A riveting apparatus for processing a rivet nut

Abstract

This invention discloses a riveting device for processing rivet nuts, including a machine base and a riveting assembly mounted on the machine base. The riveting assembly includes a riveting body, riveting plates disposed at both ends of the riveting body, a plurality of circumferentially spaced and slidably mounted sliding forming plates on the riveting plates, and a driving structure for driving the sliding forming plates to move closer together. The riveting plates form a riveting interface for inserting the nut, and a return spring is provided on the riveting plate, with a return spring connecting plate to ensure that the sliding forming plates always have a tendency to move away from the riveting interface. A driving rod is formed on the sliding forming plate. The driving structure includes a driving cover and a driving module for reciprocating sliding of the driving cover on the riveting body. The driving cover has retractable cavities on both sides for inserting the driving rod. The diameter of the retractable cavity gradually shrinks along the insertion direction. The driving rod slides along the cavity wall of the retractable cavity to bring the sliding forming plates closer together and compress the nut.

Description

Technical Field

[0001] This invention relates to the field of bolt processing equipment technology, and specifically to a riveting device for processing rivet nuts. Background Technology

[0002] In the existing field of mechanical assembly, threaded fasteners are widely used in various equipment. However, traditional threaded connections are prone to loosening and failure under vibration, impact or alternating load conditions, leading to structural safety hazards. Existing anti-loosening measures (such as spring washers, double nuts or thread sealant) have limitations such as high maintenance costs, poor temperature resistance or bulk redundancy, especially in high-load and high-vibration environments (such as automobile chassis, aerospace components or industrial equipment). Therefore, it is necessary to use riveting technology to make the nut mechanically deform and form an irreversible interlock with the bolt, thereby eliminating the risk of loosening. In existing technologies, the nut is generally welded to the bolt using riveting equipment.

[0003] For example, a crimping mechanism and crimping machine disclosed in CN210676668U includes: a portal frame and a crimping seat, the crimping seat being disposed inside the portal frame and slidably connected to the portal frame; the portal frame and the crimping seat defining a receiving space for the crimping slider; the crimping seat being connected to a driving device through an opening in the portal frame, and the crimping slider being contracted or expanded under the drive of the driving device.

[0004] When existing riveting equipment can only perform single riveting, the entire equipment is in a state of processing suspension during the expansion of the pressing slider, resulting in low production efficiency. Summary of the Invention

[0005] To address the technical problems existing in the background art, the present invention proposes a riveting device for processing riveting nuts.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows:

[0007] A riveting device for processing rivet nuts includes a machine base and a riveting assembly mounted on the machine base.

[0008] The riveting assembly includes a riveting body, riveting plates disposed at both ends of the riveting body, several circumferentially spaced sliding forming plates slidably disposed on the riveting plates, and a driving structure for driving the sliding forming plates to move closer together. The riveting plates form a riveting interface for inserting a nut, and a return spring is provided on the riveting plates. The return spring is connected to a plate so that the sliding forming plates always have a tendency to move away from the riveting interface.

[0009] The sliding forming plate is provided with a drive rod. The drive structure includes a drive cover and a drive module that drives the drive cover to slide back and forth on the riveting body. The drive cover has a gathering cavity on both sides for the drive rod to be inserted. The diameter of the gathering cavity gradually shrinks along the insertion direction. The drive rod slides along the cavity wall of the gathering cavity to make the sliding forming plates relatively close together and squeeze the nut.

[0010] Preferably, a detachable limiting post is provided inside the retracting cavity, and the drive rod abuts against the outer periphery of the limiting post to restrict the limiting post from continuing to slide. Through the above improvements, limiting posts with different outer diameters can be set according to requirements, thereby matching nuts of different sizes and avoiding excessive sliding stroke that could cause excessive compression to the nuts.

[0011] Preferably, the riveting plate includes a connecting mounting plate and a limiting plate. The mounting plate has a sliding groove, and the sliding forming plate is slidably disposed within the sliding groove. The limiting plate covers the sliding groove to prevent the sliding forming plate from detaching from the sliding groove. The sliding groove also includes a guide groove for the drive rod to slide. Through these improvements, the mounting plate and the limiting plate work together to prevent the sliding forming plate from detaching from the mounting plate, ensuring the reliability of the sliding forming plate's installation. Furthermore, placing the sliding forming plate within the sliding groove improves its stability during sliding, and placing the drive rod within the guide groove prevents the drive rod from deviating, further enhancing the stability of the sliding forming plate during sliding.

