A positioning and clamping device for processing rivet nuts

Abstract

The present invention relates to the technical field of press riveting nut processing, and in particular to a positioning and clamping device for press riveting nut processing, including a processing table, the processing table has an installation cavity, and further includes: a limiting frame, a plurality of outer clamping plates are arranged in the limiting frame; a plurality of inner clamping plates; and a switching driving assembly; In the present invention, by setting the switching driving assembly to drive the switching of the outer clamping plate and the inner clamping plate, the automatic switching of the clamping of the outer surface and the inner side wall of the press riveting nut body is realized, so that the positioning and clamping device has two clamping methods for clamping the outer surface and the inner side wall of the press riveting nut body, and automatically switches the clamping method according to the needs of processing the outer surface and the inner side wall of the press riveting nut body.

Description

Technical Field

[0001] The present invention relates to the field of processing of press riveting nuts, and particularly to a positioning and clamping device for processing press riveting nuts. Background Art

[0002] A press riveting nut, also called a riveting nut and a self-locking nut, is a nut applied to thin plates or sheet metals. It is circular in shape and has knurled teeth and a guiding groove at one end. Its principle is that the knurled teeth are pressed into the pre-set holes in the sheet metal. Generally, the diameter of the pre-set holes is slightly smaller than the knurled teeth of the press riveting nut. Through pressure, the knurled teeth of the press riveting nut are squeezed into the plate, causing plastic deformation around the pre-set holes. The deformed material is squeezed into the guiding groove, thus achieving a locking effect. During the processing of press riveting nuts, it is necessary to fix the press riveting nuts. In the prior art, clamping devices are used to fix the press riveting nuts.

[0003] However, the traditional clamping device has a single clamping method for press riveting nuts. When processing the outer surface and the inner wall separately, it is necessary to disassemble and assemble the press riveting nut to change the clamping method, which is not convenient for automatically switching the clamping method to switch the clamping methods for the inner wall and the outer surface of the press riveting nut. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that the traditional clamping device has a single clamping method for press riveting nuts, and when processing the outer surface and the inner wall separately, it is necessary to disassemble and assemble the press riveting nut to change the clamping method, which is not convenient for automatically switching the clamping method to switch the clamping methods for the inner wall and the outer surface of the press riveting nut, and to propose a positioning and clamping device for processing press riveting nuts.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A positioning and clamping device for processing press riveting nuts, including a processing table, the processing table has an installation cavity, and further includes: a limiting frame, a plurality of outer clamping plates are arranged in the limiting frame, and a first elastic support member is arranged between each of the plurality of outer clamping plates and the limiting frame; a plurality of inner clamping plates, the bottoms of the plurality of inner clamping plates are provided with a height adjustment component; and a switching driving component, which is used to cancel the rigid acting force required for the plurality of outer clamping plates to clamp the outer surface of the press riveting nut body during the process of driving the plurality of inner clamping plates to synchronously approach the inner wall of the press riveting nut body for clamping. Among them, when the press riveting nut body is placed in the limiting frame, the press riveting nut body is arranged between the outer clamping plates and the inner clamping plates.

[0006] Specifically, the limiting frame is fixedly arranged on the top surface of the processing table;

[0007] It should be understood that the rivet nut body has an inner cavity and an outer edge surface, the outer edge surface is used to cooperate with a wrench for tightening and adjustment, and the inner cavity is used to open threads for threaded connection; specifically, multiple outer clamping plates can correspond one-to-one to multiple outer edges.

[0008] During the processing of the rivet nut body, when the outer surface of the rivet nut body needs to be processed, the rivet nut body is first placed in the limit frame and is between the outer clamping plate and the inner clamping plate. Under the action of the first elastic support, the rivet nut body can be initially positioned, and then the driving assembly is switched to drive the plurality of inner clamping plates to synchronously approach the inner wall of the rivet nut body to clamp the rivet nut body. The rigid force required for the plurality of outer clamping plates to clamp the outer surface of the rivet nut body is synchronously canceled. After the clamping of the inner wall of the rivet nut body is completed, the height of the rivet nut body and the inner clamping plate is adjusted by the height adjustment assembly, so that the rivet nut body is moved out of the limit frame, so that the outer surface of the rivet nut body is opened, so that the outer surface of the rivet nut body can be processed conveniently.

