A robotic rotary seal assembly

Abstract

The utility model discloses a kind of robot rotary seal assemblies, to solve the problems such as poor sealing effect of existing rotary seal assembly, inconvenient installation and disassembly and insufficient adaptability, the component mainly includes rotating shaft seal main body, it is equipped with installation cylinder and both sides end cover, end cover inside has static ring, dynamic ring is set between static ring, dynamic ring inside is equipped with silica gel ring and compression ring, outside is rotatedly connected with static ring by positioning member, in addition, by various connecting structures, such as buckle and placing groove clamping, outer disc and end groove, embedded disc and inner groove corresponding cooperation etc. The component is also provided with reinforcing rib to enhance structural strength, and the buffer cavity realizes the buffering function. The rotary seal assembly has reasonable structure design, convenient installation, significantly improved sealing performance, can effectively guarantee the stable operation of the robot rotating parts, reduce maintenance cost, and has high practicality and innovation.

Description

Technical Field

[0001] This utility model belongs to the technical field of robot parts, specifically relating to a robot rotary sealing assembly. Background Technology

[0002] Robot rotary sealing assemblies are sealing devices installed on moving parts such as robot joints and rotating axes. Through elastic seals, mechanical seal structures, or combined sealing assemblies, a dynamic sealing interface is formed between the rotating parts and the fixed housing, which can effectively prevent lubricating oil leakage, hydraulic oil loss, or intrusion of external contaminants.

[0003] However, existing rotary sealing components for robots have poor sealing performance, which can easily lead to leakage, affecting the normal operation and service life of the robot. At the same time, the sealing component structure is inconvenient to install and disassemble, increasing maintenance costs and time. Utility Model Content

[0004] The purpose of this utility model is to provide a robot rotary sealing assembly to solve the problems mentioned in the background art, such as poor sealing effect of existing robot rotary sealing assemblies, which easily lead to leakage, affecting the normal operation and service life of the robot, and the inconvenience of installation and disassembly of the sealing assembly structure, which increases maintenance costs and time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a robot rotary sealing assembly, comprising a rotary shaft seal body;

[0006] An installation cylinder is provided at the middle position of the rotary shaft seal body, and end caps are provided on the left and right sides of the installation cylinder respectively;

[0007] A stationary ring is provided on the inner side of the end cap, and two moving rings are provided on the left and right sides in the middle of the stationary rings on both sides. A silicone ring is provided on the inner side of the moving ring, and a clamping ring is provided on the outer side of the silicone ring.

[0008] Preferably, an L-shaped sealing ring is provided at the inner side of the stationary ring, a support ring is provided at the rear side of the L-shaped sealing ring, reinforcing ribs are provided at the inner positions of the stationary ring and the support ring, a positioning groove is provided at the inner side of the stationary ring, and a positioning element is provided at the outer side of the moving ring, the positioning element being rotatably connected to the positioning groove.

[0009] Preferably, a buckle is provided at the outer position of the clamping ring, and a placement groove is provided at the inner position of the groove, and the moving ring and the silicone ring are engaged with the buckle through the placement groove.

[0010] Preferably, the mounting cylinder has end grooves on its left and right sides, an inner groove on the rear side of the end grooves, an outer plate on the outer side of the end cover, and an insert plate on the inner side of the outer plate. The end grooves correspond to the outer plate, and the insert plate corresponds to the inner grooves.

[0011] Preferably, a retaining ring is provided at the rear side of the inner groove, the retaining ring corresponds to the stationary ring, and the retaining ring and the mounting cylinder are an integrated structure.

[0012] Preferably, a groove is provided on the inner side of the moving ring, and a clamping ring is provided inside the groove.

[0013] Preferably, a male end of the clamping ring is provided at the left side of the clamping ring, a female end of the clamping ring is provided at the right side of the male end of the clamping ring, a buffer cavity is provided inside the female end of the clamping ring, and a plug-in ring is provided inside the male end of the clamping ring. The plug-in ring is plugged into the buffer cavity, and the buffer cavity is filled with compressed gas.

