Servo rivet pulling device

Abstract

The invention relates to the technical field of rivet pulling, and discloses a servo rivet pulling device which comprises a workbench, and a fixing plate is fixedly connected to the top of the workbench. A first hydraulic rod is started to push a moving plate to move downwards, at the moment, due to the fact that the two sides of the moving plate are hinged to a second connecting rod through connecting rivets, when the moving plate moves downwards, the hinged state of a first connecting rod and a third connecting rod can be driven to be changed, and the moving plate moves downwards; the moving distance of a first hydraulic rod is limited through the length of a first connecting rod, the length of a second connecting rod and the length of a third connecting rod, the situation that the moving distance deviates, riveting holes of a plate are damaged, and the riveting effect is affected is avoided, and the length of the first connecting rod, the second connecting rod and the third connecting rod is fixed through the length. The downward moving distance of the first hydraulic rod pushing the moving plate is directly limited, and the problem of excessive or insufficient moving is completely eradicated.

Description

Technical Field

[0001] This application relates to the field of riveting technology, and more particularly to a servo riveting device. Background Technology

[0002] A rivet is a type of rivet used for single-sided riveting, requiring a special tool for application. This tool is typically a rivet gun, which can be manual, electric, or pneumatic. These rivets are particularly suitable for riveting applications where ordinary rivets (which require riveting from both sides) are impractical, and are therefore widely used in construction, automobiles, ships, aircraft, machinery, electrical appliances, furniture, and other products.

[0003] Existing riveting equipment mostly uses simple hydraulic drive or electrical control to control the riveting stroke. These control methods are easily affected by external factors, leading to deviations. For example, hydraulic systems may experience unstable thrust due to oil pressure fluctuations or wear of hydraulic components, while electrical control may experience stroke loss due to signal delays or voltage fluctuations. When the riveting stroke is too large, it can easily cause extrusion deformation and edge damage to the riveting holes of the sheet metal, resulting in the direct scrapping of the sheet metal. When the stroke is too small, the collar and the riveting hole are not fully aligned, resulting in insufficient riveting tightness. Subsequent workpieces are prone to collar failure under stress or vibration. Firstly, there's the issue of loosening. Secondly, traditional collar feeding often relies on manual feeding or simple conveyor devices, resulting in extremely low feeding efficiency and difficulty adapting to the continuous production rhythm of assembly lines, significantly slowing down the overall production progress. Simple conveyor devices often suffer from disordered feeding and component interference: on the one hand, the lack of segmented guiding structures during collar conveying makes them prone to stacking and misalignment, preventing collars from being accurately delivered to the riveting station, requiring machine stoppages for manual adjustments, increasing wasted time; on the other hand, when the feeding component retracts after ejecting the collar, it is highly susceptible to collisions or jamming with subsequent collars. This not only causes collar deformation and wear on the feeding structure but also requires frequent machine stops to adjust the collar position and feeding component status, severely disrupting the continuity of riveting operations, further reducing production efficiency, and increasing equipment maintenance costs and failure rates. Summary of the Invention

[0004] This application proposes a servo riveting device with the advantage of better riveting effect, which solves the problem of damage to the riveting hole caused by changes in the riveting formation in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a servo riveting device, including a worktable, a fixed plate fixedly connected to the top of the worktable, support columns fixedly connected to the top of both sides of the fixed plate, a support plate fixedly connected to the top of the support columns, and a lifting component provided on one side of the support plate; The top of the fixing plate is provided with a riveting plate, and the top two sides of the riveting plate are provided with riveting components. A third motor is fixedly connected to the bottom of the workbench, and a discharge assembly is provided on the top of the third motor. The top of the workbench is provided with a first feeding block, and the interior of the first feeding block is provided with a lifting component.

[0006] Preferably, the lifting assembly includes a first hydraulic rod, which is fixedly connected to the top of the support plate. The output end of the first hydraulic rod is fixedly connected to a first rotating shaft, and one end of the first rotating shaft is fixedly connected to a movable plate. Limiting posts are fixedly connected to both sides of the bottom of the support plate, and the limiting posts are movably sleeved inside the movable plate.

