A hexagonal pull-up nut twisting device

Abstract

The application relates to a hexagonal pull rivet nut crimping device, which comprises a mounting block, a clamping jaw air cylinder and two mounting seats. The hexagonal pull rivet nut crimping device further comprises a crimping assembly, which comprises a mounting plate and two clamping pieces slidably connected to the mounting plate. The mounting plate is provided with a feeding hole for inserting a pull rivet nut. The two clamping pieces are provided with crimping grooves at one end corresponding to the feeding hole. The mounting plate is detachably connected to the mounting block. The other end of the two clamping pieces is respectively detachably connected to the two mounting seats. Under the drive of the clamping jaw air cylinder, the two clamping pieces move towards each other and crimp the pull rivet nut inserted into the crimping groove. The technical scheme of the application can realize reliable crimping operation of pull rivet nuts with various outer circle diameter specifications in a low-cost mode through a modular replaceable structure mode without overall replacement of the equipment.

Description

Technical Field

[0001] This invention relates to the field of riveting equipment technology, and in particular to a hexagonal rivet nut rolling device. Background Technology

[0002] Riveting is a cold joining technique used to connect two or more metal sheets. Rivet nuts, also known as rivet nuts or riveting caps, are used in the fastening of various metal sheets or pipes in manufacturing industries. Riveting connections do not require tapping internal threads and offer the advantage of a strong connection. In actual production, hexagonal rivet nuts require a specific angle during loading to fit the hexagonal bottom hole of the parts to be riveted. Typically, the hexagonal rivet nut is required to be clamped and positioned parallel or perpendicular to the rivet gun; therefore, the nut angle needs to be corrected after the rivet is fed in.

[0003] In the existing technology, some riveting mechanisms use rigidly connected grippers. The angle of the rivet nut is adjusted by the mutual rubbing of positioning blocks. The positioning blocks and the rivet nut collide rigidly, which can easily cause damage to the surface of the positioning blocks and the rivet nut, affecting the service life and riveting quality.

[0004] To address the aforementioned deficiencies, patent CN120533454A discloses a rivet rolling mechanism, which includes a mounting block, relatively sliding clamping pieces, and a gripper cylinder for driving the clamping pieces to move relative to each other. The top surface of the mounting block is provided with a feeding hole corresponding to the rivet nut, and the side of the feeding block is provided with a through groove communicating with the feeding hole. The two clamping pieces are slidably disposed in the through groove. The clamping pieces are respectively connected to the corresponding fingers of the gripper cylinder through mounting seats. The clamping pieces are respectively hinged to the corresponding mounting seats through positioning pins. The two clamping pieces move closer or further apart from each other by rotating around the corresponding positioning pins.

[0005] Although the aforementioned rivet rolling mechanism can prevent rigid collisions through elastic contact between the clamping plates and the rivet nut, protecting both, the rolling groove structure and the feeding hole of this mechanism are designed for the outer diameter of a single-specification rivet nut, thus only accommodating one size of hexagonal rivet nut. When users need to perform rivet rolling operations on rivet nuts with different outer diameters, the entire rivet rolling mechanism must be replaced, resulting in poor versatility, high equipment costs, and difficulty in meeting the needs of multi-specification mixed-line production.

[0006] Therefore, there is an urgent need for a rivet rolling mechanism that does not require a complete replacement of the equipment and has reliable positioning, so as to realize the rivet rolling operation of various specifications of hexagonal rivet nuts at a lower cost. Summary of the Invention

[0007] This invention provides a hexagonal rivet nut rolling device, which can reliably roll rivets of various external diameter specifications in a low-cost manner through a modular and replaceable structure without replacing the entire equipment.

