Riveting nut assembling device

Abstract

The utility model relates to the technical field of automatic assembling, in particular to a riveting nut assembling device which comprises a bearing table, an implanting mechanism, a limiting mechanism and a power unit. A positioning hole is formed in the bearing table and used for containing a riveting nut. The implanting mechanism is arranged above the bearing table and comprises a guide pipe, a guide pin, a punch, a plug and a limiting groove. The limiting mechanism is installed on the implanting mechanism, one end of the limiting mechanism penetrates through a limiting groove formed in the peripheral side of the guide pipe, and the end, close to the guide needle, of the limiting mechanism can stretch out and draw back. The power unit is installed on the implanting mechanism and controls the guide pipe and the guide needle to move in the axial direction. The riveting nut assembling device can automatically complete operations such as positioning, feeding and riveting, the production efficiency is high, and the product quality is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic assembly, in particular to a riveted nut assembly device. Background Art

[0002] Riveting, as a common connection method, is widely used in various industrial fields.

[0003] Utility model patent publication number CN216370027U discloses an automatic rivet assembly machine, comprising a body, a workpiece placed in the middle of the body, a protective shell mounted in the middle of the body, a positioning mechanism mounted within the protective shell, and a fixed assembly machine body mounted in the middle of the top of the body. Cylinders are symmetrically fixed to the inner sides of the top of the body, and the cylinders are positioned correspondingly to the positioning mechanisms. In operation, the workpiece is first placed in a slot on the body, resting at the bottom of the protective shell. The cylinders then drive the frame downward, and the rack on the frame rotates the gear, which in turn rotates the rocker lever via a turntable. The two rocker levers rotate, squeezing the two sides of the workpiece, respectively, so that the workpiece faces the bottom of the assembly machine body, allowing it to be assembled. However, this device primarily relies on mechanical transmission to achieve workpiece positioning and squeezing, which presents several drawbacks in terms of product automation and consistent processing quality. Furthermore, the device can only perform fixed workpiece positioning and squeezing operations, lacking flexibility and intelligence, and possessing a single function. Summary of the Invention

[0004] The utility model overcomes the shortcomings of the existing technology and provides a riveted nut assembly device to achieve a higher level of automation. It can automatically complete operations such as positioning, loading, and riveting, reduce manual intervention, improve production efficiency, and achieve higher processing accuracy and quality consistency, ensuring stable product quality.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a riveted nut assembly device, comprising:

[0006] The supporting platform is provided with positioning holes for placing riveted nuts.

[0007] The implantation mechanism is positioned above the support platform. It comprises a guide tube, a guide needle, a punch, a plug, and a stopper slot. A guide needle is slidably mounted within the guide tube along its axis, with its axis coinciding with the axis of the positioning hole. A punch is mounted at the lower end of the guide tube, with a gap within the punch allowing the guide needle to pass through the punch along the axis of the guide tube. A plug is mounted at the upper end of the guide tube. An opening is provided around the guide tube, serving as a stopper slot.

[0008] The limiting mechanism is installed on the implanting mechanism. One end of the limiting mechanism passes through the limiting groove arranged on the peripheral side of the guide tube, and the end of the limiting mechanism close to the guide needle can be extended and retracted.

[0009] The power unit is installed on the implant mechanism and controls the guide tube and the guide needle to move axially.

[0010] In a preferred embodiment of the present invention, the implantation mechanism includes a positioning module disposed above the support platform, wherein the positioning module has a gap therein, the guide tube is slidably disposed in the positioning module along the axial direction, and the limiting mechanism is movably disposed in the positioning module.

[0011] In a preferred embodiment of the present invention, the power unit includes a first pressure spring and a second pressure spring. The first pressure spring is mounted within the guide tube, with one end of the first pressure spring abutting against the upper end of the guide needle. The second pressure spring is mounted around the guide tube, with one end of the second pressure spring abutting against the lower end of the plug.

[0012] In a preferred embodiment of the present invention, an air vent is provided on the upper portion of the guide tube for connecting to the power gas.

