An industrial robot aluminum alloy die-cast joint link

By coating the surface of the joint connectors of industrial robots with a composite coating and a wear-resistant coating, and combining the design of support springs and moving blocks, the stability and protection performance of the connectors are solved, achieving high corrosion resistance and wear resistance, extending service life and reducing maintenance costs.

CN224407634UActive Publication Date: 2026-06-26JIANGXI JINHAOXING TECH DEV CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGXI JINHAOXING TECH DEV CO LTD
Filing Date
2025-06-06
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing industrial robot joint connectors suffer from insufficient connection stability due to their structural design, making them prone to loosening. Furthermore, their surface protection is limited, making them susceptible to corrosion and wear, which affects their service life and maintenance costs.

Method used

The connector surface is coated with a composite coating, a corrosion-resistant coating, and a wear-resistant coating. The design of support springs and moving blocks provides elastic support and dual fixing methods, enhancing connection stability and protection performance.

Benefits of technology

It improves the corrosion resistance and wear resistance of the connectors, extends their service life, reduces maintenance costs, and enhances the stability and reliability of the connection, preventing loosening and wear.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an industrial robot aluminum alloy die casting joint connecting piece, including first connecting axle, the left -hand end fixed mounting of first connecting axle has the locating rack, the inside through -mounting of locating rack has the pin rod, the outside rotation of pin rod is installed with the rotating shaft, the left -hand end fixed mounting of rotating shaft has the second connecting axle, the inside of second connecting axle is provided with internal thread. The utility model discloses through setting up the composite coating, the corrosion -resistant coating and the wear -resistant coating at the outer surface of first connecting axle and second connecting axle, can effectively improve the corrosion -resistant performance and wear resistance of connecting piece, prolong the service life of connecting piece, reduce maintenance cost, and the ceramic particle in composite coating is evenly distributed in metal base, makes composite coating have good strength and hardness, and fixed frame, support spring and mobile clamping block can provide certain elastic support when connecting, strengthen the stability of connection, prevent the loosening of connecting piece in the working process.
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Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to an aluminum alloy die-cast joint connector for industrial robots. Background Technology

[0002] Industrial robots play a vital role in modern manufacturing. The performance of their joint connectors directly affects the robot's working accuracy, stability, and service life. Existing industrial robot joint connectors have shortcomings in structural design, and the stability of the joint connections needs to be improved. They are prone to loosening during long-term use, affecting the normal operation of the robot. In addition, the surface protection performance of the joint connectors is limited, and they are susceptible to corrosion and wear in complex working environments, which reduces the service life of the connectors and increases maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide an aluminum alloy die-cast joint connector for industrial robots, which has the advantages of high connection stability and good surface protection performance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an aluminum alloy die-cast joint connector for an industrial robot, comprising a first connecting shaft, a positioning frame fixedly mounted on the left end of the first connecting shaft, a pin throughly mounted inside the positioning frame, a rotating shaft rotatably mounted outside the pin, a second connecting shaft fixedly mounted on the left end of the rotating shaft, the second connecting shaft having an internal thread inside, a connecting hole at the end of the second connecting shaft, the outer surfaces of both the first and second connecting shafts being coated with a composite coating, the outer surface of the composite coating being coated with a corrosion-resistant coating, the outer surface of the corrosion-resistant coating being coated with a wear-resistant coating, a fixing frame fixedly mounted on the outer surface of the right end of the second connecting shaft, support springs symmetrically mounted on the right side of the inner cavity of the fixing frame, a movable locking block fixedly mounted on the left end of the support spring, the inner side of the movable locking block being in contact with the surface of the second connecting shaft.

[0005] As a preferred embodiment, the movable card block has positioning holes at equal intervals on its exterior, and the positioning holes are connected to the slots inside the second connecting shaft.

[0006] As a preferred embodiment, a locking knob is installed through the outside of the fixing frame, and the locking end of the locking knob is securely connected to the surface of the movable block.

[0007] As a preferred embodiment, a guide slider is fixedly installed at one end of the movable card block, and the outer side of the guide slider slides in contact with the inner wall of the fixed frame.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. This utility model effectively improves the corrosion resistance and wear resistance of the connectors by providing a composite coating, a corrosion-resistant coating, and a wear-resistant coating on the outer surfaces of the first and second connecting shafts, thereby extending the service life of the connectors and reducing maintenance costs. The ceramic particles in the composite coating are evenly distributed in the metal matrix, giving the composite coating good strength and hardness. The fixing frame, support spring, and moving block can provide a certain elastic support during connection, enhancing the stability of the connection and preventing the connectors from loosening during operation.

