A servo nut riveter

Abstract

The utility model relates to riveting device field, especially in a kind of servo nut riveter, including shell, be located in the end of shell and be used for being connected with the nut to be pulled riveting connection mechanism and be located in the shell and be connected in the connection mechanism and be used for driving the riveting mechanism before and after movement, the shell is oppositely connected with the stable structure of connection mechanism;Stable structure is equipped with anti-rotation guide groove along the direction of movement of connection mechanism, the end of connection mechanism is equipped with the anti-rotation shaft in stable structure, the anti-rotation shaft is oppositely equipped with anti-rotation guide wheel of anti-rotation guide groove.The utility model aims at improving the stability of riveter work, and improves pull riveting accuracy.

Description

Technical Field

[0001] This utility model relates to the field of riveting devices, and in particular to a servo nut riveting gun. Background Technology

[0002] A servo nut rivet gun is an assembly tool used for automated rivet connection of nuts. It is widely used in the manufacturing fields of automobiles, aerospace, and electronics. In the processing and fastening of industrial workpieces such as various metal sheets or pipes, a servo rivet gun is needed to fasten the rivet nut to the part to be riveted without tapping the internal threads.

[0003] Traditional nut guns are mostly pneumatically or electrically driven, which suffers from problems such as low torque control accuracy, high noise, and high energy consumption. Although servo motors are used in some high-precision applications, existing structures are often complex and bulky, and lack effective balancing of reaction forces, resulting in insufficient operational stability. Long-term use can easily affect tightening accuracy and equipment lifespan. Utility Model Content

[0004] The main purpose of this invention is to provide a servo nut riveting gun, which aims to improve the stability of the riveting gun and increase the riveting accuracy.

[0005] To achieve the above objectives, this utility model proposes a servo nut riveting gun, comprising a housing, a connecting mechanism located at the end of the housing for connecting with the nut to be riveted, and a riveting mechanism located inside the housing and connected to the connecting mechanism for driving the connecting mechanism to move back and forth. The housing has a stabilizing structure relative to the connecting mechanism.

[0006] The stabilizing structure has an anti-rotation guide groove along the moving direction of the connecting mechanism, and the end of the connecting mechanism has an anti-rotation shaft passing through the stabilizing structure. The anti-rotation shaft has an anti-rotation guide wheel opposite to the anti-rotation guide groove.

[0007] In one embodiment of this application, the riveting mechanism includes a riveting motor and a reduction transmission mechanism connected to the riveting motor. One end of the reduction transmission mechanism is provided with a first transmission gear connected to the riveting motor, and the other end is provided with a second transmission gear connected to the riveting mechanism. The radius of the second transmission gear is larger than the radius of the first transmission gear.

[0008] A transmission assembly is provided between the first transmission gear and the second transmission gear.

[0009] In one embodiment of this application, the connecting mechanism is provided with a lead screw facing the riveting mechanism, and a drive nut rotatably connected to the housing is connected to the outer periphery of the lead screw. The inner wall of the drive nut is provided with a drive thread connected to the lead screw, and the drive nut is connected to the riveting mechanism.

[0010] The anti-rotation shaft is connected to the end of the lead screw.

[0011] In one embodiment of this application, the connecting mechanism further includes a connecting structure connected to a drive motor. The connecting structure is connected to a lead screw and has a connecting screw at one end relative to the housing and away from the anti-rotation shaft. The connecting screw extends out of the housing.

[0012] In one embodiment of this application, the connecting screw has a hexagonal shaft facing the lead screw, and the lead screw has a mating cavity coaxially with the hexagonal shaft, and the hexagonal shaft is connected to the mating cavity;

[0013] The drive motor is located at the end of the housing away from the connecting screw and has a drive cavity facing the hexagonal shaft. The end of the hexagonal shaft away from the connecting screw is connected to the drive cavity.

[0014] In one embodiment of this application, a connector is connected to the end of the connecting screw facing the drive motor, the hexagonal shaft is connected to the connector, a limiting member is provided at the end of the lead screw facing the connecting screw and wrapped around the connector, and a limiting portion protrudes from the outer periphery of the connector relative to the limiting member.

