieces with the tightening components. The bolts 6 of the tightening components are inserted into the mounting holes 5 and then connected by the threaded nuts 7 to initially limit the placement mold 3 and the workpieces, so that the workpieces are in a relatively stable initial position on the placement plate 2, in preparation for subsequent precise riveting. When the height of the support column 11 needs to be adjusted to accommodate the riveting requirements of workpieces of different thicknesses, the drive assembly is activated. In the drive assembly, the servo motor 27 rotates, driving the active bevel gear 26 to rotate. Because the active bevel gear 26 meshes with the driven bevel gear 25, and the top of the driven bevel gear 25 is fixed to the bottom of the threaded rod 23, the rotation of the driven bevel gear 25 will cause the threaded rod 23 to rotate within the movable chamber 24 of the receiving block 8. The sliding block 21 in the rear receiving block 8 is threadedly connected to the threaded rod 23, and the sliding block 21 in the front receiving block 8 is slidably connected to the fixed rod 22. When the threaded rod 23 rotates, the rear sliding block 21 moves axially along the threaded rod 23, simultaneously causing the front sliding block 21 to slide along the fixed rod 22. This causes the two connecting blocks 10 to slide on the inner wall of the receiving block 8, ultimately moving the support column 11 up and down for adjustment. When the working head 14 is at a suitable height, it can accurately approach the end of the rivet during subsequent riveting operations. At the same time, the sliding rod 15 on the inner wall of the bottom end of the support column 11, under the action of the strong spring 16, pushes the pressure plate 17 downward. The through hole 18 at the axis of the pressure plate 17 facilitates the working head 14 to pass through and contact the rivet. The pressure plate 17 first contacts the surface of the workpiece, applies initial pressure, and further pre-presses and fixes the workpiece to prevent the workpiece from shifting during subsequent riveting. At this time, the strong spring 16 will be compressed due to the pressure of the pressure plate 17. The limiting plate 19 at the top of the sliding rod 15 slides in the sliding hole 20 on the outer ring of the support column 11 to ensure the stability of the movement of the sliding rod 15. Then the drive motor 13 starts, and its drive end is fixed to the top of the connecting handle 12, driving the connecting handle 12 to rotate. The working head 14 at the bottom end of the connecting handle 12 rotates accordingly, providing rotational power for riveting. As the drive motor 13 continues to drive the working head 14 to rotate, the working head 14 contacts the end of the rivet. Under the combined action of the rotational force and the axial pressure applied by the pressure plate 17, the end of the rivet begins to be upset and deformed in all directions. During the deformation process, the working head 14 continues to rotate and apply pressure. The end of the rivet gradually fills the mold cavity that matches the shape of the rivet head and tightly squeezes the surface of the workpiece, finally forming a rivet head that meets the requirements. This firmly splices two workpieces such as plates together, completing the riveting operation.

[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pneumatic rivet machine characterized by, include: Workbench (1), a placement plate (2) is fixedly connected to the top of the workbench (1), a placement mold (3) is placed in the middle of the top of the placement plate (2), and an assembly plate (4) is symmetrically fixedly connected to the outside of the placement mold (3). Mounting holes (5) are opened on the opposite side of the two assembly plates (4). Tightening assembly; a tightening assembly is installed on the inner wall of the mounting hole (5); The top of the plate (2) is symmetrically fixedly connected to the receiving support block (8). A controller (9) is installed on one side of the rear receiving support block (8). Connecting blocks (10) are slidably connected to the inner walls of the two receiving support blocks (8) on the same side. A carrying column (11) is fixedly connected to the two connecting blocks (10) on the same side. A connecting handle (12) is installed on the inner wall of the top of the carrying column (11). A drive motor (13) is installed on the top of the carrying column (11). A working head (14) is fixedly connected to the bottom of the connecting handle (12). Multiple sliding rods (15) are slidably connected to the inner wall of the bottom end of the load column (11). A strong spring (16) is sleeved on the outside of the sliding rod (15). A pressure plate (17) is fixedly connected to the bottom end of the multiple sliding rods (15). A through hole (18) is opened at the axis of the pressure plate (17). The sliding block (21) is slidably connected to the inner wall of the receiving block (8). The front receiving block (8) is fixedly connected to the inside of the fixed rod (22). The rear receiving block (8) is rotatably connected to the inside of the threaded rod (23). The bottom end of the rear receiving block (8) is provided with a movable chamber (24). The drive assembly is installed inside the active chamber (24).

2. A pneumatic rivet machine according to claim 1, wherein The tightening assembly includes a bolt (6), the outside of which contacts the inner wall of the mounting hole (5), and a nut (7) is threaded onto the outer end of the bolt (6).

3. A pneumatic rivet machine according to claim 1, wherein The drive assembly includes a driven bevel gear (25), the top of which is rotatably connected to the top of the inner wall of the movable chamber (24), and an active bevel gear (26) is rotatably connected to the rear inner wall of the movable chamber (24). A servo motor (27) is installed on the rear side of the top of the placement plate (2).

4. The pneumatic rivet machine of claim 1, wherein, The drive end of the drive motor (13) is fixedly connected to the top of the connecting handle (12).

5. The pneumatic rivet machine of claim 1, wherein, Multiple sliding holes (20) are provided inside the outer ring of the loading column (11). The inner wall of the sliding hole (20) is slidably connected to the limiting plate (19). The bottom end of the limiting plate (19) is fixedly connected to the top end of the sliding rod (15).

6. A pneumatic rivet machine according to claim 1, wherein The two sliding blocks (21) are fixedly connected to each other on the adjacent side and the two connecting blocks (10) on the distant side. The outer side of the fixing rod (22) is slidably connected to the inner wall of the front sliding block (21), and the outer side of the threaded rod (23) is threadedly connected to the inner wall of the rear sliding block (21).

7. A pneumatic riveting machine according to claim 2, characterized in that, The bottom of the bolt (6) is inserted into the top center of the placement plate (2), and the bottom of the nut (7) is in contact with the top of the assembly plate (4).

8. A pneumatic riveting machine according to claim 3, characterized in that, The driven bevel gear (25) is fixedly connected to the bottom shaft of the threaded rod (23), the driven bevel gear (25) is meshed with the driving bevel gear (26), and the drive end of the servo motor (27) is fixedly connected to the rear shaft of the driving bevel gear (26).

Images