[0007] Preferably, the lifting assembly includes a first connecting plate, which is fixedly connected to the bottom of the support plate. A first connecting rod is provided on both sides of the first connecting plate, a second connecting rod is provided on one side of the first connecting rod, and a third connecting rod is provided on one side of the second connecting rod. Connecting rivets are provided at the connection points of the first connecting rod, the second connecting rod, and the third connecting rod, which are hinged together by the connecting rivets.

[0008] Preferably, the lifting assembly includes a second connecting plate, which is disposed on one side of the third connecting rod. The third connecting rod is hinged to the second connecting plate by connecting rivets, and the rivet plate is fixedly connected to the second connecting plate.

[0009] Preferably, the riveting assembly includes a second motor, which is fixedly connected to the top of the riveting plate, and a riveting block is fixedly connected to the bottom of the riveting plate. A nail core is fixedly connected to the output end of the second motor, and the nail core is movably sleeved inside the riveting block. The riveting block and the nail core are arranged on the same axis.

[0010] Preferably, the discharge assembly includes a feeding plate, which is fixedly connected to the output end of a third motor. A rotating column is fixedly connected to the top of the feeding plate, and a discharge plate is fixedly connected to one side of the rotating column.

[0011] Preferably, the discharge assembly includes multiple sets of collars, all of which are disposed inside the first feeding block and abut against each other. The first feeding block has a moving groove inside, and the discharge plate is slidably connected inside the moving groove. One side of the discharge plate abuts against one side of the collar.

[0012] Preferably, the lifting assembly includes an electric push rod, which is fixedly connected to the bottom of the worktable. The output end of the electric push rod is fixedly connected to a second feeding block. The first feeding block has a first discharge groove inside. The top of the worktable is fixedly connected to a feeding plate, which has a second discharge groove inside. The positions of the first discharge groove and the feeding plate are on the same axis as the second feeding block.

[0013] Preferably, the first feeding block is divided into a preparation section, a discharge section and a riveting section. The material in the preparation section is pushed by the discharge plate to move in the discharge section and to the discharge section for riveting.

[0014] Preferably, the length and width of the first discharge trough are both greater than the length and width of the second feeding block, one side of the second feeding block is triangular, and the triangular side of the second feeding block abuts against the collar.

[0015] The beneficial effects of this invention are as follows: 1. This invention pushes a movable plate downward by activating a first hydraulic rod. Since the two sides of the movable plate are hinged to a second connecting rod via connecting rivets, the downward movement of the movable plate changes the hinge state of the first and third connecting rods. The lengths of the first, second, and third connecting rods limit the movement distance of the first hydraulic rod, preventing deviations that could damage the riveting holes in the plate and affect the riveting effect. Furthermore, the fixed lengths of the first, second, and third connecting rods directly limit the downward movement of the movable plate by the first hydraulic rod, preventing excessive or insufficient movement. Simultaneously, it ensures consistent contact force and depth between the collar and the riveting hole, resulting in uniform riveting tightness and preventing loosening or excessive compression.

[0016] 2. This invention uses a third motor to drive a feeding plate to rotate. The rotation of the feeding plate drives a rotating column, which in turn drives a discharge plate. The discharge plate then moves a collar inside the first feeding block, moving the collar from the preparatory and discharge sections to the riveting section. At this point, the collar abuts against one side of the first feeding block. Then, an electric push rod pushes the second feeding block to eject the collar. The collar is now positioned in the central groove of the second feeding block, and one side of the second feeding block abuts against another set of collars. This prevents the second feeding block from being affected by the collar during its retraction. During operation, the mechanical transmission structure driven by the third motor works in tandem to ensure the orderly transport of the collar from the preparatory to the riveting section. The design of the second feeding block abutting against the next set of collars when ejecting the collar prevents interference during retraction. Continuous feeding is possible without additional adjustments, effectively reducing downtime and improving work efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0018] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a cross-sectional view of the feed plate of the present invention; Figure 5 This is a cross-sectional view of the fixing plate of the present invention; Figure 6 This is a schematic diagram of the structure of the first feeding block of the present invention; Figure 7 This is a schematic diagram of the feeding assembly structure of the present invention; Figure 8 This is a schematic diagram of the structure of the second feeding block of the present invention.

