Automatic rivet pulling device

Abstract

An automatic pull rivet device includes a damping mounting base, a lifting platform, a pull rivet gun and a nail feeding mechanism; the lifting platform is arranged on one side of the damping mounting base; the pull rivet gun is fixed to the lifting platform; the nail feeding mechanism includes a nail feeding pipe, an extension swing cylinder and a jaw assembly, the nail feeding pipe is fixed relative to the lifting platform, the extension swing cylinder includes a cylinder body part fixed relative to the lifting platform and a lifting swing shaft extending downward from the lower end of the cylinder body part, and the jaw assembly is fixed to the lower end of the lifting swing shaft to perform lifting and swinging actions under the drive of the extension swing cylinder, and the jaw assembly is used for transferring the rivet output from the lower end port of the nail feeding pipe to the position of the gun head of the pull rivet gun; the automatic pull rivet device can replace manual pull riveting, improve production efficiency and production quality, greatly reduce labor cost, and solve the problems of high labor cost and quality guarantee failure of manual assembly.

Description

Technical Field

[0001] This invention relates to the field of riveting assembly technology, and more specifically to an automatic riveting device. Background Technology

[0002] Currently, riveting fastening technology is applied in the fastening processes of various metal, plastic sheet, and pipe manufacturing industries, and is widely used in automotive, aerospace, railway, refrigeration, elevator, switch, instrument, clamp, decorative lighting, electromechanical, and light industrial products. In particular, the recent trend of energy conservation and emission reduction in automobiles has led to an increasing proportion of aluminum alloy parts used in vehicles. Because welding aluminum alloy parts is more difficult than welding traditional carbon steel parts, traditional welding processes are difficult to meet their welding requirements. Rivet fasteners, due to their high fastening force, never loosening, and high shear strength, are often used as an alternative to welding for connecting aluminum alloy parts.

[0003] In existing technologies, riveting and fastening operations typically involve manual or pneumatic riveting guns, requiring manual rivet insertion and other manual tasks. This manual riveting method suffers from high failure rates, frequent omissions, and slow assembly speeds. These shortcomings fall far short of the demands for automation, intelligence, and high efficiency in modern industrial equipment, severely limiting its widespread application in modern industry.

[0004] In view of this, it is necessary to provide an improved technical solution to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. In order to achieve the above-mentioned objective, the present invention provides an automatic riveting device, the specific design of which is as follows.

[0006] An automatic riveting device includes a shock-absorbing mounting base, a lifting platform, a rivet gun, and a rivet feeding mechanism. The lifting platform is ellipsably disposed on one side of the shock-absorbing mounting base. The rivet gun is fixed to the lifting platform. The rivet feeding mechanism includes a rivet feeding tube, a swing cylinder, and a gripper assembly. The rivet feeding tube is fixed relative to the lifting platform. The swing cylinder includes a cylinder body fixed relative to the lifting platform and a lifting swing shaft extending downward from the lower end of the cylinder body. The gripper assembly is fixed to the lower end of the lifting swing shaft to perform lifting and swinging movements under the drive of the swing cylinder. The gripper assembly is used to transfer the rivet output from the lower port of the rivet feeding tube to the head position of the rivet gun.

[0007] Furthermore, the shock-absorbing mounting base includes a fixed plate, a floating plate, elastic shock-absorbing pads, and a locking mechanism. The lifting platform is disposed on the side of the floating plate of the shock-absorbing mounting base. The floating plate and the fixed plate are disposed opposite to each other and are connected by a plurality of elastic shock-absorbing pads. The locking mechanism has a first working position for locking the positional relationship between the floating plate and the fixed plate and a second working position for releasing the locked positional relationship between the two.

[0008] Furthermore, the locking mechanism includes a vertical protrusion fixed to the floating plate and protruding towards one side of the fixed plate, two sets of top pins symmetrically arranged on both sides of the width direction of the vertical protrusion, and two sets of opposing cylinders that drive the two sets of top pins to move relative to each other to press against the vertical protrusion. The ends of the top pins facing the vertical protrusion are tapered, and the vertical protrusion is provided with mating holes for the top pins to be inserted and engaged. The cylinder bodies of the opposing cylinders are fixedly arranged relative to the fixed plate.

