A pneumatic riveting device

Abstract

The present invention relates to the technical field of riveting equipment, and particularly to a pneumatic riveting device, which includes a force-increasing structure assembly, a transmission structure assembly and a riveting structure assembly. The force-increasing structure assembly includes a cylinder, a guiding mechanism, a sliding plate, a lifting block, a force-increasing rotating block and a strengthening block. The sliding plate is fixedly connected to the piston rod of the cylinder and slides up and down along the guiding mechanism. The force-increasing rotating block is hinged above the cylinder. The lifting block is installed at the front end of the force-increasing rotating block and placed on the sliding plate. The strengthening block is fixedly installed at the rear end of the force-increasing rotating block, and the front end force arm of the force-increasing rotating block is greater than the rear end force arm. The transmission structure assembly is driven by the strengthening block to move up and down along the guiding mechanism. The riveting structure assembly is installed above the force-increasing structure assembly. The riveting structure assembly is provided with a riveting head, and the riveting head is driven by the transmission structure assembly to move up and down. The device provided by the present invention has a simple structure, a small volume, a light weight, a high degree of integration, low power consumption and noise, and high reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of riveting devices, and in particular to a pneumatic riveting device. Background Art

[0002] Currently, for the stamping of sheet metal parts and the fixing methods of the outer frames and joints of many products in the electronics industry, large stamping equipment or riveting equipment is mainly used. Such equipment usually directly drives the riveting head to move up and down by a cylinder, with large volume, heavy weight, high operating power, and high noise. At the same time, due to large vibrations during operation, the failure rate of the equipment is relatively high. And many small enterprises or production workshops do not have high-power power supplies or 380V power supplies, and thus cannot carry out effective production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a pneumatic riveting device with simple structure, small volume, light weight, high degree of integration, low power consumption and noise, and high reliability.

[0004] The present invention is realized by the following technical solutions:

[0005] A pneumatic riveting device includes a force-increasing structure assembly, a transmission structure assembly, and a riveting structure assembly. The force-increasing structure assembly includes a cylinder, a guiding mechanism, a sliding plate, a lifting block, a force-increasing rotating block, and a strengthening block. The sliding plate is fixedly connected to the piston rod of the cylinder and slides up and down along the guiding mechanism. The force-increasing rotating block is hinged above the cylinder. The lifting block is installed at the front end of the force-increasing rotating block and is placed on the sliding plate. The strengthening block is fixedly installed at the rear end of the force-increasing rotating block, and the front end force arm of the force-increasing rotating block is greater than the rear end force arm. The transmission structure assembly is driven by the strengthening block to move up and down along the guiding mechanism. The riveting structure assembly is installed above the force-increasing structure assembly, and the riveting structure assembly is provided with a riveting head, and the riveting head is driven by the transmission structure assembly to move up and down.

[0006] Further, the force-increasing structure assembly further includes a bottom plate and a top plate. The guiding mechanism includes two front guiding columns and two rear guiding columns. The cylinder, the two front guiding columns, and the lower ends of the two rear guiding columns are all fixedly installed on the bottom plate. The top plate is fixedly installed at the tops of the two front guiding columns and the two rear guiding columns. The force-increasing rotating block is hinged to the lower surface of the top plate, and the sliding plate slides up and down along the two front guiding columns.

[0007] Further, the transmission structure assembly includes a connecting shaft, two connecting plates, and a pressing block. The two connecting plates pass through the top plate and move up and down along the rear guiding columns. The connecting shaft is fixedly installed between the lower parts of the two connecting plates, and the pressing block is fixedly installed at the top between the two connecting plates.

[0008] Optimized, a guiding and fixing block is fixedly installed between the two connecting plates. Two guiding post relief holes are formed in the guiding and fixing block, and linear bearings are respectively installed at the two guiding post relief holes. The two rear guiding posts respectively pass through the corresponding linear bearings.

[0009] Optimized, there are two guiding and fixing blocks.

[0010] Furthermore, a rolling member is sleeved on the connecting shaft.

[0011] Furthermore, the riveting structure assembly is further provided with a positioning guide rail, two riveting guiding shafts, a riveting sliding plate and a riveting head adjusting mechanism. The positioning guide rail and the two riveting guiding shafts are fixedly installed on the upper surface of the top plate. The riveting sliding plate slides up and down along the riveting guiding shafts, and the riveting head adjusting mechanism drives the riveting head to move up and down.