[0009] When the inner wall surface of the rivet nut body needs to be processed, the height of the rivet nut body is lowered by the height adjustment component so that the rivet nut body is reset to the limit frame, and then the multiple inner clamping plates are driven away from the inner wall of the rivet nut body by the switching drive component. After the clamping of the inner wall of the rivet nut body is cancelled, a rigid force is applied to the multiple outer clamping plates to maintain the clamping position of the outer surface of the rivet nut body, and then the height of the inner clamping plate is adjusted by the height adjustment component so that the top end of the inner clamping plate is below the rivet nut body, and the shielding of the inner surface of the rivet nut body is cancelled;

[0010] It should be further explained that by setting a switching drive component to switch the outer clamping plate and the inner clamping plate, automatic switching of the clamping of the outer surface and the inner wall of the rivet nut body is achieved, so that the positioning clamping device has two clamping modes for clamping the outer surface and the inner wall of the rivet nut body, and the clamping mode is automatically switched according to the needs of processing the outer surface and the inner wall of the rivet nut body.

[0011] In one embodiment, the height adjustment assembly includes: a first clearance groove, which is opened through the top surface of the processing table, and a plurality of limiting channels are opened on the side wall of the first clearance groove to provide space for the movement of the inner clamping plate; a cylinder, which is fixedly installed on the inner bottom surface of the installation cavity; a moving plate, which is fixedly connected to the end of the piston rod of the cylinder; four connecting rails, which are fixedly connected to the top of the moving plate and are distributed in a circular array with the moving plate as a reference, and the plurality of inner clamping plates respectively pass through the plurality of limiting channels and are slidably inserted on the surface of the plurality of connecting rails.

[0012] It should be understood that the height of the moving plate is adjusted by the cylinder. The moving plate drives the four inner clamping plates to change in height synchronously through the connecting rail. And on the premise of maintaining the height adjustment of the inner clamping plates, the setting of the connecting rail avoids the situation of hindering the clamping adjustment of the inner clamping plates.

[0013] In one embodiment, a secondary support assembly is further provided at the top of the moving plate (8). The secondary support assembly includes: a support frame, the support frame is fixedly connected to the top of the moving plate, and sliding grooves are provided on both sides; two plug-in frames, the two plug-in frames are respectively slidably inserted into the two sliding grooves, and support platforms are provided at the tops; two limiting through grooves, the two limiting through grooves are opened at the top of the processing table, and limiting platforms are fixedly provided on the inner walls, and the bottom end of the support platform is in contact with the top of the limiting platform.

[0014] In one embodiment, the secondary support assembly further includes: two plug-in members, the two plug-in members are respectively fixedly connected to the tops of the two plug-in frames, and are respectively slidably inserted into the ends of the two support platforms; two linkage rails, the two linkage rails are respectively fixedly connected to the bottoms of the two support platforms, and linkage pins are slidably arranged inside the two linkage rails; two traction frames, the two traction frames are respectively rotatably connected to the two linkage pins, and second elastic support members are arranged between the bottom ends and the two plug-in frames respectively; two limiting plates, the two limiting plates are fixedly connected to positions near the top ends on both sides of the support frame.

[0015] In one embodiment, the second elastic support member includes: a plug-in rod, the plug-in rod is fixedly connected to the surface of the plug-in frame, and the top end is inserted through the bottom end of the traction frame; a second support spring, the second support spring is sleeved on the surface of the plug-in rod, and both ends are fixedly connected to the traction frame and the bottom end of the plug-in rod respectively. It should be understood that when the support platform moves upward and leaves the limiting through groove, the second support spring can push the traction frame to move upward relative to the plug-in frame until it resets, so that the support platform is far away from the bottom surface of the rivet nut body, which is beneficial to reducing the shielding of the bottom surface of the rivet nut body and providing favorable conditions for the later treatment of the outer surface of the rivet nut body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, by setting the switching drive assembly to drive the switching of the outer clamping plate and the inner clamping plate, the automatic switching of the clamping of the outer surface and the inner side wall of the rivet nut body is realized, so that the positioning clamping device has two clamping methods for clamping the outer surface and the inner side wall of the rivet nut body, and the clamping method is automatically switched according to the needs of processing the outer surface and the inner side wall of the rivet nut body.

[0018] When the press riveting nut body is within the limit frame, the limit platform will support the bottom of the press riveting nut body, creating a gap between the press riveting nut body and the surface of the processing table. When machining the inner side wall of the press riveting nut body, more machining space is left at the bottom end of the inner side wall of the press riveting nut body.