[0009] Furthermore, the locking mechanism also has a horizontal guide assembly that limits the movement of the two sets of top pins in opposite directions. The horizontal guide assembly includes a horizontal guide rod and a pair of sliders that are slidably engaged with the horizontal guide rod. The horizontal guide rod is fixedly disposed relative to the fixed plate. The pair of sliders are distributed on both sides of the vertical protrusion and are respectively connected to the output shaft of the corresponding side of the opposing cylinder. The top pin is disposed on the corresponding side of the slider.

[0010] Furthermore, the shock-absorbing mounting base also includes an intermediate plate fixed to the side of the floating plate away from the fixed plate, the fixed plate having an extension plate extending from the bottom toward the side of the floating plate, and the shock-absorbing mounting base also having a bottom shock-absorbing pad disposed between the bottom of the intermediate plate and the top of the extension plate.

[0011] Furthermore, the automatic riveting device also includes a vertical guide rail, a lifting cylinder, and a flexible compensation cylinder. The vertical guide rail and the cylinder body of the lifting cylinder are both located on the side of the floating plate away from the fixed plate and are fixedly installed relative to the floating plate. The lifting platform is slidably fitted on the vertical guide rail. The cylinder body of the flexible compensation cylinder is fixed to the upper side of the lifting platform, and the output shaft of the flexible compensation cylinder is connected to the downwardly extending output shaft of the lifting cylinder.

[0012] Furthermore, the automatic riveting device also includes an anti-jamming cylinder to prevent the nail feeding mechanism from jamming. The cylinder body of the anti-jamming cylinder is fixedly disposed relative to the shock-absorbing mounting base. The output shaft of the anti-jamming cylinder faces downward and is configured to impact the lifting platform or the fixing block fixed to the lifting platform when extended.

[0013] Furthermore, the automatic riveting device also has a stroke sensor that senses the travel of the lifting platform.

[0014] Furthermore, the gripper assembly includes a gripper cylinder fixed to the lower end of the lifting swing shaft and an optical fiber sensor with an induction rivet located inside the gripper cylinder's jaw.

[0015] Furthermore, the automatic riveting device also includes a robotic arm, and the shock-absorbing mounting base is fixed to the robotic arm on the side away from the lifting platform.

[0016] The beneficial effects of this invention are as follows: Based on the automatic riveting device provided by this invention, the rivet feeding and riveting actions are completed automatically during the riveting process, which can completely replace manual labor, improve production efficiency and quality, and significantly reduce labor costs, solving the problems of high labor costs and the inability of manual assembly to guarantee quality; when connected with automated and intelligent production lines, it can work continuously around the clock, making production more intelligent and efficient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 The figure shown is a three-dimensional schematic diagram of one embodiment of the automatic riveting device of the present invention;

[0019] Figure 2 As shown Figure 1 A schematic diagram showing the automatic riveting device after removing the front baffle and electrical control box, among other components.

[0020] Figure 3 The diagram shows the connection between the shock-absorbing mounting base, the lifting platform, and the rivet gun.

[0021] Figure 4 The diagram shows the connection between the shock-absorbing mounting base, the lifting platform, and the nail feeding mechanism.

[0022] Figure 5 As shown Figure 4 A schematic diagram of the downward extension of the lifting and swinging shaft of the center-extension swing cylinder;

[0023] Figure 6 A schematic diagram of the overall shock-absorbing mounting base shown;

[0024] Figure 7 The diagram shown is a structural schematic of the shock absorber mounting base after the fixing plate has been removed.

[0025] Figure 8 As shown Figure 6 A schematic diagram of the shock-absorbing mounting bracket cut along the AA' direction at the angle shown.

[0026] Figure 9 The diagram shown is a schematic representation of the first angle of the engagement between the shock-absorbing mounting base and the lifting platform.

[0027] Figure 10 The diagram shown is a second-angle view of the vibration damping mounting base and the lifting platform in action.

[0028] Figure 11 As shown Figure 1 Another perspective 3D view of the automatic riveting device;

[0029] Figure 12 The figure shown is a three-dimensional schematic diagram of another implementation structure of the automatic riveting device.