[0014] Preferably, the end slot has mounting cylinder bolt holes inside, the end cap has stationary ring fixing bolt holes arranged in an array inside, the stationary ring fixing bolt holes have end cap fixing bolt holes arranged in an array outside, and the stationary ring has stationary ring mounting holes arranged in an array outside. The end cap is fixedly connected to the mounting cylinder through the mounting cylinder bolt holes, the end cap fixing bolt holes, and the internal end cap fixing bolts. The stationary ring is fixedly connected to the end cap through the stationary ring fixing bolt holes, the stationary ring mounting holes, and the internal stationary ring fixing bolts.

[0015] Compared with the prior art, the present invention provides a robot rotary sealing assembly, which has the following advantages:

[0016] By incorporating an L-shaped sealing ring, support ring, reinforcing ribs, positioning groove, positioning element, clamping ring, snap fastener, placement groove, end groove, inner groove, outer disc, insert, and retaining ring, the L-shaped sealing ring inside the stationary ring further enhances the sealing effect, blocks fluid leakage paths, and improves the sealing performance of the entire sealing assembly. The support ring located behind the L-shaped sealing ring provides support, preventing deformation during operation due to pressure or impact, ensuring sealing stability. The reinforcing ribs inside the stationary and support rings significantly improve their structural strength, enabling them to withstand greater pressure and external forces, extending their service life. The positioning groove inside the stationary ring rotates with the positioning element on the outside of the rotating ring, ensuring accurate relative positioning between the rotating and stationary rings, stabilizing the sealing structure, and allowing the rotating ring to move freely relative to the stationary ring. The rotation meets the working requirements of the robot's rotating parts, while also helping to reduce wear and improve the reliability of the sealing assembly. The buckle on the outside of the clamping ring engages with the placement groove on the inside of the moving ring groove, achieving a quick and stable connection between the moving ring and the silicone ring. This snap-fit ​​method facilitates installation and disassembly, making it easy to operate during maintenance or component replacement, improving work efficiency and reducing maintenance costs. The end groove on the mounting cylinder corresponds to the outer plate on the outside of the end cover, and the inner groove corresponds to the insert plate. This structural design makes the installation of the end cover and the mounting cylinder more accurate and stable, enabling quick positioning and installation, and ensuring the accuracy and stability of the overall structure of the sealing assembly. The retaining ring integrated with the mounting cylinder on the rear side of the inner groove corresponds to the stationary ring, playing a role in positioning and fixing the stationary ring, further enhancing the stability of the stationary ring in the sealing assembly and helping to improve the sealing effect.

[0017] Through the design of the groove, clamping ring, male clamping ring end, female clamping ring end, buffer cavity, and plug-in ring, the groove on the inner side of the moving ring provides an installation position for the clamping ring, allowing it to be securely installed on the moving ring. The tight fit between the two helps maintain the integrity of the sealing structure and prevents the sealing effect from being affected by component shaking or displacement during the operation of the robot's rotating parts. The clamping ring adopts a design with a male clamping ring end and a female clamping ring end. This structure facilitates the installation and disassembly of the clamping ring, allowing for quick and accurate alignment during installation and easy separation during maintenance or replacement, improving operational convenience and reducing maintenance costs. The plug-in ring on the inner side of the male clamping ring... The clamping ring has an internal buffer cavity that is filled with compressed gas. This design gives the clamping ring excellent buffering and shock absorption performance. During the robot's rotation, the sealing assembly is subjected to various vibrations and impacts. The compressed gas in the buffer cavity can effectively absorb and buffer these external forces, reduce damage to the sealing components, and extend the service life of the sealing assembly. The presence of compressed gas allows the clamping ring to make a certain degree of adaptive adjustment according to the actual working conditions. When the sealing components are subjected to different levels of pressure, the compressed gas can adjust the clamping force of the clamping ring through its own compression and expansion, ensuring the stability of the sealing effect and improving the adaptability of the sealing assembly to complex working environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the mounting cylinder in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the end cap of this utility model.

[0021] Figure 4 This is a schematic diagram of the stationary ring in this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the moving ring in this utility model.