[0012] Optimized, first return springs are respectively sleeved on the two rear guiding posts between the guiding and fixing block and the bottom plate.

[0013] Furthermore, second return springs are respectively sleeved on the two riveting guiding shafts.

[0014] Advantages of the Invention

[0015] A pneumatic riveting device protected by the present invention has the following advantages: The air cylinder can be driven by a low-pressure solenoid valve, and the operating power of the whole machine is relatively small; The equipment runs with low noise, only the sound of the air cylinder exhausting; Adopting the force-increasing principle of the lever, the riveting force can be increased by more than 13 times, the operation is stable, and the reliability is high. At the same time, it can be designed and optimized according to the actual use situation to improve the riveting ability; Due to the small force arm of the lever and the high integration degree, the whole machine structure is very compact, and the manufacturing cost and the use cost are very low. At the same time, the equipment is easy to load, unload and handle; Powered by 220V, it can meet the use requirements in most domestic environments. Brief Description of the Drawings

[0016] Figure 1 It is the front view structural schematic diagram of the present invention;

[0017] Figure 2 It is the rear view structural schematic diagram of the present invention;

[0018] Figure 3 It is the structural schematic diagram of the force-increasing structure assembly;

[0019] Figure 4 It is the structural schematic diagram of the transmission structure assembly;

[0020] Figure 5 It is the structural schematic diagram of the riveting structure assembly;

[0021] In the figure: 1. Force-increasing structure assembly, 2. Transmission structure assembly, 3. Riveting structure assembly, 4. Cylinder, 5. Sliding plate, 6. Lifting block, 7. Front guide post, 8. Force-increasing rotating block, 9. Reinforcing block, 10. Rear guide post, 11. Guide fixing block, 12. Linear bearing, 13. Connecting shaft, 14. Rolling component, 15. Connecting plate, 16. Pressing block, 17. Riveting guide shaft, 18. Riveting sliding plate, 19. Riveting head, 20. Adjusting bolt, 21. First return spring, 22. Hinge shaft, 23. Positioning guide rail, 24. Top plate, 25. Bottom plate, 26. Second return spring. Detailed implementation mode

[0022] A pneumatic riveting device includes a force-increasing structure assembly 1, a transmission structure assembly 2 and a riveting structure assembly 3. The force-increasing structure assembly includes a cylinder 4, a guiding mechanism, a sliding plate 5, a lifting block 6, a force-increasing rotating block 8 and a reinforcing block 9. The sliding plate is fixedly connected to the piston rod of the cylinder and slides up and down along the guiding mechanism. The force-increasing rotating block is hinged above the cylinder through a hinge shaft 22. The lifting block is installed at the front end of the force-increasing rotating block and placed on the sliding plate. The lifting block can be a rolling component, such as a rolling bearing or a roller, etc. When the sliding plate rises or falls, the friction between the lifting block and the sliding plate can be reduced, realizing the smooth rotation of the force-increasing rotating block, and making the operation of the force-increasing structure assembly more stable and reliable.

[0023] The reinforcing block is fixedly installed at the rear end of the force-increasing rotating block, and the front arm of the force-increasing rotating block is longer than the rear arm. The reinforcing block and the force-increasing rotating block can be connected in various ways such as clamping, bolt fixing or welding. The transmission structure assembly is driven by the reinforcing block to move up and down along the guiding mechanism. The riveting structure assembly is installed above the force-increasing structure assembly. The riveting structure assembly is provided with a riveting head 19, and the riveting head is driven by the transmission structure assembly to move up and down.

[0024] Through the setting of the force-increasing structure assembly, the front arm of the force-increasing rotating block is longer than the rear arm, so that the pressure finally acting on the riveting head can be increased several times. Specifically, the corresponding arm ratio can be set according to specific requirements, thereby improving the riveting ability without increasing the pressure of the cylinder, making the manufacturing cost and use cost of the equipment very low. At the same time, the arm of the equipment lever is small and the integration degree is relatively high, so the overall structure of the machine is very compact, and the equipment is easy to load, unload and carry. And the cylinder pressure is relatively small, and a low-pressure solenoid valve can be used to drive it. The operating power of the whole machine is relatively small, the noise is relatively low, and it can be powered by 220V, which can meet the use requirements in most domestic production environments.

