Automatic feeding mechanism of squeeze riveter

Abstract

The utility model discloses an automatic feeding mechanism of a squeeze riveter, which belongs to the technical field of squeeze riveters and comprises a guide frame, an L-shaped connecting frame is fixedly connected below the end of the guide frame, a support disc is fixedly connected to the side of the L-shaped connecting frame, and a servo motor is fixedly mounted at the bottom of the support disc. An output shaft of the servo motor extends to the top of the supporting disc and is provided with a fixing mechanism, and a rivet pressing mechanism is arranged at the top of the fixing mechanism. According to the riveting device, the guide frame, the first electric push rods and the limiting plates are used in cooperation, the first electric push rods on the two sides of the guide frame are used for driving the two limiting plates to be close to each other or away from each other, and therefore the distance between the two limiting plates is adjusted, and the distance between the two limiting plates is made to be equal to the outer diameter of a pressing rivet nut; and meanwhile, it is guaranteed that the conveyed nuts are flush, and the practicability of the automatic feeding mechanism of the squeeze riveter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting machines, and specifically, to an automatic feeding mechanism of a riveting machine. Background Art

[0002] A riveting machine is a new type of riveting equipment developed based on the principle of cold rolling. It refers to a mechanical device that can rivet items with rivets. The riveted parts of riveting have the characteristics of good surface quality, small deformation, and high connection strength. In actual operation, as long as the structural processability permits, riveting is preferred. Moreover, in the process of aircraft product processing, a riveting machine is also required. In order to ensure the efficiency of riveting, automatic feeding is carried out for the riveting machine.

[0003] After retrieval, the utility model patent with the publication number of CN211660909U discloses a riveting nut feeding mechanism and a riveting machine including the same. The riveting nut feeding mechanism includes a feeding block provided with a feeding chute and a riveting chute. The riveting chute is located at the right end of the feeding chute. At a position corresponding to the riveting chute on the lower side surface of the feeding block, there is a support block with one end hinged to the feeding block and the other end extending into the riveting chute and rotating in the up and down direction. A spring is provided between the feeding block and the support block for elastically supporting the extending end of the support block upward so that the extending end supports the riveting bolt located in the riveting chute. This patent will not have a jamming problem and solves the problem of the failure of riveting nut feeding caused by sliding jamming in the prior art.

[0004] However, the above patent still has the following deficiencies: The feeding block is not convenient for limiting nuts with different shapes and sizes. When feeding nuts with a smaller outer dimension, it is not easy to ensure that the nuts are flush, which will affect the feeding of the nuts. In addition, when riveting nuts with different sizes, it is not easy to ensure that the nuts to be riveted are just moved directly below the riveting head, which will affect the quality of riveting. For this reason, we propose an automatic feeding mechanism of a riveting machine. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an automatic feeding mechanism of a riveting machine.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] An automatic feeding mechanism for a riveting machine, comprising a material guiding frame. Below the end of the material guiding frame, an L-shaped connecting frame is fixedly connected. On the side of the L-shaped connecting frame, a supporting disc is fixedly connected. At the bottom of the supporting disc, a servo motor is fixedly installed. The output shaft of the servo motor extends to the top of the supporting disc and is provided with a fixing mechanism. At the top of the fixing mechanism, a riveting mechanism is provided. A riveting hole is opened on the supporting disc. A cover plate is hinged to the top of the material guiding frame. On both sides of the material guiding frame, a group of first electric push rods are respectively fixedly installed. The output ends of the two groups of first electric push rods respectively extend into the inner cavity of the material guiding frame and are fixedly connected with limiting plates.

[0008] As a preferred embodiment of the present invention, the fixing mechanism includes a fixing disc fixedly connected to the top end of the output shaft of the servo motor. On the top surface of the fixing disc, a feeding disc is fixedly connected. The side surface of the feeding disc is in contact with the end surface of the material guiding frame. Two feeding grooves are opened on the side surface of the feeding disc. Below the two feeding grooves on the top surface of the fixing disc, hexagonal holes are respectively opened. Six receiving grooves are opened on the inner wall of the hexagonal hole. In the inner cavity of each of the six receiving grooves, a second electric push rod is fixedly installed. The output ends of the second electric push rods are all fixedly connected with pressing plates.