[0023] Figure 6 This is a schematic diagram of the compression ring in this utility model.

[0024] Figure 7 This is a schematic diagram of the silicone ring in this utility model.

[0025] In the diagram: 1. Rotary shaft seal body; 2. End cap; 3. Mounting cylinder; 4. Rotary ring; 5. Stationary ring; 6. Clamping ring; 7. Silicone ring; 8. Compression ring; 9. Stationary ring fixing bolt; 10. End cap fixing bolt; 11. End groove; 12. Inner groove; 13. Snap ring; 14. Mounting cylinder bolt hole; 15. End cap fixing bolt hole; 16. Stationary ring fixing bolt hole; 17. Outer disc; 18. Embedded disc; 19. Stationary ring mounting hole; 20. L-shaped sealing ring; 21. Support ring; 22. Positioning groove; 23. Reinforcing rib; 24. Embedded groove; 25. Positioning component; 26. Placement groove; 27. Compression ring male end; 28. Compression ring female end; 29. ​​Insertion ring; 30. Buffer cavity; 31. Snap fastener. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-7 The robot rotary seal assembly shown includes a rotary shaft seal body 1;

[0028] An installation cylinder 3 is provided in the middle of the rotary shaft seal body 1, and end caps 2 are provided on the left and right sides of the installation cylinder 3 respectively;

[0029] A stationary ring 5 is provided on the inner side of the end cap 2, and two moving rings 4 are provided in the middle of the two stationary rings 5. A silicone ring 7 is provided on the inner side of the moving ring 4, and a clamping ring 6 is provided on the outer side of the silicone ring 7.

[0030] An L-shaped sealing ring 20 is provided on the inner side of the stationary ring 5, a support ring 21 is provided on the rear side of the L-shaped sealing ring 20, a reinforcing rib 23 is provided on the inner side of the stationary ring 5 and the support ring 21, a positioning groove 22 is provided on the inner side of the stationary ring 5, and a positioning element 25 is provided on the outer side of the moving ring 4. The positioning element 25 is rotatably connected to the positioning groove 22.

[0031] A buckle 31 is provided on the outer side of the clamping ring 6, and a placement groove 26 is provided on the inner side of the groove 24. The moving ring 4 and the silicone ring 7 are engaged with the buckle 31 through the placement groove 26.

[0032] The mounting cylinder 3 has end grooves 11 on both sides, an inner groove 12 on the rear side of the end grooves 11, an outer plate 17 on the outer side of the end cover 2, and an insert plate 18 on the inner side of the outer plate 17. The end grooves 11 correspond to the outer plate 17, and the insert plate 18 corresponds to the inner groove 12.

[0033] A retaining ring 13 is provided at the rear side of the inner groove 12. The retaining ring 13 corresponds to the stationary ring 5, and the retaining ring 13 and the mounting cylinder 3 are an integrated structure.

[0034] A groove 24 is provided on the inner side of the moving ring 4, and a clamping ring 8 is provided inside the groove 24.

[0035] A male end 27 is provided on the left side of the clamping ring 8, and a female end 28 is provided on the right side of the male end 27. A buffer cavity 30 is provided inside the female end 28, and a plug-in ring 29 is provided inside the male end 27. The plug-in ring 29 is plugged into the buffer cavity 30, and the buffer cavity 30 is filled with compressed gas.

[0036] An mounting cylinder bolt hole 14 is provided inside the end slot 11. A stationary ring fixing bolt hole 16 is arranged in an array inside the end cover 2. An end cover fixing bolt hole 15 is arranged in an array outside the stationary ring fixing bolt hole 16. A stationary ring mounting hole 19 is arranged in an array outside the stationary ring 5. The end cover 2 is fixedly connected to the mounting cylinder 3 through the mounting cylinder bolt hole 14, the end cover fixing bolt hole 15 and the internal end cover fixing bolt 10. The stationary ring 5 is fixedly connected to the end cover 2 through the stationary ring fixing bolt hole 16, the stationary ring mounting hole 19 and the internal stationary ring fixing bolt 9.

