Composite nut and production equipment thereof

Abstract

The invention discloses a composite nut and production equipment thereof, and belongs to the technical field of nut production equipment.The composite nut and the production equipment thereof comprise a large disc, a small disc is fixedly installed at the rear end of the large disc, supporting legs are fixedly installed on the outer surface of the large disc and the outer surface of a lower disc, and a flowing groove is formed in the upper end face of the large disc. According to the scheme, by constructing the integrated full-automatic machining unit, cooperating with the intelligent tapping module and the high-precision feeding system, the whole-process continuous manufacturing procedure of nut machining is achieved, the system corrects tapping parameters in real time through the closed-loop quality control system, workpiece positioning deviation is eliminated in cooperation with the self-adaptive compensation mechanism, manual intervention is completely eliminated, and meanwhile the machining efficiency is improved. According to the automatic solution, the process connection efficiency in a batch operation scene is remarkably improved, the quality fluctuation risk caused by a traditional discretization operation mode is effectively eliminated, and synchronous optimization of the machining efficiency and the product consistency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of nut production equipment, and more specifically, to a composite nut and its production equipment. Background Art

[0002] A nut is a screw cap, a part used to fasten together with a bolt or screw rod. It is an essential component for all manufacturing machinery. According to different materials, it can be divided into several major types such as carbon steel, stainless steel, non-ferrous metals (such as copper), etc. When producing nuts, tapping is required. Tapping refers to using a certain torque to screw a tap into the nut blank to be drilled to process an internal thread.

[0003] Chinese Patent with the authorization publication number CN211758996U discloses a composite nut production equipment. By turning the fixing bolt, the fixing bolt is separated from the thread fixing groove on the block, and the fixing of the block is released, so that the tap can be replaced. By loosening the locking screw rod, the locking screw rod is separated from the thread groove, and the fixing of the circular plate is released, so that the circular plate can rotate. According to the size of the workpiece, the corresponding label is found, and then the placement groove corresponding to the label is rotated to directly below the tap, and then the locking screw rod is screwed into the thread groove to fix the circular plate. The sizes and shapes of multiple placement grooves are different, so as to adapt to workpieces of different sizes.

[0004] Although this composite nut production equipment has the adaptability to workpieces of multiple specifications, its lack of intelligent level leads to significant breakpoints in the production process. The core problems are manifested as: key processes such as workpiece positioning and calibration, and clamping state confirmation still rely on manual intervention, forming a discrete operation mode, resulting in a significant extension of the production beat. This non - continuous manufacturing process not only poses risks to quality consistency, but also deteriorates the process stability due to manual operation errors, causing low overall equipment utilization rate in batch production scenarios and forming a bottleneck in production efficiency. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a composite nut and its production equipment, which can realize the automated production of nuts.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A composite nut and its production equipment, including a large plate, a small plate is fixedly installed at the rear end of the large plate, support legs are fixedly installed on the outer surfaces of both the large plate and the lower plate, a flow groove is arranged on the upper end surface of the large plate, a push groove is communicated inside the flow groove, a full-automatic processing mechanism is arranged between the large plate and the small plate, the full-automatic processing mechanism includes a pusher one arranged above the large plate, the pusher one includes a motor embeddedly connected to the upper end surface of the large plate, a cross bar one is fixedly installed at the end of the upper output shaft of the motor, a clamping block one is fixedly installed at the end of the cross bar one, the clamping block one is slidably connected inside the push groove, three groups of the cross bar one and the clamping block one are correspondingly arranged and are dispersedly arranged in a ring shape, a rotating shaft one is rotatably connected to the lower end surface of the large plate, and the lower output shaft of the motor is fixedly connected to the rotating shaft one.

[0008] The full-automatic processing mechanism includes a pusher two arranged above the small plate. A double-sided tooth ring one is arranged below the large plate, and a cross bar two is fixedly installed between the rotating shaft one and the double-sided tooth ring one.

[0009] One side of the double-sided tooth ring one meshes with a double-sided tooth ring two. A rotating shaft two is rotatably connected to the lower end surface of the small plate, and a cross bar three is fixedly installed between the rotating shaft two and the double-sided tooth ring two.

[0010] A transmission wheel is arranged above the small plate. The upper end of the rotating shaft extends above the small plate and is fixedly connected to the transmission wheel. An eccentric column is eccentrically installed on the upper end surface of the transmission wheel. A fixed column is fixedly installed on the upper end surface of the small plate. A transmission rod is rotatably connected to the outer surface of the fixed column. A slide rail is arranged on the upper end surface of the transmission rod, and the eccentric column is slidably connected to the slide rail.