[0015] By adopting the above technical solution, this utility model has the following advantages:

[0016] This application can be structurally and functionally divided into a shell, a main body located inside the shell but with structures extending through the shell, a connecting mechanism for stably connecting and fixing the nut to be riveted, and a riveting mechanism located entirely inside the shell and driven by the outer periphery of the connecting mechanism for driving the connecting mechanism to move stably back and forth, ensuring the stability of the riveting process. The shell also has a stabilizing structure relative to the connecting mechanism. The main function of the stabilizing structure is to limit the movement track of the connecting mechanism, so that the connecting mechanism can move stably back and forth, preventing the connecting mechanism itself from rotating in addition to moving back and forth when the riveting mechanism drives the connecting mechanism, thus ensuring the stability and accuracy of riveting.

[0017] To improve the stability of the rivet gun operation, the stabilizing structure is equipped with anti-rotation guide grooves only on the forward and backward movement path of the connecting structure. The end of the connecting mechanism is connected to an anti-rotation shaft, which passes through the stabilizing structure and is equipped with an anti-rotation guide wheel relative to the anti-rotation guide groove. There are multiple anti-rotation guide grooves and anti-rotation guide wheels. The two work together to ensure that the kinetic energy transmitted from the riveting mechanism to the connecting mechanism is converted into kinetic energy to drive the connecting mechanism to move forward and backward, thus preventing the connecting mechanism itself from rotating. This structure can effectively ensure the riveting operation accuracy of the rivet gun. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the servo nut riveting gun of this utility model;

[0020] Figure 2 This is a cross-sectional view of the servo nut riveting gun of this utility model;

[0021] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 This is an exploded view of the servo nut riveting gun of this utility model.

[0023] Explanation of icon numbers:

[0024] 1. Housing; 2. Stable structure; 21. Anti-rotation guide groove; 3. Connecting mechanism; 31. Drive nut; 32. Lead screw; 33. Anti-rotation shaft; 4. Connecting structure; 41. Drive motor; 5. Connecting screw; 51. Connecting part; 52. Limiting part; 53. Hexagonal shaft; 54. Limiting part; 6. Riveting mechanism; 61. Riveting motor; 62. Reduction transmission mechanism; 63. First transmission gear; 64. Second transmission gear.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] Reference Figures 1 to 4 To achieve the above objectives, this utility model proposes a servo nut riveting gun, including a housing 1, a connecting mechanism 3 located at the end of the housing 1 for connecting with the nut to be riveted, and a riveting mechanism 6 located inside the housing 1 and connected to the connecting mechanism 3 for driving the connecting mechanism 3 to move back and forth. The housing 1 is provided with a stabilizing structure 2 relative to the connecting mechanism 3.

[0028] An anti-rotation guide groove 21 is provided inside the stabilizing structure 2 along the moving direction of the connecting mechanism 3. An anti-rotation shaft 33 is provided at the end of the connecting mechanism 3 and passes through the stabilizing structure 2. An anti-rotation guide wheel is provided on the anti-rotation guide groove 21 relative to the anti-rotation guide groove 21.

[0029] This application can be structurally and functionally divided into a housing 1, a connecting mechanism 3 which is mainly located inside the housing 1 but has a structure extending out of the housing 1 for stably connecting and fixing the nut to be riveted, and a riveting mechanism 6 which is entirely located inside the housing 1 and driven to be connected to the outer periphery of the connecting mechanism 3 for driving the connecting mechanism 3 to move back and forth stably, thus ensuring the stability of the riveting process. The housing 1 also has a stabilizing structure 2 relative to the connecting mechanism 3. The main function of the stabilizing structure 2 is to limit the movement track of the connecting mechanism 3, so that the connecting mechanism 3 can move back and forth stably, and to prevent the connecting mechanism 3 from rotating in addition to moving back and forth when the riveting mechanism drives the connecting mechanism 3, thus ensuring the stability and accuracy of riveting.

[0030] To improve the stability of the rivet gun operation, the stabilizing structure 2 is provided with anti-rotation guide grooves 21 only on the forward and backward movement path of the connecting structure 4. The end of the connecting mechanism 3 is connected to an anti-rotation shaft 33, which passes through the stabilizing structure 2 and is provided with anti-rotation guide wheels relative to the anti-rotation guide grooves 21. There are multiple anti-rotation guide grooves 21 and anti-rotation guide wheels. The two cooperate with each other to ensure that the kinetic energy transmitted by the riveting mechanism 6 to the connecting mechanism 3 is converted into kinetic energy to drive the connecting mechanism 3 to move forward and backward, thus avoiding the rotation of the connecting mechanism 3 itself. This structure can effectively ensure the riveting operation accuracy of the rivet gun.