[0008] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A hexagonal rivet nut rolling device includes a mounting block, a gripper cylinder disposed on the mounting block, and two mounting seats respectively hinged to the two gripper portions of the gripper cylinder. The hexagonal rivet nut rolling device further includes a rolling assembly, which includes a mounting plate and two clamping pieces slidably connected to the mounting plate. The mounting plate has a feeding hole for inserting a rivet nut, and one end of each of the two clamping pieces forms a rolling groove corresponding to the feeding hole. The mounting plate is detachably connected to the mounting block. The other ends of the two clamping pieces are detachably connected to the two mounting seats, so that under the drive of the gripper cylinder, the two clamping pieces move towards each other and roll the rivet nut inserted into the rolling groove.

[0009] The beneficial effects of this invention are as follows: the rivet rolling assembly is an independent modular structure. Operators can detachably connect the selected rivet rolling assembly to the mounting block, allowing for tooling switching for different specifications of rivet nuts without replacing the main structure such as the mounting block, gripper cylinder, and mounting base. This effectively solves the problem in related technologies where the rivet rolling mechanism, due to the fixed dimensions of the feeding hole and rolling groove, can only adapt to a single specification of hexagonal rivet nuts. It avoids the cumbersome operation and high cost of replacing the entire rivet rolling mechanism for each specification, achieving stable and reliable rivet rolling operations for hexagonal rivet nuts with various external diameter specifications at a lower cost and higher efficiency, thus improving the equipment's versatility and multi-specification mixed-line production capacity.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the mounting block is provided with a first connecting seat, and the mounting plate is provided with a second connecting seat, the second connecting seat and the first connecting seat being connected by a first fastening rod.

[0012] Furthermore, the first connector has a first insertion hole, the second connector has a second insertion hole directly opposite the first insertion hole, and the first fastening rod passes through the second insertion hole and is detachably connected to the first insertion hole.

[0013] Furthermore, each of the two clamping pieces is provided with a slide rail at its other end, and the slide rail is slidably connected to a slide block; each of the two mounting bases is provided with a second fastening rod perpendicular to the slide rail, and the second fastening rod is connected to the corresponding slide block.

[0014] Furthermore, the mounting base has a through hole, and the slide has a plurality of intermediate positioning holes, each of the intermediate positioning holes extending at intervals along the sliding direction of the slide; any one of the intermediate positioning holes can communicate with the through hole, and the second fastening rod can be inserted into the connected intermediate positioning hole and the through hole.

[0015] Furthermore, the slide rail has multiple end positioning holes, each of which is spaced apart along the length of the slide rail, and any one of the end positioning holes can communicate with the intermediate positioning hole. The second fastening rod can be inserted into the interconnected intermediate positioning hole and the end positioning hole.

[0016] Furthermore, the length of the slide rail is greater than the width of the clamp, and the maximum distance between the slide rail and the mounting plate is greater than the sliding distance of the clamp.

[0017] Furthermore, a handle is provided on the upper side of the slide, and the handle extends out of the mounting base and the clamp.

[0018] Furthermore, the gripper portion is provided with a central shaft and a compression spring, the middle part of the mounting base is rotatably connected to the central shaft, the two ends of the mounting base are perpendicular to each other relative to the central shaft, and one end of the mounting base is connected to the gripper portion through the compression spring, and the other end of the mounting base is detachably connected to the clamping plate. The mounting plate has a through groove for the clip to slide. Guide blocks are provided on opposite sides of the mounting plate. Guide strips extending into the through groove are provided on the facing sides of the two guide blocks. The end face of the guide strip is provided with a guide surface corresponding to the clip.

[0019] Furthermore, the rubbing groove includes an arc groove and a V-shaped groove arranged in sequence, with a smooth transition between the arc groove and the V-shaped groove. The opening angle of the V-shaped groove is 120°. During the process of the two gripper portions approaching each other, the V-shaped groove and the rivet nut contact each other before the clamping plate and the corresponding guide surface come into contact. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the hexagonal rivet nut rolling device of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of section A; Figure 3 For the present invention Figure 1 A partial structural sectional view; Figure 4 For the present invention Figure 3 Enlarged view of section B; Figure 5 This is an enlarged view of a partial structure of the present invention; Figure 6 For the present invention Figure 3 Enlarged view of section C.