[0009] As a preferred embodiment of the present invention, the riveting mechanism includes a column fixedly connected to the top surface of the feeding disc and a through groove opened on the top surface of the feeding disc. The bottom end of the through groove is communicated with the inner cavity of the feeding groove. At the top end of the column, a mounting plate is fixedly connected. At the top surfaces of both ends of the mounting plate, air cylinders are respectively fixedly installed. The output ends of the air cylinders respectively extend to the bottom of the mounting plate and are fixedly connected with mounting threaded cylinders. Pressing heads are respectively threadedly installed on the mounting threaded cylinders.

[0010] As a preferred embodiment of the present invention, a control panel is fixedly installed on the outside of the material guiding frame. The control panel is electrically connected to the first electric push rod, the servo motor, the second electric push rod, and the air cylinder respectively.

[0011] As a preferred embodiment of the present invention, the top surface and the bottom surface of the side of the fixing disc are respectively in contact with the bottom surface of the material guiding frame and the top surface of the supporting disc.

[0012] As a preferred embodiment of the present invention, the pressing head is located directly above the through groove.

[0013] Compared with the prior art, the advantages of the present invention are as follows:

[0014] (1) In this utility model, through the combined use of a material guiding frame, a first electric push rod, and a limiting plate, the first electric push rods on both sides of the material guiding frame are used to drive the two limiting plates to approach or move away from each other, thereby adjusting the distance between the two limiting plates to be equal to the outer diameter of the rivet nut, ensuring stable transportation of the rivet nut and ensuring the flatness of the transported nut.

[0015] (2) In this utility model, when the end of the feeding groove is aligned with the end of the material guiding frame, the nuts in the material guiding frame move to the feeding groove under vibration. At this time, the bottom end of the nut entering the inner cavity of the feeding groove drops into the inner cavity of the hexagonal hole. Multiple second electric push rods drive multiple pressing plates to push the side of the rivet nut, realizing the fixation of the nut and simultaneously making the nut located in the middle of the inner cavity of the hexagonal hole, ensuring that the nut to be riveted just moves to directly below the riveting head, improving the working quality of the automatic feeding mechanism of this riveting machine. Brief Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a schematic cross-sectional view of this utility model;

[0018] Figure 3 is a schematic diagram of the structure of the material guiding frame of this utility model;

[0019] Figure 4 is a schematic diagram of the structure of the feeding tray of this utility model;

[0020] Figure 5 is a schematic cross-sectional view of the fixed disk of this utility model.

[0021] Explanation of the reference numerals in the drawings:

[0022] 1. Material guiding frame; 2. L-shaped connecting frame; 3. Support disk; 4. Riveting hole; 5. First electric push rod; 6. Limiting plate; 7. Cover plate; 8. Fixing mechanism; 9. Riveting mechanism; 10. Servo motor; 11. Fixed disk; 12. Feeding tray; 13. Feeding groove; 14. Hexagonal hole; 15. Storage groove; 16. Second electric push rod; 17. Pressing plate; 18. Through groove; 19. Column; 20. Cylinder; 21. Installation threaded cylinder; 22. Riveting head; 23. Control panel; 24. Installation plate. Detailed Description of the Embodiment

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Embodiment:

[0027] Please refer to Figures 1-5 , an automatic feeding mechanism of a riveting machine, including a material guiding frame 1. A downward L-shaped connecting frame 2 is fixedly connected to the lower end of the end of the material guiding frame 1. A supporting disc 3 is fixedly connected to the side of the L-shaped connecting frame 2. A servo motor 10 is fixedly installed at the bottom of the supporting disc 3. The output shaft of the servo motor 10 extends to the top of the supporting disc 3 and is provided with a fixing mechanism 8. A riveting mechanism 9 is arranged at the top of the fixing mechanism 8. A riveting hole 4 is opened on the supporting disc 3. A cover plate 7 is hinged to the top of the material guiding frame 1. A group of first electric push rods 5 are respectively fixedly installed on both sides of the material guiding frame 1. The output ends of the two groups of first electric push rods 5 respectively extend into the inner cavity of the material guiding frame 1 and are fixedly connected with a limiting plate 6.