[0019] After clamping the outer surface of the press riveting nut body, start the air cylinder to pull the moving plate to move. During the process of adjusting the moving plate and the inner clamping plate to be below the press riveting nut body, the support platform remains at a constant height under the limitation of the limit platform in the limit through groove. The support frame will continue to descend synchronously driven by the moving plate. The support frame drives the limit plate to descend synchronously. During the process of the support frame driving the limit to descend synchronously, the limit plate will pull the traction frame. While compressing the second elastic support member, the traction frame will drive the linkage pin to move within the linkage rail, thereby driving the support platform to move towards the bottom surface of the press riveting nut body, reducing the occlusion of the space at the bottom end of the inner side wall of the press riveting nut body by the support platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the first overall structure of the present invention.

[0021] Figure 2 is Figure 1 The enlarged view of part A in

[0022] Figure 3 It is a schematic diagram of the structure of the processing table when the press riveting nut body of the present invention is in the state where the inner surface is to be machined.

[0023] Figure 4 For the present invention Figure 3 The enlarged view of part B in

[0024] Figure 5 It is a schematic diagram of the second overall structure of the present invention.

[0025] Figure 6 is Figure 5 The enlarged view of part C in

[0026] Figure 7 It is a schematic diagram of the structure of the rotation drive assembly and the inner clamping plate of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the moving plate, the support frame and the inner clamping plate of the present invention.

[0028] Figure 9 It is a sectional view of the structure of the inner clamping plate of the present invention.

[0029] Figure 10 It is a schematic diagram of the structure of the support frame, the plug-in frame, the plug-in member, the support platform, the linkage rail, the second elastic support frame and the traction frame of the present invention.

[0030] Figure 11 This is a schematic structural diagram of the limit through groove and the limit platform on the processing table of the present invention.

[0031] In the figure: processing table 1, installation cavity 101, limit frame 2, outer clamping plate 3, inner clamping plate 4, press riveting nut body 5, first relief groove 6, limit channel 601, air cylinder 7, moving plate 8, connecting rail 9, connecting groove 10, support rod 11, first support spring 12, first driving ring 13, first arc-shaped guiding groove 14, first guiding pin 15, second driving ring 16, second arc-shaped guiding groove 17, second guiding pin 18, second relief groove 19, pressing block 20, limit connecting block 2001, support rail 2002, first linkage gear ring 21, second linkage gear ring 22, first motor 23, driving gear 2301, support frame 24, plug-in frame 25, support platform 26, limit through groove 27, limit platform 28, plug-in member 29, linkage rail 30, linkage pin 3001, traction frame 31, limit plate 32, plug-in rod 33, second support spring 34, inner clamping claw 35, connecting rod 36, third support spring 37, first direction b, second direction a. Detailed implementation manners

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0033] As Figures 1 to 8 shown, in one embodiment, a positioning and clamping device for processing press riveting nuts includes a processing table 1. The processing table 1 has an installation cavity 101, and further includes: a limit frame 2, in which a plurality of outer clamping plates 3 are arranged, and a first elastic support member is arranged between each of the plurality of outer clamping plates 3 and the limit frame 2; a plurality of inner clamping plates 4, the bottom ends of the plurality of inner clamping plates 4 are provided with a height adjustment component; and a switching drive component, which is used to cancel the rigid acting force required for the plurality of outer clamping plates 3 to clamp the outer surface of the press riveting nut body 5 during the process of driving the plurality of inner clamping plates 4 to synchronously approach the inner wall of the press riveting nut body 5 for clamping; wherein, when the press riveting nut body 5 is placed in the limit frame 2, the press riveting nut body 5 is arranged between the outer clamping plates 3 and the inner clamping plates 4.

[0034] Specifically, the limit frame 2 is fixedly arranged on the top surface of the processing table;

[0035] It should be understood that the press riveting nut body 5 has an inner cavity and an outer edge surface. The outer edge surface is used to cooperate with a wrench for tightening adjustment, and the inner cavity is used to open threads for threaded connection; specifically, the plurality of outer clamping plates 3 can correspond to the plurality of outer edge surfaces one by one.

[0036] During the processing of the rivet nut body 5, when it is necessary to process the outer surface of the rivet nut body 5, the rivet nut body 5 is first placed in the limit frame 2 and is between the outer clamping plate 3 and the inner clamping plate 4. Under the action of the first elastic support, the rivet nut body 5 can be initially positioned, and then the driving assembly is switched to drive the multiple inner clamping plates 4 to synchronously approach the inner wall of the rivet nut body 5 inside the rivet nut body 5 to clamp, and the rigid force required for the multiple outer clamping plates 3 to clamp the outer surface of the rivet nut body 5 is synchronously canceled. After the inner wall of the rivet nut body 5 is clamped, the height of the rivet nut body 5 and the inner clamping plate 4 is adjusted by the height adjustment assembly, so that the rivet nut body 5 moves out of the limit frame 2, so that the outer surface of the rivet nut body 5 is opened, which is convenient for processing the outer surface of the rivet nut body 5.

