High-bearing main shaft structure of industrial robot

Abstract

The invention provides a high-bearing main shaft structure of an industrial robot, and relates to the technical field of industrial robots. The high-bearing-capacity main shaft structure of the industrial robot comprises a connecting sleeve, a sliding terminal is slidably connected to the inner wall of the connecting sleeve, a first rotating rod is fixedly connected to one end of the sliding terminal, and limiting rods are fixedly connected to the two ends of the outer wall of the sliding terminal correspondingly; the outer walls of the two limiting rods are slidably connected to limiting grooves formed in the two sides of the outer wall of the connecting sleeve, a threaded connecting opening is fixedly connected to one end of the connecting sleeve, the outer wall of the threaded connecting opening is sleeved with a sliding rod in a threaded mode, and a plurality of fixing grooves are formed in the outer wall of the sliding rod; the inner walls of the multiple fixing grooves are fixedly connected with fixing blocks. According to the invention, the bearing capacity is higher, the problem that deformation and vibration are easy to occur when a heavy workpiece is processed or high-load operation is carried out is solved, the angle is more convenient to adjust, and the heat dissipation is better.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial robots, and particularly to a high-load spindle structure for industrial robots. Background Art

[0002] Industrial robots are multi-joint manipulators or multi-degree-of-freedom machine devices widely used in the industrial field. They have a certain degree of automation and can rely on their own power sources and control capabilities to achieve various industrial processing and manufacturing functions. They can automatically execute tasks and rely on their own power and control capabilities to achieve various functions. In industrial production, industrial robots undertake various complex and high-intensity tasks. In the structural construction of industrial robots, there is a spindle structure to ensure the operation of industrial robots.

[0003] However, the traditional spindle structure of industrial robots has many problems. On the one hand, the load-bearing capacity is limited. When dealing with heavier workpieces or performing high-load operations, it is prone to deformation, vibration, etc., affecting the operation accuracy and stability of the robot, and even may cause equipment damage, increasing maintenance costs and production interruption time. On the other hand, the traditional spindle structure is not flexible enough in connection and transmission, and it is difficult to adapt to the adjustment requirements of the spindle position and angle in different operation scenarios. Moreover, the heat dissipation performance is not good. During long-term continuous operation, the spindle is prone to performance degradation due to overheating, shortening the service life. Therefore, those skilled in the art have provided a high-load spindle structure for industrial robots to solve the problems raised in the above background art. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a high-load spindle structure for industrial robots, which has the function of higher load-bearing capacity, solves the problems of easy deformation and vibration when dealing with heavier workpieces or performing high-load operations, and also has the functions of more convenient angle adjustment and better heat dissipation.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A high-load spindle structure for industrial robots includes a connecting sleeve. A sliding terminal is slidably connected to the inner wall of the connecting sleeve. One end of the sliding terminal is fixedly connected to a first rotating rod, and both ends of the outer wall of the sliding terminal are fixedly connected with limiting rods. The outer walls of both limiting rods are slidably connected to limiting grooves opened on both sides of the outer wall of the connecting sleeve;

[0008] One end of the connecting sleeve is fixedly connected with a threaded connection port. The outer wall of the threaded connection port is sleeved with a sliding rod in a threaded manner. A plurality of fixing grooves are formed on the outer wall of the sliding rod. Fixing blocks are fixedly connected to the inner walls of the plurality of fixing grooves. Fixing rings are fixedly connected to the ends of the plurality of fixing blocks away from the fixing grooves. A connecting column is fixedly connected between the two fixing rings.

[0009] Through the above technical solution, with the connecting sleeve as the basic component, the sliding terminal can axially slide within the connecting sleeve, providing the possibility for the position adjustment of subsequent components. The first rotating rod is used to connect an external driving device or working component to achieve power transmission and task execution. Through the cooperation of the limiting rod and the limiting groove, the sliding range of the sliding terminal is restricted, preventing it from detaching from the connecting sleeve and ensuring the stability of sliding at the same time. One end of the connecting sleeve is fixedly connected with a threaded connection port, which is used to connect the sliding rod to ensure a tight and reliable connection with the sliding rod. The fixing rings and the connecting column together constitute a stable support structure, enhancing the structural strength of the sliding rod and improving the bearing capacity of the main shaft.