[0012] Preferably, the limiting plate forms a disassembly groove for exposing the sliding forming plate, and a limiting block is embedded in the disassembly groove. The limiting block is connected to the mounting plate, and a connecting protrusion for connecting to the mounting plate is formed on the limiting block. A connecting hook is formed on the sliding forming plate, and one end of the return spring is fixed to the connecting protrusion, while the other end is connected to the connecting hook. Through the above improvements, the limiting block and the return spring cooperate to ensure that the sliding forming plate always has a tendency to move away from the riveting joint. Furthermore, when it is necessary to replace the spring or the forming limiting plate, the limiting block can be directly disassembled to expose the disassembly groove, greatly improving the convenience of daily maintenance.

[0013] Preferably, the end of the drive rod forms an arc-shaped guide surface and is provided with a chrome plating layer. Through the above improvements, the arc-shaped guide surface is used to ensure the smoothness of the drive rod during sliding, and the chrome plating layer greatly increases the structural strength and service life of the drive rod.

[0014] Preferably, the machine base is further provided with a feeding assembly, which includes a screw conveying structure for feeding the screw, a screw connection structure for screwing the screw and nut together, and a transfer structure for transporting the screw. Through the above improvements, in the entire process of connecting the screw and nut, the nut is first placed on the screw connection structure manually or by a robot, and the screw is then conveyed to the screw connection structure by the screw conveying structure. The transfer structure then transfers the screw to the screw connection structure, and the nut is screwed onto the screw by the screw connection structure. Finally, the transfer structure inserts the connected screw into the riveting assembly for riveting, so that the nut is riveted onto the screw. Compared with manually threading the nut and screw and placing them on the riveting assembly for riveting, the riveting efficiency is greatly improved.

[0015] Preferably, the screw conveyor structure includes a feeding bin for storing screws, a lifting plate assembly movably arranged in the feeding bin, a first screw conveyor line connected to the discharge end of the lifting plate assembly, and a receiving platform for connecting the first screw conveyor line. The lifting plate assembly includes several support plates, several lifting plates staggered with the support plates, and a drive unit for driving the lifting plates. Through the above improvements, the drive unit drives the lifting plates to move up and down, thereby gradually lifting the screws in the feeding bin to the first screw conveyor line, and then conveying the screws to the receiving platform through the first screw conveyor line, thus realizing automatic screw feeding.

[0016] Preferably, the screw connection structure includes a support platform for placing the screw, a rotating seat for placing the nut, and a drive seat for driving the rotating seat to rotate. The rotating seat has a placement groove for placing the nut, and a through hole for the screw to pass through. The support platform is provided with a clamping unit for clamping the end of the screw, and a pushing unit for driving the clamping unit to move toward the rotating seat. With the above improvements, the nut is manually placed onto the rotating seat, the conveying structure places the screw from the receiving platform onto the support platform, and the clamping unit clamps the end of the screw. The pushing unit drives the tail of the screw to insert into the nut. As the drive seat drives the rotating seat to rotate, the pushing unit gradually pushes the screw into the nut until the nut and the end of the screw abut against each other, realizing the screw connection between the nut and the screw. After the connection is completed, the clamping unit pulls the assembled screw back to the support platform under the action of the pushing unit. Compared with manually tightening the nut, the production efficiency is greatly improved.

[0017] Preferably, the transfer structure includes a first clamping part for operating the screw, a first conveying module for driving the first clamping part to move and rotate, a second screw conveyor line for conveying the assembled screw and nut, a second clamping part for clamping the assembled screw and nut, and a second conveying module for driving the second clamping part to move and rotate. The first conveying module is equipped with a visual detection structure for detecting the screw's placement angle. Through these improvements, the first conveying module drives the first clamping part to move, the visual detection structure determines the screw's placement angle on the receiving platform, the first clamping part clamps and adjusts the screw to a specified angle, and it is placed on the bearing platform. After the nut and screw are connected, the first clamping part places the screw on the second screw conveyor line, and the second conveying module drives the second clamping part to insert the screw into the riveting assembly for riveting. After riveting, the second clamping part unloads the material, significantly improving production efficiency and reducing the labor intensity of employees.