[0011] A limit groove is arranged on the upper end surface of the small plate. A clamping block two is slidably connected inside the limit groove. The limit groove is communicated with the flow groove. A nut is arranged inside the flow groove, and the nut is arranged between the clamping block two and one of the clamping blocks one.

[0012] The push groove and the limit groove have the same diameter as the flow groove, and the depths of the push groove and the limit groove are both 5 cm shallower than the flow groove.

[0013] The full-automatic processing mechanism further includes a fixing part arranged inside the large plate and the small plate. The fixing part includes a rotating rod one rotatably connected to the lower end surface of the small plate. A gear one is fixedly installed at the lower end of the rotating rod one. The gear one meshes with the double-sided gear two. The fixing part further includes a rotating rod two rotatably connected to the lower end surface of the large plate. A gear two is fixedly installed at the lower end of the rotating rod two. The gear two meshes with the double-sided gear one.

[0014] The interior of the small plate is provided with a first inner cavity, and a first cam is rotatably connected inside the first inner cavity. The first rotating rod extends into the first inner cavity and is fixedly connected to the first cam. The interior of the large plate is provided with a second inner cavity, and a second cam is rotatably connected inside the second inner cavity. The second rotating rod extends into the second inner cavity and is fixedly connected to the first cam.

[0015] A chute is provided between the first inner cavity and the second inner cavity. A first clamping plate and a second clamping plate are slidably connected inside the chute. A first spring is fixedly installed between the first clamping plate and the inner wall of the chute. The first clamping plate is arranged corresponding to the first cam. A second spring is fixedly installed between the second clamping plate and the inner wall of the chute. The second clamping plate is arranged corresponding to the second cam.

[0016] The nut is an eccentric self-locking anti-loosening nut, including a nut body (36) with a main threaded hole and a self-locking nut with a self-locking threaded hole. The middle part of the upper end face of the nut body has a tapered boss extending upward. The main threaded hole penetrates through the tapered boss. The central axis of the tapered boss and the central axis of the main threaded hole have an eccentric distance. The lower end face of the self-locking nut has a tapered hole for sleeving on the eccentric boss. The taper of the tapered boss is the same as the taper of the tapered hole. The central axis of the tapered hole coincides with the central axis of the self-locking threaded hole. The protruding height of the tapered boss is less than the recessed depth of the tapered hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) In this solution, an integrated full-automatic processing unit is constructed, coordinating an intelligent tapping module and a high-precision feeding system to achieve a continuous process for the entire process of nut processing. This system real-time corrects tapping parameters through a closed-loop quality control system, and eliminates workpiece positioning deviation with an adaptive compensation mechanism. While completely eliminating manual intervention, it ensures tapping accuracy and process stability. This automated solution significantly improves the process connection efficiency in batch operation scenarios, effectively eliminates the quality fluctuation risk caused by the traditional discrete operation mode, and realizes the synchronous optimization of processing efficiency and product consistency. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is of the present invention Figure 1 enlarged schematic diagram at A in;

[0021] Figure 3 is of the present invention Figure 1 enlarged schematic diagram at B in;

[0022] Figure 4 is a bottom view of the overall structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged schematic view at C in

[0024] Figure 6 Overall structural sectional view of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged schematic view at D in

[0026] Figure 8 For the present invention Figure 6 Enlarged schematic view at E in

[0027] Figure 9 Sectional schematic view of the nut of the present invention.

[0028] Description of reference numerals in the figure:

[0029] 1. Small plate; 2. Large plate; 3. Support leg; 4. Flow groove; 5. Push groove; 6. Motor; 7. Cross bar one; 8. Clamping block one; 9. Rotating shaft one; 10. Double-sided toothed ring one; 11. Cross bar two; 12. Double-sided toothed ring two; 13. Rotating shaft two; 14. Transmission wheel; 15. Eccentric column; 16. Transmission rod; 17. Fixed column; 18. Slide rail; 19. Limit groove; 20. Clamping block two; 21. Nut; 22. Rotating rod one; 23. Gear one; 24. Inner cavity one; 25. Cam one; 26. Clamping plate one; 27. Spring one; 28. Chute; 29. Rotating rod two; 30. Gear two; 31. Cam two; 32. Inner cavity two; 33. Clamping plate two; 34. Spring two; 35. Cross bar three; 36. Nut body; 37. Self-locking nut. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 9, a composite nut and its production equipment, including a large plate 2, a small plate 1 is fixedly installed at the rear end of the large plate 2, support legs 3 are fixedly installed on the outer surfaces of both the large plate 2 and the lower plate, a flow groove 4 is arranged on the upper end surface of the large plate 2, a push groove 5 is communicated inside the flow groove 4, and a full-automatic processing mechanism is arranged between the large plate 2 and the small plate 1. The full-automatic processing mechanism includes a first pusher arranged above the large plate 2. The first pusher includes a motor 6 embeddedly connected to the upper end surface of the large plate 2. The end of the upper output shaft of the motor 6 is fixedly installed with a first cross bar 7. The end of the first cross bar 7 is fixedly installed with a first clamping block 8. The first clamping block 8 is slidably connected inside the push groove 5. The first cross bar 7 and the first clamping block 8 are correspondingly arranged in three groups and are annularly dispersed. The lower end surface of the large plate 2 is rotatably connected with a first rotating shaft 9. The lower output shaft of the motor 6 is fixedly connected to the first rotating shaft 9.

[0032] The full-automatic processing mechanism includes a second pusher arranged above the small plate 1. A double-sided tooth ring 10 is arranged below the large plate 2. A second cross bar 11 is fixedly installed between the first rotating shaft 9 and the double-sided tooth ring 10.

[0033] One side of the double-sided tooth ring 10 meshes with a double-sided tooth ring 12. The lower end surface of the small plate 1 is rotatably connected with a second rotating shaft 13. A third cross bar 35 is fixedly installed between the second rotating shaft 13 and the double-sided tooth ring 12.

[0034] A transmission wheel 14 is arranged above the small plate 1. The upper end of the rotating shaft extends to the upper side of the small plate 1 and is fixedly connected to the transmission wheel 14. An eccentric column 15 is eccentrically installed on the upper end surface of the transmission wheel 14. A fixed column 17 is fixedly installed on the upper end surface of the small plate 1. A transmission rod 16 is rotatably connected to the outer surface of the fixed column 17. A slide rail 18 is opened on the upper end surface of the transmission rod 16. The eccentric column 15 is slidably connected to the slide rail 18.

[0035] A limiting groove 19 is opened on the upper end surface of the small plate 1. A second clamping block 20 is slidably connected inside the limiting groove 19. The limiting groove 19 is communicated with the flow groove 4. A nut 21 is arranged inside the flow groove 4. The nut 21 is arranged between the second clamping block 20 and one of the first clamping blocks 8.

[0036] The push groove 5 and the limiting groove 19 have the same diameter as the flow groove 4. The depths of the push groove 5 and the limiting groove 19 are both five centimeters shallower than that of the flow groove 4.

[0037] The device is used in cooperation with an external wire drilling device to perform wire drilling operations on the nut 21. The external nut 21 conveying device can convey the nut 21 to be tapped into the device through the flow groove 4. At the same time, the motor 6 is started. The upper output shaft of the motor 6 drives the cross bar one 7 to rotate. The cross bar one 7 is fixedly connected to the clamp one 8 slidably connected inside the flow groove 4. Therefore, the clamp one 8 enters the flow groove 4 from the push groove 5 and pushes the conveyed nut 21. Synchronously, the lower output shaft of the motor 6 drives the rotating shaft one 9 to rotate. The rotating shaft one 9 drives the double-sided gear ring one 10 to rotate through the cross bar two 11. The double-sided gear ring one 10 meshes with the double-sided gear ring two 12. The double-sided gear ring two 12 drives the rotating shaft two 13 to rotate through the cross bar three 35. The driving wheel 14 at the upper end of the rotating shaft two 13 rotates synchronously. An eccentric column 15 is eccentrically installed on the driving wheel 14. The eccentric column 15 is also slidably connected to the slide rail 18 on the transmission rod 16. Therefore, as the eccentric column 15 rotates, the transmission rod 16 will swing reciprocally around the fixed column 17. When the clamp one 8 pushes the nut 21 to the middle of the flow groove 4, the transmission rod 16 synchronously drives the clamp two 20 to slide into the flow groove 4 from the limit groove 19 and cooperate with the clamp one 8 to fix the nut 21.

[0038] The full-automatic processing mechanism further includes fixing parts arranged inside the large plate 2 and the small plate 1. The fixing parts include a rotating rod one 22 rotatably connected to the lower end face of the small plate 1. A gear one 23 is fixedly installed at the lower end of the rotating rod one 22. The gear one 23 meshes with the double-sided gear two 30.

