Convenient replacement structure of robot mechanical arm

Abstract

The utility model relates to mechanical arm technical field discloses a kind of convenient replacement structure of robot mechanical arm, including connecting arm and mechanical claw subassembly, connecting arm is connected with connecting rod, connecting rod is fixedly connected with hollow mounting seat, mechanical claw subassembly is detachably connected on hollow mounting seat by connecting component, connecting component includes multiangular star block, limit block and plug-in rod, multiangular star block is fixedly connected on mechanical claw subassembly, plug-in hole is set up on multiangular star block, hollow mounting seat is set up with multiangular star shape through slot. In the utility model, by the predetermined position structure of multiangular star block and multiangular star shape through slot, annular handle is driven to push plug-in rod locking or unlocking, without any special tool, only need to guide alignment, rotation pre-fixing and rotation handle locking three steps can complete mechanical claw subassembly installation, reverse operation can quickly remove limit when disassembling, further improve operation convenience and security, reduce misoperation risk.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and in particular to a convenient replacement structure for a robotic arm. Background Technology

[0002] In the field of industrial automation, robotic arms, as core execution components, are widely used in assembly, handling, and sorting scenarios. To adapt to different operational needs, the end effector of the robotic arm needs to be frequently replaced, and its replacement efficiency and ease of operation directly affect the overall production line capacity. Currently, the connection structure between the robotic arm and the actuator needs to balance stability and detachability. Initial alignment is typically achieved through a positioning structure, followed by locking components to ensure no loosening or displacement during operation, meeting high-precision operation requirements.

[0003] According to the search, the existing convenient replacement structure of robotic arms includes a transition component for connecting the main body of the robotic arm and the actuator. It achieves initial positioning through a docking structure of a specific shape and is fixed by bolts, buckles or special locking parts. To a certain extent, it realizes the detachable replacement of the actuator and provides a basic solution for the multi-functional adaptation of robotic arms.

[0004] However, in actual use, the locking or unlocking process of the aforementioned replacement structure often requires specialized tools such as wrenches and screwdrivers, which increases the complexity of the operation process and results in a long replacement time, making it difficult to adapt to the rapid changeover requirements of the production line. Therefore, a convenient replacement structure for a robotic arm is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a convenient replacement structure for a robotic arm, aiming to solve the problems of complex operation and low efficiency in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a convenient replacement structure for a robotic arm, comprising:

[0007] A connecting arm, a connecting rod connected to the connecting arm, and a hollow mounting base fixedly connected to the connecting rod;

[0008] The mechanical gripper assembly is detachably connected to the hollow mounting base via a connecting component.

[0009] The connecting assembly includes a polygonal star block, a limiting block, and a plug-in rod. The polygonal star block is fixedly connected to the mechanical claw assembly. The polygonal star block has a plug hole. The hollow mounting base has a polygonal star-shaped through groove. The limiting block is fixedly connected in the hollow mounting base. The plug-in rod is set in the hollow mounting base and passes through the hollow mounting base. A pusher is installed on the outside of the plug-in rod to drive the plug-in rod to move.

[0010] As a further description of the above technical solution:

[0011] The pusher includes a connecting ring and an annular handle. The connecting ring is sleeved on the outside of the connecting rod and fixedly connected to the plug rod. The annular handle is rotatably connected to the outside of the connecting ring. The outside of the connecting rod has an external thread, and the annular handle is threaded to the connecting rod through the external thread.

[0012] As a further description of the above technical solution:

[0013] A limiting ring is fixedly connected to the connecting rod to limit the movement of the ring handle.

[0014] As a further description of the above technical solution:

[0015] A guide assembly is provided on the hollow mounting base. The guide assembly includes a limiting rod and a guide rod. The limiting rod is fixedly connected to the hollow mounting base, and the guide rod is fixedly connected to the hollow mounting base. The end of the guide rod near the mechanical claw assembly protrudes from the hollow mounting base. A guide hole is provided on the polygonal star-shaped block.

[0016] As a further description of the above technical solution:

[0017] The end of the limit rod away from the hollow mounting base is rounded.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the ring handle is provided with anti-slip grooves, which are evenly distributed along the circumference of the ring handle.

[0020] As a further description of the above technical solution:

[0021] The inner wall of the socket is provided with a smooth coating, which is a polytetrafluoroethylene coating.