[0021] The attached diagram lists the components represented by each number as follows: 1. Mounting block; 11. First connector; 111. First socket; 12. Socket; 2. Gripper cylinder; 21. Gripper part; 22. Central shaft; 23. Compression spring; 3. Mounting base; 31. Through hole; 32. Receiving platform; 4. Nail rolling assembly; 41. Mounting plate; 411. Feeding hole; 412. Second connecting seat; 4121. Second insertion hole; 413. Insert block; 414. Through groove; 415. Guide block; 416. Guide strip; 4161. Guide surface; 417. Sensor; 42. Clamping piece; 43. Rolling groove; 431. Arc groove; 432. V-groove; 5. Rivet nuts; 6. First fastening rod; 7. Slide rail; 71. End positioning hole; 72. Slide groove; 8. Slide; 81. Center positioning hole; 82. Slider; 83. Handle; 9. Second fastening rod. Detailed Implementation

[0022] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0023] Example 1 like Figures 1 to 6 A hexagonal rivet nut rolling device includes a mounting block 1, a gripper cylinder 2 disposed on the mounting block 1, and two mounting seats 3 respectively hinged to the two gripper portions 21 of the gripper cylinder 2; the hexagonal rivet nut rolling device also includes a rolling assembly 4, which includes a mounting plate 41 and two clamping pieces 42 slidably connected to the mounting plate 41. The mounting plate 41 has a feeding hole 411 for inserting a rivet nut 5, and one end of the two clamping pieces 42 forms a rolling groove 43 corresponding to the feeding hole 411. The mounting plate 41 is detachably connected to the mounting block 1; the other ends of the two clamping pieces 42 are detachably connected to the two mounting seats 3 respectively, so that under the drive of the gripper cylinder 2, the two clamping pieces 42 move towards each other and roll the rivet nut 5 inserted into the rolling groove 43.

[0024] The beneficial effects of this embodiment are as follows: During the rivet rolling process, the gripper cylinder 2 drives the two mounting seats 3 to move relative to each other, causing the two clamping plates 42 to slide relative to each other along the mounting plate 41, so that the two rolling grooves 43 clamp and roll the rivet nut 5 inserted into the feeding hole 411 from both sides. Since the rivet rolling assembly 4 adopts a detachable connection method, when it is necessary to switch to a rivet nut 5 with a different outer diameter, it is only necessary to replace the rivet rolling assembly 4 of the corresponding specification to continue the operation.

[0025] When using this hexagonal rivet nut rolling device, first select the matching rolling assembly 4 according to the outer diameter specification of the rivet nut 5 to be processed.

[0026] The rivet assembly 4 is an independent modular structure. The operator can detachably connect the selected rivet assembly 4 to the mounting block 1, and detachably connect the other ends of the two clamping plates 42 to the two mounting seats 3 respectively. The two mounting seats 3 are respectively hinged to the two clamping jaws 21 of the clamping jaw cylinder 2.

[0027] Therefore, without replacing the main structure such as mounting block 1, gripper cylinder 2, and mounting base 3, tooling switching for different specifications of rivet nuts 5 can be completed. This device effectively solves the problem in related technologies where the rivet rolling mechanism can only be adapted to a single specification of hexagonal rivet nuts due to the fixed dimensions of the feeding hole 411 and the rolling groove 43. It avoids the cumbersome operation and high cost of replacing the entire rivet rolling mechanism for each specification, and achieves stable and reliable rivet rolling operation for hexagonal rivet nuts 5 with multiple outer diameter specifications at a lower cost and higher efficiency, improving the equipment's versatility and multi-specification mixed-line production capacity.