[0019] The components are as follows: 1. Workbench; 2. Fixed plate; 3. Support column; 4. Support plate; 5. First hydraulic rod; 6. First rotating shaft; 7. Moving plate; 8. Limiting column; 9. First connecting plate; 10. First connecting rod; 11. Second connecting rod; 12. Third connecting rod; 13. Second connecting plate; 14. Riveting plate; 15. Second motor; 16. Riveting block; 17. Rivet core; 18. Third motor; 19. Feeding plate; 20. Rotating column; 21. Discharge plate; 22. First feeding block; 23. Collar; 24. Moving groove; 25. Electric push rod; 26. Second feeding block; 27. First discharge groove; 28. Feeding plate; 29. ​​Second discharge groove; 30. Connecting rivet. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figure 1-8 This invention provides a servo riveting device, including a worktable 1, a fixed plate 2 fixedly connected to the top of the worktable 1, support columns 3 fixedly connected to the top of both sides of the fixed plate 2, support plates 4 fixedly connected to the top of the support columns 3, and a lifting component provided on one side of the support plate 4. The top of the fixing plate 2 is provided with a riveting plate 14, and the top two sides of the riveting plate 14 are provided with riveting components. A third motor 18 is fixedly connected to the bottom of the workbench 1, and a discharge assembly is provided on the top of the third motor 18; The top of the workbench 1 is provided with a first feeding block 22, and the inside of the first feeding block 22 is provided with a lifting component.

[0022] The lifting assembly includes a first hydraulic rod 5, which is fixedly connected to the top of the support plate 4. A first rotating shaft 6 is fixedly connected to the output end of the first hydraulic rod 5. A movable plate 7 is fixedly connected to one end of the first rotating shaft 6. Limiting posts 8 are fixedly connected to both sides of the bottom of the support plate 4, and the limiting posts 8 are movably sleeved inside the movable plate 7. The lifting assembly also includes a first connecting plate 9, which is fixedly connected to the bottom of the support plate 4. First connecting rods 10 are provided on both sides of the first connecting plate 9. A second connecting rod 11 is provided on one side, and a third connecting rod 12 is provided on one side of the second connecting rod 11. A connecting rivet 30 is provided at the connection point of the first connecting rod 10, the second connecting rod 11 and the third connecting rod 12. The first connecting rod 10, the second connecting rod 11 and the third connecting rod 12 are hinged by the connecting rivet 30. The lifting assembly includes a second connecting plate 13, which is provided on one side of the third connecting rod 12. The third connecting rod 12 is hinged to the second connecting plate 13 by the connecting rivet 30. A riveting plate 14 is fixedly connected to the second connecting plate 13. By activating the first hydraulic rod 5, the movable plate 7 is pushed downwards. Since the two sides of the movable plate 7 are hinged to the second connecting rod 11 through the connecting rivets 30, the hinge state of the first connecting rod 10 and the third connecting rod 12 changes when the movable plate 7 moves downwards. The length of the first connecting rod 10, the second connecting rod 11, and the third connecting rod 12 limits the movement distance of the first hydraulic rod 5, preventing deviation in movement distance that could damage the riveting holes of the plate and affect the riveting effect. Furthermore, the fixed length of the first connecting rod 10, the second connecting rod 11, and the third connecting rod 12 directly limits the downward movement distance of the movable plate 7 pushed by the first hydraulic rod 5, preventing excessive or insufficient movement. At the same time, it ensures that the engagement force and depth between the collar 23 and the riveting hole are consistent, making the riveting tightness uniform and preventing loosening or excessive compression.

[0023] The riveting assembly includes a second motor 15, which is fixedly connected to the top of the riveting plate 14. A riveting block 16 is fixedly connected to the bottom of the riveting plate 14. A nail core 17 is fixedly connected to the output end of the second motor 15. The nail core 17 is movably sleeved inside the riveting block 16. The riveting block 16 and the nail core 17 are arranged on the same axis. By starting the second motor 15, the nail core 17 is rotated, so that the nail core 17 and the collar 23 are engaged. After the nail core 17 and the collar 23 are engaged, the first hydraulic rod 5 is used to retract and complete the riveting of the plate.