[0022] This utility model has the following beneficial effects:

[0023] 1. The mechanical claw assembly can be installed by using a pre-positioning structure with a polygonal star block and a polygonal star through slot, and a threaded ring handle to push the plug rod to lock or unlock. No special tools are required. The mechanical claw assembly can be installed in just three steps: guide alignment, rotation pre-fixing, and rotation handle locking. When disassembling, the limit can be quickly released by reversing the operation, which further improves the convenience and safety of operation and reduces the risk of misoperation.

[0024] 2. In this utility model, the guide component ensures that the polygonal star block is accurately aligned and installed. In conjunction with the circumferential limit of the polygonal star structure, it avoids the mechanical claw from being misaligned during installation, thus ensuring the accuracy of subsequent operations. At the same time, the smooth polytetrafluoroethylene coating on the inner wall of the socket reduces friction and wear between the plug rod and the socket. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a convenient replacement structure for a robotic arm proposed in this utility model.

[0026] Figure 2 This is a schematic diagram showing the disassembled hollow mounting base of a convenient replacement structure for a robotic arm proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the polygonal star-shaped block of a convenient replacement structure for a robotic arm proposed in this utility model;

[0028] Figure 4 A schematic diagram of a hollow mounting base for a convenient replacement structure of a robotic arm proposed in this utility model;

[0029] Figure 5 This is a schematic cross-sectional view of the right side of the hollow mounting base, which is a convenient replacement structure for a robot arm proposed in this utility model.

[0030] Legend:

[0031] 1. Connecting arm; 2. Connecting rod; 3. Hollow mounting base; 4. Connecting assembly; 41. Polygonal star block; 42. Insertion hole; 43. Polygonal star through slot; 44. Limiting block; 45. Insertion rod; 5. Mechanical claw assembly; 6. Pushing component; 61. Connecting ring; 62. Ring handle; 63. External thread; 7. Limiting ring; 8. Guide assembly; 81. Limiting rod; 82. Guide rod; 83. Guide hole. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 3 and Figure 4 The present invention provides an embodiment of a convenient replacement structure for a robot arm, comprising a connecting arm 1 and a mechanical claw assembly 5. A connecting rod 2 is connected to the connecting arm 1, and the connecting rod 2 is hinged to the end of the connecting arm 1. The connecting rod 2 is driven to rotate by a motor, and a hollow mounting base 3 is fixedly connected to the connecting rod 2. The hollow mounting base 3 can move synchronously with the connecting rod 2. The mechanical claw assembly 5 is detachably connected to the hollow mounting base 3 through a connecting component 4.

[0034] The connecting component 4 includes a polygonal star block 41, a limiting block 44, and a connecting rod 45. The polygonal star block 41 is fixedly connected to the mechanical gripper assembly 5. The polygonal star block 41 has an insertion hole 42. The hollow mounting base 3 has a polygonal star-shaped through groove 43, which has the same cross-sectional dimension as the polygonal star block 41. This allows the polygonal star block 41 to be inserted into the hollow mounting base 3 through the through groove 43. When the polygonal star block 41 is inserted into the hollow mounting base 3, its outer wall fits against the inner wall of the hollow mounting base 3, thus achieving initial positioning of the polygonal star block 41. As the polygonal star block 41 rotates to a position offset from the through groove 43, it ensures that the polygonal star block 41 can... The multi-pointed star block 41 moves left and right to leave the hollow mounting base 3. The limiting block 44 is fixedly connected in the hollow mounting base 3. The insertion rod 45 is set in the hollow mounting base 3 and passes through the hollow mounting base 3. When the multi-pointed star block 41 rotates forward inside the hollow mounting base 3, the corner of the multi-pointed star block 41 can be made to fit with the limiting block 44 again. Then, the insertion hole 42 opened on the multi-pointed star block 41 can be aligned with the insertion rod 45. At this time, the insertion rod 45 moves to the right and can be inserted into the insertion hole 42, completing the installation limiting of the multi-pointed star block 41. This allows the multi-pointed star block 41 to be stably installed inside the hollow mounting base 3, thus enabling the quick and convenient installation of the mechanical claw assembly 5.