[0018] Preferably, the support platform is provided with a support structure, which includes a support block and a lifting unit for driving the support block to move up and down. The support block is provided with a support groove for inserting the screw. With the above improvements, the screw includes a nut part and a rod part. The rod part is inserted into the support groove, so that the rod part can be better aligned with the nut to ensure the accuracy of the screw and nut assembly process.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] The drive module drives the drive cover to slide back and forth repeatedly, allowing the drive rod to be inserted into the drive cover and slide along the closing cavity. This brings the sliding forming plates closer together and rivets the nuts. The sliding forming plates on both sides are automatically reset by the reset spring, eliminating the reset waiting time after a single riveting operation in traditional equipment. This achieves a "riveting-reset-riveting" cycle operation, which significantly improves production efficiency compared to existing riveting modes. Furthermore, the sliding forming plates on both sides simultaneously squeeze the nuts through the closing cavity, avoiding the metal parts from being skewed or deformed due to unilateral force, thus improving the concentricity of the riveting. The closing cavity design of the drive cover ensures that all drive rods move along the same trajectory, making the extrusion stroke and angle of multiple sets of sliding forming plates consistent, thereby improving the riveting quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the riveting assembly of the present invention;

[0023] Figure 3 This is an exploded view of the riveting assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the riveting body of the present invention;

[0025] Figure 5 This is a cross-sectional view of the riveting assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the sliding forming plate and the sliding groove of the present invention;

[0027] Figure 7 This is a schematic diagram of the feeding assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the screw conveyor structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the screw connection structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the screw connection structure of the present invention from another angle;

[0031] Figure 11 This is a schematic diagram of the structure of the transfer structure and the riveting assembly of the present invention.

[0032] In the diagram: 1. Machine base; 2. Riveting assembly; 3. Feeding assembly; 4. Nut; 5. Screw; 1.1. Riveting body; 1.2. Riveting plate; 1.3. Sliding forming plate; 1.4. Drive structure; 1.5. Riveting interface; 1.6. Reset tension spring; 2.1. Drive rod; 2.2. Drive cover; 2.3. Drive module; 2.4. Gathering cavity; 2.5. Limiting post; 3.1. Mounting plate; 3.2. Limiting plate; 3.3. Sliding groove; 3.4. Guide groove; 3.5. Disassembly groove; 3.6. Limiting block; 3.7. Connecting protrusion; 3.8. Connecting hook; 3.9. Arc-shaped guide surface; 3.10. Riveting guide seat; 4.1. Screw conveying structure; 4.2. Screw connection 4.3 Transfer Structure; 5.1 Feeding Bin; 5.2 Lifting Plate Assembly; 5.3 First Screw Conveyor Line; 5.4 Receiving Platform; 5.5 Support Plate; 5.6 Lifting Plate; 5.7 Drive Unit; 6.1 Bearing Platform; 6.2 Rotating Seat; 6.3 Drive Seat; 6.4 Placement Slot; 6.5 Through Hole; 6.6 Clamping Unit; 6.7 Pushing Unit; 7.1 First Clamping Part; 7.2 First Conveying Module; 7.3 Second Screw Conveyor Line; 7.4 Second Clamping Part; 7.5 Second Conveying Module; 7.6 Vision Inspection Structure; 8.1 Support Structure; 8.2 Support Block; 8.3 Lifting Unit; 8.4 Support Slot. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0035] like Figure 1-11 As shown, a riveting device for processing riveting nuts 4 includes a machine base 1 and a riveting assembly 2 disposed on the machine base 1.

[0036] Specifically, the riveting assembly 2 includes a riveting body 1.1, riveting plates 1.2 disposed at both ends of the riveting body 1.1, several circumferentially spaced sliding forming plates 1.3 slidably disposed on the riveting plates 1.2, and a driving structure 1.4 for driving the sliding forming plates 1.3 to move closer together. The riveting plates 1.2 form a riveting interface 1.5 for inserting the nut 4, and a return spring 1.6 is provided on the riveting plates 1.2. The return spring 1.6 is connected to a plate so that the sliding forming plates 1.3 always have a tendency to move away from the riveting interface 1.5. The driving structure 1.4 acts on the sliding forming plates 1.3 to make them move closer together so as to rivet the nut 4 in the riveting interface 1.5 and fix it on the screw 5. After the riveting is completed, the sliding forming plates 1.3 automatically reset under the action of the return spring 1.6.