[0030] In the diagram, 100 is the vibration damping mounting base, 11 is the fixing plate, 110 is the side plate, 111 is the extension plate, 12 is the floating plate, 13 is the elastic vibration damping pad, 141 is the vertical protrusion, 1410 is the mating hole, 142 is the top pin, 1421 is the first top pin, 1422 is the second top pin, 143 is the opposing cylinder, 1431 is the first opposing cylinder, 1432 is the second opposing cylinder, 1430 is the output shaft of opposing cylinder 143, 144 is the horizontal guide rod, 145 is the slider, 1451 is the first slider, 1452 is the second slider, 15 is the bottom vibration damping pad, 151 is the support plate, 10 is the middle plate, and 101 is the adapter plate; 200 is the lifting platform, 21 is the vertical guide rail, 22 is the lifting cylinder, and 23 is the... 201 is a flexible cylinder, 201 is a fixed block, 24 is a stroke sensor; 300 is a rivet gun, 31 is a rivet gun connecting block; 400 is a nail feeding mechanism, 41 is a nail feeding tube, 42 is a swing cylinder, 421 is the cylinder body of the swing cylinder 42, 422 is the lifting swing shaft of the swing cylinder 42, 43 is a gripper assembly, 430 is a gripper cylinder, 4300 is a gripper, 431 is an upper connecting plate, 4310 is a receiving hole, 432 is a lower support plate, 44 is an anti-jamming cylinder, 40 is a secondary connecting block; 500 is a rivet; 600 is an electrical control box; 700 is a front baffle, 70 is a fiber optic amplifier, 71 is a solenoid valve, 72 is a pressure reducing valve, 73 is a stroke sensor signal amplifier, 74 is an oil mist lubricator, and 75 is a single-control solenoid valve;

[0031] 800 is a robotic arm. Detailed Implementation

[0032] 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.

[0033] refer to Figure 1 , Figure 2 As shown, the automatic riveting device of the present invention includes a shock-absorbing mounting base 100, a lifting platform 200, a rivet gun 300, and a rivet feeding mechanism 400. The lifting platform 200 is flexibly positioned on one side of the shock-absorbing mounting base 100; the rivet gun 300 is fixed to the lifting platform 200; and the rivet feeding mechanism 400 includes a rivet feeding tube 41, a swing cylinder 42, and a gripper assembly 43.

[0034] refer to Figure 5 As shown, the rivet feeding tube 41 is fixedly installed relative to the lifting platform 200. The extension and swing cylinder 42 includes a cylinder body 421 fixedly installed relative to the lifting platform 200 and a lifting swing shaft 422 extending downward from the lower end of the cylinder body 421. The gripper assembly 43 is fixed to the lower end of the lifting swing shaft 422 to perform lifting and swinging actions under the drive of the extension and swing cylinder 42. The gripper assembly 43 is used to transfer the rivet 500 output from the lower port of the rivet feeding tube 41 to the gun head position of the rivet gun 300.

[0035] In some more detailed embodiments, combined with Figure 3 As shown, the rivet gun 300 is fixed to the lifting platform 200 via the rivet gun connecting block. Combined with... Figure 4 As shown, a secondary connecting block 40 is also fixed on one side of the lifting platform 200. The nail feeding pipe 41 and the cylinder body 421 of the swing cylinder 42 are both fixed to the lifting platform 200 through the secondary connecting block 40.

[0036] Based on the above structure of the automatic riveting device of the present invention, the rivet 500 output from the lower port of the rivet feeding tube 41 can be clamped by the clamping assembly 43 after reaching it; then the lifting swing shaft 422 of the extension swing cylinder 42 extends downward and rotates until the rivet 500 on the clamping assembly 43 is located directly below the head of the rivet gun 300; then the head of the rivet gun 300 can be inserted into the rivet 500 by retracting the lifting swing shaft 422 of the extension swing cylinder 42; the lifting operation of the lifting platform 200 can make the rivet gun 300 carrying the rivet 500 approach or move away from the target position.

[0037] Based on the automatic riveting device provided by this invention, the feeding and riveting actions of the rivet 500 are completed automatically during the riveting process, completely replacing manual labor, improving production efficiency and quality, and significantly reducing labor costs. This solves the problems of high labor costs and the inability to guarantee quality during manual assembly. When integrated with automated and intelligent production lines, it can operate continuously around the clock, making production more intelligent and efficient. Furthermore, this invention uses a shock-absorbing mounting base as the supporting structure for the lifting platform 200, the rivet gun 300, and the rivet feeding mechanism 400, which can effectively reduce the adverse effects of vibration from the rivet gun 300 during operation on the automatic riveting device.