[0024] The discharge assembly includes a feeding plate 19, which is fixedly connected to the output end of the third motor 18. A rotating column 20 is fixedly connected to the top of the feeding plate 19, and a discharge plate 21 is fixedly connected to one side of the rotating column 20. The discharge assembly includes multiple sets of collars 23, which are all disposed inside the first feeding block 22. The multiple sets of collars 23 abut against each other. A moving groove 24 is provided inside the first feeding block 22. The discharge plate 21 is slidably connected inside the moving groove 24, and one side of the discharge plate 21 abuts against one side of the collar 23. By starting the third motor 18, the feeding plate 19 is driven to rotate. The rotation of the feeding plate 19 drives the rotating column 20 to rotate. The rotation of the rotating column 20 drives the discharge plate 21 to rotate. The rotation of the discharge plate 21 drives the collar 23 to move inside the first feeding block 22, so that the collar 23 moves from the preparatory section and the discharge section of the first feeding block 22 to the riveting section, thus completing the discharge.

[0025] The lifting assembly includes an electric push rod 25, which is fixedly connected to the bottom of the workbench 1. The output end of the electric push rod 25 is fixedly connected to a second feeding block 26. The first feeding block 22 has a first discharge groove 27 inside. The top of the workbench 1 is fixedly connected to a feeding plate 28, which has a second discharge groove 29 inside. The positions of the first discharge groove 27 and the feeding plate 28 are on the same axis as the second feeding block 26. The first feeding block 22 is divided into a preparation section, a discharge section and a riveting section. The material in the preparation section is pushed by the discharge plate 21 to move in the discharge section and to the discharge section for riveting. By starting the third motor 18, the feeding plate 19 is driven to rotate. The rotation of the feeding plate 19 drives the rotating column 20 to rotate. The rotation of the rotating column 20 drives the discharge plate 21 to rotate. The rotation of the discharge plate 21 drives the collar 23 to move inside the first feeding block 22, so that the collar 23 moves from the preparatory section and the discharge section of the first feeding block 22 to the riveting section.

[0026] The length and width of the first discharge trough 27 are both greater than the length and width of the second feeding block 26. One side of the second feeding block 26 is triangular, and the triangular side of the second feeding block 26 abuts against the collar 23.

[0027] Working principle: During operation, the plates to be riveted are conveyed to the top of the feed plate 28 via a conveying device. Positioning plates on both sides of the feed plate 28 limit and fix its position. When the plate reaches the appropriate position, the third motor 18 is activated to rotate the feeding plate 19. The rotation of the feeding plate 19 drives the rotating column 20 to rotate, which in turn drives the discharge plate 21 to rotate. The rotation of the discharge plate 21 causes the collar 23 to move inside the first feeding block 22, moving it from the preparatory section and discharge section of the first feeding block 22 to the riveting section. At this point, the collar 23 abuts against one side of the inside of the first feeding block 22. Then, the electric pusher is activated... Rod 25 pushes the second feeding block 26 to push out the collar 23. At this time, the collar 23 will be in the groove in the middle of the second feeding block 26, and one side of the second feeding block 26 will abut against another set of collars 23 to avoid the second feeding block 26 being affected by the collar 23 after pushing out the collar 23. During the operation, the mechanical transmission structure driven by the third motor 18 is linked to realize the orderly conveying of the collar 23 from the preparation to the riveting section. The design of the second feeding block 26 abutting against the next set of collars 23 when pushing out the collar 23 avoids interference during the retraction. It can continuously feed material without additional adjustment, which can effectively reduce downtime and improve work efficiency. After the collar 23 is ejected by the ejector assembly, the first hydraulic rod 5 is activated to push the moving plate 7 downward. At this time, since the two sides of the moving plate 7 are hinged to the second connecting rod 11 through the connecting rivets 30, the hinge state of the first connecting rod 10 and the third connecting rod 12 will change when the moving plate 7 moves downward. The length of the first connecting rod 10, the second connecting rod 11 and the third connecting rod 12 limits the movement distance of the first hydraulic rod 5, avoiding deviation in the movement distance, which could damage the riveting hole of the plate and affect the riveting effect. Moreover, the first connecting rod 10, the second connecting rod 11 and the third connecting rod 12 directly limit the downward movement distance of the first hydraulic rod 5 by their fixed length, preventing excessive or insufficient movement. At the same time, it can ensure that the engagement force and depth between the collar 23 and the riveting hole are consistent, so that the riveting tightness is uniform and avoids loosening or excessive compression. Since the nail core 17 and the collar 23 are on the same axis as the riveting hole of the plate, after the lifting assembly descends, the second motor 15 is started to drive the nail core 17 to rotate, so that the nail core 17 and the collar 23 cooperate. After the nail core 17 and the collar 23 are cooperated, the first hydraulic rod 5 is used to retract and complete the riveting of the plate.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A servo riveting device, comprising a worktable (1), characterized in that, The workbench (1) is fixedly connected to a fixed plate (2) on the top. Support columns (3) are fixedly connected to the top of both sides of the fixed plate (2). Support plates (4) are fixedly connected to the top of the support columns (3). A lifting assembly is provided on one side of the support plate (4). The top of the fixing plate (2) is provided with a riveting plate (14), and the top two sides of the riveting plate (14) are provided with riveting components. The bottom of the workbench (1) is fixedly connected to a third motor (18), and the top of the third motor (18) is provided with a discharge assembly. The top of the workbench (1) is provided with a first feeding block (22), and the interior of the first feeding block (22) is provided with a lifting component.

