CN216859725U

CN216859725U - Elastic floating mechanism of automatic rivet nut gun

Info

Publication number: CN216859725U
Application number: CN202123371607.5U
Authority: CN
Inventors: 曹璨; 姚峰
Original assignee: Suzhou Swansea Intelligent Equipment Technology Co ltd
Current assignee: Suzhou Swansea Intelligent Equipment Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-01
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses an elastic floating mechanism of an automatic rivet nut gun, which comprises an installation back plate, wherein a two-stage floating mechanism and a driving device for driving the rivet nut gun to move are also arranged on the installation back plate; the two-stage floating mechanism comprises a first-stage floating unit and a second-stage floating unit arranged on the first-stage floating unit, the first-stage floating unit is connected with the driving device, and the rivet nut gun is arranged on the second-stage floating unit; the primary floating unit comprises a mounting plate and a primary spring which are connected with the driving device, the driving device drives the mounting plate to compress the primary spring, the secondary floating unit comprises a secondary guide device and a secondary spring which are arranged on the mounting plate, and the rivet nut gun is connected to the secondary guide device in a sliding manner; the secondary spring is abutted against the blind rivet nut gun, and the blind rivet nut gun can compress the secondary spring when sliding on the secondary guide device. The utility model can insert the rivet nut gun into the product hole quickly and accurately, and improves the efficiency and quality of automatic rivet.

Description

Elastic floating mechanism of automatic rivet nut gun

Technical Field

The utility model relates to the technical field of rivet pulling equipment, in particular to an elastic floating mechanism of an automatic rivet pulling nut gun.

Background

The rivet nut is used as a fastener and is developed for solving the problems that a metal sheet and a thin pipe welded nut are easy to melt, tapping internal threads are easy to slip, and the like; the riveting tool does not need tapping internal threads or welding nuts, is firm in riveting and high in efficiency, and is convenient to use; the method is widely used for assembling electromechanical and light industrial products such as automobiles, aviation, instruments, furniture and the like.

At present, on some intelligent production lines, a robot or a three-axis platform is used for driving a rivet nut gun to automatically rivet a product, so that the labor is replaced, and the production efficiency is improved; however, the current common installation method of the rivet nut gun of the robot or the three-axis platform is as follows: directly installing a rivet nut gun on a base plate of a three-axis platform or a flange plate of a robot; this leads to several problems: firstly, due to the uncontrollable height difference of a product, when a robot or a three-axis platform drives a rivet nut gun to be inserted into a product hole, the action needs to be very slow, and the fact that the rivet gun can be flatly attached to the product every time is difficult to ensure; secondly, when the rivet is removed after the rivet is pulled, the Z-axis of the three-axis platform is required to be matched and lifted, or the robot is matched and lifted, so that the speed is very low, and the screw of the rivet nut gun is easily damaged.

Therefore, in view of the above problems, there is a need for an improvement of the current automatic rivet pulling apparatus.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an elastic floating mechanism of an automatic riveting nut gun, which is used for improving the working efficiency of a robot or a three-axis platform during automatic riveting and improving the quality of automatic riveting.

The utility model is realized by the following technical scheme:

an elastic floating mechanism of an automatic rivet nut gun comprises an installation back plate for installing the rivet nut gun, wherein a two-stage floating mechanism and a driving device for driving the rivet nut gun to move are further arranged on the installation back plate; the two-stage floating mechanism comprises a first-stage floating unit and a second-stage floating unit arranged on the first-stage floating unit, the first-stage floating unit is connected with the driving device, and the rivet nut gun is arranged on the second-stage floating unit.

Furthermore, the primary floating unit comprises a mounting plate and a primary spring which are connected with the driving device, and the secondary floating unit is arranged on the mounting plate; the driving device drives the mounting plate to compress the primary spring.

Furthermore, the secondary floating unit comprises a secondary guide device and a secondary spring which are arranged on the mounting plate, and the blind rivet nut gun is connected to the secondary guide device in a sliding manner; the secondary spring is abutted against the blind rivet nut gun, and the blind rivet nut gun can compress the secondary spring when sliding on the secondary guide device.