[0038] As a preferred embodiment of the present invention, reference is made to... Figure 6, Figure 7 , Figure 8 As shown, the shock-absorbing mounting base 100 in this specific embodiment includes a fixed plate 11, a floating plate 12, elastic shock-absorbing pads 13, and a locking mechanism. In the automatic riveting device, the lifting platform 200 is disposed on the side of the floating plate 12 of the shock-absorbing mounting base 100. The floating plate 12 and the fixed plate 11 are disposed opposite to each other and connected by a plurality of elastic shock-absorbing pads 13. The locking mechanism has a first working position for locking the positional relationship between the floating plate 12 and the fixed plate 11 and a second working position for releasing the locked positional relationship between the two.

[0039] It should be understood that the elastic damping pad 13 in this embodiment has a certain elasticity. It can be a rubber elastic block or other modules with similar functions. Since the floating plate 12 is connected to the fixed plate 11 through the elastic damping pad 13, when the locking mechanism is in the first working position, the locking mechanism locks the positional relationship between the floating plate 12 and the fixed plate 11, which can ensure that the rivet gun 300 has better positional accuracy in the riveting process. At this time, the elastic damping pad 13 can reduce the adverse effects of the vibration of the rivet gun 300 during operation on the automatic riveting device. Correspondingly, when the locking mechanism is in the second working position, the floating plate 12 can float elastically relative to the fixed plate 11 within a certain range, which can reduce the probability of damage to the parts on the device during rapid operation.

[0040] For more specific details, please refer to Figure 6 , Figure 7 , Figure 8 As shown, the locking mechanism includes a vertical protrusion 141 fixed to the floating plate 12 and protruding towards the fixed plate 11, two sets of top pins 142 symmetrically arranged on both sides of the vertical protrusion 141 in the width direction, and two sets of opposing cylinders 143 that drive the two sets of top pins 142 to move relative to each other to press against the vertical protrusion 141. As shown in the figure, in this specific embodiment, the two sets of top pins 142 include two first top pins 1421 located on the first side of the vertical protrusion 141 and two second top pins 1422 located on the second side of the vertical protrusion 141. The two sets of opposing cylinders 143 include a first cylinder for driving the two first top pins 1421 and a second cylinder for driving the two second top pins 1422.

[0041] Preferably, in this embodiment, the end of the top pin 142 facing the vertical protrusion 141 is tapered, and the vertical protrusion 141 is provided with a mating hole 1410 for the top pin 142 to be inserted and engaged, thus fixing the cylinder body of the top cylinder 143 relative to the fixed plate 11. In a specific implementation, a side plate 110 is fixed on each side of the fixed plate 11, and the cylinder body of the top cylinder 143 is fixed to the side plate 110 to achieve a fixed arrangement relative to the fixed plate 11. Based on this arrangement, when the top cylinder 143 drives the top pin 142 to press against the vertical protrusion 141, the positional relationship between the floating plate 12 and the fixed plate 11 can be locked.

[0042] Further preferably, the locking mechanism also has a horizontal guide assembly that limits the movement of two sets of top pins 142 toward each other. Referring to the figure, the horizontal guide assembly in this embodiment includes a horizontal guide rod 144 and a pair of sliders 145 slidably engaged with the horizontal guide rod 144. The horizontal guide rod 144 is fixedly disposed relative to the fixed plate 11. The pair of sliders 145 are distributed on both sides of the vertical protrusion 141 and are respectively connected to the output shaft 1430 of the corresponding side counter-cylinder 143. The top pins 142 are disposed on the corresponding side sliders 145.

[0043] More specifically, this embodiment includes two horizontal guide rods 144 arranged parallel to each other vertically. Each horizontal guide rod 144 is connected to the corresponding side plate 110 through its two ends and fixed relative to the fixing plate 11. A pair of sliders 145 includes a first slider 1451 disposed on the first side of the vertical protrusion 141 and a second slider 1451 disposed on the second side of the vertical protrusion 141. The first slider 1451 and the second slider 1451 are slidably engaged with the two horizontal guide rods 144. Two first top pins 1421 are disposed on the first slider 1451 and two second top pins 1422 are disposed on the second slider 1452. The first slider 1451 and the second slider 1452 are respectively connected to the output shaft 1430 of the corresponding side-mounted cylinder 143.