[0028] Example 2 like Figure 1 and Figure 2 Based on embodiment 1, the mounting block 1 is provided with a first connecting seat 11, and the mounting plate 41 is provided with a second connecting seat 412. The second connecting seat 412 is connected to the first connecting seat 11 through a first fastening rod 6.

[0029] The advantage of adopting the preferred solution in the above embodiments is that when it is necessary to perform operations on rivet nuts 5 with different outer circle diameters, the operator only needs to replace the rivet rolling assembly 4.

[0030] Specifically, by disassembling the first fastening rod 6, the fixed connection between the second connecting seat 412 on the mounting plate 41 and the first connecting seat 11 on the mounting block 1 can be released, thereby quickly removing the entire rivet assembly 4 from the equipment. Subsequently, the rivet assembly 4 adapted to the new specification rivet nut 5 is placed accordingly, aligning the second connecting seat 412 of the assembly with the first connecting seat 11 on the mounting block 1, and then quickly locking and fixing it by inserting the first fastening rod 6.

[0031] This not only ensures a secure assembly between the rivet assembly 4 and the mounting block 1, guaranteeing that the overall structure does not shift or loosen when the gripper cylinder 2 drives the clamping plate 42 to perform high-frequency rivet operations, but also simplifies the assembly and disassembly steps by utilizing the connection method of the first fastening rod 6. This makes the replacement of the rivet assembly 4 more convenient and precise, eliminating the need for complex debugging tools or significant modifications to the main body of the equipment. It reduces the maintenance difficulty and time cost when switching between multiple specifications, ensuring the efficiency and positioning reliability of modular replacement.

[0032] Example 3 like Figure 1 and Figure 2 Based on embodiments 1 and 2, the first connecting seat 11 has a first insertion hole 111, the second connecting seat 412 has a second insertion hole 4121 directly opposite the first insertion hole 111, and the first fastening rod 6 passes through the second insertion hole 4121 and is detachably connected to the first insertion hole 111.

[0033] The beneficial effect of adopting the preferred solution in the above embodiments is that, during the replacement of the rivet assembly 4, when the operator attaches the second connecting seat 412 on the mounting plate 41 to the first connecting seat 11 of the mounting block 1, the initial positioning of the two can be quickly completed by utilizing the alignment of the first insertion hole 111 and the second insertion hole 4121. Subsequently, the first fastening rod 6 is passed through the second insertion hole 4121 in sequence and screwed into or engaged in the first insertion hole 111, thereby achieving rapid and stable installation.

[0034] In one example, the first fastening rod 6 is threaded with multiple nuts, each nut being distributed and abutting against the opposite sides of the first connecting seat 11 and the opposite sides of the second connecting seat 412, thereby locking the first connecting seat 11 and the second connecting seat 412. In another example, the first fastening rod 6 may be a bolt, the rod of which passes through the second insertion hole 4121 and is threaded to the wall of the first insertion hole 111.

[0035] Based on the above embodiment, a socket 12 is provided on the mounting block 1. The mounting plate 41 is provided with a plug 413, which is adapted to and inserted into the socket 12. When the rivet assembly 4 is installed on the mounting block 1, the socket 12 can position the rivet assembly 4 for installation, enabling quick and accurate installation. After inserting the plug 413 into the socket 12, the first fastening rod 6 can then be installed.

[0036] Example 4 like Figures 3-5 Based on embodiments 1-3, each of the two clamping pieces 42 is provided with a slide rail 7 at the other end, and the slide rail 7 is slidably connected to a slide seat 8; each of the two mounting seats 3 is provided with a second fastening rod 9 perpendicular to the slide rail 7, and the second fastening rod 9 is connected to the corresponding slide seat 8.