[0037] In this embodiment, the specific implementation steps of a robot rotary sealing assembly are as follows: The stationary ring 5 is installed through the stationary ring mounting hole 19 and the internal stationary ring fixing bolt 9, corresponding to the stationary ring fixing bolt hole 16 on the end cover 2, thus fixing the stationary ring 5 inside the end cover 2. The silicone ring 7 is engaged with the placement groove 26 inside the groove 24 of the moving ring 4 via the buckle 31 on the outside of the clamping ring 6, completing the assembly of the moving ring 4 and the silicone ring 7. The assembled moving ring 4 and silicone ring 7 are then installed in the middle position between the two stationary rings 5, so that the positioning member 25 on the outside of the moving ring 4 is rotatably connected to the positioning groove 22 on the inside of the stationary ring 5, ensuring that the moving ring 4 can rotate flexibly relative to the stationary ring 5. The outer plate 17 on the outside of the end cover 2 is aligned with the end grooves 11 on the left and right sides of the mounting cylinder 3, and the insert plate 18 is aligned with the inner groove 12. Then, the end cap 2 is fixedly connected to the mounting cylinder 3 through the mounting cylinder bolt hole 14, the end cap fixing bolt hole 15, and the end cap fixing bolt 10. At this time, the retaining ring 13 on the rear side of the inner groove 12 corresponds to the stationary ring 5 and plays a positioning role. The clamping ring 8 is installed into the groove 24 inside the rotating ring 4. The clamping ring male end 27 on the left side of the clamping ring 8 and the clamping ring female end 28 on the right side are connected to the buffer chamber 30 through the plug-in ring 29. The compressed gas filled in the buffer chamber 30 can play a buffering role. Check whether the connection of each component is firm and whether the sealing structure is installed in place. Start the robot rotating component and observe the operation of the sealing assembly to ensure that the rotating ring 4 can rotate normally, the sealing effect is good, and there is no leakage. If there is any abnormality, stop the machine in time for inspection and adjustment.

[0038] like Figure 1 and Figure 4-5 As shown, an L-shaped sealing ring 20 is provided on the inner side of the stationary ring 5, and a support ring 21 is provided on the rear side of the L-shaped sealing ring 20. Reinforcing ribs 23 are provided inside the stationary ring 5 and the support ring 21. A positioning groove 22 is provided on the inner side of the stationary ring 5. A positioning element 25 is provided on the outer side of the moving ring 4, and the positioning element 25 is rotatably connected to the positioning groove 22. A buckle 31 is provided on the outer side of the clamping ring 6. A placement groove 26 is provided on the inner side of the recess 24. The moving ring 4 and the silicone... Ring 7 is engaged with buckle 31 through placement groove 26. End grooves 11 are provided on the left and right sides of mounting cylinder 3. Inner groove 12 is provided on the rear side of end groove 11. Outer plate 17 is provided on the outer side of end cover 2. Embedded plate 18 is provided on the inner side of outer plate 17. End groove 11 corresponds to outer plate 17. Embedded plate 18 corresponds to inner groove 12. Retaining ring 13 is provided on the rear side of inner groove 12. Retaining ring 13 corresponds to stationary ring 5. Retaining ring 13 and mounting cylinder 3 are integrated structures.