[0044] It is understood that the number and layout of the top pin 142, the counter-cylinder 143, and the horizontal guide rod 144 involved in this invention are not limited to those shown in the illustrated embodiments.

[0045] In some other embodiments of the present invention, combined with Figure 3 , Figure 9 , Figure 10 As shown, the shock-absorbing mounting base 100 also includes an intermediate plate 10 fixed to the side of the floating plate 12 away from the fixed plate 11. The fixed plate 11 has an extension plate 111 extending from the bottom toward the floating plate 12. The shock-absorbing mounting base 100 also has a bottom shock-absorbing pad 15 disposed between the bottom of the intermediate plate 10 and the top of the extension plate 111. In this embodiment, the intermediate plate 10 can be adjusted in size according to the specifications and space occupied by the component to be installed (including the rivet gun 300, the rivet feeding mechanism 400, etc.). In this way, the floating plate 12 of the same size can be adapted to different specifications of automatic riveting devices by matching the intermediate plate 100 of different sizes, which is more suitable for mass production and manufacturing.

[0046] Furthermore, in this embodiment, the intermediate plate 10 serves as the mounting side of the shock-absorbing mounting base 100 for mounting components such as the rivet gun 300. By providing bottom shock-absorbing pads 15 between the bottom of the intermediate plate 10 and the top of the extension plate 111, the shock-absorbing effect of the shock-absorbing mounting base 100 can be further improved. In specific implementation, two bottom shock-absorbing pads 15 are spaced apart on the top of the extension plate 111, and a support plate 151 connecting the two bottom shock-absorbing pads 15 is provided on the top of the two bottom shock-absorbing pads 15. The intermediate plate 10 is supported on the support plate 151 by a transition plate 101 provided at the bottom.

[0047] In other specific embodiments of the present invention, combined with Figure 3 , Figure 10 As shown, the automatic riveting device also includes a vertical guide rail 21, a lifting cylinder 22, and a flexible compensation cylinder 23. The cylinder bodies of both the vertical guide rail 21 and the lifting cylinder 22 are located on the side of the floating plate 12 away from the fixed plate 11 and are fixedly mounted relative to the floating plate 12. In the illustrated embodiment, the cylinder bodies of both the vertical guide rail 21 and the lifting cylinder 22 are fixed to the intermediate plate 10. The lifting platform 200 is slidably fitted onto the vertical guide rail 21, the cylinder body of the flexible compensation cylinder 23 is fixed to the upper side of the lifting platform 200, and the output shaft of the flexible compensation cylinder 23 is connected to the downwardly extending output shaft of the lifting cylinder 22.

[0048] It is understandable that, in specific applications, the lifting cylinder 22 provides power for the lifting of the lifting platform 200; the output shaft of the flexible compensation cylinder 23 is controlled by a solenoid valve to remain in an extended state, i.e., the output shaft is held in place by air. Specifically, when the rivet gun 300 of the automatic riveting device is working, it generates a downward force to embed the rivet into the workpiece, and generates an upward reaction force. When the upward reaction force is generated, since the output shaft of the flexible compensation cylinder 23 is held in place by air, the output shaft will retract slightly and then return to the extended state. This process can effectively counteract this upward reaction force, reduce the vibration generated during riveting, and thus improve the positional accuracy of riveting and the life of the rivet gun 300.

[0049] As a further preferred embodiment of the invention, in some embodiments, the automatic riveting device further includes an anti-jamming cylinder 44 to prevent the riveting feeding mechanism 400 from jamming. (See reference) Figure 5 , Figure 10 As shown, the cylinder body of the anti-jamming cylinder 44 is fixedly mounted relative to the shock-absorbing mounting base 100. The output shaft of the anti-jamming cylinder 44 faces downward and is configured to impact the lifting platform 200 or be fixed to the fixing block 201 of the lifting platform 200 when extended. Specifically, in this embodiment, the cylinder body of the anti-jamming cylinder 44 is fixed to one side of the intermediate plate 10, and the output shaft of the anti-jamming cylinder 44 impacts the fixing block 201 fixed to the lifting platform 200 when extended, wherein the fixing block 201 is fixed to one side of the lifting platform 200.

