A rotary joint device for a robot arm

Abstract

The utility model provides a kind of rotary joint device suitable for mechanical arm, it is related to mechanical arm technical field.The utility model discloses a base, rotary cylinder is fixedly installed in base top end, rotary cylinder top end is sleeved in installation groove, the inside symmetrical of installation groove is provided with clamping plate, clamping plate bottom end is fixedly installed with threaded block.By driving micro motor, drive shaft is rotated, in driving second bevel gear to rotate, by second bevel gear engagement drive first bevel gear to rotate, in drive screw to rotate, so that threaded block is moved in screw outer wall by thread, then push clamping plate and slide from installation groove inner wall, the rotary cylinder top is limited clamping, by clamping improve the firmness of installation, and when the rotation of rotary cylinder, mechanical arm main body can be driven to rotate, and drive installation can be installed to different sizes, improve the convenience, flexibility of installation, so that later disassembly is also more convenient.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and in particular to a rotary joint device suitable for robotic arms. Background Technology

[0002] A robotic arm is a complex system with multiple inputs and outputs, high nonlinearity, and strong coupling. It has high precision and operational flexibility and is usually composed of motion elements, guiding devices, joints, etc. It realizes movements such as extension, rotation, and lifting through a drive mechanism. It typically has 3-6 degrees of freedom (such as horizontal multi-joint type with Z1 / Z2 rotation and Z translation). It completes specific tasks through end effectors (such as grippers, welding guns, etc.).

[0003] However, there is a rotary joint device for robotic arms. The required extension length of the robotic arm varies depending on the application field and location. Therefore, in actual operation, it is necessary to adjust the length coverage area according to the needs, and also to consider the angle and installation to avoid affecting the actual operation of the robotic arm.

[0004] In view of the above problems, this utility model provides a rotary joint device suitable for robotic arms to solve the problem that the existing rotary joint device for robotic arms has different applications and positions, and the required extension length of the robotic arm varies. Therefore, in actual operation, it is necessary to adjust the length coverage area according to the needs, and also to consider the angle and installation to avoid affecting the actual operation of the robotic arm. Utility Model Content

[0005] This utility model provides a rotary joint device suitable for robotic arms. It includes a base, with a rotary cylinder fixedly mounted on its top end. The top end of the rotary cylinder is sleeved in a mounting groove. Symmetrical clamping plates are arranged inside the mounting groove. A threaded block is fixedly mounted on the bottom end of each clamping plate. The threaded block is threadedly connected to the outer wall of a screw. The screw is fixedly mounted on one side of a first bevel gear. A second bevel gear is meshed with one side of the first bevel gear. A rotating shaft is fixedly mounted on the top end of the second bevel gear. The rotating shaft is fixedly mounted on the bottom end of a micro motor. The micro motor is mounted on the bottom end of the robotic arm body.

[0006] The above scheme involves embedding the top of the rotary cylinder into the mounting slot, then driving a micro motor to rotate the shaft, which in turn drives the second bevel gear to rotate. The second bevel gear meshes with the first bevel gear, which in turn drives the screw to rotate, causing the threaded block to move along the outer wall of the screw. This pushes the clamping plate out of the inner wall of the mounting slot, limiting and clamping the top of the rotary cylinder. This clamping improves the stability of the installation. The rotation of the rotary cylinder can also drive the main body of the robotic arm to rotate.

[0007] In some embodiments, a slider is fixedly installed on the outer wall of the threaded block, and the slider is movably sleeved with a sliding groove, which is formed inside the mounting groove.

[0008] With the above scheme, the threaded block is driven to slide in the mounting groove, and the slider also slides in the groove. The slider and the groove provide a limiting and stabilizing effect for the sliding of the threaded block.

[0009] In some embodiments, clamping plates are provided on all four sides of the inner wall of the mounting groove, and the four clamping plates are arranged in a ring shape.

[0010] The above solution allows the clamping plate to grip the bottom of the rotary cylinder, and the ring shape design allows for better contact with the outer wall of the rotary cylinder, improving the gripping firmness and facilitating installation.

[0011] In some embodiments, a magnetic strip is fixedly provided on one side of the slider or the slide groove.