[0037] The beneficial effect of the preferred solution in the above embodiments is that when using the hexagonal rivet nut rolling device and replacing the rolling assembly 4, the relative positions of the slide rails 7 at the other end of the two clamps 42 and the two mounting seats 3 will change due to the differences in the position of the rolling grooves 43 of the clamps 42 of different specifications and the installation dimensions of the clamps 42 themselves. At this time, the operator can slide along the slide rails 7 to adjust the position of the slide block 8 until the slide block 8 is aligned with the corresponding mounting seat 3, and then tighten the second fastening rod 9 to connect the slide block 8 to the mounting seat 3, thereby realizing the connection between the mounting seat 3 and the clamp 42.

[0038] This eliminates installation errors caused by variations in the specifications of the clamping piece 42, allowing the same mounting base 3 to accommodate various sizes of clamping pieces 42. Power from the gripper cylinder 2 is accurately transmitted to the clamping piece 42 without requiring replacement of the main drive components. This improves the compatibility and fault tolerance of modular replacement and ensures that the clamping piece 42 maintains a stable and reliable clamping force under different specifications, guaranteeing the positioning accuracy of the nail-rolling operation.

[0039] Based on the above embodiment, the extension direction of the slide rail 7 is parallel to the extension direction of the first fastening rod 6. This allows the slide rail 7 to slide along the extension direction of the first fastening rod 6 and change the position of the slide block 8 when the mounting plate 41 and the mounting block 1 are installed via the first fastening rod 6, thereby achieving a smooth connection between the slide rail 7 and the slide block 8.

[0040] Example 5 like Figures 3-5 Based on embodiments 1-4, the mounting base 3 has a through hole 31, and the slide 8 has a plurality of intermediate positioning holes 81. Each intermediate positioning hole 81 extends at intervals along the sliding direction of the slide 8. Any intermediate positioning hole 81 can communicate with the through hole 31, and the second fastening rod 9 can be inserted into the connected intermediate positioning hole 81 and the through hole 31.

[0041] The beneficial effect of adopting the preferred solution in the above embodiments is that when adjusting the position of the slide block 8 along the slide rail 7, the operator can slide the slide block 8 according to the installation requirements of the current specification clamp 42, so that any intermediate positioning hole 81 on the slide block 8 is aligned and connected with the through hole 31 on the mounting base 3. Subsequently, the second fastening rod 9 is inserted into the connected intermediate positioning hole 81 and through hole 31, so that the slide block 8 and the mounting base 3 can be firmly locked.

[0042] Multiple spaced intermediate positioning holes 81 provide multiple levels of precise adjustment. This not only prevents the slide block 8 from sliding randomly during adjustment and ensures the positional stability of the clamping plate 42 during reciprocating rubbing, but also improves the connection rigidity and positioning accuracy between the clamping plate 42 and the mounting base 3 through the hole-shaft fit. This ensures that when rubbing rivet nuts 5 with different outer circle diameters, the two clamping plates 42 can always maintain accurate alignment and clamping force.

[0043] Based on the above embodiment, the mounting base 3 is provided with a receiving platform 32, and the lower side of the slide 8 abuts against the receiving platform 32. When installing the rivet assembly 4, the receiving platform 32 can support and bear the force on the slide 8, so as to facilitate the quick and accurate installation of the second fastening rod 9.

[0044] Example 6 like Figures 3-5 Based on embodiments 1-5, the slide rail 7 has multiple end positioning holes 71, each end positioning hole 71 is distributed at intervals along the length direction of the slide rail 7, and any end positioning hole 71 can communicate with the middle positioning hole 81, and the second fastening rod 9 can be inserted into the connected middle positioning hole 81 and end positioning hole 71.

[0045] The beneficial effect of the preferred solution in the above embodiments is that when the two clamping plates 42 are driven by the clamping cylinder 2 to apply a large lateral rolling force to the rivet nut 5, the clamping plates 42 and the slide rail 7 connected thereto will be subjected to a large overturning torque, which is prone to tilting. At this time, by passing the second fastening rod 9 through the through hole 31 of the mounting base 3, the middle positioning hole 81 of the slide block 8, and the end positioning hole 71 on the slide rail 7 in sequence, the slide block 8 and the slide rail 7 are simultaneously locked on the mounting base 3 by the second fastening rod 9.