[0031] See also Figures 2 to 4 In one embodiment of this application, the riveting mechanism 6 includes a riveting motor 61 and a reduction transmission mechanism 62 connected to the riveting motor 61. One end of the reduction transmission mechanism 62 is provided with a first transmission gear 63 connected to the riveting motor 61, and the other end is provided with a second transmission gear 64 connected to the connecting mechanism 3. The radius of the second transmission gear 64 is larger than the radius of the first transmission gear 63.

[0032] A transmission assembly is provided between the first transmission gear 63 and the second transmission gear 64.

[0033] The riveting motor 61 provides power for the forward and backward movement of the connecting mechanism 3. The reduction transmission mechanism 62, through a transmission component including the first transmission gear 63 and the second transmission gear 64, reduces the power of the riveting motor 61 step by step to ensure the stability of the movement of the connecting structure 4. Furthermore, the gears in the reduction transmission mechanism 62 can gradually store energy to ensure the stability of the force acting on the connecting mechanism 3, so that the riveting gun can achieve the riveting effect more stably.

[0034] See also Figures 2 to 3In one embodiment of this application, the connecting mechanism 3 is provided with a lead screw 32 facing the riveting mechanism 6. The outer periphery of the lead screw 32 is connected to a drive nut 31 that is rotatably connected to the housing 1. The inner wall of the drive nut 31 is provided with a drive thread connected to the lead screw 32. The drive nut 31 is connected to the riveting mechanism 6.

[0035] The anti-rotation shaft 33 is connected to the end of the lead screw 32.

[0036] The connecting mechanism 3 converts the power of the riveting mechanism 6 into the power for the connecting mechanism 3 to move back and forth through the lead screw 32 and the drive nut 31. The housing 1 is provided with a sliding sleeve relative to the drive nut 31. The drive nut 31 is connected to the second transmission gear 64. At the same time, the drive nut 31 can drive the lead screw 32 to move through the drive thread. As the drive nut 31 rotates, and the end of the lead screw 32 is connected to the anti-rotation shaft 33, the lead screw 32 can be prevented from rotating, so that the lead screw 32 can only move back and forth. Through the above structure, the lead screw 32 can stably drive the connecting mechanism 3 to move back and forth, ensuring the accuracy of the riveting process.

[0037] See also Figure 2 In one embodiment of this application, the connecting mechanism 3 further includes a connecting structure 4 connected to a drive motor 41. The connecting structure 4 is connected to the lead screw 32 and has a connecting screw 5 at one end relative to the housing 1 away from the anti-rotation shaft 33. The connecting screw 5 passes through the housing 1.

[0038] The connecting mechanism 3 includes a connecting structure 4 that connects to the drive motor 41. Under the action of the drive motor 41, the connecting structure 4 can connect to the nut to be riveted by thread. The connecting structure 4 is connected to a lead screw 32, and a connecting screw 5 for connecting the nut is provided on the outside of the housing 1. This can ensure that the nut can be quickly installed on the rivet gun and the rivet gun and nut can be quickly separated after riveting is completed.

[0039] See also Figures 2 to 3 In one embodiment of this application, the connecting screw 5 is provided with a hexagonal shaft 53 facing the lead screw 32, and the lead screw 32 is coaxially provided with a mating cavity relative to the hexagonal shaft 53, and the hexagonal shaft 53 is connected to the mating cavity;

[0040] The drive motor 41 is located at the end of the housing 1 away from the connecting screw 5 and has a drive cavity facing the hexagonal shaft 53. The end of the hexagonal shaft 53 away from the connecting screw 5 is connected to the drive cavity.