[0039] The fixing parts further include a rotating rod two 29 rotatably connected to the lower end face of the large plate 2. A gear two 30 is fixedly installed at the lower end of the rotating rod two 29. The gear two 30 meshes with the double-sided gear one 23.

[0040] An inner cavity one 24 is formed inside the small plate 1. A cam one 25 is rotatably connected inside the inner cavity one 24. The rotating rod one 22 extends into the inner cavity one 24 and is fixedly connected to the cam one 25. An inner cavity two 32 is formed inside the large plate 2. A cam two 31 is rotatably connected inside the inner cavity two 32. The rotating rod two 29 extends into the inner cavity two 32 and is fixedly connected to the cam one 25.

[0041] A chute 28 is formed between the inner cavity one 24 and the inner cavity two 32. A clamp plate one 26 and a clamp plate two 33 are slidably connected inside the chute 28. A spring one 27 is fixedly installed between the clamp plate one 26 and the inner wall of the chute 28. The clamp plate one 26 is correspondingly arranged with the cam one 25. A spring two 34 is fixedly installed between the clamp plate two 33 and the inner wall of the chute 28. The clamp plate two 33 is correspondingly arranged with the cam two 31.

[0042] The bilateral gear ring 10 meshes with the gear 30 on the second rotating rod 29. Therefore, the second rotating rod 29 will carry the second cam 31 to deflect and squeeze the second clamping plate 33 to the nut 21. Synchronously, the bilateral gear ring 12 meshes with the gear 1 on the first rotating rod 22. Therefore, the first rotating rod 22 will carry the first cam 25 to deflect and squeeze the first clamping plate 26 to the nut 21. The first clamping plate 26 and the second clamping plate 33 cooperate with each other to limit and fix the nut 21. Subsequently, start the external tapping system to tap the nut 21 in the fixed state. After the tapping is completed, continue to drive the motor 6. At this time, the transmission rod 16 will deflect reversely around the fixed column 17 and carry the second clamping block 20 to retract into the limit groove 19 again. The first cam 25 and the second cam 31 will move away from the first clamping plate 26 and the second clamping plate 33. The first clamping plate 26 and the second clamping plate 33 will return to their original positions under the action of their respective first springs 27 and second springs 34, releasing the fixation of the nut 21. Then, the first clamping block 8 will continue to push the nut 21 that has completed the tapping operation under the action of the first cross bar 7, so that the nut 21 is pushed out of the device through the flow groove 4. The first clamping block 8 enters the pushing groove 5 according to the track and continues to perform the tapping operation on the next group of nuts 21. Since the diameters of the pushing groove 5 and the limit groove 19 are the same as that of the flow groove 4, and the depths of the pushing groove 5 and the limit groove 19 are both five centimeters shallower than that of the flow groove 4, the nut 21 will not misalign and enter the pushing groove 5 and the limit groove 19, but will move along the track of the flow groove 4.

[0043] Some existing equipment lacks intelligent level, resulting in significant breakpoints in the production process. The core problems are as follows: Key processes such as workpiece positioning and calibration, and clamping state confirmation still rely on manual intervention, forming a discrete operation mode, resulting in a significant extension of the production beat. This discontinuous manufacturing process not only causes risks of quality consistency, but also deteriorates process stability due to manual operation errors, resulting in low overall equipment utilization rate in the batch production scenario and forming a bottleneck in production efficiency. Therefore, this solution realizes the full-process continuous manufacturing process of nut 21 processing by constructing an integrated full-automatic processing unit, coordinating an intelligent tapping module and a high-precision feeding system. This system can correct the tapping parameters in real time through a closed-loop quality control system, and eliminate the workpiece positioning deviation with an adaptive compensation mechanism. While completely eliminating manual intervention, it ensures tapping accuracy and process stability. This automated solution significantly improves the process connection efficiency in the batch operation scenario, effectively eliminates the quality fluctuation risks caused by the traditional discrete operation mode, and realizes the synchronous optimization of processing efficiency and product consistency.

[0044] The nut 21 is an eccentric self-locking anti-loosening nut, including a nut body 36 with a main threaded hole and a self-locking nut 37 with a self-locking threaded hole. The middle part of the upper end face of the nut body 36 has a tapered boss extending upward. The main threaded hole penetrates through the tapered boss. The central axis of the tapered boss and the central axis of the main threaded hole have an eccentric distance. The lower end face of the self-locking nut 37 has a tapered hole for sleeving on the eccentric boss. The taper of the tapered boss is the same as that of the tapered hole. The central axis of the tapered hole coincides with the central axis of the self-locking threaded hole. The protruding height of the tapered boss is less than the recessed depth of the tapered hole.