[0037] When the inner wall surface of the rivet nut body 5 needs to be processed, the height of the rivet nut body 5 is lowered by the height adjustment component so that the rivet nut body 5 is reset to the limit frame 2, and then the multiple inner clamping plates 4 are driven away from the inner wall of the rivet nut body 5 by the switching drive component. After the clamping of the inner wall of the rivet nut body 5 is cancelled, a rigid force is applied to the multiple outer clamping plates 3 to maintain the clamping and positioning of the outer surface of the rivet nut body 5, and then the height of the inner clamping plate 4 is adjusted by the height adjustment component so that the top end of the inner clamping plate 4 is below the rivet nut body 5, and the inner surface of the rivet nut body 5 is not blocked;

[0038] It should be further explained that by setting a switching drive component to switch the outer clamping plate 3 and the inner clamping plate 4, automatic switching of the clamping of the outer surface and the inner wall of the rivet nut body 5 is achieved, so that the positioning clamping device has two clamping modes for clamping the outer surface and the inner wall of the rivet nut body 5, and the clamping mode is automatically switched according to the needs of processing the outer surface and the inner wall of the rivet nut body 5.

[0039] like Figure 1 , Figure 3 and Figure 8 As shown, in one embodiment, the height adjustment component includes: a first clearance groove 6, the first clearance groove 6 is opened through the top surface of the processing table 1, and a plurality of limiting channels 601 are opened on the side wall of the first clearance groove 6 to provide space for the movement of the inner clamping plate 4; a cylinder 7, the cylinder 7 is fixedly installed on the inner bottom surface of the installation cavity 101; a moving plate 8, the moving plate 8 is fixedly connected to the end of the piston rod of the cylinder 7; four connecting rails 9, the four connecting rails 9 are fixedly connected to the top of the moving plate 8, and are distributed in a circular array with the moving plate 8 as a reference, and the multiple inner clamping plates 4 pass through the multiple limiting channels 601 respectively and then slide and plug on the surface of the multiple connecting rails 9.

[0040] It should be understood that the height of the moving plate 8 is adjusted by the cylinder 7. The moving plate 8 drives the four inner clamping plates 4 to change in height synchronously through the connecting rail 9. And on the premise of maintaining the height adjustment of the inner clamping plates 4, through the setting of the connecting rail 9, the situation that the clamping adjustment of the inner clamping plates 4 is hindered is avoided.

[0041] As Figure 1 and Figure 2 shown, in one embodiment, the first elastic support member includes: a connecting groove 10, the connecting groove 10 is opened on the inner side wall of the limiting frame 2, and the outer clamping plate 3 at the corresponding position is slidably arranged in the connecting groove 10; a support rod 11, the support rod 11 penetrates through the limiting frame 2 from the connecting groove 10 and extends to the outside of the limiting frame 2; a first support spring 12, the first support spring 12 is sleeved on the surface of the support rod 11 and the two ends are respectively fixedly connected with the outer clamping plate 3 and the inside of the connecting groove 10.

[0042] It should be understood that by setting the support rod 11 and the first support spring 12, before the outer clamping plate 3 receives the rigid acting force applied by the switching drive assembly, the elastic support for the outer clamping plate 3 is maintained, so that after the rivet nut body 5 is placed in the limiting frame 2, the limiting support of the outer clamping plate 3 can be obtained, and the preliminary positioning of the rivet nut body 5 is maintained.