[0046] In this way, it can effectively prevent the slide block 8 from sliding or displacing unexpectedly relative to the slide rail 7 when the clamp 42 is subjected to eccentric load or slight tilt. This enhances the anti-overturning ability and overall rigidity of the clamp 42 under stress, ensuring that the two clamps 42 always maintain a relatively stable force during the rolling process, and avoiding the decrease in rolling accuracy or equipment damage caused by loose connection.

[0047] In some examples, the second fastening rod 9 can be threaded into the intermediate positioning hole 81. In other examples, the second fastening rod 9 can be threaded into the end positioning hole 71. This ensures the stable installation of the second fastening rod 9.

[0048] Based on the above embodiment, the slide rail 7 has a slide groove 72, and the slide block 8 is provided with a slider 82 that is adapted to and slidably connected to the slide groove 72. The slider 82 is engaged in the slide groove 72 to reduce the possibility of the slider 82 disengaging from the slide rail 7 during sliding.

[0049] Among them, the groove 72 can be a groove structure with an "L" shaped, "T" shaped or dovetail groove shape in cross section.

[0050] Example 7 like Figure 3 and Figure 4Based on embodiments 1-6, the length of the slide rail 7 is greater than the width of the clamp 42, and the maximum distance between the slide rail 7 and the mounting plate 41 is greater than the sliding distance of the clamp 42.

[0051] The advantage of adopting the preferred solution in the above embodiments is that the length of the slide rail 7 is greater than the width of the clamp 42, which provides a longer adjustment stroke for the slide block 8. Operators can freely adjust the position of the slide block 8 relative to the mounting base 3 within a wider range, thereby adapting to a wider variety of clamps 42 with different sizes, thus improving the versatility of the device.

[0052] Meanwhile, since the maximum distance between the slide rail 7 and the mounting plate 41 is greater than the sliding distance of the clamping plate 42, when the clamping cylinder 2 drives the two clamping plates 42 to move towards each other to rub the rivet nut 5, it can prevent the end or connecting part of the clamping plate 42 from physically interfering or colliding with the fixed mounting plate 41 during the reciprocating sliding process, thus preventing the risk of wear and jamming of parts and ensuring the smoothness of the rivet rolling operation and the safety of equipment operation.

[0053] Example 8 like Figure 3 and Figure 4 Based on embodiments 1-7, a handle 83 is provided on the upper side of the slide 8, and the handle 83 extends out of the mounting base 3 and the clamp 42.

[0054] The advantage of adopting the preferred solution in the above embodiments is that it enables the adjustment of the position of the slide block 8 by applying force through the handle 83.

[0055] Example 9 like Figures 3-5 Based on embodiments 1-8, the gripper part 21 is provided with a central shaft 22 and a compression spring 23. The middle part of the mounting base 3 is rotatably connected to the central shaft 22. The two ends of the mounting base 3 relative to the central shaft 22 are perpendicular to each other, and one end of the mounting base 3 is connected to the gripper part 21 through the compression spring 23. The other end of the mounting base 3 is detachably connected to the clamping piece 42. The mounting plate 41 has a through groove 414 for the clamping piece 42 to slide. The mounting plate 41 has guide blocks 415 on opposite sides. The sides of the two guide blocks 415 facing each other have guide strips 416 extending into the through groove 414. The end face of the guide strips 416 has a guide surface 4161 corresponding to the clamping piece 42.