[0010] Preferably, a rotating groove is formed on one side of the fixing ring on one side. Two second rotating rods are slidably connected to the inner wall of the rotating groove. Extension plates are fixedly connected to the ends of the two second rotating rods away from the rotating groove. Clamping blocks are fixedly connected to one ends of the two extension plates;

[0011] Through the above technical solution, by sliding the second rotating rods in the rotating groove, the position of the clamping blocks can be adjusted to achieve clamping and fixing of workpieces of different sizes. Two through rods penetrate between the two clamping blocks. Connecting joints are rotatably connected to the outer walls of the through rods. A connecting frame is fixedly connected to the ends of the two connecting joints away from the through rods. The connecting frame is used to connect other components, such as a sealing rubber ring and a limiting bearing.

[0012] Preferably, two through rods penetrate between the two clamping blocks. Connecting joints are rotatably connected to the outer walls of the through rods. A connecting frame is fixedly connected to the ends of the two connecting joints away from the through rods. A sealing rubber ring is fixedly connected to the inner wall of the connecting frame. A limiting bearing is fixedly connected to the inner wall of the sealing rubber ring;

[0013] Through the above technical solution, by fixedly connecting a limiting bearing to the inner wall of the sealing rubber ring, the limiting bearing can reduce the friction during rotation and ensure the smoothness of rotation. The fixing joint is used to connect components such as a buffer rod. The outer wall of the end of the fixing joint away from the limiting bearing is located between the two clamping blocks. Through the clamping action of the clamping blocks, a stable connection of the fixing joint is achieved. The buffer rod can extend and contract to a certain extent within the sliding rod, playing a role in buffering and shock absorption and reducing damage to the main shaft structure caused by external impact.

[0014] Preferably, a fixed section is fixedly connected to the inner wall of the limit bearing. The outer wall of the end of the fixed section away from the limit bearing is located between the two clamping blocks. A buffer rod is fixedly connected to the outer wall of the end of the fixed section away from the clamping blocks. One end of the buffer rod is fixedly connected to a sliding terminal, and the buffer rod is located inside the sliding rod;

[0015] Through the above technical solution, by providing the buffer rod, the vibration of the outer wall is weakened.

[0016] Preferably, buffer rubber rings are fixedly connected to the outer walls of the sliding rod and the buffer rod, and the plurality of buffer rubber rings correspond to each other;

[0017] Through the above technical solution, by providing the plurality of buffer rubber rings to correspond to each other, the vibration is buffered.

[0018] Preferably, a fixing plate is fixedly connected to one side of the connecting frame. A transmission section is fixedly connected to the end of the fixing plate away from the connecting frame. A heat dissipation sleeve is fixedly connected to the outer wall of the transmission section;

[0019] Through the above technical solution, by providing that a transmission section is fixedly connected to the end of the fixing plate away from the connecting frame, the transmission section transmits power to the main shaft structure to realize the execution of the operation. The heat dissipation sleeve is made of an aluminum alloy material with good heat conduction performance and can quickly conduct the heat generated during the operation of the main shaft.

[0020] Preferably, a heat dissipation coil is fixedly connected to the inner wall of the heat dissipation sleeve. An inner sleeve is fixedly connected to the inner wall of the heat dissipation coil. A sleeve rod is fixedly connected to one side of the inner sleeve;

[0021] Through the above technical solution, by providing that a heat dissipation coil is fixedly connected to the inner wall of the heat dissipation sleeve, coolant can be introduced into the heat dissipation coil. Through the circulating flow of the coolant, heat is carried away, further improving the heat dissipation efficiency. By providing the sleeve rod, the structural strength of the heat dissipation coil is enhanced, and it can also be used as an installation carrier for other components.

[0022] Preferably, a threaded connecting rod is fixedly connected to one side of the sleeve rod;

[0023] Through the above technical solution, by providing the threaded connecting rod, it can be used to connect other related components to realize the connection and collaborative work between the main shaft structure and external equipment.