[0037] Furthermore, a drive rod 2.1 is formed on the sliding forming plate 1.3, and the drive structure 1.4 includes a drive cover 2.2 and a drive module 2.3 that drives the drive cover 2.2 to reciprocate on the riveting body 1.1. The drive cover 2.2 has a gathering cavity 2.4 on both sides for the drive rod 2.1 to be inserted. The diameter of the gathering cavity 2.4 gradually shrinks along the insertion direction. The drive rod 2.1 slides along the cavity wall of the gathering cavity 2.4 so that the sliding forming plate 1.3 is relatively close together and squeezes the nut 4.

[0038] The drive module 2.3 drives the drive cover 2.2 to slide back and forth repeatedly, causing the drive rod 2.1 to be inserted into the drive cover 2.2 and slide along the gathering cavity 2.4. This allows the sliding forming plates 1.3 to move closer together and rivet the nut 4. The sliding forming plates 1.3 on both sides are automatically reset by the reset spring 1.6, eliminating the reset waiting time after a single riveting operation in traditional equipment. This achieves a "riveting-reset-riveting" cycle operation, which significantly improves production efficiency compared to existing riveting modes. Furthermore, the sliding forming plates 1.3 synchronously squeeze the nut 4 through the gathering cavity 2.4, avoiding metal part skewing or deformation caused by unilateral force and improving riveting concentricity. The design of the gathering cavity 2.4 of the drive cover 2.2 ensures that all drive rods 2.1 move along the same trajectory, making the extrusion stroke and angle of multiple sets of sliding forming plates 1.3 consistent, thus improving riveting quality.

[0039] like Figure 4 , Figure 5 As shown, as a further explanation of the specific structure of the drive cover 2.2, a detachable limiting post 2.5 is provided in the retractable cavity 2.4. During the riveting process, when the drive rod 2.1 abuts against the outer periphery of the limiting post 2.5, the limiting post 2.5 is restricted from continuing to slide, so as to avoid excessive sliding stroke and excessive compression of the nut 4.

[0040] In addition, limit pins 2.5 with different outer diameters can be set according to requirements to match nuts 4 of different sizes.

[0041] The retractable cavity 2.4 is equipped with a fixed connecting post, which is threadedly connected to the limiting post 2.5 to enable quick installation and removal of the limiting post 2.5.

[0042] like Figures 2 to 6 As shown, as a further explanation of the specific embodiment of the riveting plate 1.2, the riveting plate 1.2 includes a connecting mounting plate 3.1 and a limiting plate 3.2. The mounting plate 3.1 has a sliding groove 3.3. The sliding forming plate 1.3 is slidably disposed in the sliding groove 3.3. The limiting plate 3.2 covers the sliding groove 3.3 to restrict the sliding forming plate 1.3 from disengaging from the sliding groove 3.3. When the drive cover 2.2 slides toward the drive rod 2.1, the drive rod 2.1 will move closer to the drive rod 2.4 under the action of the retracting cavity 2.4, so that the sliding forming plate 1.3 slides in the sliding groove 3.3 and rivets the nut 4.

[0043] Specifically, the mounting plate 3.1 and the limiting plate 3.2 work together to prevent the sliding forming plate 1.3 from detaching from the mounting plate 3.1, ensuring the reliability of the installation of the sliding forming plate 1.3. Furthermore, by placing the sliding forming plate 1.3 within the sliding groove 3.3, the stability of the sliding forming plate 1.3 during the sliding process is improved.

[0044] Furthermore, the guide groove 3.4 within the sliding groove 3.3 allows the drive rod 2.1 to slide, thus preventing the drive rod 2.1 from shifting and further improving the stability of the sliding forming plate 1.3 during the sliding process.