Furthermore, the driving device drives the mounting plate to move towards the product direction and compress the first-stage spring, and the blind rivet nut gun compresses the second-stage spring after contacting the product.

Furthermore, still be provided with one-level guider on the installation backplate, mounting panel sliding connection is on one-level guider.

Furthermore, a first guide rod is further arranged on the mounting back plate, and the primary spring is sleeved on the first guide rod; and the first guide rod is also in threaded connection with an adjusting nut used for adjusting the elasticity of the primary spring, and the adjusting nut is abutted against one end of the primary spring.

Furthermore, a second guide rod is further arranged on the mounting plate, and the secondary spring is sleeved on the second guide rod.

Furthermore, a buffer is further arranged on the mounting plate and used for positioning the blind rivet nut gun when the blind rivet nut gun slides on the secondary guide device.

Furthermore, a first sensor used for sensing the position of the mounting plate is arranged on the mounting back plate, and a second sensor used for sensing the position of a rivet nut gun is arranged on the mounting plate.

Compared with the prior art, the utility model has the advantages that:

1. through the arrangement of the driving device and the two-stage floating mechanism, the effect of improving the automatic rivet pulling efficiency and the rivet pulling quality can be achieved.

2. Through the arrangement of the mounting plate and the primary spring, the buffer effect can be achieved when the rivet nut gun is pressed down to be in contact with the surface of a product; meanwhile, when rivet pulling is finished and the rivet is withdrawn, the rivet pulling nut gun is pulled up by the elasticity of the primary spring and separated from the surface of the product.

3. Through the setting of second grade guider and second grade spring, can further play the cushioning effect, and rely on the elasticity of second grade spring to carry out the adaptability adjustment to the rivet nut rifle to make the rivet nut and paste with the product and level, thereby improve the automatic quality of riveting.

4. Through the setting of one-level guider, can play the removal to the mounting panel and lead spacing effect to make the blind rivet nut rifle insert more accurately in the product hole.

5. Through the arrangement of the first guide rod and the adjusting nut, the function of adjusting the elasticity of the first-level spring can be achieved.

6. Through set up first inductor on the installation backplate, set up the second inductor on the mounting panel, can play the effect of response mounting panel and rivet nut rifle position to carry out accurate control to automatic rivet process.

Drawings

FIG. 1 is a schematic view of an installation structure according to an embodiment of the present invention;

FIG. 2 is a first schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 3 is an exploded view of the overall structure of one embodiment of the present invention;

fig. 4 is a schematic overall structure diagram of a second embodiment of the present invention.

1. Mounting a back plate; 2. a drive device; 3. a first-stage floating unit; 31. mounting a plate; 32. a primary spring; 4. a secondary floating unit; 41. a secondary guiding device; 42. a secondary spring; 5. pulling a rivet nut gun; 6. briquetting; 7. a first guide bar; 71. adjusting the nut; 8. a primary guiding device; 9. a second guide bar; 10. a buffer; 11. a first inductor; 12. a second inductor; 13. a robot; 14. an elastic floating mechanism.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1-3, an elastic floating mechanism of an automatic blind rivet nut gun according to an embodiment of the present invention includes an installation back plate 1 for installing a blind rivet nut gun 5, and the installation back plate 1 is further provided with a two-stage floating mechanism and a driving device 2 for driving the blind rivet nut gun 5 to move. The two-stage floating mechanism comprises a first-stage floating unit 3 and a second-stage floating unit 4 arranged on the first-stage floating unit 3, wherein the first-stage floating unit 3 is connected with the driving device 2, and a rivet nut gun 5 is arranged on the second-stage floating unit 4. The elastic floating mechanism is installed on the robot 13 or the three-axis platform through the installation back plate 1, when rivet pulling is conducted, the robot 13 or the three-axis platform only needs to move the rivet nut gun 5 to the position above a product hole, and then the rivet nut gun 5 is rapidly and accurately inserted into the product hole through the driving device 2 to complete rivet pulling. Compared with the prior art, the automatic rivet pulling efficiency and quality are greatly improved.