[0024] Working principle: For the high-load spindle structure of this industrial robot, by installing the connecting sleeve at the corresponding position of the industrial robot, ensuring firm installation and accurate position, inserting the sliding terminal into the connecting sleeve, and making the limiting rod cooperate with the limiting groove to ensure that the sliding terminal can slide smoothly and will not break away from the connecting sleeve. Fix the first rotating rod to the sliding terminal to ensure firm connection and smooth power transmission. By installing the sliding rod and thread-connecting it to the threaded connection port, rotate the sliding rod to adjust its position so that the fixing ring and the connecting column are in appropriate positions. Install the fixing block in the fixing groove to ensure firm fixation. Install the second rotating rod in the rotating groove so that the extension plate and the clamping block can rotate flexibly. Pass the through rod through the two clamping blocks, install the connecting joint and the connecting frame, install the sealing rubber ring and the limiting bearing on the connecting frame, then fixedly connect the fixing joint to the limiting bearing, and then fixedly connect the buffer rod to the fixing joint and the sliding terminal. Install the buffer rubber rings on the outer walls of the sliding rod and the buffer rod to ensure correspondence. Install the fixing plate, the transmission joint and the heat dissipation sleeve on the connecting frame in sequence, then install the heat dissipation coil and the sleeve rod in the heat dissipation sleeve, and finally install the threaded connecting rod on the sleeve rod. By adjusting the position of the sliding terminal in the connecting sleeve and the position of the clamping block, the spindle can adapt to different working scenarios. When the industrial robot is operating, the transmission joint transmits power to the spindle structure, driving components such as the rotating rod to rotate to execute the operation. During the operation, the heat generated by the spindle is dissipated through the heat dissipation sleeve and the heat dissipation coil to ensure that the spindle always remains within the normal working temperature range. If an external impact is encountered, the buffer rod and the buffer rubber ring can play a buffering and shock-absorbing role to protect the spindle structure from damage.

[0025] (III) Beneficial effects

[0026] The present invention provides a high-load spindle structure for an industrial robot, with the following beneficial effects:

[0027] 1. The present invention provides a high-load spindle structure for an industrial robot. Through the high-strength design and reasonable layout of components such as the connecting sleeve, the sliding rod, the fixing ring, and the connecting column, the spindle can bear a large load. When processing heavy workpieces or performing high-load operations, it can still maintain stability, reduce deformation and vibration, and improve the operation accuracy.

[0028] 2. The present invention provides a high-load spindle structure for an industrial robot. Through the sliding connection between the sliding terminal and the connecting sleeve and the adjustable design of the clamping block, the spindle can flexibly adjust its position and angle according to different operation requirements, adapt to a variety of working scenarios, and improve the operation flexibility of the robot.

[0029] 3. The present invention provides a high-load spindle structure for an industrial robot. The design of the heat dissipation sleeve and the heat dissipation coil, combined with the circulation of the coolant, can quickly and effectively dissipate the heat generated during the operation of the spindle, avoid performance degradation caused by overheating, extend the service life of the spindle. Through the setting of the buffer rod and the buffer rubber ring, it can buffer and shock the external impact force, reduce the damage to the spindle structure, and improve the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2 is a multi-angle three-dimensional structural schematic diagram of the present invention;

[0032] Figure 3 is an internal structural schematic diagram of the present invention;

[0033] Figure 4 is a connection structure schematic diagram of the connecting frame of the present invention;

[0034] Figure 5 is a connection structure schematic diagram of the fixing ring of the present invention;

[0035] Figure 6 is a connection structure schematic diagram of the sliding rod of the present invention.

[0036] Among them, 1. connecting sleeve; 2. first rotating rod; 3. sliding terminal; 4. limiting rod; 5. limiting groove; 6. threaded connection port; 7. sliding rod; 8. fixing block; 9. connecting column; 10. fixing ring; 11. rotating groove; 12. second rotating rod; 13. extension plate; 14. clamping block; 15. fixing groove; 16. penetrating rod; 17. connecting joint; 18. connecting frame; 19. sealing rubber ring; 20. limiting bearing; 21. fixing joint; 22. buffer rod; 23. buffer rubber ring; 24. fixing plate; 25. transmission joint; 26. heat dissipation sleeve; 27. heat dissipation coil; 28. internal sleeve; 29. sleeve rod; 30. threaded connecting rod. DETAILED DESCRIPTION OF THE INVENTION

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to this application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

[0038] Embodiment 1:

[0039] As Figures 1-6 shown, the embodiment of the present invention provides a high-load spindle structure for an industrial robot, including a connecting sleeve 1. A sliding terminal 3 is slidably connected to the inner wall of the connecting sleeve 1. One end of the sliding terminal 3 is fixedly connected to a rotating rod 2. Both ends of the outer wall of the sliding terminal 3 are fixedly connected with limiting rods 4. The outer walls of the two limiting rods 4 are slidably connected to limiting grooves 5 opened on both sides of the outer wall of the connecting sleeve 1. One end of the connecting sleeve 1 is fixedly connected with a threaded connection port 6. A sliding rod 7 is threadedly sleeved on the outer wall of the threaded connection port 6. A plurality of fixing grooves 15 are opened on the outer wall of the sliding rod 7. Fixing blocks 8 are fixedly connected to the inner walls of the plurality of fixing grooves 15. One end of each of the plurality of fixing blocks 8 away from the fixing groove 15 is fixedly connected with a fixing ring 10. A connecting column 9 is fixedly connected between the two fixing rings 10. Based on the connecting sleeve 1 as a basic component, the sliding terminal 3 can axially slide within the connecting sleeve 1, providing the possibility for the position adjustment of subsequent components. The rotating rod 2 is used to connect an external driving device or working component to achieve power transmission and operation execution. Through the cooperation of the limiting rod 4 and the limiting groove 5, the sliding range of the sliding terminal 3 is restricted to prevent it from detaching from the connecting sleeve 1, and at the same time, the stability of the sliding is ensured. One end of the connecting sleeve 1 is fixedly connected with a threaded connection port 6, which is used to connect the sliding rod 7 to ensure a tight and reliable connection with the sliding rod 7. The fixing rings 10 and the connecting column 9 together form a stable support structure, enhancing the structural strength of the sliding rod 7 and improving the load-bearing capacity of the spindle.

[0040] Example 2:

[0041] As Figures 1-6As shown in the figure, an embodiment of the present invention provides a high-load spindle structure for an industrial robot. On one side of the fixed ring 10 on one side, a rotating groove 11 is opened. The inner wall of the rotating groove 11 is slidably connected with two second rotating rods 12. One end of the two second rotating rods 12 away from the rotating groove 11 is fixedly connected with an extension plate 13. One end of the two extension plates 13 is fixedly connected with a clamping block 14. By sliding the second rotating rod 12 in the rotating groove 11, the position of the clamping block 14 can be adjusted to realize the clamping and fixing of workpieces of different sizes.There are two through rods 16 passing through between the two clamping blocks 14. Connecting joints 17 are rotatably connected to the outer walls of the through rods 16. One ends of the two connecting joints 17 away from the through rods 16 are fixedly connected to a connecting frame 18. The connecting frame 18 is used to connect other components, such as a sealing rubber ring 19 and a limit bearing 20. There are two through rods 16 passing through between the two clamping blocks 14. Connecting joints 17 are rotatably connected to the outer walls of the through rods 16. One ends of the two connecting joints 17 away from the through rods 16 are fixedly connected to a connecting frame 18. A sealing rubber ring 19 is fixedly connected to the inner wall of the connecting frame 18. A limit bearing 20 is fixedly connected to the inner wall of the sealing rubber ring 19. By setting that a limit bearing 20 is fixedly connected to the inner wall of the sealing rubber ring 19, the limit bearing 20 can reduce the friction during rotation and ensure the smoothness of rotation. The fixed joint 21 is used to connect components such as the buffer rod 22. The outer wall of one end of the fixed joint 21 away from the limit bearing 20 is located between the two clamping blocks 14. Through the clamping action of the clamping blocks 14, the stable connection of the fixed joint 21 is realized. The buffer rod 22 can perform a certain degree of telescoping within the sliding rod 7, playing a role in buffering and shock absorption, and reducing the damage to the spindle structure caused by external impact. The fixed joint 21 is fixedly connected to the inner wall of the limit bearing 20. The outer wall of one end of the fixed joint 21 away from the limit bearing 20 is located between the two clamping blocks 14. A buffer rod 22 is fixedly connected to the outer wall of the fixed joint 21 away from the clamping block 14. One end of the buffer rod 22 is fixedly connected to a sliding terminal 3, and the buffer rod 22 is located within the sliding rod 7. By setting the buffer rod 22, the vibration of the outer wall is weakened. Buffer rubber rings 23 are fixedly connected to the outer walls of both the sliding rod 7 and the buffer rod 22. The multiple buffer rubber rings 23 correspond to each other. By setting that the multiple buffer rubber rings 23 correspond to each other, the vibration is buffered. One side of the connecting frame 18 is fixedly connected to a fixing plate 24. One end of the fixing plate 24 away from the connecting frame 18 is fixedly connected to a transmission joint 25. A heat dissipation sleeve 26 is fixedly connected to the outer wall of the transmission joint 25. By setting that one end of the fixing plate 24 away from the connecting frame 18 is fixedly connected to a transmission joint 25, the transmission joint 25 transmits power to the spindle structure to realize the execution of the operation. The heat dissipation sleeve 26 is made of aluminum alloy with good heat conduction performance, and can quickly conduct the heat generated during the operation of the spindle. A heat dissipation coil 27 is fixedly connected to the inner wall of the heat dissipation sleeve 26. An inner sleeve 28 is fixedly connected to the inner wall of the heat dissipation coil 27. A sleeve rod 29 is fixedly connected to one side of the inner sleeve 28. By setting that a heat dissipation coil 27 is fixedly connected to the inner wall of the heat dissipation sleeve 26, a coolant can be introduced into the heat dissipation coil 27. Through the circulating flow of the coolant, the heat is taken away, further improving the heat dissipation efficiency. By setting the sleeve rod 29, the structural strength of the heat dissipation coil 27 can be enhanced, and it can also be used as an installation carrier for other components. A threaded connecting rod 30 is fixedly connected to one side of the sleeve rod 29. By setting the threaded connecting rod 30, it can be used to connect other related components to realize the connection and coordinated work between the spindle structure and external equipment.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-load spindle structure for an industrial robot, comprising a connecting sleeve (1), characterized in that: A sliding terminal (3) is slidably connected to the inner wall of the connecting sleeve (1). One end of the sliding terminal (3) is fixedly connected to a first rotating rod (2). Both ends of the outer wall of the sliding terminal (3) are fixedly connected with limiting rods (4). The outer walls of the two limiting rods (4) are slidably connected to limiting grooves (5) formed on both sides of the outer wall of the connecting sleeve (1). One end of the connecting sleeve (1) is fixedly connected with a threaded connection port (6). A sliding rod (7) is threadedly sleeved on the outer wall of the threaded connection port (6). A plurality of fixing grooves (15) are formed on the outer wall of the sliding rod (7). Fixing blocks (8) are fixedly connected to the inner walls of the plurality of fixing grooves (15). One end of each of the plurality of fixing blocks (8) away from the fixing groove (15) is fixedly connected with a fixing ring (10). A connecting column (9) is fixedly connected between the two fixing rings (10).