[0045] In addition, the limiting plate 3.2 forms a disassembly groove 3.5 for exposing the sliding forming plate 1.3, and a limiting block 3.6 is embedded in the disassembly groove 3.5. The limiting block 3.6 is connected to the mounting plate 3.1, and a connecting protrusion 3.7 is formed on the limiting block 3.6 to connect with the mounting plate 3.1. A connecting hook 3.8 is formed on the sliding forming plate 1.3. One end of the return spring 1.6 is fixed on the connecting protrusion 3.7, and the other end is connected to the connecting hook 3.8. By using the cooperation between the limiting block 3.6 and the return spring 1.6, the sliding forming plate 1.3 always has a tendency to move away from the riveting interface 1.5. When it is necessary to replace the spring or the forming limiting plate 3.2, the limiting block 3.6 can be directly disassembled to expose the disassembly groove 3.5, which greatly improves the convenience of daily maintenance.

[0046] like Figure 4 , Figure 5 As shown, as a further explanation of the embodiment of the drive rod 2.1, the drive rod 2.1 is integrally formed on the sliding forming plate 1.3, thereby ensuring the structural strength of the drive rod 2.1.

[0047] Furthermore, the end of the drive rod 2.1 forms an arc-shaped guide surface 3.9 and is provided with a chrome-plated layer. The arc-shaped guide surface 3.9 is used to ensure the smoothness of the sliding process of the drive rod 2.1 and to greatly increase the structural strength and service life of the drive rod 2.1.

[0048] Preferably, the limiting plate 3.2 is provided with a riveting guide seat 3.10, which provides guidance for the screw 5 during the riveting process and improves the accuracy of the screw 5 when it is inserted.

[0049] like Figures 7 to 11 As shown, to further explain the feeding of nut 4 and screw 5, before the riveting operation, nut 4 needs to be screwed onto screw 5 so that nut 4 is threaded onto the top of screw 5.

[0050] Specifically, the machine 1 is also equipped with a feeding assembly 3, which includes a screw conveying structure 4.1 for feeding the screw 5, a screw connection structure 4.2 for screwing the screw 5 and the nut 4, and a transfer structure 4.3 for transporting the screw 5.

[0051] During the entire feeding process of screw 5 and nut, the nut 4 is first placed onto the threaded connection structure 4.2 by manual labor or a robot, and then the screw 5 is conveyed by the screw conveyor structure 4.1. The screw 5 is then placed onto the threaded connection structure 4.2 by the transfer structure 4.3, and the nut 4 is screwed onto the screw 5 using the threaded connection structure 4.2. Finally, the connected screw 5 is inserted into the riveting assembly 2 by the transfer structure 4.3 for riveting, so that the nut 4 is riveted onto the screw 5. Compared with manually threading the nut 4 and screw 5 and placing them onto the riveting assembly 2 for riveting, this method greatly improves riveting efficiency and reduces the labor intensity of employees.

[0052] Furthermore, the screw conveyor structure 4.1 includes a feeding bin 5.1 for storing the screw 5, a lifting plate assembly 5.2 movably disposed within the feeding bin 5.1, a first screw conveyor line 5.3 connected to the discharge end of the lifting plate assembly 5.2, and a receiving platform 5.4 for connecting to the first screw conveyor line 5.3.

[0053] The lifting plate assembly 5.2 includes several support plates 5.5, several lifting plates 5.6 interleaved with the support plates 5.5, and a drive unit 5.7 that drives the lifting plates 5.6 to move. The drive unit 5.7 drives the lifting plates 5.6 to move up and down, thereby gradually lifting the screw 5 in the loading bin 5.1 onto the first screw conveyor line 5.3, and then conveying the screw 5 to the receiving platform 5.4 through the first screw conveyor line 5.3, thus realizing the automatic feeding of the screw 5.

[0054] The screw connection structure 4.2 includes a support platform 6.1 for placing the screw 5, a rotating seat 6.2 for placing the nut 4, and a drive seat 6.3 for driving the rotating seat 6.2 to rotate. The rotating seat 6.2 has a placement groove 6.4 for placing the nut 4, and a through hole 6.5 for the screw 5 to pass through. The support platform 6.1 is provided with a clamping unit 6.6 for clamping the end of the screw 5, and a pushing unit 6.7 for driving the clamping unit 6.6 to move toward the rotating seat 6.2.