As shown in fig. 2 and 3, in the present embodiment, the driving device 2 is configured as a driving cylinder fixed to the top end of the mounting backplate 1. The primary floating unit 3 comprises a mounting plate 31 and a primary spring 32, the mounting plate 31 is fixedly connected with a piston rod of a driving cylinder, and the driving cylinder can drive the mounting plate 31 to move downwards and compress the primary spring 32. The secondary floating unit 4 includes a secondary guide device 41 and a secondary spring 42 provided on the mounting plate 31, the blind nut runner 5 is slidably connected to the secondary guide device 41, and the secondary spring 42 abuts against the blind nut runner 5. In this embodiment, the secondary guide device 41 is a secondary slide rail, and the blind rivet nut gun 5 is fixed to a slide block of the secondary slide rail. During riveting, the driving cylinder drives the mounting plate 31 to press the first-stage spring 32 downwards, the mounting plate 31 drives the second-stage floating unit 4 (namely, the second-stage slide rail and the second-stage spring 42) on the mounting plate to move towards the product direction together with the riveting nut gun 5 until the riveting nut gun 5 contacts the surface of the product to be riveted, then the riveting nut gun 5 slides relative to the mounting plate 31 along the second-stage slide rail under the support of the surface of the product, the second-stage spring 42 is compressed, the riveting nut gun 5 is flatly attached to the product at the moment, and then the riveting action is completed. Through the setting of one-level spring 32 and second grade spring 42, can play the cushioning effect to protection product and equipment, the setting of second grade spring 42 can also further carry out the adaptability adjustment to rivet nut rifle 5 simultaneously, thereby makes rivet nut rifle 5 can paste with the product of co-altitude not to tie up, has guaranteed the quality of automatic rivet.

As shown in fig. 3, to enable the blind rivet nut gun 5 to be quickly and accurately inserted into a product hole, production efficiency is improved. In this embodiment, the mounting backboard 1 is further provided with a primary guiding device 8, the primary guiding device 8 can be a primary sliding rail, and the mounting plate 31 is fixed on a sliding block of the primary sliding rail; therefore, when the driving device 2 drives the mounting plate 31 to move, the mounting plate 31 can move along the primary slide rail, and the stability is improved. In addition, in this embodiment, a first guide rod 7 is further disposed on the mounting backplate 1 on one side of the primary slide rail, and the primary spring 32 is sleeved on the first guide rod 7; be connected with briquetting 6 on the mounting panel 31, briquetting 6 slip cover is established on first guide arm 7 and with the one end butt of one-level spring 32, sets up like this and can further improve the stability that mounting panel 31 and rivet nut rifle 5 removed. Correspondingly, a second guide rod 9 can be arranged on the mounting plate 31, and the secondary spring 42 is sleeved on the second guide rod 9, so that the moving stability of the blind rivet nut gun 5 is further improved.

As shown in fig. 4, in this embodiment, a first sensor 11 for sensing a position of the mounting plate 31 is disposed on the mounting plate 1, and a second sensor 12 for sensing a position of the blind rivet nut gun 5 is disposed on the mounting plate 31. Through setting up first inductor 11 and second inductor 12, can respond to the position of mounting panel 31 and rivet nut rifle 5 to carry out accurate control to automatic rivet process, improve the quality of automatic rivet.

The implementation principle of the embodiment is as follows: the elastic floating mechanism of the automatic rivet nut gun is fixed on a robot 13 or a three-axis platform through a mounting back plate 1. The robot 13 or the three-axis platform moves the rivet nut gun 5 to the position above a hole position to be riveted of a product, then the driving cylinder drives the mounting plate 31 to move downwards and compress the primary spring 32, the mounting plate 31 drives the secondary floating unit 4 (namely the secondary guide device 41 and the secondary spring 42) on the mounting plate to move downwards together with the rivet nut gun 5 until the rivet nut gun 5 is contacted with the product, then the rivet nut gun 5 slides relatively along the secondary slide rail and the mounting plate 31 under the support of the surface of the product and compresses the secondary spring 42, at this moment, the rivet nut gun 5 is flatly attached to the product, and then the rivet action is completed.