[0010] 2. During the operation of an industrial robot, the joint connectors are subject to various external forces, which can easily cause them to loosen. The support spring ensures that the moving block always maintains a certain pressure on the second connecting shaft. Furthermore, the positioning pin can pass through the positioning hole and communicate with the internal groove of the second connecting shaft, which can assist in reinforcing the internal connecting column of the second connecting shaft. This further enhances the stability of the internal connecting column of the second connecting shaft after installation, effectively preventing the second connecting shaft from separating, shaking, or loosening during operation, thereby improving the stability and reliability of the entire joint connector connection. Attached Figure Description

[0011] Figure 1 This is a first-view perspective structural perspective view of the present invention;

[0012] Figure 2 This is a second-view perspective structural perspective view of the present invention;

[0013] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0014] Figure 4 This is a schematic diagram of the external coating structure of this utility model.

[0015] In the diagram: 1. First connecting shaft; 2. Positioning bracket; 3. Pin; 4. Rotating shaft; 5. Second connecting shaft; 6. Internal thread; 7. Connecting hole; 8. Fixing bracket; 9. Support spring; 10. Moving block; 11. Positioning hole; 12. Composite coating; 13. Corrosion-resistant coating; 14. Wear-resistant coating; 15. Locking knob. Detailed Implementation

[0016] 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.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Example 1:

[0019] Please see Figure 1 As shown, this utility model provides an aluminum alloy die-cast joint connector for an industrial robot, including a first connecting shaft 1. A positioning frame 2 is fixedly installed at the left end of the first connecting shaft 1. A pin 3 is installed through the inside of the positioning frame 2. A rotating shaft 4 is rotatably installed on the outside of the pin 3. A second connecting shaft 5 is fixedly installed at the left end of the rotating shaft 4. An internal thread 6 is provided inside the second connecting shaft 5. A connecting hole 7 is opened at the end of the second connecting shaft 5. The outer surfaces of the first connecting shaft 1 and the second connecting shaft 5 are both coated with a composite coating 12. The outer surface of the composite coating 12 is coated with a corrosion-resistant coating 13. The outer surface of the corrosion-resistant coating 13 is coated with a wear-resistant coating 14. A fixing frame 8 is fixedly installed on the right side of the right side of the inner cavity of the fixing frame 8. A moving block 10 is fixedly installed at the left end of the supporting spring 9. The inner side of the moving block 10 is in contact with the surface of the second connecting shaft 5.

[0020] This technical solution effectively improves the corrosion resistance and wear resistance of the connectors by applying a composite coating 12, a corrosion-resistant coating 13, and a wear-resistant coating 14 to the outer surfaces of the first connecting shaft 1 and the second connecting shaft 5, thereby extending the service life of the connectors and reducing maintenance costs. The ceramic particles in the composite coating 12 are evenly distributed in the metal matrix, giving the composite coating 12 good strength and hardness. The fixing frame 8, the support spring 9, and the moving block 10 can provide a certain elastic support during connection, enhancing the stability of the connection and preventing the connectors from loosening during operation.

[0021] Example 2:

[0022] Based on Embodiment 1, this utility model is as follows: Figure 1 As shown, the movable block 10 has positioning holes 11 evenly spaced on its exterior, and the positioning holes 11 are connected to the slots inside the second connecting shaft 5; a locking knob 15 is installed through the exterior of the fixing frame 8, and the locking end of the locking knob 15 is fastened to the surface of the movable block 10.

[0023] Adopting such Figure 1The technical solution shown is that during the operation of an industrial robot, the joint connectors are subjected to various external forces and are prone to loosening. The support spring 9 ensures that the moving block 10 always maintains a certain pressure on the second connecting shaft 5. Moreover, the positioning pin can pass through the positioning hole 11 and communicate with the internal slot of the second connecting shaft 5, which can assist in the reinforcement of the internal connecting column of the second connecting shaft 5. This further enhances the stability of the internal connecting column of the second connecting shaft 5 after installation, effectively preventing the second connecting shaft 5 from separating, shaking or loosening during operation, thereby improving the stability and reliability of the entire joint connector connection.