[0043] As Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 shown, in one embodiment, the switching drive assembly includes: a first drive ring 13, the first drive ring 13 is rotatably connected to the inner top surface of the installation cavity 101, and has a plurality of first arc-shaped guiding grooves 14 on its surface. A first guiding pin 15 is slidably connected in each of the plurality of first arc-shaped guiding grooves 14, and the plurality of first guiding pins 15 are respectively slidably connected to the side walls of the plurality of inner clamping plates 4; a second drive ring 16, the second drive ring 16 is rotatably connected to the inner top surface of the installation cavity 101, and has a plurality of second arc-shaped guiding grooves 17 on its surface. A second guiding pin 18 is slidably arranged in each of the plurality of second arc-shaped guiding grooves 17; a plurality of second relief grooves 19, the plurality of second relief grooves 19 correspond to the plurality of second guiding pins 18 one by one, and are penetrated and opened on the top surface of the processing table 1. The plurality of second guiding pins 18 respectively pass through the plurality of second relief grooves 19; a plurality of pressing blocks 20, the plurality of pressing blocks 20 are respectively fixedly connected to the tops of the plurality of second guiding pins 18, and the plurality of pressing blocks 20 are all slidably arranged on the top surface of the processing table 1; a rotation drive assembly for driving the first drive ring 13 and the second drive ring 16 to rotate synchronously, and the rotation directions of the first drive ring 13 and the second drive ring 16 are opposite.

[0044] Specifically, limit connection blocks 2001 are fixedly connected to both sides of the pressing block 20. Support rails 2002 are slidably arranged on the limit connection blocks 2001 on both sides of the pressing block 20. The support rails 2002 are fixedly connected to the top surface of the processing table 1, so as to slidably arrange the pressing block 20 on the top surface of the processing table 1.

[0045] It should be understood that, first, before placing the rivet nut body 5, the first driving ring 13 is driven to rotate in the first direction b by the rotation driving assembly, and the second driving ring 16 is driven to rotate in the second direction a, so that a certain distance is maintained between the pressing block 20 and the support rod 11, and no rigid force is applied to the support rod 11, and a certain distance is maintained between the inner clamping plate 4 and the inner wall of the rivet nut body 5, so that the rivet nut body 5 can be placed between the outer clamping plate 3 and the inner clamping plate 4. The specific adjustment method is as follows:

[0046] The first arc-shaped guiding groove 14 on the first driving ring 13 will drive the first guiding pin 15 to move under the rotation of the first driving ring 13. The first guiding pin 15 will drive the inner clamping plate 4 to move away from the inner side wall of the rivet nut body 5. The second arc-shaped guiding groove 17 on the second driving ring 16 will drive the second guiding pin 18 to move under the rotation of the second driving ring 16. The second guiding pin 18 drives the pressing block 20 to move synchronously closer to the support rod 11, but a distance is kept between them and the support rod 11;

[0047] Secondly, after placing the rivet nut body 5 into the limit frame 2 and between the inner clamping plate 4 and the outer clamping plate 3, the outer surface of the rivet nut body 5 is processed first. Therefore, the first driving ring 13 is driven to rotate in the second direction a by the rotation driving assembly, and the second driving ring 16 is driven to rotate in the first direction b. The inner clamping plate 4 gradually approaches the inner side wall of the rivet nut body 5, and the pressing block 20 moves away from the support rod 11 until the inner clamping plate 4 completes the clamping of the inner side wall of the rivet nut body 5. Then, the air cylinder 7 is started to push the moving plate 8 to move, thereby driving the inner clamping plate 4 and the rivet nut body 5 clamped on the inner clamping plate 4 to move out of the limit frame 2, providing a good processing space for the processing of the outer surface of the rivet nut body 5;

[0048] Next, when it is necessary to process the inner wall of the rivet nut body 5, start the air cylinder 7 to pull and move the moving plate 8 to reset, thereby driving the rivet nut body 5 to reset into the limiting frame 2. Then, drive the first driving ring 13 to move in the first direction b and drive the second driving ring 16 to move in the second direction a through the switching driving component, so that the inner clamping plate 4 cancels the clamping of the inner wall of the rivet nut body 5, and the pressing block 20 gradually approaches the support rod 11 until the pressing block 20 presses tightly against the support rod 11, thereby indirectly and rigidly acting on the outer clamping plate 3 to keep the outer clamping plate 3 firmly clamping the outer surface of the rivet nut body 5. Then, start the air cylinder 7 to continue pulling the moving plate 8 downward until the top of the inner clamping plate 4 is below the rivet nut body 5, canceling the shielding of the inner wall space of the rivet nut body 5 and providing a processing space for processing the inner wall of the rivet nut body 5;

[0049] Finally, after the processing of the inner wall of the rivet nut body 5 is completed, adjust the height of the moving plate 8 through the air cylinder 7 so that the inner clamping plate 4 is within the limiting frame 2, and adjust the outer clamping plate 3 and the inner clamping plate 4 to the initial state convenient for placing the rivet nut body 5 through the switching driving component.