[0028] In this embodiment, the front end of the material guiding frame 1 is connected to a circular vibrating screen, so as to introduce the riveting nuts into the material guiding frame 1 and make the riveting nuts move in the material guiding frame 1.

[0029] Specifically, please refer to Figures 1 to 5, the fixing mechanism 8 includes a fixing plate 11 fixedly connected to the top end of the output shaft of the servo motor 10. The top surface of the fixing plate 11 is fixedly connected with a feeding plate 12. The side surface of the feeding plate 12 is in contact with the end surface of the material guiding frame 1. Two feeding grooves 13 are opened on the side surface of the feeding plate 12. Hexagonal holes 14 are respectively opened on the top surface of the fixing plate 11 and below the two feeding grooves 13. Six receiving grooves 15 are opened on the inner wall of the hexagonal holes 14. Second electric push rods 16 are fixedly installed in the inner cavities of the six receiving grooves 15. The output ends of the second electric push rods 16 are fixedly connected with pressing plates 17.

[0030] In this embodiment, the height of the fixing plate 11 is less than the height of the rivet nut. When a rivet nut moves into the feeding groove 13, the bottom end of the rivet nut drops into the hexagonal hole 14, and at the same time, the top end of the rivet nut is still located in the inner cavity of the feeding groove 13. At this time, the nut part in the inner cavity of the feeding groove 13 is used to block other nuts to prevent too many nuts from entering the feeding groove 13.

[0031] Specifically, please refer to Figure 1 , the riveting mechanism 9 includes a column 19 fixedly connected to the top surface of the feeding plate 12 and a through groove 18 opened on the top surface of the feeding plate 12. The bottom end of the through groove 18 is communicated with the inner cavity of the feeding groove 13. The top end of the column 19 is fixedly connected with a mounting plate 24. Air cylinders 20 are respectively fixedly installed on the top surfaces at both ends of the mounting plate 24. The output ends of the air cylinders 20 extend to the bottom of the mounting plate 24 and are fixedly connected with mounting threaded cylinders 21. Riveting heads 22 are respectively threadedly installed on the mounting threaded cylinders 21.

[0032] In this embodiment, the threaded fit between the riveting head 22 and the mounting threaded cylinder 21 can replace the riveting head 22, so as to rivet different-shaped rivet nuts with different outer diameters by using the riveting heads 22 with different outer diameters.

[0033] Specifically, please refer to Figures 1 to 5 , an operation panel 23 is fixedly installed on the outer side of the material guiding frame 1. The operation panel 23 is electrically connected to the first electric push rod 5, the servo motor 10, the second electric push rod 16, and the air cylinder 20 respectively.

[0034] In this embodiment, the operation panel 23 is used to control the first electric push rod 5, the servo motor 10, the second electric push rod 16, and the air cylinder 20.

[0035] Specifically, please refer to Figure 1 , the top surface and the bottom surface of the side of the fixing plate 11 are respectively in contact with the bottom surface of the material guiding frame 1 and the top surface of the supporting plate 3.

[0036] In this embodiment, it is ensured that the fixing plate 11 is stably located on the top of the supporting plate 3.

[0037] Specifically, please refer to Figure 1 andFigure 2 , the riveting head 22 is located directly above the through groove 18.

[0038] In this embodiment, it is ensured that the bottom end of the riveting head 22 can extend into the through groove 18, so as to rivet the riveting nut in the hexagonal hole 14.