[0025] Further, the force - increasing structure assembly further includes a bottom plate 25 and a top plate 24. The guiding mechanism includes two front guiding columns 7 and two rear guiding columns 10. The cylinder, the two front guiding columns, and the lower ends of the two rear guiding columns are all fixedly installed on the bottom plate, and the top plate is fixedly installed at the tops of the two front guiding columns and the two rear guiding columns. The force - increasing rotating block is hinged to the lower surface of the top plate. The sliding plate slides up and down along the two front guiding columns. The force - increasing structure assembly further includes a bottom plate and a top plate. The whole set of equipment is integrated on the bottom plate and the top plate, with a relatively high integration degree, a relatively small volume, easy to load, unload and carry. And two front guiding columns are provided, and both ends of the sliding plate can be sleeved on the two front guiding columns and connected by bearings, making the operation of the sliding plate more stable and reliable.

[0026] Further, the transmission structure assembly includes a connecting shaft 13, two connecting plates 15 and a pressing block 16. The two connecting plates pass through the top plate and move up and down along the rear guiding columns. The connecting shaft is fixedly installed below between the two connecting plates, and the pressing block is fixedly installed above between the two connecting plates.

[0027] When the cylinder acts and the strengthening block of the force - increasing structure assembly presses down, after pressing on the connecting shaft, it will drive the whole transmission structure assembly to move downward along the rear guiding column, so that the pressing block generates a large downward pressure, driving the riveting head of the riveting structure assembly to move downward to complete the riveting work of the component, thereby improving the riveting ability of the equipment. And the structure of the transmission structure assembly is relatively simple, with a high integration degree and stable and reliable operation.

[0028] Optimally, a guiding and fixing block 11 is fixedly installed between the two connecting plates. Two guiding - column clearance holes are opened on the guiding and fixing block, and linear bearings 12 are respectively installed at the two guiding - column clearance holes. The two rear guiding columns respectively pass through the corresponding linear bearings. The setting of the guiding and fixing block and the linear bearings enables the transmission structure assembly to transmit power more stably and reliably.

[0029] Optimally, the guiding and fixing block is in two pieces, making the operation of the transmission structure assembly more stable and reliable.

[0030] Further, a rolling component 14 is sleeved on the connecting shaft. The rolling component can be a rolling bearing or other rolling components, which can reduce the friction between the strengthening block and the connecting shaft during the rotation process of the strengthening block, realize the smooth rotation and pressing down of the strengthening block, and make the transmission of the pressure more reliable.

[0031] Further, the riveting structure assembly further includes a positioning guide rail 23, two riveting guiding shafts 17, a riveting sliding plate 18 and a riveting - head adjusting mechanism. The positioning guide rail and the two riveting guiding shafts are fixedly installed on the upper surface of the top plate. The riveting sliding plate slides up and down along the riveting guiding shafts, and the riveting - head adjusting mechanism drives the riveting head to move up and down.

[0032] During the riveting operation, the components to be riveted are positioned and fixed through the positioning guide rails. Under the action of the force-increasing structure assembly, the pressing block of the transmission structure assembly moves downward, transmitting the pressure of the force-increasing structure assembly to the riveting head of the riveting structure assembly to complete the riveting operation of the components. Due to the arrangement of the two riveting guide shafts and the riveting sliding plate, the operation of the riveting sliding plate is relatively stable and reliable, thus driving the smooth operation of the riveting head and ensuring the riveting quality.

[0033] Specifically, the riveting head adjustment mechanism can adopt a screw mechanism. The adjusting bolt 20 passes through the riveting sliding plate, and a nut sleeve (not shown) is installed at the lower end of the screw rod. Both ends of the nut sleeve can be slidably connected to the riveting sliding plate. The riveting head 19 is fixedly installed at the lower end of the nut sleeve. When the adjusting bolt is rotated, the nut sleeve moves up and down along the adjusting bolt, and the height of the riveting head can be adjusted to meet the riveting requirements of different components. Both ends of the nut sleeve are slidably connected to the riveting sliding plate to prevent the nut sleeve from rotating during the rotation of the adjusting bolt.

[0034] Optimally, first return springs 21 are respectively sleeved between the guiding fixed blocks and the bottom plate on the two rear guiding columns. When the air cylinder retracts, the force-increasing rotating block rotates in the reverse direction, the reinforcing block separates from the connecting shaft, and the transmission structure assembly loses pressure. Under the restoring force of the first return spring, it can automatically move upward and reset.