2. The servo riveting device according to claim 1, characterized in that, The lifting assembly includes a first hydraulic rod (5), which is fixedly connected to the top of the support plate (4). The output end of the first hydraulic rod (5) is fixedly connected to a first rotating shaft (6), and one end of the first rotating shaft (6) is fixedly connected to a moving plate (7). Limiting posts (8) are fixedly connected to both sides of the bottom of the support plate (4), and the limiting posts (8) are movably sleeved inside the moving plate (7).

3. The servo riveting device according to claim 2, characterized in that, The lifting assembly includes a first connecting plate (9), which is fixedly connected to the bottom of the support plate (4). A first connecting rod (10) is provided on both sides of the first connecting plate (9), a second connecting rod (11) is provided on one side of the first connecting rod (10), and a third connecting rod (12) is provided on one side of the second connecting rod (11). A connecting rivet (30) is provided at the connection point of the first connecting rod (10), the second connecting rod (11), and the third connecting rod (12). The first connecting rod (10), the second connecting rod (11), and the third connecting rod (12) are hinged by the connecting rivet (30).

4. A servo riveting device according to claim 3, characterized in that, The lifting assembly includes a second connecting plate (13), which is disposed on one side of the third connecting rod (12). The third connecting rod (12) is hinged to the second connecting plate (13) by connecting rivets (30), and the riveting plate (14) is fixedly connected to the second connecting plate (13).

5. A servo riveting device according to claim 4, characterized in that, The riveting assembly includes a second motor (15), which is fixedly connected to the top of the riveting plate (14). A riveting block (16) is fixedly connected to the bottom of the riveting plate (14). A nail core (17) is fixedly connected to the output end of the second motor (15). The nail core (17) is movably sleeved inside the riveting block (16). The riveting block (16) and the nail core (17) are arranged on the same axis.

6. A servo riveting device according to claim 5, characterized in that, The discharge assembly includes a feeding plate (19), which is fixedly connected to the output end of the third motor (18). A rotating column (20) is fixedly connected to the top of the feeding plate (19), and a discharge plate (21) is fixedly connected to one side of the rotating column (20).

7. A servo riveting device according to claim 6, characterized in that, The discharge assembly includes multiple sets of collars (23), all of which are disposed inside the first feeding block (22). The multiple sets of collars (23) abut against each other. The first feeding block (22) has a moving groove (24) inside. The discharge plate (21) is slidably connected inside the moving groove (24). One side of the discharge plate (21) abuts against one side of the collar (23).

8. A servo riveting device according to claim 7, characterized in that, The lifting assembly includes an electric push rod (25), which is fixedly connected to the bottom of the workbench (1). The output end of the electric push rod (25) is fixedly connected to a second feeding block (26). The first feeding block (22) has a first discharge groove (27) inside. The top of the workbench (1) is fixedly connected to a feeding plate (28), which has a second discharge groove (29) inside. The positions of the first discharge groove (27) and the feeding plate (28) are on the same axis as the second feeding block (26).

9. A servo riveting device according to claim 8, characterized in that, The first feeding block (22) is divided into a preparation section, a discharge section and a riveting section. The material in the preparation section is pushed by the discharge plate (21) to move in the discharge section and to the discharge section for riveting.

10. A servo riveting device according to claim 9, characterized in that, The length and width of the first discharge trough (27) are both greater than the length and width of the second feeding block (26). One side of the second feeding block (26) is triangular, and the triangular side of the second feeding block (26) abuts against the collar (23).

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