[0013] In a preferred embodiment of the present invention, the limiting mechanism includes a moving module, a limiting module, a telescopic module, and a servo motor. The moving module is slidably mounted within the positioning module. One end of the telescopic module is slidably disposed within the moving module, and the other end of the telescopic module is connected to the limiting module. The servo motor is power-connected to the telescopic module and controls the telescopic module to slide within the moving module.

[0014] In a preferred embodiment of the present invention, the guide pin includes a primary guide pin and a secondary guide pin. The secondary guide pin is arranged at the lower end of the primary guide pin, and its outer diameter is smaller than that of the primary guide pin, and its outer diameter is smaller than that of the inner diameter of the rivet nut.

[0015] In a preferred embodiment of the present invention, a pair of opposing pendulums are provided on the support platform, one pendulum having an arc-shaped structure at one end adjacent to the other pendulum, the gap formed by the arc-shaped structure serving as a positioning hole. Both pendulums are rotatable, with their rotation axes being perpendicular to the axis of the guide pin.

[0016] In a preferred embodiment of the present invention, a feeding trough is provided on the supporting platform for providing riveted nuts.

[0017] In a preferred embodiment of the present invention, a hook and a cylinder are provided on the support platform. One end of the hook has an arc-shaped structure that fits the rivet nut. The cylinder is dynamically connected to the hook.

[0018] In a preferred embodiment of the present invention, the guide tube includes a stamping portion and a limiting portion, and the cross-section of the stamping portion is smaller than the cross-section of the limiting portion.

[0019] The present invention solves the defects in the background technology and has the following beneficial effects:

[0020] (1) The rivet nut assembly device provided by the utility model realizes the rapid cycle of rivet nut assembly and the automation of the riveting process through a supporting platform, an implanting mechanism arranged above the supporting platform, a limiting mechanism installed on the implanting mechanism and a power unit that provides descending and recovering power for the implanting mechanism. It can be applied to various industrial productions that require riveting operations, such as automobile manufacturing, aerospace, electronic manufacturing, etc., and has wide application value in industrial production.

[0021] (2) The limiting mechanism of the utility model includes a moving module, a limiting module, a telescopic module and a servo motor for controlling the telescopic module. The position of the limiting module is controlled by the servo motor, which can limit the axial movement of the guide pin, control the falling depth of the guide pin, ensure the consistency of the riveting depth, and improve the product quality and consistency.

[0022] (3) The support platform of the utility model is equipped with a hook and a cylinder. The hook has an arc-shaped structure that matches the rivet nut and can easily grasp the rivet nut. The cylinder is connected to the hook by power, and can use air pressure to control the grasping and releasing of the hook, thereby realizing automatic grasping and placement of the rivet nut, reducing manual operation time and labor intensity, reducing human errors, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the riveted nut assembly device in Example 1;

[0024] Figure 2 is a schematic structural diagram of the implantation mechanism in Example 1;

[0025] Figure 3 is a schematic structural diagram of the positioning module in Example 1;

[0026] Figure 4 is a schematic structural diagram of the limiting mechanism in Example 1;

[0027] Figure 5 is a schematic structural diagram of the guide needle in Example 1;

[0028] Figure 6 is a structural diagram of the supporting platform in Example 1;

[0029] Figure 7 is a schematic structural diagram of the power unit in Example 2;

[0030] Figure 8 Schematic diagram of the structure of the guide tube in Example 2.

[0031] In the figure: 1. Support platform; 2. Implantation mechanism; 3. Limiting mechanism; 11. Positioning hole; 12. Ornament; 13. Feeding trough; 14. Hook; 15. Cylinder; 20. Positioning module; 21. Guide tube; 22. Guide needle; 23. Punch; 24. Plug; 25. Limiting slot; 31. Moving module; 32. Limiting module; 33. Telescopic module; 34. Servo motor; 41. First pressure spring; 42. Second pressure spring; 211. Vent; 212. Stamping part; 213. Limiting part; 214. Calibration hole; 221. First-level guide needle; 222. Second-level guide needle. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention. Example 1

[0033] like Figure 1 、 Figure 2 As shown, the riveted nut assembly device in this embodiment includes:

[0034] The supporting platform 1 is provided with a positioning hole 11 for placing the riveting nut.