[0041] The lead screw 32 has a mating cavity, which is a cylindrical groove. The connecting screw 5 has a hexagonal shaft 53 that passes through the mating cavity and faces the lead screw 32. The hexagonal shaft 53 is connected to the drive motor 41. Under the action of the drive motor 41, the hexagonal shaft 53 can move freely. Through the above structure, the riveting mechanism 6 can drive the connecting screw 5 to move back and forth, and the drive motor 41 can drive the connecting screw 5 to rotate through the hexagonal shaft 53. This structure makes the riveting gun simple and ensures the stability of the operation.

[0042] See also Figure 3 In one embodiment of this application, a connector 51 is connected to one end of the connecting screw 5 facing the drive motor 41, a hexagonal shaft 53 is connected to the connector 51, and a limiting member 54 is provided at one end of the lead screw 32 facing the connecting screw 5, which is wrapped around the connector 51. A limiting part 52 protrudes from the outer periphery of the connector 51 relative to the limiting member 54.

[0043] The drive motor 41 is fixedly connected, and the end of the lead screw 32 is connected to the connector 51. The two are only connected and are in a sliding connection. The hexagonal shaft 53 passes through and is fixed to the connector 51. The connector 51 itself is connected to the connecting screw 5. In order to transmit the power of the riveting motor 61 to the connecting screw 5, the end of the lead screw 32 is provided with a limiting member 54, and the outer periphery of the connector 51 is provided with a limiting part 52.

[0044] When the lead screw 32 drives the connecting screw 5 forward, the lead screw 32 can directly push the connecting piece 51, and the connecting piece 51 drives the connecting screw 5 forward.

[0045] When the lead screw 32 retracts, it drives the limiting member 54 to retract. The limiting member 54 itself drives the limiting part 52, which in turn drives the connecting screw 5 to retract. At the same time, the limiting part 52 can prevent the connecting screw 5 and the lead screw 32 from separating. The above structure can ensure the stability of the rivet gun structure and the stability of its operation, and can effectively ensure the riveting accuracy.

[0046] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A servo nut riveting gun, characterized in that, The device includes a housing, a connecting mechanism located at the end of the housing for connecting with a nut to be riveted, and a riveting mechanism located inside the housing and connected to the connecting mechanism for driving the connecting mechanism to move back and forth. The housing has a stable structure relative to the connecting mechanism. The stabilizing structure has an anti-rotation guide groove along the moving direction of the connecting mechanism, and the end of the connecting mechanism has an anti-rotation shaft passing through the stabilizing structure. The anti-rotation shaft has an anti-rotation guide wheel opposite to the anti-rotation guide groove.

2. The servo nut riveting gun according to claim 1, characterized in that, The riveting mechanism includes a riveting motor and a reduction transmission mechanism connected to the riveting motor. One end of the reduction transmission mechanism is provided with a first transmission gear connected to the riveting motor, and the other end is provided with a second transmission gear connected to the riveting mechanism. The radius of the second transmission gear is larger than the radius of the first transmission gear. A transmission assembly is provided between the first transmission gear and the second transmission gear.

3. A servo nut riveting gun according to claim 1, characterized in that, The connecting mechanism is provided with a lead screw facing the riveting mechanism. The outer periphery of the lead screw is connected to a drive nut that is rotatably connected to the housing. The inner wall of the drive nut is provided with a drive thread that is connected to the lead screw. The drive nut is connected to the riveting mechanism. The anti-rotation shaft is connected to the end of the lead screw.

4. A servo nut riveting gun according to claim 3, characterized in that, The connecting mechanism also includes a connecting structure connected to a drive motor. The connecting structure is connected to a lead screw and has a connecting screw at the end opposite the housing and away from the anti-rotation shaft. The connecting screw passes through the housing.

5. A servo nut riveting gun according to claim 4, characterized in that, The connecting screw has a hexagonal shaft facing the lead screw, and the lead screw has a mating cavity coaxially with the hexagonal shaft, and the hexagonal shaft is connected to the mating cavity; The drive motor is located at the end of the housing away from the connecting screw and has a drive cavity facing the hexagonal shaft. The end of the hexagonal shaft away from the connecting screw is connected to the drive cavity.

6. A servo nut riveting gun according to claim 5, characterized in that, The connecting screw is connected to a connector at one end facing the drive motor. The hexagonal shaft is connected to the connector. The lead screw is provided with a limiting member that wraps around the connector at one end facing the connecting screw. The outer periphery of the connector is provided with a limiting part that protrudes from the limiting member.

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