[0050] As Figure 5 、 Figure 6 and Figure 7 shown, in one embodiment, the rotation driving component includes: a first linkage gear ring 21, which is fixedly connected to the outer ring surface of the first driving ring 13; a second linkage gear ring 22, which is fixedly connected to the inner ring surface of the second driving ring 16; a first motor 23, which is fixedly connected to the inner top surface of the installation cavity 101 and is located between the first driving ring 13 and the second driving ring 16. The output end of the first motor 23 is fixedly connected with a driving gear 2301, and both sides of the driving gear 2301 are meshed with the first linkage gear ring 21 and the second linkage gear ring 22 respectively.

[0051] It should be understood that by controlling the rotation direction of the first motor 23, and then driving the rotation direction of the driving gear 2301. During the process of the first motor 23 driving the driving gear 2301 to rotate, when the first driving ring 13 rotates in the second direction a, the second driving ring 16 rotates in the first direction b. During the process of the first motor 23 driving the driving gear 2301 to rotate, when the first driving ring 13 rotates in the first direction b, the second driving ring 16 rotates in the second direction a.

[0052] As Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 10 and Figure 11As shown, in one embodiment, a secondary support assembly is further provided on the top of the moving plate 8. The secondary support assembly includes: a support frame 24, which is fixedly connected to the top of the moving plate 8 and has sliding grooves formed on both sides; two plug-in frames 25, which are respectively slidably inserted into the two sliding grooves and have support platforms 26 provided at their tops; two limiting through grooves 27, which are formed on the top of the processing table 1 and have limiting platforms 28 fixedly provided on their inner walls, and the bottom end of the support platform 26 is in contact with the top of the limiting platform 28. It should be understood that when the rivet nut body 5 is within the limiting frame 2, the limiting platform 28 will support the support platform 26, and the support platform 26 will support the bottom of the rivet nut body 5, so that there is a gap between the rivet nut body 5 and the surface of the processing table 1. When processing the inner side wall of the rivet nut body 5, more processing space is left at the bottom end of the inner side wall of the rivet nut body 5.

[0053] As Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in one embodiment, the secondary support assembly further includes: two plug-in members 29, which are respectively fixedly connected to the tops of the two plug-in frames 25 and are respectively slidably inserted into the ends of the two support platforms 26; two linkage rails 30, which are respectively fixedly connected to the bottoms of the two support platforms 26, and linkage pins 3001 are slidably arranged inside the two linkage rails 30; two traction frames 31, which are respectively rotatably connected to the two linkage pins 3001, and second elastic support members are arranged between the bottom ends and the two plug-in frames 25 respectively; two limiting plates 32, which are fixedly connected to positions near the tops of both sides of the support frame 24.

[0054] It should be understood that after the outer surface of the rivet nut body 5 is clamped, the air cylinder 7 is started to pull the moving plate 8 to move. During the process of adjusting the moving plate 8 and the inner clamping plate 4 to be below the rivet nut body 5, the support platform 26 remains at a constant height under the limitation of the limiting platform 28 in the limiting through groove 27, and the support frame 24 will continue to descend synchronously under the drive of the moving plate 8. The support frame 24 synchronously drives the limiting plate 32 to descend. During the process of the support frame 24 synchronously driving the limiting plate 32 to descend, the limiting plate 32 will pull the traction frame 31. While compressing the second elastic support member, the traction frame 31 will drive the linkage pin 3001 to move within the linkage rail 30, thereby driving the support platform 26 to move towards the bottom surface of the rivet nut body 5, reducing the occlusion of the space at the bottom end of the inner side wall of the rivet nut body 5 by the support platform 26.

[0055] Further explanation, as Figure 4 and Figure 11As shown, the limit platform 28 is fixedly connected in the limit slot 27, and the support platform 26 is in the limit slot 27 and is in contact with the top of the limit platform 28. Therefore, the limit platform 28 will limit the support platform 26 from continuing to descend.

[0056] like Figure 10 As shown, in one embodiment, the second elastic support member includes: a plug rod 33, the plug rod 33 is fixedly connected to the surface of the plug frame 25, and the top end thereof penetrates and is plugged into the bottom end of the traction frame 31; a second support spring 34, the second support spring 34 is sleeved on the surface of the plug rod 33, and the two ends thereof are respectively fixedly connected to the traction frame 31 and the bottom end of the plug rod 33. It should be understood that when the support platform 26 moves upward and leaves the limiting through slot 27, the second support spring 34 can push the traction frame 31 to move upward relative to the plug frame 25 until it is reset, so that the support platform 26 is away from the bottom surface of the rivet nut body 5, which is conducive to reducing the obstruction of the bottom surface of the rivet nut body 5, and provides favorable conditions for the later processing of the outer surface of the rivet nut body 5.