2. The high-load spindle structure of an industrial robot according to claim 1, wherein: A rotating groove (11) is formed on one side of the fixing ring (10) on one side. Two second rotating rods (12) are slidably connected to the inner wall of the rotating groove (11). One end of the two second rotating rods (12) away from the rotating groove (11) is fixedly connected with an extension plate (13). One end of the two extension plates (13) is fixedly connected with a clamping block (14).

3. The high-load spindle structure of an industrial robot according to claim 2, characterized in that: Two through rods (16) penetrate between the two clamping blocks (14). Connecting joints (17) are rotatably connected to the outer walls of the through rods (16). One end of the two connecting joints (17) away from the through rods (16) is fixedly connected with a connecting frame (18). A sealing rubber ring (19) is fixedly connected to the inner wall of the connecting frame (18). A limiting bearing (20) is fixedly connected to the inner wall of the sealing rubber ring (19).

4. The high-load spindle structure of an industrial robot according to claim 3, characterized in that: A fixing joint (21) is fixedly connected to the inner wall of the limiting bearing (20). The outer wall of one end of the fixing joint (21) away from the limiting bearing (20) is located between the two clamping blocks (14). One end of the outer wall of the fixing joint (21) away from the clamping block (14) is fixedly connected with a buffer rod (22). One end of the buffer rod (22) is fixedly connected with the sliding terminal (3). And the buffer rod (22) is located inside the sliding rod (7).

5. The high-load spindle structure of an industrial robot according to claim 1, characterized in that: Buffer rubber rings (23) are fixedly connected to the outer walls of the sliding rod (7) and the buffer rod (22). The plurality of buffer rubber rings (23) correspond to each other.

6. The high-load spindle structure of an industrial robot according to claim 3, characterized in that: One side of the connecting frame (18) is fixedly connected with a fixing plate (24). One end of the fixing plate (24) away from the connecting frame (18) is fixedly connected with a transmission joint (25). A heat dissipation sleeve (26) is fixedly connected to the outer wall of the transmission joint (25).

7. The high-load spindle structure of an industrial robot according to claim 6, wherein: A heat dissipation coil (27) is fixedly connected to the inner wall of the heat dissipation sleeve (26). An inner sleeve (28) is fixedly connected to the inner wall of the heat dissipation coil (27). One side of the inner sleeve (28) is fixedly connected with a sleeve rod (29).

8. An industrial robot high-load spindle structure according to claim 7, characterized in that: One side of the sleeve rod (29) is fixedly connected with a threaded connecting rod (30).

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