[0045] Usage method: This device is used in cooperation with an external wire drilling device and a nut conveying device to perform wire drilling operations on the nut 21. The external nut 21 conveying device can convey the nut 21 to be tapped into the device through the flow groove 4. At the same time, the motor 6 is started. The upper output shaft of the motor 6 will drive the cross bar one 7 to rotate. The cross bar one 7 is fixedly connected to the clamp one 8 that slides inside the flow groove 4. Therefore, the clamp one 8 will enter the flow groove 4 from the push groove 5 and push the conveyed nut 21. Synchronously, the lower output shaft of the motor 6 will drive the rotating shaft one 9 to rotate. The rotating shaft one 9 will drive the double-sided gear ring one 10 to rotate through the cross bar two 11. The double-sided gear ring one 10 meshes with the double-sided gear ring two 12. The double-sided gear ring two 12 drives the rotating shaft two 13 to rotate through the cross bar three 35. The transmission wheel 14 at the upper end of the rotating shaft two 13 rotates synchronously. An eccentric column 15 is eccentrically installed on the transmission wheel 14. The eccentric column 15 is also slidably connected to the slide rail 18 on the transmission rod 16. Therefore, as the eccentric column 15 rotates, the transmission rod 16 will swing back and forth around the fixed column 17. When the clamp one 8 pushes the nut 21 to the middle of the flow groove 4, the transmission rod 16 will synchronously carry the clamp two 20 to slide into the flow groove 4 from the limit groove 19 and cooperate with the clamp one 8 to fix the nut 21.

[0046] Secondly, the bilateral gear ring one 10 meshes with the gear two 30 on the rotating rod two 29. Therefore, the rotating rod two 29 will carry the cam two 31 to deflect and squeeze the clamping plate two 33 to the nut 21. Synchronously, the bilateral gear ring two 12 meshes with the gear one 23 on the rotating rod one 22. Therefore, the rotating rod one 22 will carry the cam one 25 to deflect and squeeze the clamping plate one 26 to the nut 21. The clamping plate one 26 and the clamping plate two 33 cooperate with each other to limit and fix the nut 21. Subsequently, start the external tapping system to perform tapping operations on the fixed nut 21. After the tapping is completed, continue to drive the motor 6. At this time, the transmission rod 16 will reverse and deflect around the fixed column 17 and carry the clamping block two 20 to retract into the limiting groove 19 again. The cam one 25 and the cam two 31 will move away from the clamping plate one 26 and the clamping plate two 33. The clamping plate one 26 and the clamping plate two 33 will return to their original positions under the action of their respective spring one 27 and spring two 34, releasing the fixation of the nut 21. Then, the clamping block one 8 will continue to push the nut 21 that has completed the tapping operation under the action of the cross bar one 7, so that the nut 21 is pushed out of the device through the flow groove 4. The clamping block one 8 enters the pushing groove 5 according to the track and continues to perform tapping operations on the next group of nuts 21. Since the diameters of the pushing groove 5, the limiting groove 19 and the flow groove 4 are the same, and the depths of the pushing groove 5 and the limiting groove 19 are both five centimeters shallower than the flow groove 4, the nut 21 will not misalign and enter the pushing groove 5 and the limiting groove 19, but will move along the track of the flow groove 4.

[0047] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A composite nut and its production equipment, including a large plate (2), a small plate (1) is fixedly installed at the rear end of the large plate (2), and support legs (3) are fixedly installed on the outer surfaces of both the large plate (2) and the lower plate. It is characterized in that: A flow groove (4) is provided on the upper end surface of the large plate (2). A push groove (5) is communicated inside the flow groove (4). An automatic processing mechanism is provided between the large plate (2) and the small plate (1). The automatic processing mechanism includes a first pusher provided above the large plate (2). The first pusher includes a motor (6) embedded and connected to the upper end surface of the large plate (2). The end of the upper output shaft of the motor (6) is fixedly installed with a first cross bar (7). The end of the first cross bar (7) is fixedly installed with a first clamp block (8). The first clamp block (8) is slidably connected inside the push groove (5). Three groups of the first cross bar (7) and the first clamp block (8) are correspondingly arranged and are dispersed in a ring shape. The lower end surface of the large plate (2) is rotatably connected to a first rotating shaft (9). The lower output shaft of the motor (6) is fixedly connected to the first rotating shaft (9).