[0056] The beneficial effect of the preferred solution in the above embodiments is that when the rivet nut 5 is rubbed, the gripper cylinder 2 drives the two gripper portions 21 to move closer to each other, causing the two mounting seats 3 to rotate around their respective central axes 22. During this process, one end of the mounting seat 3 is connected to the gripper portion 21 through a compression spring 23. Utilizing the elastic potential energy of the compression spring 23, the other end of the mounting seat 3 always applies a flexible clamping force to the clamping piece 42. In this way, the two clamping pieces 42 can adapt to the outer diameter of the rivet nut 5 during the closing process, avoiding damage to the rivet nut 5 or the clamping pieces 42 due to rigid collisions, while ensuring the stability of the clamping.

[0057] Simultaneously, as the two clamping pieces 42 slide within the through groove 414 of the mounting plate 41, the guide strips 416 on the guide blocks 415 on both sides of the mounting plate 41 extend into the through groove 414, limiting and guiding the movement trajectory of the clamping pieces 42 through their guide surfaces 4161. This ensures that the clamping pieces 42 maintain precise straightness and parallelism during movement, preventing them from swaying or warping when subjected to force and rubbing, thereby guaranteeing the positioning accuracy of the rubbing groove 43 for the rivet nut 5, and achieving high-precision, low-damage rivet rubbing operations for various specifications of hexagonal rivet nuts 5.

[0058] Example 10 like Figure 3 and Figure 6 Based on embodiments 1-9, the rubbing groove 43 includes an arc groove 431 and a V-shaped groove 432 arranged in sequence. The arc groove 431 and the V-shaped groove 432 are smoothly transitioned. The opening angle of the V-shaped groove 432 is 120°. During the process of the two gripper parts 21 approaching each other, the V-shaped groove 432 contacts the rivet nut 5 before the clamping piece 42 and the corresponding guide surface 4161 come into contact.

[0059] The beneficial effect of adopting the preferred solution in the above embodiments is that, in the initial state, the arc grooves 431 of the two clamping pieces 42 are concentric and coaxially set with the feeding hole 411, ensuring that the hexagonal prism part of the rivet nut 5 smoothly enters the arc groove 431. Then, the two clamping pieces 42 move relative to each other and push the rivet nut 5 to rotate until the side of the hexagonal prism part of the rivet nut 5 is in contact with the inner wall of the V-groove 432, fixing the angle of the rivet nut 5 and ensuring the consistency of the positioning angle of the rivet nut 5. This makes the angle of the rivet nut 5 fixed during nail removal and riveting, realizing the automated riveting of the hexagonal rivet nut 5.

[0060] As the two clamping pieces 42 approach each other, the V-groove 432 contacts the rivet nut 5 first and, under the action of the compression spring 23, rubs the rivet nut 5 to avoid rigid collision between the clamping pieces 42 and the guide block 415 caused by the obstruction of the rivet nut 5. After the rivet nut 5 is rubbed into place, the two clamping pieces 42 enter between the two guide blocks 415 under the guidance of the guide surface 4161, avoiding inaccurate positioning caused by gaps between the two clamping pieces 42 and improving the positioning accuracy of the rivet nut 5.

[0061] Based on the above embodiments, a sensing hole communicating with the feeding hole 411 is provided on the mounting plate 41, and a sensor 417 is provided.

[0062] Sensor 417 can be a conventional fiber optic proximity sensor, etc., to confirm whether the rivet nut 5 has completely fallen into the feeding hole 411, thereby improving the accuracy of feeding. The sensing hole and the through slot are staggered to avoid the clamping plate 42 interfering with the sensor 417.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hexagonal rivet nut rolling device, comprising a mounting block (1), a gripper cylinder (2) disposed on the mounting block (1), and two mounting seats (3) respectively hinged to the two gripper portions (21) of the gripper cylinder (2); the hexagonal rivet nut rolling device further comprises a rolling assembly (4), the rolling assembly (4) comprising a mounting plate (41) and two clamping pieces (42) slidably connected to the mounting plate (41), the mounting plate (41) having a feeding hole (411) for inserting a rivet nut (5), and one end of the two clamping pieces (42) forming a rolling groove (43) corresponding to the feeding hole (411), characterized in that, The mounting plate (41) is detachably connected to the mounting block (1); the other ends of the two clamping pieces (42) are detachably connected to the two mounting seats (3) respectively, so that under the drive of the clamping cylinder (2), the two clamping pieces (42) move towards each other and rub the rivet nut (5) inserted into the rubbing groove (43).