[0055] The nut 4 is manually placed onto the rotating seat 6.2. The conveying structure places the screw 5 on the receiving platform 5.4 onto the bearing platform 6.1, and the end of the screw 5 is clamped by the clamping unit 6.6. The pushing unit 6.7 drives the tail of the screw 5 to insert into the nut 4. As the driving seat 6.3 drives the rotating seat 6.2 to rotate, the pushing unit 6.7 gradually pushes the screw 5 into the nut 4 until the end of the nut 4 and the screw 5 abut against each other, realizing the screw connection between the nut 4 and the screw 5. After the connection is completed, the clamping unit 6.6, under the action of the pushing unit 6.7, pulls the assembled screw 5 back onto the bearing platform 6.1. Compared with manually tightening the nut 4, the production efficiency is greatly improved.

[0056] During the connection process of nut 4 and screw 5, screw 5 will pass through through hole 6.5 until nut 4 and the end of screw 5 abut against each other to ensure the installation position of nut 4.

[0057] In addition, the transfer structure 4.3 includes a first clamping part 7.1 for operating the screw 5, a first conveying module 7.2 for driving the first clamping part 7.1 to move and rotate, a second screw conveying line 7.3 for conveying the assembled screw 5 and nut 4, a second clamping part 7.4 for clamping the assembled screw 5 and nut 4, and a second conveying module 7.5 for driving the second clamping part 7.4 to move and rotate. The first conveying module 7.2 is provided with a visual detection structure 7.6 for detecting the placement angle of the screw 5.

[0058] The first conveying module 7.2 and the second conveying module 7.5 include a transverse linear module that drives the first clamping part 7.1 and the second clamping part 7.4 to perform multi-axis transverse movement, a horizontal lifting linear module that drives the first clamping part 7.1 and the second clamping part 7.4 to move up and down, and a rotating unit disposed on the moving end of the lifting linear module. The rotating unit is connected to the first clamping part 7.1 and the second clamping part 7.4, thereby driving the first clamping part 7.1 and the second clamping part 7.4 to move and rotate, so as to transport the screw 5.

[0059] Throughout the transportation process, the first conveying module 7.2 drives the first clamping part 7.1 to move. The visual inspection structure 7.6 determines the placement angle of the screw 5 on the receiving platform 5.4. The first clamping part 7.1 clamps the screw 5 and adjusts it to the specified angle, then places it on the bearing platform 6.1. After the nut 4 and screw 5 are connected, the first clamping part 7.1 clamps the screw 5 onto the second screw conveyor line 7.3. The second conveying module 7.5 drives the second clamping part 7.4 to insert the screw 5 into the riveting assembly 2 for riveting. After riveting, the second clamping part 7.4 is used for unloading, which greatly improves production efficiency and reduces the labor intensity of employees.

[0060] Preferably, the machine 1 is also equipped with a feeding conveyor line to realize automatic feeding of the screw.

[0061] Preferably, the support platform 6.1 is provided with a support structure 8.1, which includes a support block 8.2 and a lifting unit 8.3 for driving the support block 8.2 to move up and down. The support block 8.2 has a support groove 8.4 for inserting the screw 5. The screw 5 includes a nut part and a rod part. The rod part is inserted into the support groove 8.4 so that the rod part can be better aligned with the nut 4, thereby ensuring the accuracy of the assembly process of the screw 5 and the nut 4.

[0062] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A riveting device for processing riveting nuts, characterized in that, Includes a machine base (1) and a riveting assembly (2) mounted on the machine base (1); The riveting assembly (2) includes a riveting body (1.1), riveting plates (1.2) respectively disposed at both ends of the riveting body (1.1), a number of circumferentially spaced sliding forming plates (1.3) slidably disposed on the riveting plates (1.2), and a driving structure (1.4) for driving the sliding forming plates (1.3) to move closer together. The riveting plates (1.2) form a riveting interface (1.5) for inserting the nut (4), and the riveting plates (1.2) are provided with a return spring (1.6). One end of the return spring (1.6) is connected to the riveting plate (1.2), and the other end is connected to the sliding forming plate (1.3) so that the sliding forming plate (1.3) always has a tendency to move away from the riveting interface (1.5). The sliding forming plate (1.3) is provided with a drive rod (2.1). The drive structure (1.4) includes a drive cover (2.2) and a drive module (2.3) that drives the drive cover (2.2) to slide back and forth on the riveting body (1.1). The drive cover (2.2) has a gathering cavity (2.4) on both sides for the drive rod (2.1) to be inserted. The diameter of the two ends of the gathering cavity (2.4) gradually shrinks along the insertion direction. The drive rod (2.1) slides along the cavity wall of the gathering cavity (2.4) so ​​that the sliding forming plate (1.3) moves closer together and squeezes the nut (4).