[0039] Preferably, the L-shaped sealing ring 20 inside the stationary ring 5 further enhances the sealing effect, blocks fluid leakage paths, and improves the sealing performance of the entire sealing assembly. The support ring 21 located behind the L-shaped sealing ring 20 provides support for the L-shaped sealing ring 20, preventing it from deforming due to pressure, impact, etc. during operation, and ensuring the stability of the seal. The reinforcing ribs 23 inside the stationary ring 5 and the support ring 21 greatly improve the structural strength of the stationary ring 5 and the support ring 21, enabling them to withstand greater pressure and external forces and extending their service life. The positioning groove 22 inside the stationary ring 5 is rotatably connected to the positioning element 25 outside the rotating ring 4, which not only ensures the accurate relative position between the rotating ring 4 and the stationary ring 5 and makes the sealing structure stable, but also allows the rotating ring 4 to rotate flexibly relative to the stationary ring 5, meeting the working requirements of the robot's rotating parts, while also helping to reduce wear and improve performance. The reliability of the sealing assembly is ensured by the snap-fit ​​31 on the outer side of the clamping ring 6 engaging with the placement groove 26 on the inner side of the groove 24 of the moving ring 4, achieving a quick and stable connection between the moving ring 4 and the silicone ring 7. This snap-fit ​​method facilitates installation and disassembly, making it easy to operate during maintenance or component replacement, improving work efficiency and reducing maintenance costs. The end groove 11 corresponds to the outer plate 17 on the outer side of the end cover 2, and the inner groove 12 corresponds to the inner plate 18. This structural design makes the installation of the end cover 2 and the mounting cylinder 3 more accurate and stable, enabling quick positioning and installation, and ensuring the accuracy and stability of the overall structure of the sealing assembly. The snap-fit ​​ring 13 integrated with the mounting cylinder 3 on the rear side of the inner groove 12 corresponds to the stationary ring 5, playing a role in positioning and fixing the stationary ring 5, further enhancing the stability of the stationary ring 5 in the sealing assembly, and helping to improve the sealing effect.

[0040] like Figure 1 and Figure 5-6 As shown, a groove 24 is provided on the inner side of the moving ring 4, a clamping ring 8 is provided inside the groove 24, a clamping ring male end 27 is provided on the left side of the clamping ring 8, a clamping ring female end 28 is provided on the right side of the clamping ring male end 27, a buffer cavity 30 is provided inside the clamping ring female end 28, and a plug-in ring 29 is provided on the inner side of the clamping ring male end 27. The plug-in ring 29 is plugged into the buffer cavity 30, and the buffer cavity 30 is filled with compressed gas.

[0041] Preferably, the groove 24 provided on the inner side of the rotating ring 4 provides an installation position for the clamping ring 8, allowing the clamping ring 8 to be securely installed on the rotating ring 4. The two fit tightly together, which helps maintain the integrity of the sealing structure and prevents the sealing effect from being affected by the shaking or displacement of the rotating parts during the operation of the robot. The clamping ring 8 adopts a design with a male end 27 and a female end 28. This structure facilitates the installation and disassembly of the clamping ring 8. It can be quickly and accurately connected during installation and can be easily separated during maintenance or replacement of the clamping ring 8, improving the convenience of operation and reducing maintenance costs. The insertion ring 29 on the inner side of the male end 27 of the clamping ring and the buffer inside the female end 28 of the clamping ring... The cavity 30 is plugged in and filled with compressed gas. This design gives the clamping ring 8 good cushioning and shock absorption performance. During the robot's rotation, the sealing component will be subjected to various vibrations and impacts. The compressed gas in the buffer cavity 30 can effectively absorb and buffer these external forces, reduce damage to the sealing components, and extend the service life of the sealing component. The presence of compressed gas allows the clamping ring 8 to make a certain degree of adaptive adjustment according to the actual working conditions. When the sealing component is subjected to different levels of pressure, the compressed gas can adjust the clamping force of the clamping ring 8 through its own compression and expansion, ensuring the stability of the sealing effect and improving the adaptability of the sealing component to complex working environments.

[0042] like Figure 1-7 As shown, mounting cylinder bolt holes 14 are provided inside the end groove 11, stationary ring fixing bolt holes 16 are arranged in an array inside the end cover 2, end cover fixing bolt holes 15 are arranged in an array outside the stationary ring fixing bolt holes 16, and stationary ring mounting holes 19 are arranged in an array outside the stationary ring 5. The end cover 2 is fixedly connected to the mounting cylinder 3 through the mounting cylinder bolt holes 14, the end cover fixing bolt holes 15 and the internal end cover fixing bolts 10, and the stationary ring 5 is fixedly connected to the end cover 2 through the stationary ring fixing bolt holes 16, the stationary ring mounting holes 19 and the internal stationary ring fixing bolts 9.