[0057] like Figure 9 As shown, in one embodiment, a plurality of connecting rods 36 are inserted into the top ends of the plurality of inner clamping plates 4, the ends of the plurality of connecting rods 36 are fixedly connected with the inner clamping claws 35, a third support spring 37 is sleeved on the surface of the connecting rods 36, and the two ends of the third support spring 37 are fixedly connected with the inner clamping claws 35 and the inner clamping plates 4 respectively. By setting the connecting rod 36 and the third supporting spring 37, the inner clamping claw 35 is elastically supported on the inner clamping plate 4. When the rivet nut body 5 is placed at the position of the inner clamping plate 4 and the outer clamping plate 3, the inner clamping claw 35 and the outer clamping plate 3 are both elastically supported, and a certain shelf space is maintained between the inner clamping claw 35 and the outer clamping plate 3. When the rivet nut body 5 is inserted into the shelf space, the inner clamping claw 35 and the outer clamping plate 3 can provide elastic clearance space, and when the external force applied to the rivet nut body 5 is cancelled, the inner clamping claw 35 and the outer clamping plate 3 can adjust and position the position of the rivet nut body 5 under the elastic action to achieve initial positioning.

[0058] like Figure 1 , Figure 2 and Figure 9 As shown, in one embodiment, the top ends of the inner clamping claw 35 and the outer clamping plate 3 are both provided with guiding arc surfaces. It should be understood that by providing the guiding arc surfaces, when the rivet nut body 5 is inserted into the storage space, the guiding arc surfaces at the top ends of the inner clamping claw 35 and the outer clamping plate 3 play a guiding role, so as to avoid the rivet nut body 5 being pressed against by the top ends of the inner clamping claw 35 and the outer clamping plate 3 when the rivet nut body 5 is inserted into the storage space.

[0059] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A positioning and clamping device for processing rivet nuts, comprising a processing table (1), and the processing table (1) has an installation cavity (101), characterized in that: Further comprising: A limit frame (2), wherein a plurality of outer clamping plates (3) are arranged inside the limit frame (2), and a first elastic support member is arranged between each of the plurality of outer clamping plates (3) and the limit frame (2); A plurality of inner clamping plates (4), wherein the bottom ends of the plurality of inner clamping plates (4) are provided with a height adjustment component; and A switching drive component, which is used to cancel the rigid acting force required for the plurality of outer clamping plates (3) to clamp the outer surface of the rivet nut body (5) during the process of driving the plurality of inner clamping plates (4) to synchronously approach the inner wall of the rivet nut body (5) for clamping inside the rivet nut body (5); Wherein, when the rivet nut body (5) is placed inside the limit frame (2), the rivet nut body (5) is arranged between the outer clamping plates (3) and the inner clamping plates (4); The height adjustment component includes a moving plate (8) and four connecting rails (9). The four connecting rails (9) are fixedly connected to the top of the moving plate (8) and are annularly arrayed with reference to the moving plate (8). The plurality of inner clamping plates (4) are respectively slidably inserted on the surfaces of the plurality of connecting rails (9); The switching drive component includes: A first drive ring (13), which is rotatably connected to the inner top surface of the installation cavity (101), and has a plurality of first arc-shaped guide grooves (14) on its surface. A first guide pin (15) is slidably connected in each of the plurality of first arc-shaped guide grooves (14), and the plurality of first guide pins (15) are respectively slidably connected to the side walls of the plurality of inner clamping plates (4); A second drive ring (16), which is rotatably connected to the inner top surface of the installation cavity (101), and has a plurality of second arc-shaped guide grooves (17) on its surface. A second guide pin (18) is slidably arranged in each of the plurality of second arc-shaped guide grooves (17); A plurality of second relief grooves (19), which correspond to the plurality of second guide pins (18) one by one and are penetrated through the top surface of the processing table (1). The plurality of second guide pins (18) respectively pass through the plurality of second relief grooves (19); A plurality of pressing blocks (20), which are respectively fixedly connected to the tops of the plurality of second guide pins (18), and the plurality of pressing blocks (20) are all slidably arranged on the top surface of the processing table (1); A rotation drive component, which is used to drive the first drive ring (13) and the second drive ring (16) to rotate synchronously, and the rotation directions of the first drive ring (13) and the second drive ring (16) are opposite; The rotation drive component includes: A first linkage gear ring (21), which is fixedly connected to the outer ring surface of the first drive ring (13); A second linkage gear ring (22), which is fixedly connected to the inner ring surface of the second drive ring (16); A first motor (23), the first motor (23) being fixedly connected to the top surface inside the installation cavity (101) and being located between the first drive ring (13) and the second drive ring (16), the output end of the first motor (23) being fixedly connected to a drive gear (2301), and two sides of the drive gear (2301) being respectively meshed with the first linkage gear ring (21) and the second linkage gear ring (22).