[0050] In specific application scenarios, the gripper assembly 43 clamps the rivet 500 and is first moved by the extension cylinder 42 to a position directly below the head of the rivet gun 300. Then, the lifting swing shaft 422 of the extension cylinder 42 retracts, allowing the head of the rivet gun 300 to fit into the rivet 500. During the process of the rivet gun 300's head fitting into the rivet 500, if the rivet 500 and the head of the rivet gun 300 are aligned, the head of the rivet gun 300 can fit into the rivet 500 relatively smoothly; however, if the rivet 500 and the head of the rivet gun 300 are not aligned, the head of the rivet gun 300 may not be able to smoothly extend into the rivet 500. At this time, the output shaft of the anti-jamming cylinder 44 will suddenly extend, generating a vibration, and pushing out the jammed rivet 500.

[0051] In another preferred embodiment, the automatic riveting device also includes a stroke sensor 24 that senses the stroke of the lifting platform 200. As a specific implementation, see reference... Figure 10 As shown, the stroke sensor 24 can be configured as a spring sensor. In specific implementation, the main body of the spring sensor is fixed to the intermediate plate 10, and its free end is subjected to the pressure of the fixed block 201 on the lifting platform 200. When the lifting platform 200 moves up and down, the spring compression of the spring sensor can reflect the position of the lifting platform 200. Based on this, in the specific application of the automatic riveting device, the stroke sensor can convert the displacement distance into an electrical signal and transmit it to the control module. The stroke sensor 24 is used to monitor the position of the rivet 500 and the current riveting status.

[0052] Further, refer to Figure 5 As shown, the gripper assembly 43 includes a gripper cylinder 430 fixed to the lower end of the lifting swing shaft 422 and an optical fiber sensor 433 located in the gripper 4300 of the gripper cylinder 430 with an induction rivet 500.

[0053] In this specific embodiment, the gripper assembly 43 is fixed to the lower end of the lifting swing shaft 422 via an upper connecting plate 431. The connecting plate 431 has a receiving hole 4310 for the rivet 500 to enter. The gripper cylinder 430 has a pair of opposing grippers 4300 below the receiving hole 4310. The gripper cylinder 430 can grip or release the rivet 500 entering through the receiving hole 4310 by controlling the distance between the pair of grippers 4300. A lower support plate 432 is also provided below the gripper cylinder 430 to prevent the rivet 500 from falling directly. It can be understood that the gripper 4300 has a channel through which the sensing signal of the fiber optic sensor 433 passes.

[0054] Further integration Figure 1 and Figure 11As shown, the automatic riveting device also includes an electrical control box 600 and a front baffle 700. In specific implementation, the electrical control box 600 is fixed to the back of the intermediate plate 10, and the front baffle 700 is fixedly installed opposite the cylinder body 421 of the swing cylinder 42. The front baffle 700 is equipped with an optical fiber amplifier 70, a solenoid valve 71, a pressure reducing valve 72, a stroke sensor signal amplifier 73, an oil mist lubricator 74, and a single-control solenoid valve 75. Among them, the fiber amplifier 70 is used to amplify the signal of the fiber sensor 433 and then transmit it to the control module in the electrical control box 600; the solenoid valve 71 is used to control the action of pneumatic actuators such as the lifting cylinder 22, the flexible cylinder 23, the swing cylinder 42, the gripper cylinder 430, and the anti-jamming cylinder 44; the pressure reducing valve 72 is used to adjust the pressure of the air circuit in the automatic riveting device; the stroke sensor signal amplifier 73 is used to amplify the signal of the stroke sensor 24; the oil mist lubricator 74 is used to lubricate the air circuit; and the single-control solenoid valve 75 is used to individually control the top cylinder 143 in the shock-absorbing mounting base 100.

[0055] refer to Figure 12 As shown, the automatic riveting device of the present invention also includes a robotic arm 800. The side of the shock-absorbing mounting base 100 away from the lifting platform 200 is fixed to the robotic arm 800. Under the control of the robotic arm 800, the automatic riveting device can operate within a large range, thus better adapting to actual riveting application scenarios.