2. The hexagonal rivet nut rolling device according to claim 1, characterized in that, The mounting block (1) is provided with a first connecting seat (11), and the mounting plate (41) is provided with a second connecting seat (412). The second connecting seat (412) is connected to the first connecting seat (11) through a first fastening rod (6).

3. The hexagonal rivet nut rolling device according to claim 2, characterized in that, The first connector (11) has a first insertion hole (111), and the second connector (412) has a second insertion hole (4121) directly opposite the first insertion hole (111). The first fastening rod (6) passes through the second insertion hole (4121) and is detachably connected to the first insertion hole (111).

4. The hexagonal rivet nut rolling device according to claim 1, characterized in that, The other end of each of the two clamps (42) is provided with a slide rail (7), and the slide rail (7) is slidably connected to a slide block (8); each of the two mounting bases (3) is provided with a second fastening rod (9) perpendicular to the slide rail (7), and the second fastening rod (9) is connected to the corresponding slide block (8).

5. The hexagonal rivet nut rolling device according to claim 4, characterized in that, The mounting base (3) has a through hole (31), and the slide (8) has a plurality of intermediate positioning holes (81). Each intermediate positioning hole (81) extends at intervals along the sliding direction of the slide (8). Any intermediate positioning hole (81) can communicate with the through hole (31), and the second fastening rod (9) can be inserted into the connected intermediate positioning hole (81) and the through hole (31).

6. The hexagonal rivet nut rolling device according to claim 5, characterized in that, The slide rail (7) has multiple end positioning holes (71), each of the end positioning holes (71) is spaced apart along the length of the slide rail (7), and any one of the end positioning holes (71) can communicate with the intermediate positioning hole (81), and the second fastening rod (9) can be inserted into the connected intermediate positioning hole (81) and the end positioning hole (71).

7. The hexagonal rivet nut rolling device according to claim 4, characterized in that, The length of the slide rail (7) is greater than the width of the clamp (42), and the maximum distance between the slide rail (7) and the mounting plate (41) is greater than the sliding distance of the clamp (42).

8. The hexagonal rivet nut rolling device according to claim 4, characterized in that, A handle (83) is provided on the upper side of the slide (8), and the handle (83) extends out of the mounting base (3) and the clamp (42).

9. A hexagonal rivet nut rolling device according to any one of claims 1-8, characterized in that, The gripper portion (21) is provided with a central shaft (22) and a compression spring (23). The middle part of the mounting base (3) is rotatably connected to the central shaft (22). The two ends of the mounting base (3) are perpendicular to each other relative to the central shaft (22), and one end of the mounting base (3) is connected to the gripper portion (21) through the compression spring (23). The other end of the mounting base (3) is detachably connected to the clamping piece (42). The mounting plate (41) has a through groove (414) for sliding the clamping piece (42). Guide blocks (415) are provided on opposite sides of the mounting plate (41). Guide strips (416) extending into the through groove (414) are provided on the opposite sides of the two guide blocks (415). The end face of the guide strip (416) is provided with a guide surface (4161) corresponding to the clamping piece (42).

10. The hexagonal rivet nut rolling device according to claim 9, characterized in that, The rubbing groove (43) includes an arc groove (431) and a V-shaped groove (432) arranged in sequence. The arc groove (431) and the V-shaped groove (432) are smoothly transitioned. The opening angle of the V-shaped groove (432) is 120°. During the process of the two gripper parts (21) approaching each other, the V-shaped groove (432) and the rivet nut (5) contact each other before the clamping piece (42) and the corresponding guide surface (4161) come into contact.

Images