[0012] With the above scheme, the threaded block is driven to slide in the mounting groove, which also makes the slider slide in the groove. By using the repulsive principle between magnets, the stability of the slider sliding in the groove is improved and the misalignment that occurs during sliding is reduced.

[0013] In some embodiments, an electric push rod is fixedly installed on one side of the main body of the robotic arm, and a mechanical claw is fixedly installed on one side of the electric push rod. A plurality of rubber pads are provided on the inner wall of the mechanical claw.

[0014] With the above solution, when the main body of the robotic arm is operating, the electric actuator is activated. Through the telescopic nature of the electric actuator, the distance of the main body of the robotic arm can be adjusted. When the robotic gripper is gripping, the softness of the rubber pad improves the stability of the gripper's fit. The adjustment of the distance increases the adjustable range of the robotic gripper, thereby increasing the coverage area of ​​the robotic gripper. This avoids the need to replace the entire main body of the robotic arm and improves the overall practicality of the main body of the robotic arm.

[0015] The beneficial effects of this are:

[0016] 1. By driving a micro motor, the rotating shaft rotates, which in turn drives the second bevel gear to rotate. The second bevel gear meshes with the first bevel gear, which in turn drives the screw to rotate. This causes the threaded block to move along the outer wall of the screw, pushing the clamping plate out of the inner wall of the mounting slot and limiting the clamping of the top of the rotary cylinder. This clamping improves the stability of the installation. The rotation of the rotary cylinder drives the main body of the robotic arm to rotate. The drive installation can accommodate different sizes, improving the convenience and flexibility of installation and making subsequent disassembly more convenient.

[0017] 2. When the main body of the robotic arm is operating, the electric actuator is activated. Through the telescopic nature of the electric actuator, the distance of the main body of the robotic arm can be adjusted. When the robotic gripper is gripping, the softness of the rubber pad improves the stability of the gripper's fit. The adjustment of the distance increases the adjustable range of the robotic gripper, thereby increasing the coverage area of ​​the robotic gripper. This avoids the need to replace the entire main body of the robotic arm and improves the overall practicality of the robotic arm.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a rotary joint device suitable for a robotic arm in some embodiments of this application.

[0021] Figure 2 This is a schematic diagram of a partial structure of the robotic arm body in some embodiments of this application.

[0022] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the main body of the robotic arm in some embodiments of this application.

[0023] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the main body of the robotic arm in some embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base; 2. Rotary cylinder; 3. Mounting slot; 4. Clamping plate; 5. Threaded block; 6. Screw; 7. First bevel gear; 8. Second bevel gear; 9. Rotating shaft; 10. Micro motor; 11. Main body of robotic arm; 12. Slider; 13. Slide groove; 14. Magnetic strip; 15. Electric push rod; 16. Mechanical claw; 17. Rubber pad. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples. Unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple sets" means two or more (including two sets).

[0028] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. 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, they should not be construed as limitations on this application.

[0029] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, a detachable connection, or an integral connection. In addition to referring to a physical connection, "connection" or "linkage" in circuit structures can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] To facilitate understanding of the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0031] This invention provides a rotary joint device suitable for robotic arms. For example... Figures 1-4As shown, the system includes a base 1, a rotary cylinder 2 fixedly mounted on the top of the base 1, the top of the rotary cylinder 2 being sleeved in a mounting groove 3, a clamping plate 4 symmetrically arranged inside the mounting groove 3, a threaded block 5 fixedly mounted on the bottom of the clamping plate 4, the threaded block 5 being threadedly connected to the outer wall of a screw 6, the screw 6 being fixedly mounted on one side of a first bevel gear 7, a second bevel gear 8 being meshed on one side of the first bevel gear 7, a rotating shaft 9 fixedly mounted on the top of the second bevel gear 8, the rotating shaft 9 being fixedly mounted on the bottom of a micro motor 10, and the micro motor 10 being mounted on the bottom of the robotic arm body 11.