[0056] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0057] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic pull-rivet device characterized by comprising: The device includes a shock-absorbing mounting base, a lifting platform, a rivet gun, and a rivet feeding mechanism. The lifting platform is jacked up and down on one side of the shock-absorbing mounting base. The rivet gun is fixed to the lifting platform. The rivet feeding mechanism includes a rivet feeding tube, a swing cylinder, and a gripper assembly. The rivet feeding tube is fixed relative to the lifting platform. The swing cylinder includes a cylinder body fixed relative to the lifting platform and a lifting swing shaft extending downward from the lower end of the cylinder body. The gripper assembly is fixed to the lower end of the lifting swing shaft via an upper connecting plate to perform lifting and swinging movements under the drive of the swing cylinder. The upper connecting plate has a receiving hole for rivets to enter. The gripper assembly is used to transfer the rivets output from the lower end of the rivet feeding tube to the head of the rivet gun. The shock-absorbing mounting base includes a fixed plate, a floating plate, elastic shock-absorbing pads, and a locking mechanism. The lifting platform is located on the side of the floating plate of the shock-absorbing mounting base. The floating plate and the fixed plate are arranged opposite to each other and connected by a plurality of elastic shock-absorbing pads. The locking mechanism has a first working position for locking the positional relationship between the floating plate and the fixed plate and a second working position for releasing the locked positional relationship between the two.

2. The automatic riveting device according to claim 1, characterized in that, The locking mechanism includes a vertical protrusion fixed to the floating plate and protruding towards one side of the fixed plate, two sets of top pins symmetrically arranged on both sides of the width direction of the vertical protrusion, and two sets of opposing cylinders that drive the two sets of top pins to move relative to each other to press against the vertical protrusion. The ends of the top pins facing the vertical protrusion are tapered, and the vertical protrusion is provided with mating holes for the top pins to be inserted and engaged. The cylinder bodies of the opposing cylinders are fixedly arranged relative to the fixed plate.

3. The automatic riveting device according to claim 2, characterized in that, The locking mechanism also has a horizontal guide assembly that limits the movement of the two sets of top pins in opposite directions. The horizontal guide assembly includes a horizontal guide rod and a pair of sliders that are slidably engaged with the horizontal guide rod. The horizontal guide rod is fixedly disposed relative to the fixed plate. The pair of sliders are distributed on both sides of the vertical protrusion and are respectively connected to the output shaft of the corresponding side of the opposing cylinder. The top pin is disposed on the corresponding side of the slider.

4. The automatic riveting device according to claim 1, characterized in that, The shock-absorbing mounting base also includes an intermediate plate fixed to the side of the floating plate away from the fixed plate, the fixed plate having an extension plate extending from the bottom toward the side of the floating plate, and the shock-absorbing mounting base also having a bottom shock-absorbing pad disposed between the bottom of the intermediate plate and the top of the extension plate.

5. The automatic riveting device according to any one of claims 1-4, characterized in that, The automatic riveting device also includes a vertical guide rail, a lifting cylinder, and a flexible compensation cylinder. The vertical guide rail and the cylinder body of the lifting cylinder are both located on the side of the floating plate away from the fixed plate and are fixed relative to the floating plate. The lifting platform is slidably fitted on the vertical guide rail. The cylinder body of the flexible compensation cylinder is fixed to the upper side of the lifting platform, and the output shaft of the flexible compensation cylinder is connected to the downwardly extending output shaft of the lifting cylinder.

6. The automatic riveting device according to any one of claims 1-4, characterized in that, The automatic riveting device also includes an anti-jamming cylinder to prevent the nail feeding mechanism from jamming. The cylinder body of the anti-jamming cylinder is fixedly disposed relative to the shock-absorbing mounting base. The output shaft of the anti-jamming cylinder faces downward and is configured to impact the lifting platform or a fixing block fixed to the lifting platform when extended.

7. The automatic riveting device according to any one of claims 1-4, characterized in that, The automatic riveting device also has a stroke sensor that senses the travel of the lifting platform.

8. The automatic riveting device according to any one of claims 1-4, characterized in that, The gripper assembly includes a gripper cylinder fixed to the lower end of the lifting swing shaft and an optical fiber sensor with an induction rivet located inside the gripper cylinder's jaws.

9. The automatic riveting device according to any one of claims 1-4, characterized in that, The automatic riveting device also includes a robotic arm, and the shock-absorbing mounting base is fixed to the robotic arm on the side away from the lifting platform.

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