[0039] Working principle: When in use, first start the two groups of first electric push rods 5 to drive the two limiting plates 6 to move, so as to adjust the distance between the two limiting plates 6, making the distance between the two limiting plates 6 equal to the outer diameter of the riveting nut, so as to utilize the vibration of the material guiding frame 1 to convey riveting nuts of different shapes and sizes. Then, regularly start the servo motor 10 to drive the feeding disk 12 to rotate 180 degrees. When the feeding groove 13 is aligned with the end of the material guiding frame 1, one riveting nut in the material guiding frame 1 enters the feeding groove 13 and makes the riveting nut fall into the hexagonal hole 14. At this time, start the multiple second electric push rods 16 on the side of the hexagonal hole 14, use the second electric push rods 16 to drive the extrusion plates 17 to move, and use the multiple extrusion plates 17 to push and fix the riveting nut to the middle of the inner cavity of the hexagonal hole 14. Then, the servo motor 10 drives the feeding disk 12 and the nut to rotate 180 degrees again, making the riveting nut move to the riveting hole 4. At this time, another feeding groove 13 on the side of the feeding disk 12 moves to be aligned with the material guiding frame 1. Finally, start the cylinder 20 to drive the mounting threaded cylinder 21 and the riveting head 22 to move down, and use the riveting head 22 to push the riveting nut in the hexagonal hole 14 to move down, so as to realize riveting of the nut, and that's it.

[0040] The above is only a preferred specific embodiment of the present invention, but 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 all should be covered by the protection scope of the present invention.

Claims

1. An automatic feeding mechanism of a riveting machine, comprising a material guide frame (1), characterized in that: An L-shaped connecting frame (2) is fixedly connected below the end of the material guide frame (1), a support plate (3) is fixedly connected to the side of the L-shaped connecting frame (2), a servo motor (10) is fixedly installed at the bottom of the support plate (3), an output shaft of the servo motor (10) extends to the top of the support plate (3) and is provided with a fixing mechanism (8), a riveting mechanism (9) is provided at the top of the fixing mechanism (8), a riveting hole (4) is provided on the support plate (3), a cover plate (7) is hinged at the top of the material guide frame (1), and a group of first electric push rods (5) are fixedly installed on both sides of the material guide frame (1), and the output ends of the two groups of the first electric push rods (5) respectively extend to the inner cavity of the material guide frame (1) and are fixedly connected to the limiting plate (6).

2. The automatic feeding mechanism of a riveting machine according to claim 1, characterized in that: The fixing mechanism (8) comprises a fixing plate (11) fixedly connected to the top end of the output shaft of the servo motor (10); a feed plate (12) is fixedly connected to the top surface of the fixing plate (11); the side surface of the feed plate (12) is in contact with the end surface of the guide frame (1); two feed grooves (13) are provided on the side surface of the feed plate (12); hexagonal holes (14) are provided on the top surface of the fixing plate (11) and below the two feed grooves (13); six receiving grooves (15) are provided on the inner wall of the hexagonal hole (14); the inner cavities of the six receiving grooves (15) are fixedly mounted with second electric push rods (16); and the output ends of the second electric push rods (16) are fixedly connected with extrusion plates (17).

3. The automatic feeding mechanism of a riveting machine according to claim 2, characterized in that: The pressure riveting mechanism (9) comprises a column (19) fixedly connected to the top surface of the feed tray (12) and a through groove (18) opened on the top surface of the feed tray (12); the bottom end of the through groove (18) is connected to the inner cavity of the feed trough (13); the top end of the column (19) is fixedly connected to a mounting plate (24); the top surfaces of both ends of the mounting plate (24) are respectively fixedly mounted with cylinders (20); the output ends of the cylinders (20) extend to the bottom of the mounting plate (24) and are fixedly connected with mounting threaded cylinders (21); and the mounting threaded cylinders (21) are respectively threadedly mounted with pressure riveting heads (22).

4. The automatic feeding mechanism of a riveting machine according to claim 3 is characterized in that: A control panel (23) is fixedly mounted on the outer side of the material guide frame (1), and the control panel (23) is electrically connected to the first electric push rod (5), the servo motor (10), the second electric push rod (16), and the cylinder (20) respectively.

5. The automatic feeding mechanism of a riveting machine according to claim 2, characterized in that: The top surface and the bottom surface of the side surface of the fixing plate (11) are respectively in contact with the bottom surface of the material guide frame (1) and the top surface of the supporting plate (3).

6. The automatic feeding mechanism of a riveting machine according to claim 3, characterized in that: The rivet head (22) is located directly above the through groove (18).

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