[0043] Optionally, the mounting bolt hole 14 on the mounting cylinder 3 and the end cover fixing bolt hole 15 on the end cover 2 are fixedly connected by the internal end cover fixing bolt 10. This connection method can firmly install the end cover 2 on the mounting cylinder 3, ensuring the stability of the entire sealing assembly structure. The stationary ring fixing bolt hole 16 on the end cover 2 and the stationary ring mounting hole 19 on the stationary ring 5 are fixedly connected by the internal stationary ring fixing bolt 9, which can accurately install the stationary ring 5 on the end cover 2, ensuring the positional accuracy of the stationary ring 5. This is crucial for the sealing effect of the sealing assembly. The accurate position can ensure that the stationary ring 5 maintains a good fit with other components such as the rotating ring 4, improves the sealing performance, and enhances the stability and reliability of the entire connection structure.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A robotic rotary seal assembly, comprising a rotary shaft seal body (1); An installation cylinder (3) is provided at the middle position of the rotary shaft seal body (1), and end caps (2) are provided at the left and right sides of the installation cylinder (3). Its features are: A stationary ring (5) is provided on the inner side of the end cap (2), and two moving rings (4) are provided in the middle of the stationary rings (5) on both sides. A silicone ring (7) is provided on the inner side of the moving ring (4), and a clamping ring (6) is provided on the outer side of the silicone ring (7).

2. The robot rotary sealing assembly according to claim 1, characterized in that: An L-shaped sealing ring (20) is provided on the inner side of the stationary ring (5), a support ring (21) is provided on the rear side of the L-shaped sealing ring (20), a reinforcing rib (23) is provided on the inner side of the stationary ring (5) and the support ring (21), a positioning groove (22) is provided on the inner side of the stationary ring (5), and a positioning element (25) is provided on the outer side of the moving ring (4). The positioning element (25) is rotatably connected to the positioning groove (22).

3. A robot rotary sealing assembly according to claim 2, characterized in that: A buckle (31) is provided on the outer side of the clamping ring (6), and a placement groove (26) is provided on the inner side of the groove (24). The moving ring (4) and the silicone ring (7) are engaged with the buckle (31) through the placement groove (26).

4. A robot rotary sealing assembly according to claim 3, characterized in that: The mounting cylinder (3) has end grooves (11) on both sides, an inner groove (12) on the rear side of the end grooves (11), an outer plate (17) on the outer side of the end cover (2), and an insert plate (18) on the inner side of the outer plate (17). The end grooves (11) correspond to the outer plate (17), and the insert plate (18) corresponds to the inner groove (12).

5. A robot rotary sealing assembly according to claim 4, characterized in that: A retaining ring (13) is provided at the rear side of the inner groove (12). The retaining ring (13) corresponds to the stationary ring (5). The retaining ring (13) and the mounting cylinder (3) are an integrated structure.

6. A robot rotary sealing assembly according to claim 5, characterized in that: A groove (24) is provided on the inner side of the moving ring (4), and a clamping ring (8) is provided inside the groove (24).

7. A robot rotary sealing assembly according to claim 6, characterized in that: A male end (27) of the clamping ring (8) is provided on the left side, and a female end (28) of the clamping ring is provided on the right side. A buffer cavity (30) is provided inside the female end (28), and a plug-in ring (29) is provided inside the male end (27). The plug-in ring (29) is plugged into the buffer cavity (30), and the buffer cavity (30) is filled with compressed gas.

8. A robot rotary sealing assembly according to claim 7, characterized in that: The end slot (11) is provided with mounting cylinder bolt holes (14) inside, the end cover (2) is provided with stationary ring fixing bolt holes (16) inside, the end cover fixing bolt holes (15) are provided with end cover fixing bolt holes (16) outside, and the stationary ring (5) is provided with stationary ring mounting holes (19) outside. The end cover (2) is fixedly connected to the mounting cylinder (3) through the mounting cylinder bolt holes (14), the end cover fixing bolt holes (15) and the internal end cover fixing bolts (10). The stationary ring (5) is fixedly connected to the end cover (2) through the stationary ring fixing bolt holes (16), the stationary ring mounting holes (19) and the internal stationary ring fixing bolts (9).

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