[0035] The implantation mechanism 2 is arranged above the support platform 1; the implantation mechanism 2 includes a guide tube 21, a guide needle 22, a punch 23, a plug 24 and a limit groove 25. The guide needle 22 is slidably installed along the axis in the guide tube 21, and the axis of the guide needle 22 coincides with the axis of the positioning hole 11. A punch 23 is installed at the lower end of the guide tube 21, and there is a gap inside the punch 23. The guide needle 22 passes through the punch 23 along the axis of the guide tube 21. A plug 24 is installed at the upper end of the guide tube 21. An opening is provided on the circumferential side of the guide tube 21, which is a limit groove 25.

[0036] The limiting mechanism 3 is mounted on the implanting mechanism 2. One end of the limiting mechanism 3 passes through the limiting groove 25 provided on the peripheral side of the guide tube 21, and the end of the limiting mechanism 3 close to the guide needle 22 can be extended and retracted.

[0037] The power unit is installed on the implant mechanism 2, and the power unit controls the guide tube 21 and the guide needle 22 to move axially.

[0038] The rivet nut assembly device provided in this embodiment is suitable for scenarios such as automobile bodies, electronic product housings, and sheet metal processing, which have high requirements for product quality and consistency and a high degree of automation for the installation of rivet nuts.

[0039] During use, place the rivet nut in the positioning hole 11 on the support platform 1 to ensure that it is positioned accurately. The power unit first pushes the guide pin 22 out of the punch 23 and inserts it into the gap in the center of the rivet nut to ensure that its position will not shift. The power unit pushes the implantation mechanism 2 and the rivet nut through positive boosting and implants them into the hole reserved in the workpiece. Under the push of the power unit, the implantation mechanism 2 punches the rivet nut through the punch 23 to form a rivet. The power unit returns the implantation mechanism 2 to its position through reverse boosting and prepares for the next cycle. The limiting mechanism 3 passes through the limiting slot 25 to control the falling and rising position of the guide pin 22 to ensure the accurate falling depth.

[0040] The rivet nut assembly device can fully automatically complete the rivet nut implantation process. The limiting mechanism 3 limits the guide pin 22 to a suitable height, ensuring the accurate position and depth of the rivet nut and improving the riveting quality. In addition, by replacing the guide pin 22 and the punch 23, the device can be used to install rivet nuts of different sizes.

[0041] like Figure 3 As shown, the implant mechanism 2 includes a positioning module 20 disposed above the support platform 1. The positioning module 20 has a space within it, and a guide tube 21 is slidably disposed axially within the positioning module 20. The limiting mechanism 3 is disposed within the positioning module 20. The positioning module 20 is above the support platform 1, and the guide tube 21 is disposed therein, forming a space that limits the vertical motion range of the guide tube 21. This allows the guide tube 21 to move along its axis within the positioning module 20, preventing it from shifting during processing.

[0042] like Figure 2 As shown, the upper portion of the guide tube 21 is provided with a vent 211 for connecting the power gas, allowing the power gas to directly enter the guide tube 21, providing power for the riveting process, ensuring that the guide pin 22 can be quickly lowered and improving the riveting accuracy. In addition, the power unit includes a booster cylinder connected to the plug 24. The booster cylinder applies downward or upward force to the plug 24, thereby pressing the implant mechanism 2 downward or returning it upward.

[0043] like Figure 4 As shown, the limiting mechanism 3 includes a moving module 31, a limiting module 32, a telescopic module 33, and a servo motor 34. The moving module 31 is slidably mounted within the positioning module 20. One end of the telescopic module 33 is slidably disposed within the moving module 31, and the other end of the telescopic module 33 is connected to the limiting module 32. The servo motor 34 is connected to the telescopic module 33 in a power-connected manner. The servo motor 34 controls the telescopic module 33 to slide within the moving module 31, thereby controlling the start and end of the riveted nut assembly:

[0044] Before riveting, the servo motor 34 controls the telescopic module 33 to move away from the guide pin 22, and pulls the limiting module 32 that originally clamps the guide pin 22 backward, so that the guide pin 22 can fall.