[0035] Furthermore, second return springs 26 are respectively sleeved on the two riveting guide shafts. When the air cylinder retracts, the transmission structure assembly loses pressure. Under the restoring force of the first return spring, it can automatically move upward and reset, so that the riveting structure assembly loses pressure and automatically moves upward and resets under the restoring force of the second return spring.

[0036] The specific implementation process is as follows:

[0037] 1. Push the components to be riveted along the positioning guide rail under the riveting head;

[0038] 2. After starting the equipment, the piston rod of the air cylinder moves upward, driving the sliding plate to move upward along the front guiding shaft;

[0039] 3. The lifting block rolls on the sliding plate, and at the same time, the force-increasing rotating block rotates around the hinge shaft;

[0040] 4. When the force-increasing rotating block rotates, the bottom of the reinforcing block presses the rolling component on the connecting shaft to move downward. At the same time, the connecting shaft drives the connecting plate to move downward;

[0041] 5. The pressing block presses the adjusting bolt downward; the riveting sliding plate moves downward along the riveting guide shaft;

[0042] 6. The riveting head moves downward to complete the riveting operation of the product;

[0043] 7. The air cylinder retracts. Under the action of the second return spring, the riveting sliding plate returns to its original position along the riveting guide shaft, and the transmission structure assembly returns to its original position under the action of the first return spring, completing one riveting process.

[0044] In summary, a pneumatic riveting device protected by the present invention has a simple structure, small size, light weight, high integration level, low power consumption and noise, and high reliability.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pneumatic riveting device, characterized in that, It includes a force - increasing structure assembly, a transmission structure assembly and a riveting structure assembly. The force - increasing structure assembly includes a cylinder, a guiding mechanism, a sliding plate, a lifting block, a force - increasing rotating block and a strengthening block. The sliding plate is fixedly connected to the piston rod of the cylinder and slides up and down along the guiding mechanism. The force - increasing rotating block is hinged above the cylinder. The lifting block is installed at the front end of the force - increasing rotating block and placed on the sliding plate. The strengthening block is fixedly installed at the rear end of the force - increasing rotating block, and the front - end force arm of the force - increasing rotating block is greater than the rear - end force arm. The transmission structure assembly is driven by the strengthening block to move up and down along the guiding mechanism. The riveting structure assembly is installed above the force - increasing structure assembly. The riveting structure assembly is provided with a riveting head, and the riveting head is driven by the transmission structure assembly to move up and down. The force - increasing structure assembly further includes a bottom plate and a top plate. The guiding mechanism includes two front guiding columns and two rear guiding columns. The cylinder, the two front guiding columns and the lower ends of the two rear guiding columns are all fixedly installed on the bottom plate. The top plate is fixedly installed at the tops of the two front guiding columns and the two rear guiding columns. The force - increasing rotating block is hinged to the lower surface of the top plate. The sliding plate slides up and down along the two front guiding columns. The transmission structure assembly includes a connecting shaft, two connecting plates and a pressing block. The two connecting plates pass through the top plate and move up and down along the rear guiding columns. The connecting shaft is fixedly installed at the lower part between the two connecting plates. The pressing block is fixedly installed at the top between the two connecting plates. A guiding and fixing block is fixedly installed between the two connecting plates. Two guiding - column relief holes are opened on the guiding and fixing block, and linear bearings are respectively installed at the two guiding - column relief holes. The two rear guiding columns respectively pass through the corresponding linear bearings. A rolling component is sleeved on the connecting shaft.

2. The pneumatic riveting device according to claim 1, characterized in that, The guiding and fixing block is in two pieces.

3. A pneumatic riveting device according to claim 1, characterized in that, The riveting structure assembly further includes a positioning guide rail, two riveting guiding shafts, a riveting sliding plate and a riveting - head adjusting mechanism. The positioning guide rail and the two riveting guiding shafts are fixedly installed on the upper surface of the top plate. The riveting sliding plate slides up and down along the riveting guiding shafts. The riveting - head adjusting mechanism drives the riveting head to move up and down.

4. A pneumatic riveting device according to claim 1, characterized in that, First return springs are respectively sleeved on the two rear guiding columns between the guiding and fixing block and the bottom plate.

5. The pneumatic riveting device according to claim 3, characterized in that, Second return springs are respectively sleeved on the two riveting guiding shafts.

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