2. The riveting equipment for processing riveting nuts according to claim 1, characterized in that: The gathering cavity (2.4) is provided with a detachable limiting post (2.5), and the driving rod (2.1) abuts against the outer periphery of the limiting post (2.5) to restrict the limiting post (2.5) from continuing to slide.

3. The riveting equipment for processing riveting nuts according to claim 1, characterized in that: The riveting plate (1.2) includes a connecting mounting plate (3.1) and a limiting plate (3.2). The mounting plate (3.1) has a sliding groove (3.3). The sliding forming plate (1.3) is slidably disposed in the sliding groove (3.3). The limiting plate (3.2) covers the sliding groove (3.3) to restrict the sliding forming plate (1.3) from disengaging from the sliding groove (3.3). The sliding groove (3.3) also has a guide groove (3.4) for the drive rod (2.1) to slide.

4. The riveting equipment for processing riveting nuts according to claim 3, characterized in that: The limiting plate (3.2) forms a disassembly groove (3.5) for the exposed sliding forming plate (1.3), and a limiting block (3.6) is embedded in the disassembly groove (3.5). The limiting block (3.6) is connected to the mounting plate (3.1). The limiting block (3.6) forms a connecting protrusion (3.7) that connects to the mounting plate (3.1). A connecting hook (3.8) is formed on the sliding forming plate (1.3). One end of the reset spring (1.6) is fixed on the connecting protrusion (3.7), and the other end is connected to the connecting hook (3.8).

5. The riveting equipment for processing riveting nuts according to claim 1, characterized in that: The end of the drive rod (2.1) forms an arc-shaped guide surface (3.9) and is provided with a chrome plating layer.

6. The riveting equipment for processing riveting nuts according to claim 1, characterized in that: The machine base (1) is also provided with a feeding assembly (3), which includes a screw conveying structure (4.1) for feeding the screw (5), a screw connection structure (4.2) for screwing the screw (5) and the nut (4), and a transfer structure (4.3) for transporting the screw (5).

7. A riveting device for processing riveting nuts according to claim 6, characterized in that: The screw conveyor structure (4.1) includes a feeding bin (5.1) for storing screws (5), a lifting plate group (5.2) movably arranged in the feeding bin (5.1), a first screw conveyor line (5.3) connected to the discharge end of the lifting plate group (5.2), and a receiving platform (5.4) for connecting the first screw conveyor line (5.3). The lifting plate group (5.2) includes several support plates (5.5), several lifting plates (5.6) staggered with the support plates (5.5), and a drive unit (5.7) for driving the lifting plates (5.6) to move.

8. A riveting device for processing riveting nuts according to claim 6, characterized in that: The screw connection structure (4.2) includes a support platform (6.1) for placing the screw (5), a rotating seat (6.2) for placing the nut (4), and a drive seat (6.3) for driving the rotating seat (6.2) to rotate. The rotating seat (6.2) has a placement groove (6.4) for placing the nut (4), and the placement groove (6.4) has a through hole (6.5) for the screw (5) to pass through. The support platform (6.1) is provided with a clamping unit (6.6) for clamping the end of the screw (5) and a pushing unit (6.7) for driving the clamping unit (6.6) to move toward the rotating seat (6.2).

9. A riveting device for processing riveting nuts according to claim 6, characterized in that: The transfer structure (4.3) includes a first clamping part (7.1) for operating the screw (5), a first conveying module (7.2) for driving the first clamping part (7.1) to move and rotate, a second screw conveying line (7.3) for conveying the assembled screw (5) and nut (4), a second clamping part (7.4) for clamping the assembled screw (5) and nut (4), and a second conveying module (7.5) for driving the second clamping part (7.4) to move and rotate. The first conveying module (7.2) is provided with a visual detection structure (7.6) for detecting the placement angle of the screw (5).

10. A riveting device for processing riveting nuts according to claim 8, characterized in that: The support platform (6.1) is provided with a support structure (8.1), which includes a support block (8.2) and a lifting unit (8.3) for driving the support block (8.2) to move up and down. The support block (8.2) is provided with a support groove (8.4) for inserting the screw (5).

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