[0045] After riveting, the servo motor 34 controls the telescopic module 33 to return to the initial state, so that the limit module 32 clamps the guide pin 22, preparing for the next round of riveting.

[0046] like Figure 5 As shown, the guide pin 22 includes a primary guide pin 221 and a secondary guide pin 222. The secondary guide pin 222 is disposed at the lower end of the primary guide pin 221. The outer diameter of the secondary guide pin 222 is smaller than that of the primary guide pin 221, and the outer diameter of the secondary guide pin 222 is smaller than that of the inner diameter of the rivet nut. During preparation, the limiting module 32 passes through the limiting groove 25 on the guide tube 21 and abuts against the primary guide pin 221, limiting the downward displacement of the guide pin 22 and positioning the guide pin 22 in the correct position. The secondary guide pin 222 is precisely positioned when entering the rivet nut hole, ensuring that the rivet nut accurately enters the reserved hole on the workpiece.

[0047] like Figure 6 As shown, the support platform 1 has a pair of opposing pendulum elements 12. One pendulum element 12 has an arc-shaped structure at one end, adjacent to the other. The gap formed by the arc-shaped structure serves as a positioning hole 11. Both pendulum elements 12 are rotatable, with their rotation axes located within the support platform 1. The positioning holes 11 formed by the two pendulum elements allow the rivet nut to be precisely positioned at the riveted connection point. When the punch 23 descends and strikes the rivet nut, the rotatable pendulum element 12 is forced to rotate, causing the rivet nut, guide pin 22, and punch 23 to continue to descend, thus completing the riveting process.

[0048] like Figure 6 As shown, a feeding trough 13 is provided on the supporting platform 1 to provide riveted nuts and provide a space for storing riveted nuts for easy loading.

[0049] like Figure 6 As shown, the support platform 1 is provided with a hook 14 and a cylinder 15. One end of the hook 14 has an arcuate structure that mates with the rivet nut. The cylinder 15 is power-connected to the hook 14. The arcuate structure ensures that the rivet nut slides smoothly into the hook and prevents it from getting stuck. The hook 14 prevents the entry of rivet nuts of the wrong size, acting as a screening mechanism. The cylinder 15 pushes the hook 14, pushing the rivet nut from the feed chute 13 to the assembly position, automating the loading process, improving efficiency, and reducing manual labor. Example 2

[0050] This embodiment differs from embodiment 1 in that:

[0051] like Figure 7As shown, the power unit includes a first pressure spring 41 and a second pressure spring 42. The first pressure spring 41 is mounted inside the guide tube 21, with one end of the first pressure spring 41 abutting the upper end of the guide needle 22. The second pressure spring 42 is mounted around the guide tube 21, with one end of the second pressure spring 42 abutting the lower end of the plug 24.

[0052] The first pressure spring 41 provides power to the guide pin 22. When riveting is required, it is in a compressed state, providing downward force to the guide pin 22, ensuring that the guide pin 22 can be quickly inserted into the rivet nut. After riveting is completed, it is in a stretched state, providing upward force to the guide pin 22, causing it to rebound quickly, preparing for the next riveting cycle.

[0053] The second pressure spring 42 provides power to the guide tube 21: after riveting is completed, it is in a compressed state, providing upward power to the guide tube 21, so that the guide tube 21 rebounds quickly and prepares for the next riveting cycle.

[0054] like Figure 8 The guide tube 21 includes a punching portion 212 and a stopper 213. The cross-section of the punching portion 212 is smaller than that of the stopper 213. The stopper 213 with a larger cross-section abuts against the support platform 1 during the falling process, which can prevent the punch 23 from falling too deep, thereby avoiding damage to the workpiece or causing riveting failure.

[0055] like Figure 8 As shown, a calibration hole 214 is provided on the peripheral side of the stamping portion 212 of the guide tube 21 for screwing in a screw. By adjusting the depth of the screw, it is ensured that the guide pin 22 always falls along the axial direction, avoiding the guide pin 22 from deviating during the falling process, reducing errors, and improving riveting accuracy.