[0035] The inner wall of the socket 42 is provided with a smooth coating, which is a polytetrafluoroethylene coating, to reduce the frictional resistance and wear of the plug rod 45 when it is inserted into the socket 42. A pusher 6 is installed on the outside of the plug rod 45 to move the plug rod 45. The user can operate the pusher 6 to move the plug rod 45 laterally in the left and right directions, thereby quickly inserting the plug rod 45 into the socket 42.

[0036] When it is necessary to install the mechanical claw assembly 5, the polygonal star block 41 can be inserted into the hollow mounting base 3 through the polygonal star through slot 43. At this time, the corner of the polygonal star block 41 will fit with the limiting block 44. Then, rotate the mechanical claw assembly 5 forward to rotate the polygonal star block 41 to fit with the adjacent limiting block 44 on the other side. This allows the insertion rod 45 to be quickly aligned with the insertion hole 42. At the same time, the polygonal star block 41 will be offset from the polygonal star through slot 43 to prevent the polygonal star block 41 from leaving the hollow mounting base 3. Then, operate the pusher 6 to move the insertion rod 45 to the right, so that the insertion rod 45 can be quickly inserted into the insertion hole 42, completing the convenient installation of the mechanical claw assembly 5. The structure is simple and the operation is easy.

[0037] Reference Figures 2-4The pushing component 6 includes a connecting ring 61 and an annular handle 62. The connecting ring 61 is sleeved on the outside of the connecting rod 2 and fixedly connected to the insertion rod 45. When the connecting ring 61 moves, it can drive the insertion rod 45 to move synchronously. The annular handle 62 is rotatably connected to the outside of the connecting ring 61. The outside of the connecting rod 2 is provided with an external thread 63. The annular handle 62 is threadedly connected to the connecting rod 2 through the external thread 63. When the annular handle 62 rotates, it can move laterally in the left and right directions relative to the connecting rod 2. Therefore, when the operator rotates the annular handle 62, the connecting ring 61 and the insertion rod 45 can move laterally in the left and right directions under the action of the external thread 63, thereby driving the insertion rod 45 to be quickly inserted into the insertion hole 42.

[0038] A limiting ring 7 is fixedly connected to the connecting rod 2 to limit the movement of the ring handle 62. When the ring handle 62 moves to the left and fits against the limiting ring 7, it can drive the plug rod 45 to move to the left simultaneously until it is completely disengaged from the insertion hole 42. At the same time, the plug rod 45 does not disengage from the hollow mounting base 3, and its end is still located in the through hole on the hollow mounting base 3. This can guide and limit the subsequent rightward movement of the plug rod 45. The outer wall of the ring handle 62 is provided with anti-slip grooves, and the anti-slip grooves are evenly distributed along the circumference of the ring handle 62. This can increase the friction between the ring handle 62 and the operator's hand and reduce the risk of slippage during rotation.

[0039] Reference Figure 2 , Figure 4 and Figure 5 A guide assembly 8 is provided on the hollow mounting base 3. The guide assembly 8 includes a limiting rod 81 and a guide rod 82. The limiting rod 81 is fixedly connected to the hollow mounting base 3, and the guide rod 82 is fixedly connected to the hollow mounting base 3. The end of the guide rod 82 near the mechanical claw assembly 5 protrudes from the hollow mounting base 3. A guide hole 83 is provided on the polygonal star block 41. The end of the limiting rod 81 away from the hollow mounting base 3 is rounded. The rounded structure eliminates the sharp edge through the arc transition, so that the polygonal star block 41 can smoothly contact and move along the arc surface during the rotation and contact with the limiting rod 81, avoiding installation jamming caused by structural interference, ensuring a smoother assembly process for the mechanical claw assembly 5 and reducing the difficulty of operation.

[0040] During installation, the guide hole 83 can be aligned with the guide rod 82 and inserted to initially limit the polygonal star block 41. Then, the polygonal star block 41 is rotated so that the corner of the polygonal star block 41 fits with the limiting rod 81. The polygonal star block 41 will then be aligned with the polygonal star through groove 43, thereby improving the installation and alignment efficiency of the polygonal star block 41.