2. The positioning and clamping device for processing press riveting nuts according to claim 1, wherein: The height adjustment assembly also includes: A first clearance groove (6), the first clearance groove (6) being formed through the top surface of the processing table (1), and a plurality of limiting channels (601) are formed on the side wall of the first clearance groove (6) to provide space for the inner clamping plate (4) to move; A cylinder (7), the cylinder (7) being fixedly mounted on the inner bottom surface of the mounting cavity (101); The movable plate (8) is fixedly connected to the end of the piston rod of the cylinder (7); The plurality of inner clamping plates (4) respectively pass through the plurality of limiting channels (601) and are then slidably plugged onto the surfaces of the plurality of connecting rails (9).

3. The positioning and clamping device for processing rivet nuts according to claim 2, wherein: The first elastic support member comprises: A connecting groove (10), wherein the connecting groove (10) is provided on the inner side wall of the limiting frame (2), and the outer clamping plate (3) at a corresponding position is slidably arranged in the connecting groove (10); A support rod (11), wherein the support rod (11) passes through the limiting frame (2) from the connection groove (10) and then extends to the outside of the limiting frame (2); A first support spring (12), the first support spring (12) is sleeved on the surface of the support rod (11) and has two ends fixedly connected to the outer clamping plate (3) and the inside of the connecting groove (10) respectively.

4. The positioning and clamping device for processing press riveting nuts according to claim 3, characterized in that: An auxiliary support component is also provided on the top of the movable plate (8), and the auxiliary support component comprises: A support frame (24), the support frame (24) is fixedly connected to the top of the movable plate (8) and has sliding grooves on both sides; Two plug-in racks (25), the two plug-in racks (25) are respectively slidably plugged into the two sliding grooves, and the top ends of the two plug-in racks are each provided with a support platform (26); Two limiting through grooves (27), the two limiting through grooves (27) are opened on the top of the processing table (1), and the limiting platform (28) is fixedly arranged on the inner wall, and the bottom end of the support platform (26) is arranged in contact with the top of the limiting platform (28).

5. A positioning and clamping device for processing press riveting nuts according to claim 4, characterized in that: The auxiliary support assembly also includes: Two plug-in connectors (29), the two plug-in connectors (29) are respectively fixedly connected to the tops of the two plug-in frames (25), and are respectively slidably plugged into the ends of the two support platforms (26); Two linkage rails (30), the two linkage rails (30) being fixedly connected to the bottoms of the two support platforms (26) respectively, and linkage pins (3001) are slidably arranged inside the two linkage rails (30); Two traction frames (31), the two traction frames (31) are rotatably connected to the two linkage pins (3001) respectively, and second elastic support members are arranged between the bottom ends and the two plug-in frames (25); Two limit plates (32), and the two limit plates (32) are fixedly connected to positions near the top on both sides of the support frame (24).

6. The positioning and clamping device for processing press riveting nuts according to claim 5, characterized in that: The second elastic support member includes: A plugging rod (33), the plugging rod (33) is fixedly connected to the surface of the plugging frame (25), and the top end thereof penetrates and is plugged at the bottom end of the traction frame (31); A second support spring (34), the second support spring (34) is sleeved on the surface of the plugging rod (33), and both ends thereof are fixedly connected to the traction frame (31) and the bottom end of the plugging rod (33) respectively.

7. The positioning and clamping device for processing press riveting nuts according to claim 6, characterized in that: A plurality of connecting rods (36) are plugged at the top ends of the plurality of inner clamping plates (4), inner clamping claws (35) are fixedly connected to the ends of the plurality of connecting rods (36), a third support spring (37) is sleeved on the surface of the connecting rod (36), and both ends of the third support spring (37) are fixedly connected to the inner clamping claw (35) and the inner clamping plate (4) respectively.

8. A positioning and clamping device for processing rivet nuts according to claim 7, characterized in that: Guide arc surfaces are provided at the top ends of the inner clamping claw (35) and the outer clamping plate (3).

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