[0056] The above description is based on the ideal embodiment of the present invention. Through the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this utility model. The technical scope of this utility model is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A riveted nut assembly device, characterized in that: include: A supporting platform (1), wherein a positioning hole (11) is provided on the supporting platform (1) for placing a rivet nut; An implantation mechanism (2), wherein the implantation mechanism (2) is arranged above the support platform (1); the implantation mechanism (2) comprises a guide tube (21), a guide needle (22), a punch (23), a plug (24) and a limiting groove (25); the guide needle (22) is slidably mounted along an axis in the guide tube (21), and the axis of the guide needle (22) coincides with the axis of the positioning hole (11); the punch (23) is mounted at the lower end of the guide tube (21), and a gap is provided inside the punch (23), and the guide needle (22) passes through the punch (23) along the axis direction of the guide tube (21); the plug (24) is mounted at the upper end of the guide tube (21); an opening is provided on the peripheral side of the guide tube (21), which is the limiting groove (25); A limiting mechanism (3), the limiting mechanism (3) being mounted on the implanting mechanism (2); one end of the limiting mechanism (3) passing through a limiting groove (25) provided on the circumference of the guide tube (21), and the end of the limiting mechanism (3) close to the guide needle (22) being capable of extension and contraction; A power unit is installed on the implant mechanism (2), and the power unit controls the guide tube (21) and the guide needle (22) to move axially.

2. The rivet nut assembly device according to claim 1, characterized in that: The implant mechanism (2) includes a positioning module (20) arranged above the support platform (1); a gap is provided inside the positioning module (20); the guide tube (21) is slidably arranged in the positioning module (20) along the axial direction; and the limiting mechanism (3) is movably arranged in the positioning module (20).

3. The rivet nut assembly device according to claim 2, characterized in that: The power unit includes a first pressure spring (41) and a second pressure spring (42); the first pressure spring (41) is installed inside the guide tube (21), and one end of the first pressure spring (41) abuts against the upper end of the guide needle (22); the second pressure spring (42) is installed on the peripheral side of the guide tube (21), and one end of the second pressure spring (42) abuts against the lower end of the plug (24).

4. The rivet nut assembly device according to claim 2, characterized in that: An air vent (211) is provided on the upper portion of the guide tube (21) for connecting power gas.

5. The rivet nut assembly device according to claim 2, characterized in that: The limiting mechanism (3) comprises a moving module (31), a limiting module (32), a telescopic module (33) and a servo motor (34); the moving module (31) is slidably mounted in the positioning module (20); one end of the telescopic module (33) is slidably disposed in the moving module (31), and the other end of the telescopic module (33) is connected to the limiting module (32); the servo motor (34) is power-connected to the telescopic module (33), and the servo motor (34) controls the telescopic module (33) to slide in the moving module (31).

6. The rivet nut assembly device according to claim 1, characterized in that: The guide needle (22) comprises a primary guide needle (221) and a secondary guide needle (222) arranged at the lower end of the primary guide needle (221); the outer diameter of the secondary guide needle (222) is smaller than the outer diameter of the primary guide needle (221), and the outer diameter of the secondary guide needle (222) is smaller than the inner diameter of the rivet nut.

7. The rivet nut assembly device according to claim 2, characterized in that: A pair of oppositely arranged pendulums (12) are provided on the support platform (1), one end of one pendulum (12) close to the other pendulum (12) has an arc-shaped structure, and the gap surrounded by the arc-shaped structure is a positioning hole (11); the pendulums (12) are both rotatable, and the rotation axis of the pendulum (12) is perpendicular to the axis of the guide needle (22).

8. The rivet nut assembly device according to claim 2, characterized in that: The support platform (1) is provided with a feeding trough (13) for providing riveted nuts.

9. The rivet nut assembly device according to claim 8, characterized in that: A hook (14) and a cylinder (15) are provided on the support platform (1); one end of the hook (14) has an arc-shaped structure, and the arc-shaped structure is adapted to the rivet nut; the cylinder (15) is dynamically connected to the hook (14).

10. The rivet nut assembly device according to claim 2, characterized in that: The guide tube (21) comprises a stamping portion (212) and a limiting portion (213), and the cross-section of the stamping portion (212) is smaller than the cross-section of the limiting portion (213).

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