[0041] Working principle: The operator holds the mechanical claw assembly 5 and aligns the guide hole 83 on the polygonal star block 41 with the protruding guide rod 82 on the hollow mounting base 3. The operator slowly inserts the assembly, ensuring that the corners of the polygonal star block 41 fit against the limiting rod 81, so that the polygonal star block 41 and the polygonal star through groove 43 are quickly and precisely aligned. Then, the operator continues to push the mechanical claw assembly 5 until the polygonal star block 41 is fully inserted into the hollow mounting base 3. The operator then rotates the mechanical claw assembly 5 clockwise, causing the polygonal star block 41 to rotate synchronously until the corners of the polygonal star block 41 fit against the limiting block 44 inside the hollow mounting base 3 again. At this point, the shape of the polygonal star block 41 is completely misaligned with the polygonal star through groove 43 of the hollow mounting base, preventing it from detaching from the mounting base 3 by lateral movement. This achieves anti-detachment pre-fixation, while the insertion hole 42 and the insertion rod 45 are precisely aligned.

[0042] Finally, the operator holds the ring handle 62 and rotates it clockwise. Since the ring handle 62 is connected to the connecting rod 2 through the external thread 63, it will move to the right along the connecting rod 2 when rotated, thereby driving the connecting ring 61 and the plug rod 45 fixed thereto to move to the right in sync, until the plug rod 45 is fully inserted into the socket 42 of the polygonal star block 41. The smooth polytetrafluoroethylene coating on the inner wall of the socket 42 can reduce the frictional resistance and wear when the plug rod 45 moves. At this time, the mechanical claw assembly 5 is completely locked on the hollow mounting base 3, and the installation is completed.

[0043] When disassembly is required, rotating the ring handle 62 moves the plug rod 45 to the left, which can quickly release the limit on the polygonal star block 41. Then, the mechanical claw assembly 5 can be rotated backward so that the corner of the polygonal star block 41 is once again in contact with the limit block 44, which can move the polygonal star block 41 to a state aligned with the polygonal star through slot 43. Then, the polygonal star block 41 can be pulled out directly to quickly complete the disassembly of the mechanical claw assembly 5.

[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 convenient replacement structure for a robotic arm, characterized in that, include: Connecting arm (1), a connecting rod (2) is connected to the connecting arm (1), and a hollow mounting base (3) is fixedly connected to the connecting rod (2); Mechanical claw assembly (5), which is detachably connected to the hollow mounting base (3) via connecting assembly (4); The connecting component (4) includes a polygonal star block (41), a limiting block (44), and a plug rod (45). The polygonal star block (41) is fixedly connected to the mechanical claw component (5). The polygonal star block (41) has a plug hole (42). The hollow mounting base (3) has a polygonal star-shaped through groove (43). The limiting block (44) is fixedly connected in the hollow mounting base (3). The plug rod (45) is disposed in the hollow mounting base (3) and passes through the hollow mounting base (3). A pusher (6) for moving the plug rod (45) is installed on the outside of the plug rod (45).

2. The convenient replacement structure for a robotic arm according to claim 1, characterized in that: The pusher (6) includes a connecting ring (61) and an annular handle (62). The connecting ring (61) is sleeved on the outside of the connecting rod (2) and fixedly connected to the plug rod (45). The annular handle (62) is rotatably connected to the outside of the connecting ring (61). The connecting rod (2) has an external thread (63) on its outside. The annular handle (62) is threaded to the connecting rod (2) through the external thread (63).

3. The convenient replacement structure for a robotic arm according to claim 2, characterized in that: A limiting ring (7) for limiting the movement of the annular handle (62) is fixedly connected to the connecting rod (2).

4. The convenient replacement structure for a robotic arm according to claim 1, characterized in that: The hollow mounting base (3) is provided with a guide assembly (8), which includes a limiting rod (81) and a guide rod (82). The limiting rod (81) is fixedly connected to the hollow mounting base (3), and the guide rod (82) is fixedly connected in the hollow mounting base (3), with its end near the mechanical claw assembly (5) protruding out of the hollow mounting base (3). The polygonal star block (41) is provided with a guide hole (83).

5. The convenient replacement structure for a robotic arm according to claim 4, characterized in that: The end of the limiting rod (81) away from the hollow mounting base (3) is rounded.

6. The convenient replacement structure for a robotic arm according to claim 2, characterized in that: The outer wall of the ring handle (62) is provided with anti-slip grooves, and the anti-slip grooves are evenly distributed along the circumference of the ring handle (62).

7. The convenient replacement structure for a robotic arm according to claim 1, characterized in that: The inner wall of the socket (42) is provided with a smooth coating, which is a polytetrafluoroethylene coating.

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