[0024] After the positioning component is initially positioned by inserting it into the positioning hole 11, the moving block 10 can be further firmly fixed in the required position by tightening the locking knob 15. This double fixing method greatly enhances the reliability of the connection between the moving block 10 and the second connecting shaft 5, preventing the moving block 10 from loosening or shifting due to vibration, external force or other factors during the operation of the industrial robot, and ensuring the stable operation of the joint connector. Since the positioning holes 11 are opened at equal intervals, it provides convenience for adjusting the position of the moving block 10 according to actual working needs. In different working scenarios or conditions, the relative position of the moving block 10 and the second connecting shaft 5 can be adjusted by selecting different positioning holes 11 to adapt to different connection requirements.

[0025] Example 3:

[0026] This utility model is as follows Figures 1-4 As shown, a guide slider is fixedly installed at one end of the movable card block 10, and the outer side of the guide slider slides in contact with the inner wall of the fixed frame 8.

[0027] By adopting the above technical solution, the guide slider slides in contact with the inner wall of the fixed frame 8, which can provide precise guidance for the movement of the movable block 10. Under the push of the support spring 9 or other external forces, the movable block 10 can move linearly along the inner wall of the fixed frame 8 in a specific direction, avoiding deviation or shaking, and ensuring that the movable block 10 can accurately fit with the surface of the second connecting shaft 5, thereby improving the stability and reliability of the entire connection structure.

[0028] The working principle of this utility model is as follows: During installation, the first connecting shaft 1 and the second connecting shaft 5 are rotatably connected through the rotating shaft 4 and the pin 3, so that the joint connector can rotate flexibly. When it is necessary to connect with other components, the internal thread 6 inside the second connecting shaft 5 and the connecting hole 7 at the end can be used to firmly connect it with other components through bolts or other connectors. During the connection process, the support spring 9 in the inner cavity of the fixing frame 8 will push the moving block 10 to fit tightly against the surface of the second connecting shaft 5, providing a certain elastic pressure. According to the actual connection requirements, the locking knob 15 is adjusted to make its locking end firmly connected to the surface of the moving block 10. At the same time, the positioning hole 11 on the moving block 10 is connected to the hole groove inside the second connecting shaft 5. The reliability of the connection can be further improved by inserting positioning pins or other means. Due to the composite coating 12, corrosion-resistant coating 13 and wear-resistant coating 14 coated on the outer surfaces of the first connecting shaft 1 and the second connecting shaft 5, corrosion and wear can be effectively resisted in complex working environments, protecting the main structure of the connector and extending its service life.

[0029] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0030] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An aluminum alloy die-cast joint connector for an industrial robot, comprising a first connecting shaft (1), characterized in that: A positioning frame (2) is fixedly installed on the left end of the first connecting shaft (1). A pin (3) is installed through the inside of the positioning frame (2). A rotating shaft (4) is rotatably installed on the outside of the pin (3). A second connecting shaft (5) is fixedly installed on the left end of the rotating shaft (4). An internal thread (6) is provided inside the second connecting shaft (5). A connecting hole (7) is opened at the end of the second connecting shaft (5). The outer surfaces of the first connecting shaft (1) and the second connecting shaft (5) are coated with a composite coating (12). A corrosion-resistant coating (13) is coated on the outside of the composite coating (12). A wear-resistant coating (14) is coated on the outside of the corrosion-resistant coating (13). A fixing frame (8) is fixedly installed on the outside of the right end of the second connecting shaft (5). A support spring (9) is symmetrically installed on the right side of the inner cavity of the fixing frame (8). A moving block (10) is fixedly installed on the left end of the support spring (9). The inner side of the moving block (10) is in contact with the surface of the second connecting shaft (5).

2. The die-cast aluminum alloy joint connector for an industrial robot according to claim 1, characterized in that: The movable card block (10) has positioning holes (11) at equal intervals on its exterior, and the positioning holes (11) are connected to the slots inside the second connecting shaft (5).

3. The die-cast aluminum alloy joint connector for an industrial robot according to claim 1, characterized in that: A locking knob (15) is installed through the outside of the fixing frame (8), and the locking end of the locking knob (15) is fastened to the surface of the moving block (10).

4. The die-cast aluminum alloy joint connector for an industrial robot according to claim 1, characterized in that: One end of the movable card block (10) is fixedly installed with a guide slider, and the outer side of the guide slider slides in contact with the inner wall of the fixed frame (8).