2. The composite nut and its production equipment according to claim 1, characterized in that: The automatic processing mechanism includes a second pusher provided above the small plate (1). A first double-sided gear ring (10) is provided below the large plate (2). A second cross bar (11) is fixedly installed between the first rotating shaft (9) and the first double-sided gear ring (10).

3. A composite nut and its production equipment according to claim 2, characterized in that: One side of the first double-sided gear ring (10) meshes with a second double-sided gear ring (12). The lower end surface of the small plate (1) is rotatably connected to a second rotating shaft (13). A third cross bar (35) is fixedly installed between the second rotating shaft (13) and the second double-sided gear ring (12).

4. A composite nut and its production equipment according to claim 3, characterized in that: A transmission wheel (14) is provided above the small plate (1). The upper end of the rotating shaft extends above the small plate (1) and is fixedly connected to the transmission wheel (14). An eccentric column (15) is eccentrically installed on the upper end surface of the transmission wheel (14). A fixed column (17) is fixedly installed on the upper end surface of the small plate (1). A transmission rod (16) is rotatably connected to the outer surface of the fixed column (17). A slide rail (18) is provided on the upper end surface of the transmission rod (16). The eccentric column (15) is slidably connected to the slide rail (18).

5. A composite nut and its production equipment according to claim 4, characterized in that: A limit groove (19) is provided on the upper end surface of the small plate (1). A second clamp block (20) is slidably connected inside the limit groove (19). The limit groove (19) is communicated with the flow groove (4). A nut (21) is provided inside the flow groove (4). The nut (21) is arranged between the second clamp block (20) and one of the first clamp blocks (8).

6. The composite nut and its production equipment according to claim 5, characterized in that: The push groove (5) and the limit groove (19) have the same diameter as the flow groove (4). The depths of the push groove (5) and the limit groove (19) are both five centimeters shallower than the flow groove (4).

7. A composite nut and its production equipment according to claim 6, characterized in that: The automatic processing mechanism further includes a fixing member provided inside the large plate (2) and the small plate (1). The fixing member includes a first rotating rod (22) rotatably connected to the lower end surface of the small plate (1). A first gear (23) is fixedly installed at the lower end of the first rotating rod (22). The first gear (23) meshes with the second double-sided gear (30). The fixing member further includes a second rotating rod (29) rotatably connected to the lower end surface of the large plate (2). A second gear (30) is fixedly installed at the lower end of the second rotating rod (29). The second gear (30) meshes with the first double-sided gear (23).

8. A composite nut and its production equipment according to claim 7, characterized in that: An inner cavity one (24) is provided inside the small plate (1). A first cam (25) is rotatably connected inside the inner cavity one (24). The first rotating rod (22) extends into the inner cavity one (24) and is fixedly connected to the first cam (25). An inner cavity two (32) is provided inside the large plate (2). A second cam (31) is rotatably connected inside the inner cavity two (32). The second rotating rod (29) extends into the inner cavity two (32) and is fixedly connected to the first cam (25).

9. A composite nut and its production equipment according to claim 8, characterized in that: A sliding groove (28) is provided between the inner cavity one (24) and the inner cavity two (32). A first clamping plate (26) and a second clamping plate (33) are slidably connected inside the sliding groove (28). A first spring (27) is fixedly installed between the first clamping plate (26) and the inner wall of the sliding groove (28). The first clamping plate (26) is arranged corresponding to the first cam (25). A second spring (34) is fixedly installed between the second clamping plate (33) and the inner wall of the sliding groove (28). The second clamping plate (33) is arranged corresponding to the second cam (31).

10. A composite nut and its production equipment according to claim 9, characterized in that: The nut (21) is an eccentric self-locking anti-loosening nut, including a nut body (36) with a main threaded hole and a self-locking nut (37) with a self-locking threaded hole. The middle part of the upper end surface of the nut body (36) has a conical boss extending upward. The main threaded hole penetrates the conical boss. The central axis of the conical boss and the central axis of the main threaded hole have an eccentric distance. The lower end surface of the self-locking nut (37) has a conical hole for sleeving on the eccentric boss. The taper of the conical boss is the same as the taper of the conical hole. The central axis of the conical hole coincides with the central axis of the self-locking threaded hole. The protruding height of the conical boss is less than the recessed depth of the conical hole.

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