[0032] After the top of the rotary cylinder 2 is movably embedded into the mounting groove 3, the micro motor 10 is driven to rotate the shaft 9, which in turn drives the second bevel gear 8 to rotate. The second bevel gear 8 meshes with the first bevel gear 7, which in turn drives the screw 6 to rotate, causing the threaded block 5 to move threadedly on the outer wall of the screw 6. Then, the clamping plate 4 is pushed out of the inner wall of the mounting groove 3 to limit and clamp the top of the rotary cylinder 2. The clamping improves the stability of the installation. When the rotary cylinder 2 rotates, it can drive the main body 11 of the robotic arm to rotate.

[0033] In the technical solution of this utility model, a slider 12 is fixedly installed on the outer wall of the threaded block 5, and a sliding groove 13 is movably sleeved on the slider 12. The sliding groove 13 is opened inside the mounting groove 3.

[0034] The threaded block 5 is driven to slide in the mounting groove 3, which also causes the slider 12 to slide in the slide groove 13. The slider 12 and the slide groove 13 provide a limiting and stabilizing effect for the sliding of the threaded block 5.

[0035] In the technical solution of this utility model, clamping plates 4 are provided on all four sides of the inner wall of the mounting groove 3, and the four clamping plates 4 are arranged in a ring shape.

[0036] The clamping plate 4 is driven to clamp the bottom of the rotary cylinder 2, and the ring shape can better fit the outer wall of the rotary cylinder 2, improve the clamping firmness, and facilitate the installation.

[0037] In the technical solution of this utility model, a magnetic strip 14 is fixedly provided on one side of the slider 12 and the groove 13.

[0038] The threaded block 5 is driven to slide in the mounting groove 3, which also causes the slider 12 to slide in the slide groove 13. Through the repulsion principle between magnets, the stability of the slider 12 sliding in the slide groove 13 is improved, and the misalignment that occurs during sliding is reduced.

[0039] In the technical solution of this utility model, an electric push rod 15 is fixedly installed on one side of the main body 11 of the robotic arm, and a mechanical claw 16 is fixedly installed on one side of the electric push rod 15. Several rubber pads 17 are installed on the inner wall of the mechanical claw 16.

[0040] When the robotic arm body 11 is operating, the electric push rod 15 is activated. Through the telescopic nature of the electric push rod 15, the distance of the robotic arm body 11 can be adjusted. When the robotic gripper 16 is gripping, the softness of the rubber pad 17 improves the stability of the gripping action. The adjustment of the distance increases the adjustable range of the robotic gripper 16, thereby increasing the coverage area of ​​the robotic gripper 16. This avoids the need to replace the entire robotic arm body 11 and improves the overall practicality of the robotic arm body 11.

[0041] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rotary joint device suitable for robotic arms, characterized in that, The system includes a base (1), a rotary cylinder (2) is fixedly installed on the top of the base (1), the top of the rotary cylinder (2) is sleeved in the mounting groove (3), a clamping plate (4) is symmetrically arranged inside the mounting groove (3), a threaded block (5) is fixedly installed at the bottom of the clamping plate (4), the threaded block (5) is threadedly connected to the outer wall of the screw (6), the screw (6) is fixedly installed on one side of the first bevel gear (7), a second bevel gear (8) is meshed on one side of the first bevel gear (7), a rotating shaft (9) is fixedly installed on the top of the second bevel gear (8), the rotating shaft (9) is fixedly installed at the bottom of the micro motor (10), and the micro motor (10) is installed at the bottom of the robotic arm body (11).

2. The rotary joint device suitable for a robotic arm according to claim 1, characterized in that, The outer wall of the threaded block (5) is fixedly installed with a slider (12), and the slider (12) is movably sleeved with a groove (13), which is opened inside the mounting groove (3).

3. A rotary joint device suitable for a robotic arm according to claim 1, characterized in that, The mounting groove (3) has clamps (4) on all four sides of its inner wall, and the four clamps (4) are arranged in a ring shape.

4. A rotary joint device suitable for a robotic arm according to claim 2, characterized in that, A magnetic strip (14) is fixedly installed on one side of the slider (12) and the groove (13).

5. A rotary joint device suitable for a robotic arm according to claim 1, characterized in that, An electric push rod (15) is fixedly installed on one side of the main body (11) of the robotic arm, and a mechanical claw (16) is fixedly installed on one side of the electric push rod (15). Several rubber pads (17) are installed on the inner wall of the mechanical claw (16).

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