After the rivet pulling is completed, the piston rod of the driving cylinder retracts, the secondary spring 42 and the primary spring 32 reset, and the rivet pulling nut gun 5 is pulled up under the elastic force of the primary spring 32, so that the rivet pulling nut gun 5 is separated from the surface of a product, and the action of pulling the gun and withdrawing the rivet is completed.

This application makes rivet nut rifle 5 break away from the product through the spring force, rises or the cooperation of three-axis platform Z axle rises with traditional adoption robot 13 cooperation and compares with the mode of pulling out the rifle, and is not only fast, efficient, is difficult to harm rivet nut rifle 5's pull rod moreover to the life-span of pull rod has been prolonged.

In the present embodiment, an adjustment nut 71 for adjusting the spring force of the primary spring 32 is further screwed to the first guide bar 7, and the adjustment nut 71 abuts on one end of the primary spring 32. The initial elastic force of the primary spring 32 is adjusted by rotating the adjustment nut 71, thereby performing an adaptive adjustment according to products of different heights. The mounting plate 31 is further provided with a buffer 10, and when rivet pulling is completed and the rivet is removed, the secondary spring 42 is reset, so that the blind rivet nut gun 5 moves down along the secondary slide rail, and the buffer 10 can be abutted against the blind rivet nut gun 5 to position the blind rivet nut gun.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An elastic floating mechanism of an automatic rivet nut gun comprises an installation back plate (1) for installing a rivet nut gun (5), and is characterized in that the installation back plate (1) is further provided with a two-stage floating mechanism and a driving device (2) for driving the rivet nut gun (5) to move; the two-stage floating mechanism comprises a first-stage floating unit (3) and a second-stage floating unit (4) arranged on the first-stage floating unit (3), the first-stage floating unit (3) is connected with the driving device (2), and the rivet nut gun (5) is arranged on the second-stage floating unit (4).

2. Elastic floating mechanism of automatic riveter nut guns according to claim 1, characterized in that the primary floating unit (3) comprises a mounting plate (31) connected to the driving means (2) and a primary spring (32), the secondary floating unit (4) being arranged on the mounting plate (31); the driving device (2) drives the mounting plate (31) to compress the primary spring (32).

3. The elastic floating mechanism of an automatic riveter nut-gun according to claim 2, characterized in that the secondary floating unit (4) comprises a secondary guide (41) and a secondary spring (42) provided on a mounting plate (31), the riveter nut-gun (5) being slidably connected to the secondary guide (41); the secondary spring (42) abuts against a blind rivet nut runner (5), and the blind rivet nut runner (5) can compress the secondary spring (42) when sliding on the secondary guide device (41).

4. The elastic floating mechanism of an automatic riveter nut-gun according to claim 3 characterized in that the drive means (2) drives the mounting plate (31) to move towards the product and compress the primary spring (32), and the riveter nut-gun (5) compresses the secondary spring (42) after the riveter nut-gun (5) contacts the product.

5. An elastic floating mechanism of an automatic blind nut riveter according to claim 3, characterized in that the mounting backplate (1) is further provided with primary guiding means (8), and the mounting plate (31) is slidably connected to the primary guiding means (8).

6. The elastic floating mechanism of the automatic riveter nut gun according to claim 3, characterized in that the mounting backboard (1) is further provided with a first guide rod (7), and the primary spring (32) is sleeved on the first guide rod (7); and the first guide rod (7) is also in threaded connection with an adjusting nut (71) for adjusting the elasticity of the primary spring (32), and the adjusting nut (71) is abutted against one end of the primary spring (32).

7. The elastic floating mechanism of the automatic riveter nut gun according to claim 6, characterized in that the mounting plate (31) is further provided with a second guide rod (9), and the secondary spring (42) is sleeved on the second guide rod (9).

8. An elastic floating mechanism for an automatic blind nut runner according to claim 7, characterized in that a bumper (10) is also provided on the mounting plate (31), said bumper (10) being adapted to position the blind nut runner (5) when sliding on the secondary guide means (41).

9. An elastic floating mechanism of an automatic blind nut riveter according to claim 3, characterised in that the mounting backplate (1) is provided with a first sensor (11) for sensing the position of the mounting plate (31), and the mounting plate (31) is provided with a second sensor (12) for sensing the position of the blind nut riveter (5).